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based on the direct formation of molecularly imprinted polymer on gold electrode , the present invention provides a peptide sensor for the detection of low - molecular - weight peptides . a new cross - linking monomer , 2 is employed to attach the surface of the chip and to copolymerize with other monomers . interestingly , n - benzylacrylamide participating both polymerization and recognition is carried out in an aqueous environment . using quartz crystal microbalance detection , short peptides can be monitored by their interaction with plastic antibodies specific for the target peptides . the selectivity of molecularly imprinted polymer and the sensitivity of such artificial biosensors have collaborated to differentiate traces of oxytocin and vasopressin to the ng / ml scale .

the invention relates to a device and a method for welding two polymer parts via fusion using a heater mat knitted from a resistive wire coated with an insulating varnish , the heater mat being given a final shape . the heater mat is resistive wire having a diameter ranging from 0 . 2 mm to 0 . 3 mm , and has approximately parallelepiped meshes , the dimensions of which range from 1 . 5 × 3 mm 2 to 2 . 5 × 4 . 5 mm 2 .

the present invention provides a sustained release latanoprost implant in the form of a thin film comprising latanoprost incorporated in a biodegradable polymer matrix . preferably , said implant is an intraocular implant comprising a thin film comprising latanoprost incorporated in a biodegradable polymer matrix wherein said implant is configured as a disc or a rolled film that can be inserted into the eye and unrolls to provide a film having a high surface area to volume ratio .

ptfe is bonded directly to ptfe , and ptfe and related fluoropolymers are surface configured or molded , employing the differential expansion of the fluoropolymer to a confinement vessel or mold , and heating the same to fusion temperature and then cooling , creating a uniformly applied pressure on the polymer , followed by cooling while maintaining the pressure , at least during the initial cooling stages .

a rig skidding method involving raising a rig on jacks , positioning skid tracks comprising low friction plastic underneath the rig , lowering the rig , and skidding the rig along the skid tracks to a new site for rig operations . at the new site , the process is reversed to leave the rig on the ground at the new location .

in the repair of damaged shatterproof glass by the introduction of a polymerizable liquid into a conical crack a vacuum is intermittently released and reapplied to the damaged area by means of a vacuum chamber connected to a vacuum pump through a line having an opening to the atmosphere which opening is adapted to be rapidly opened and closed by an operator &# 39 ; s finger . the opening is threaded to receive a removable needle valve for accurate vacuum control . the vacuum chamber has a transparent end wall for viewing the work and a translucent cylindrical side wall allowing external light to illuminate the work without glare . a flexible seal in the end wall of the vacuum chamber allows a probe to be operated while the vacuum is applied . a plunger - sleeve combination , extending through the end wall is used to apply pressure to the liquid without releasing the vacuum .

the invention provides a lenticular lens type three - dimensional image display device and a method of fabricating the device without a need for a clear plastic substrate transposed between the image and lenticular lenses . the device can be obtained by directly printing curable coatings onto the image , making them particularly well suited for volume production . the combination the image printing and application of curable coatings process can be joined together to conduct the single pass - process . the single pass - process allows for flexibility of the printing only selective areas of the substrate . moreover , this process allows the device to be recyclable .

uniform hardenability is achieved in plastic injection mold and die block tooling of 20 inches and larger by the use of 0 . 05 - 0 . 20 vanadium in conjunction with low carbon steel in which ingots are hot worked to form mold and die blocks having cross sections of 20 inches and larger followed by water quenching and tempering .

a snowmobile frame is described , with a tunnel having an inverted u - shape . an engine cradle is attached to a forward portion of the tunnel . a suspension assembly is disposed forwardly of the engine cradle . at least one support member supports the suspension assembly on the engine cradle . the at least one support member forms a crumple zone between the suspension assembly and the engine cradle . the at least one support member resists plastic deformation in response to the first predetermined force exerted on the suspension assembly . the at least one support member undergoes plastic deformation in response to a second predetermined force being exerted on the suspension assembly . the second predetermined force is greater in magnitude than the first predetermined force . the tunnel resists plastic deformation in response to the second predetermined force .

a fuel cell having a polymer electrolyte membrane containing fluorine atoms distributed along the polymer chains , and metal conductors and / or catalysts , is protected from fluoride ion degradation of the metal components by a fluoride ion sequestering agent fixed in the cell or flowing through the cell . in a preferred embodiment , the fluoride ion scavenger comprises a suitable number of azacrown moieties attached to polymer constituents in the electrolyte membrane or in electrodes .

a method and apparatus are provided for performing light - directed reactions in spatially addressable channels within a plurality of channels . one aspect of the invention employs photoactivatable reagents in solutions disposed into spatially addressable flow streams to control the parallel synthesis of molecules immobilized within the channels . the reagents may be photoactivated within a subset of channels at the site of immobilized substrate molecules or at a light - addressable site upstream from the substrate molecules . the method and apparatus of the invention find particularly utility in the synthesis of biopolymer arrays , e . g ., oligonucleotides , peptides and carbohydrates , and in the combinatorial synthesis of small molecule arrays for drug discovery .

methods and apparatus for manufacturing strengthened ceramic honeycomb articles having thickened peripheral web segments by extruding , drying and firing honeycomb shapes formed by the extrusion of plasticized ceramic powder batches through honeycomb extrusion dies having peripheral slots incorporating outer widened slot portions of controlled depths , the controlled depths being selected to increase ceramic powder batch flow through the peripheral slots to a degree sufficient to form the thickened web segments but insufficient to cause geometric distortion of the thickened web segments .

localized delivery of 1 , 25 d 3 directly to a target area using biodegradable polymeric matrices maximizes the efficacy of this drug while minimizing systemic exposure and toxicity . anticalcemic analogs of 1 , 25 d 3 have also been incorporated into controlled release polymer formulations to achieve efficacious intracranial concentrations of 1 , 25 d 3 analogs for the treatment of intracranial tumors as well as neurodegenerative disorders such as alzheimer &# 39 ; s disease as well as to maximize the efficacy of these analogs in the treatment of systemic malignancies . the therapeutic efficacy of these formulations was demonstrated through a variety of studies in vitro and in vivo . hybrid analogs of 1 , 25 d 3 were incorporated into biodegradable polymer wafers composed of a polyanhydride copolymer of 1 , 3 - bispropane and sebacic acid in a 20 : 80 molar ratio . in addition to providing improved treatments for malignancies and neurodegenerative disorders , the spatial localization and high reproducibility of this controlled delivery methodology presents a unique opportunity to study in vivo the poorly understood mechanisms of 1 , 25 d 3 &# 39 ; s antiangiogenic , antiproliferative , and transcriptional regulating activities .

a membrane for corneal implant or keratoprosthesis comprising a biological polymer and a polyacrylamide is described . the mixture of both polymers produces a hydrogel that becomes a transparent film or membrane upon drying . the resulting device and tissue engineered implants are useful for biomedical applications of the cornea , such as tissue repair and transplantation .

there are disclosed novel photodegradable polymeric or plastic compositions comprising at least one organic polymer or copolymer and at least two different aromatic carbonyl photosensitizers .

the present invention describes an aliphatic polyoxaamide polymer and blends thereof that may be used to produce surgical devices such as sutures , sutures with attached needles , molded devices , and the like . the aliphatic polyoxaamide of the present invention have a first divalent repeating unit of formula i : -- c -- o ---- o -- c -- c -- ] i and a second repeating unit selected from the group of formulas consisting of : . sub . t , i --]. sub . b , and ii ]. sub . p -- o --). sub . l g xi and combinations thereof , wherein x and y are selected from the group consisting of -- o -- and -- n --, provided both x and y are not both -- o -- and may be blended with a second polymer that is preferably biocompatable .

new ampholyte biomaterial compounds containing ampholyte moieties are synthesized and integrated into polymeric assemblies to provide hydrophilic polymers exhibiting improved biocompatibility , haemocompatibility , hydrophilicity non - thrombogenicity , anti - bacterial ability , and mechanical strength , as well as suitability as a drug delivery platform .

a unitary , flexible , substantially noncollapsible catheter tube of biocompatible material is comprised of hard and soft regions . the hard regions can be ring shaped or helical . the hard regions provide sufficient rigidity to the tube to prevent collapse under normal usage as the interior and exterior pressures vary . the soft regions provide sufficient flexibility to allow contoured placement of the tube . the hard regions can be created by exposing a polymer in the tube to radiation . the hard regions can also be created by periodically adding a harder material to the tube .

an airbag bracket includes a self - fastening protrusion extending from a plate - like metallic base . the base includes a tongue onto which the protrusion is molded using a polymeric material . the base has at least one through - aperture onto which a fabric tail of an airbag unit may be wound . the base further includes a fastener aperture to receive there - through a fastener . the protrusion and fastener are mounted in respective holes or sockets in a body wall of a vehicle in order to mount the airbag system .

the invention is directed to a method of making carboxylated cellulose fibers whose fiber strength and degree of polymerization is not significantly sacrificed . the method involves the use of tempo as a primary oxidant and a hypohalite salt as a secondary oxidant in an aqueous environment . preferably the oxidized cellulose is then stabilized against d . p . loss in alkaline environments and color reversion with a reducing agent such as sodium borohydride . alternatively it may be treated with an oxidant such as sodium chlorite . the method results in a high percentage of carboxyl groups located at the fiber surface . the product is especially useful as a papermaking fiber where it contributes strength and has a higher attraction for cationic additives . the product is also useful as an additive to recycled fiber to increase strength . the method can be used to improve properties of either virgin or recycled fiber . it does not require high α - cellulose fiber but is suitable for regular market pulps .

a flexible lid with opposable tabs constructed from a pliable plastic or rubber compound . the lid incorporates a wall that extends for the entire circumference of the lid that consists of an angular cut back area which creates securing means for a container of similar diameter . opposable tabs are incorporate to ease in the removal of the lid from a container for reuse . tabs may also be used to assist in securing and gripping the lid .

a method is described for a simple , fast and efficient synthesis of homopolymers and copolymers by the enzymatic ring opening polymerization of lactones and lactides . the enzyme used is an ion paired protease . the advantage of this enzymatic system is in using small amount of enzyme per monomer and lower reaction time . homopolymers and copolymers are synthesized with molecular weights between 1000 and 4600 daltons , and dispersity as low as 1 . 1 . the monomer conversion after 4 days , for reactions catalyzed by protease s , has reached 100 %. different initiators are used to control the rate and degree of polymerization . synthesis of block copolymers with defined block size and crystallinity are described in this invention . these biodegradable and bioerodable polyesters and copolyesters with controlled molecular weight , dispersity and crystallinity have applications in medical , drug , cosmetic and food industries .

a biosensor which electrochemically detects a material which relates to a reaction of a specific compound in a liquid sample with a biologically active substance or its related substance , in which the biologically active material or an optionally used mediator is placed at a part which is remote from a position of an electrode which acts as electrochemical detector means , and optionally the biological active material or the mediator is covered with a polymer layer .

this disclosure relates to a method and a system of producing nanoparticles and nanoparticle matrices of thermolabile , biocompatible matrix materials , like lipids and biopolymers with controlled properties . a prototype pulse - heat aerosol system is described for single - step production of free , thermolabile nanoparticles with sufficient control over size , morphology and crystallinity with controlled - release properties , for possible therapeutic , cosmetic or diagnostic use . nanoparticles of the range 50 to 500 nm are obtained and are found suitable for controlled drugs delivery .

an improve heat - sealable cook - in package for meat products capable of providing excellent adherence with minimal purge loss comprised of interfacing sealable wall portions the interfacing layers of which consist of a high strength , high shrink , low melt index ethylene acid copolymer for adhering contact with the product and itself .

a single - use dispensing device for dispensing liquid , pasty and other flowable and fluid substances includes a fillable and sealable plastic container for receiving a substance . the container has a neck end , a filling end opposite to the neck end , and lateral sealing seams defining a lateral contour of the container . an opening provided in the neck end extends through the neck end for dispensing the substance . a plug - like closure means for closing the opening extends throughout the neck end toward an outer portion of the neck end . a first transversal sealing seam extends transversely through the lateral sealing seams of the container at the outer portion of the neck end sealing the closure means from all sides . a tearable perforation seam provided in a portion of the neck end extends transversely through the lateral sealing seams . the perforation seam being displaced relative to the first transversal sealing seam towards the filling end of the container .

disclosed are oligonucleotides useful in methods for determining whether a sample contains borrelia afzelii , a spirochete which is a causative agent of lyme disease in humans . these oligonucleotides , which have nucleotide sequences derived from a coding segment of the gene encoding the p24 gene for the outer surface protein of borrelia afzelii , are useful as forward and reverse primers for a polymerase chain reaction using nucleic acids from a biological sample as templates , and as probes for detecting any resultant amplicon . detection of an amplicon indicates the sample contains borrelia afzelii . real - time pcr and detection using florescence resonance energy transfer is disclosed .

the surface free energy of a polymer blend where a base polymer contains an additive having a different surface free energy than that of the base polymer can be controlled over a wide range of additive surface concentrations by appropriate choice of the mold surface free energy during fabrication . a high surface concentration of additive relative to a low bulk concentration can be achieved , leading to improved biocompatibility without loss of optical clarity .

the instant invention involves the use of a combination of preparatory steps in conjunction with mass spectroscopy and time - of - flight detection procedures to maximize the diversity of biopolymers which are verifiable within a particular sample . the cohort of biopolymers verified within such a sample is then viewed with reference to their ability to evidence at least one particular disease state ; thereby enabling a diagnostician to gain the ability to characterize either the presence or absence of said at least one disease state relative to recognition of the presence and / or the absence of said biopolymer .

the invention relates to a filter cartridge for a filter for filtering liquid or gaseous media comprising two front disks and a substantially hollow cylindrical filter member arranged inbetween the two front disks , with the medium to be filtered flowing through the filter member , with at least one of the front disks provided with a central aperture whereby the filter cartridge is axially mountable onto a medium inlet pipe or outlet pipe with at least one seal sealingly positioned inbetween , and wherein the filter cartridge is detachable from the pipe for replacement . the filter cartridge is designed as a replacement filter cartridge for replacing common filter cartridges having metal parts , wherein the filter consists of paper and / or cotton and / or felt and / or thermally usable plastic non - woven fabric , wherein the front disks and formed of thermally consumable plastic and the seal is formed of a flexible thermally consumable material .

the invention relates to manufacturing thermoplastic material containers with a petaloid bottom by drawing - blowing hot preforms in a blowing mold that has a petaloid mold bottom including radiating ridges alternating with cavities that are adapted to form the valleys and the feet , respectively , of the container bottom ; during drawing , heat losses are reduced in longitudinal zones of the end part of the preforms , extending over the bottom and over an axial portion of their body , distributed over the periphery of the ends of the preforms facing respective cavities of the mold bottom .

the invention relates to saucer - type handle components that pertain to a hollow handle and are produced in several steps . said handle is used for a toothbrush . said components are joined together and are inserted into an injection mould . a synthetic material , preferably a thermoplastic elastomer , is injection - moulded around the mould - parting line between the handle components in said injection mould . the connection seam thus produced holds the two handle components together in a nondetachable manner and seals the hollow space which is formed by the handle components .

hydroxyapatite - polymer nanocomposites , which are nanoparticles / microparticles , methods for making them , and articles made from them are disclosed . these methods are capable of preparing nanocomposites exhibiting more homogeneous dispersion of nanoparticles than is seen using previous methods . such nanocomposites and articles are useful for a wide variety of applications , such as biological , medical , biochemical , biosensor , fuel cell , and aerospace applications .

chromophores having two - photon or other multi - photon absorptivity . the chromophores are based on a structure of four stilbenoid groups attached to a paracyclophane core , where each stilbenoid group comprises a nitrogen - containing organic group attached by its nitrogen atom to a stilbenoid arm . in particular embodiments , at least one of the stilbenoid groups includes a sulfonium , ammonium , selenium , iodonium or phosphonium moiety . the chromophores have utility as photo - polymerization initiators and two - photon fluorophores for biological imaging .

provided is an apparatus for detecting biopolymers capable of total analysis including non - reacted samples without complicated operations such as washing . a dna probe is fixed to one of electrodes and direct current voltage is placed between the electrodes , so that it becomes possible to separate complementary strand sample dna and non - complementary strand sample dna . by analyzing from a ratio in the whole reaction system , it is possible to obtain clearer results . further , by using electrophoresis by gel together , it is possible to separate reacted samples and non - reacted samples to perform measurements therefor in the same reaction field .

an endless track assembly that mounts to a wheeled vehicle . the assembly provides 1 ) a track suspension having fixed or adjustable , independently biased sets of idler wheels to vary the track contour without affecting track tension , 2 ) an eccentric bearing housing at a drive sprocket controls track tension , 3 ) a contoured peripheral edge at the drive sprocket prevents ice and mud buildup , 4 ) rubber - coated , plastic idler wheels facilitate track movement , 5 ) a multi - vehicle compatible adapter mounting plate accommodates a variety of vehicles , 6 ) a rotation limited torsion coupler and / or rotation limiting coupler arms prevent track contact with the vehicle , 7 ) a locking steering arm coupler prevents loss of steering control , and 8 ) shaped track lugs and channels clear and direct debris away from the track suspension and drive assembly . the improved suspension particularly supports sets of idler wheels in pivotal relation to the track support frame and resiliently biases a pre - tensioned rocker arm that links adjacent suspension arms mounted to the adjoining idler wheels . suspension arm movement induces expansion and contraction of tension springs coupled to the rocker arms to augments shape changes at the track contact surface to optimize traction and steering control .

for preparing plastic waste composed of different plastics , possibly combined with other materials , for further processing , for example , as additives for construction . a method of the invention comminutes the waste , metals are separated out , the plastic waste is agglomerated , and the agglomerated waste is comminuted further . a device according to the invention for performing the method uses comminution devices , metal separators , and at least one agglomerator . the entire device is completely mobile and equipped with its own power supply .

a high kinetic energy water spraying apparatus wets powdered or granular dry material , particularly hard - to - wet polymers , to provide a lump - free solution of a controlled concentration . a volumetric feeder drops the dry material through a fructoconical upper portion of the apparatus . water is injected tangentially so that the inner surface of the upper portion is completely wetted to prevent buildup of dry material on the surface . a lower portion of the apparatus comprises a cylindrical column which receives dry material from the upper portion . the inner surface of the column includes a series of spray nozzles positioned to produce downwardly sloped and radially inwardly oriented jets of liquid which impinge falling dry material with high energy . the downward slope of the jets creates a downward air flow so that any dust from the dry material is drawn downwardly into the column .

a vehicle sun - shade of the louvre type formed from plastic wherein sagging due to high temperature imparted to the plastic is reduced by the use of a spacer rod passing through bushes in which it is frictionally engaged , the bushes being in the louvres and between their ends .

a plastic display case which may be assembled from essentially flat components is provided with a castellated tongue and groove construction . this particular construction allows extremely high stacking strength to be provided from a relatively thin gauge material .

the following specification discloses a buoyancy compensator bladder and method of manufacture therefor . the bladder has a plurality of gussets implaced therein in order to rigidify and maintain a pre - established general configuration to the bladder . a plurality of insets or pleats are implaced around the shoulder area to provide for a generally arcuate curvilinear conformation therearound . a nylon plastic coated material is used for the gussets having one side that can be bonded to the inner side of the bladder , while the other side is formed from a nylon having a higher melting temperature . the gussets that are made from the nylon coated material are folded and implaced within the bladder or cavity formed from a plurality of sheets , the combination of which is brought together and heatset by means of an rf heater , or other suitable heater . the gusset material is formed from a nylon fabric having a polyurethane coating thereon formed from a liquidous first coating with two sheets adhered thereto to form a thickened polyurethane coating over one surface thereof without completely penetrating through the interstices to the other side to the extent where it would melt and bind during the forming operation .

the compounds of the present invention are linear and branched dextrans having a plurality of their glucose units modified at the 3 - position ring carbon with groups selected from the class consisting of keto , amino , halo , benzyl , alkyl , sulfonyl , carboxyl and hydrogen . the modified dextrans reduce and / or modify activity of glucosyltransferase enzymes which are produced by oral strains of streptococcus mutans bacteria . gtf enzymes mediate oral biosynthesis of plaque - forming glucose polymers from ingested sucrose . therefore , the dextrans of the present invention , which reduce and / or modify activity of gtf enzymes , are useful in reducing the formation of dental plaque . the present invention is further directed to a dental health method comprising the step of contacting the oral cavity with linear or branched dextran compounds having a plurality of their glucose units modified at the 3 - position carbon with a group such as keto , amino , halo , benzyl , alkyl , sulfonyl , carboxyl or hydrogen .

the invention relates to a library of 298 peptides useful for formulating a novel therapeutic hiv vaccine . the peptide sequences were selected on the basis of calibration of molecular structure properties of hiv - 1 or host cell proteins . a mixture of d - and l - amino acids or all d - amino acids are used to synthesize the stereoisomer peptides for the purpose of increasing their stability . the peptides are expected to have the ability to potently inhibit functioning of proteins important for hiv infection . a plural of the peptides are conjugated together with a biocompatible polymer , preferably hpma to further increase stability and solubility , decrease drug toxicity , and potentially evade multidrug resistance and exert cooperative effect , since some peptides are the ligands for host proteins such as integrin , trombospondin , vegfr and ledgf which can bring the therapeutic peptides to the target cells and therefore help disrupt the interactions between the host proteins and the hiv proteins .

a temporary stent endoprosthesis that does not require an interventional procedure for removal . the disintegrating stent is preferably made from a bioabsorbable polymer , such as by braiding polymer monofilaments into a tubular mesh shape , and the polymer has fracture initiation sites within it that promotes the disintegration of the stent into small pieces that are harmlessly transported out of the body by the vessel contents . fracture initiation sites may be created by controlling the heterogenous structure of amorphous and crystalline regions , by introducing internal or surface fracture initiation sites , or use of multiple strands with small section size .

disclosed are photodegradable and thermostable polymeric compositions based on a vinyl or vinylidene polymer such as polyethylene or polypropylene , at least one compound of a transition metal which is soluble in said polymer and which has photodegrading properties with respect to the polymer and at least one halogenated p - quinoid compound .

method of manufacture of foam coated rod - like elements particularly for supporting pot - grown plants in general comprising the step of arranging a plurality of elongated tubular members of plastic material in spaced parallel relationship to each other into a tank and casting synthetic foam forming chemicals into the tank . the foam forming chemicals are caused to expand within the tank up to a level higher than the uppermost tubular member . the tubular members are thereby embedded into the foam . after hardening of the foam from the formed foam block foam coated rod - like elements are cut out each containing embedded therein one tubular member .

a plasticized composition including at least one biopolymer selected from the group consisting of poly hydrobutyrate and phb copolymers ; and a plasticizer containing a saturated or unsaturated , linear or branched c 6 - 30 fatty alcohol , and a glycerol ester of a linear or branched , saturated or unsaturated c 6 - 24 fatty acid , wherein and are present in a ratio of 100 : 0 to 75 : 25 by weight is provided .

the invention relates to the conducting and to the monitoring , using an automatic machine , of the temperature rise of electrically heated components with which there is associated an identification chart comprising parameters which can be used for conducting and for monitoring this heating , the machine comprising apparatus for reading the chart and for initiating the determined heating program . according to the invention , the chart is divided into a number of zones into some of which are entered , in addition to the said parameters , additional data concerning some of them , the parameters and their associated data are read off using the said reading apparatus , and provision is made for at least some of these parameters to undergo conversions which are induced by some of the other associated zones as a function at least of the data which are contained therein . the invention applies particularly to the monitoring of welding together of plastic components .

the present invention relates to materials exhibiting the property of rubbery elasticity , consisting of molecules with a mass of between 9 and 9000 g / mol , all or some of the molecules having at least three groups capable of associating via non - covalent interactions . although consisting of small non - polymerized molecules that are not chemically crosslinked , this material exhibits properties of rubbery elasticity . according to an embodiment of the invention , this material exhibits rubbery elasticity at ambient temperature . above a certain temperature , the material flows like a simple liquid . the material is thermoreversible , i . e . after cooling , the material again exhibits the property of rubbery elasticity . this material is self - repairing and potentially recyclable , which is never the case with a chemically crosslinked elastomer . according to an embodiment of the invention , the molecules constituting the material of the invention bear associative groups of formula below : in which a denotes oxygen , sulphur or nh ; the carbon atoms of formula can be substituted . preferably , a denotes oxygen . advantageously , the material comprises molecules having at least 3 associative groups , and molecules having a single associative group . advantageously , the molecules are obtained from fatty acid derivatives .

this injection blow molding method has special provision for maintaining the plastic of a parison on a core rod at the orientation temperature of the plastic ; and stretching the plastic of the parison lengthwise of the core rod for orientation in the direction of one axis without any substantial increase in the diameter of the parison . after this orientation in one axis , the temperature is controlled to maintain an orientation temperature , and the plastic of the parison is then blown to a larger diameter so as to obtain orientation in another axis for &# 34 ; bi - axial orientation &# 34 ;. the core rod is covered by an elastic balloon , and provision is made for obtaining flow of the plastic on the core rod lengthwise of the rod during the first orientation operation .

a method of making an instrument cluster plastic film overlay for vehicle dash assemblies is provided . the method includes printing a digital image including at least one gauge scale indicator to a first surface of a plastic film using a digital printer . a scratch resistant coating is then applied to the first surface of the plastic film over top of the digital image . the plastic film is then cut to a shape of an instrument cluster display panel .

there is described a biaxially oriented polyolefin single or multi - layer film which comprises at least one core layer comprising a propylenic polymer component and either an ethylenic polymer component or a styrenic polymer component . the films have a dynamic loss modulus , at 3 hz and 25 ° c ., of 28 to 136 mpa and / or 73 to 135 mpa as well as a dynamic storage modulus , at 3 hz and 25 ° c ., of 630 to 2800 mpa and / or 1300 to 3000 mpa . these films are suitable for use as a label facestock with improved conformability for example to provide improved labels for squeezable containers .

in an anaerobic treatment method in which contaminated water is introduced into an acidification tank to decompose polymer components in the contaminated water into organic acids , and the effluent from the acidification tank is introduced into a methane production tank containing non - biological fluidized carriers so as to convert the acids into methane , the treatment is carried out stably and continuously by preventing the occurrence of floating of carriers in the methane production tank . the cod cr concentration of polymer components other than organic acids in the acidification tank effluent to be introduced into the methane production tank is controlled to be not more than 300 mg / l . this control prevents the occurrence of acid production reactions in the methane production tank and the consequent proliferation of microorganisms , and thereby suppresses sticking of carriers as well as the occurrence of floating and blockage by the carriers .

an all - plastic desk top file or tray easily user assembled from planar panels that lock together with either snap - in integral barb or lateral tongue and slot connections without the use of any tools , and the tray is modular so trays can be stacked vertically and horizontally and locked together .

a bioactive food complex product , method for preparing a bioactive food complex product and method for controlling disease using probiotics and quorum sensing inhibitors such as inhibitory furanones and other bioactive compounds included in both the continuous and dispersed phases of a bioactive food complex product . the product is comprised of a solids - in - oil or an oil - in - solids emulsion forming a first emulsion that is itself emulsified in polymer forming oil - in - polymer or solids - in - polymer emulsion complex . the bioactive complex is formed of two emulsions with the first emulsion comprising the dispersed phase and a hydrocolloid polymer serving as the continuous phase . the second emulsion complex is then crosslinked to form a physically stable matrix . the bioactive food complex or the first emulsion of the bioactive food complex then serve to deliver different bioactive components including probiotic bacteria and quorum sensing inhibitor molecules to the digestive tract and environment of animals such as shrimp or fish or other livestock raised commercially to effectively control bacterial disease by a novel combination of mechanism including : competitive exclusion , direct inhibit , digestion of cell - to - cell signaling molecules and direct inhibition of homoserine lactone and homoserine lactone regulated processes of pathogenic bacteria . thus , effective disease prevention and control is accomplished through the novel combined delivery and use of probiotic bacteria and quorum sensing inhibitory furanones .

a method of conditioning an activated sludge in a membrane biological reactor comprising adding to the activated sludge an effective amount of at least one water soluble cationic polymer to form a mixture of water and coagulated and flocculated suspended solids ; and separating the coagulated and flocculated suspended solids from the water by filtering through an ultrafiltration or microfiltration membrane .

a bio - adhesive supramacromolecular complex of the general formula : wherein r 1 is independently selected from the group consisting of an alkane unsubstituted or substituted with alkoxy groups ; r 2 is independently selected from the group consisting of c1 - 6 alkyl ; r 3 and r 4 are independently selected from the group consisting of optionally substituted aliphatic or aromatic alkyl ; r 5 is independently selected from the group consisting of h or c1 - 6 alkyl ; w is a hydrogen - bond accepting functional group - containing entity ; y is a carboxylic acid ester or amide linkage ; r is an independently selected peptide linking group ; t 1 , t 2 , t 3 and t 4 are independently selected polymer residues ; and m 1 , m 2 , m 3 , n 1 and n 2 are integers selected from at least 25 ; and wherein p has a molecular weight of about 1 × 10 3 to 1 × 10 7 and q has a molecular weight of about 1 × 10 3 to 1 × 10 7 . the complex provides controlled nitric oxide release over a longer period of time than prior art compounds in the locally delivery systems . novel compositions , methods of preparation , apparatus including layer - by - layer assemblies coating , electrospinning and ultrasonic atomization , skin coverings containing and medical use of the complexes are described .

disclosed is a foamed plastic material , particularly a foamed plastic material for making automobile interior parts , and a manufacturing method of the foamed plastic material . the foamed plastic material can be used in mass production by means of known injection molding processes and an automobile interior part manufactured with such a material shows a noble quality and a soft tactile impression similar to a manual surfacing material .

the present invention relates to diblock copolymers and more particularly to polycaprolactone - b - polyethylene oxide diblock copolymers used in micellar systems , for delivering a biologically active agent to a site there is provided a diblock copolymer compound comprising a hydrophilic block and a hydrophobic block , the hydrophilic block comprising a polyethylene oxide polymer , the hydrophobic block comprising a polycaprolactone polymer , the pcl polymer comprising a number of caprolactone monomers selected from 5 to 150 , the peo polymer comprising a number of ethylene oxide monomers selected from 30 to 100 . the diblock copolymer compound of the present invention may be used to form a micellar delivery system for delivering biologically active agents such as lipophilic drugs to sites such as the central nervous system . the hydrophobic reservoir obtained enables a larger amount of agent to be incorporated therein , with a slower release and without the damaging effects that such high doses would induce with known delivery systems .

the present invention relates to a container carrier and to packaging systems for containers and using the same . this invention pertains to carrier stock for machine application to substantially identical containers such as beverage cans having annular chimes , cylindrical side walls , and frusto - conical walls between the chimes and the side walls . in particular , the present invention relates to plastic film having apertures to securely retain drinks cans , food cans , bottles and similar containers , a method of applying the film and the resultant combination .

a process for producing laminated safety glass is disclosed , comprising depositing a film which comprises at least one function layer on a plastic sheet , inserting the sheet between a plurality of further layers , such as two polyvinylbutyral sheets which are in turn enclosed by glass panes , such that the plastic sheet projects beyond the edges of the other layers , clamping the plastic sheet along its projecting sections , and laminating the layers . a clamping device for performing the process and a laminated safety glass produced by the process are also disclosed .

a machine for the continuous production of plastic bags utilizes a servo drive motor to drive the machines film web draw roll assembly and through a seal roll index gear also to drive a seal roll of the machine in coordination with the servo driven draw roll . control of the servo motor is through a motion controller receiving inputs form the servo motor .

a method is provided for processing a mixture raw automobile shredder residue , and virgin and / or contaminated synthetic plastic material , e . g ., raw post consumer plastic waste . by means of this method , automobile shredder residue produced by a conventional automobile shredder is formed into a first stream by being ground in a first granulating zone to a reasonable small granular size using conventional equipment . a second stream comprising virgin and / or contaminated synthetic plastics material is ground in a second granulating zones . the two streams are combined to provide a processable mixture . the processable mixture is introduced into a high intensity , mixer . the processable mixtures transformed into a semi - molten discharge stream by the kinetic energy imparted to the processable mixture by the mixer are simultaneously vented from the mixer . the semi - molten mixture emerging from the mixer is then introduced into an extruder or press where it is formed into a mass of desired shape , and cooled . this method allows for the production of useful , shaped masses from two different classes of materials which have been otherwise treated as waste .

a multilayer structure with improved permeation for atmospheric diffusion of aromatic products wherein the structure comprises : a permeable membrane wherein said permeable membrane comprises at least two polymeric layers wherein the polymer of each layer is independently selected from the group consisting of polyethylene , very low density polyethylene , low density polyethylene , ethylene methylacrylate copolymer ; a release layer wherein said release layer comprises a nylon polymer or a ethylene vinyl alcohol copolymer wherein the release layer is adhered to most inner polymeric layer of the permeable member which comprises the permeable membrane and wherein the adhesion between release layer and the adjacent layer of the polymeric permeable membrane is a relatively weak bond compared to the bond between the layers of the polymeric permeable membrane ; and an impermeable membrane wherein said impermeable membrane comprises one or more layers wherein the materials which comprise the individual layers of the impermeable membrane are independently selected from metal or foil and wherein said impermeable portion is laminated to said release layer .

it has been discovered that waste cross - linked polymer materials both synthetic and natural can be conveniently depolymerized at slightly elevated temperatures and moderate pressures by the action of a liquid chemical reagent . the proposed inexpensive process results in a substantial to total depolymerization of synthetic polymers and thereby recovers valuable liquid and solid materials . when applied to lignocellulosic biomass , the proposed process , depending on the reaction conditions , either unlocks the lignin - hemicellulose matrix making cellulose more available for fermenting microorganisms or results in carbonization , or coalification of the biomass that may be desirable in terms of sequestering excessive carbon from the earth &# 39 ; s biosphere .

in tire tread formulations , blends of rubbers having low and high glass transition temperatures have significant advantages over blends made with rubbers having intermediate glass transition temperatures . however , blends of rubbers having low and high glass transition temperatures exhibit poor processability . this invention deals with improving the processability of tire tread formulations which are made by blending rubbers having both low and high glass transition temperatures that offer ultra low rolling resistance without sacrificing rolling resistance or tread wear characteristics . this invention more specifically discloses a tire tread rubber composition which is comprised of about 60 phr to about 90 phr of a high cis - 1 , 4 - polybutadiene rubber , wherein the high cis - 1 , 4 - polybutadiene rubber has a glass transition temperature which is within the range of about − 104 ° c . to about − 80 ° c ., about 10 phr to about 40 phr of at least one additional rubbery polymer selected from the group consisting of polyisoprene rubber , polybutadiene rubber and styrene - isoprene - butadiene rubber , wherein the additional rubbery polymer has a glass transition temperature which is within the range of about − 30 ° c . to about − 10 ° c . isoprene - butadiene rubber , about 20 phr to about 60 phr of carbon black , wherein the carbon black has a dbp absorption value of at least 140 cm 3 / 100 grams and wherein the carbon black has a ctab adsorption area which is within the range of about 60 to about 90 .

geostabilzing constructs made from synthetic materials such as recycled tires and plastic polymers are provided in forms engineered to stabilize large structures such as buildings , roadways , runways , parking lots , dams , levees and waste containment facilities . methods and geostabilizers of the invention provide alternatives or complements to conventional uniform and non - uniform gradations of earthen materials thereby decreasing the amount of conventional materials needed to stabilize a large structure . stabilizers of the invention impart superior resistance to compressive forces and can be designed and manufactured with to possess defined properties such as permeability to the flow of gases or liquids , compressibility , shear strength , rigidity , frictional coefficients , compactability , density , and resistance to movement . embodiments of the present invention can be used in conjunction with various construction materials like pipe and culverts .

a method of bonding materials . the method comprises providing a polymer ; providing a second material ; contacting the polymer and the second material at a low contact pressure in the absence of a solvent or an adhesive ; maintaining the polymer at a temperature less than a bulk tg of the polymer ; introducing a gas at low pressure ; and bonding the polymer and the second material .

a new method for making polymeric systems for the sustained release of macromolecular drugs is described . the method consists of mixing drug and polymer , e . g . ethylene - vinyl acetate copolymer powders below the glass transition temperature of the polymer , and compressing the mixture at a temperature above the glass transition point . the macromolecule is not exposed to organic solvent during the fabrication process . the sustained release and bioactivity of macromolecules is unchanged throughout the pressure casting and release processes .

the present invention relates to a composition of thermal conductive layer and the preparing method thereof , which comprises forming a surface coating by a composition of boron nitride and binding reagent in order to enhancing the thermal disperse effect of the surface . it applies for the material surface of heat exchange metal blocks , piece materials , heat exchanger , metal back plate , metal and the plastic shell .

it comprises : preparing an aqueous phase containing surface active suspensor agents and , optionally , a chemically or biologically active chemical substance ; preparing an organic phase containing a biocompatible polymer or monomer and , optionally , a lipid or chemically or biologically active chemical substance ; mixing both phases in a continuous manner in a constant average phase - volume ratio , continuously removing a recently formed colloidal suspension ; continuously eliminating the solvent from the colloidal suspension ; and completely eliminating the organic solvent and part or all of the water in order to obtain the desired concentration of nanospheres or dry product . application in biomedicine , pharmacy , medicine , cosmetics , chemical industry , agriculture , veterinary science , etc .

a blow molded , thin walled plastic container for filling with a liquid whose temperature is elevated above ambient . the container includes a first portion of a first diameter , a second portion of a second diameter , and reduced diameter region between the first and second portions . the reduced diameter portion extends circumferentially around the container and a plurality of ribs which are located to extend between the first and second portions . the ribs form reinforcing members in the reduced diameter portion and increase the top load capabilities of the container . the first and second portions can both be formed in the shoulder portion of the container or one in the shoulder portion and one in the sidewall of the container .

a method for forming a tubular printing blanket includes the steps of applying a application layer to a base , applying a polymer over the application layer so as to form as flexible inner tubular sleeve , at least one of the application layer and the polymer being an innermost layer of the tubular sleeve , and applying a print layer over the tubular sleeve . the interior of the flexible tubular sleeve can collapse to permit better storage of the blankets .

ethylene , alpha - olefin , non - conjugated bicyclic diene elastomeric polymers and / or polymer blends when compounded and formed into a calendered sheet , show surprising improvements for the combination in both green strength and peel adhesion in the unvulcanized state . such green strength and peel adhesion provide benefits during calendering operations and subsequent joining of calendered sheets , while the compounded elastomeric polymers are in their green or unvulcanized state .

the invention relates to synthetic , bioabsorbable polymer materials and implants , like fibres , sutures , meshes and other tissue management , wound closure or tissue engineering devices , which contain : a ) a bioabsorbable polymeric matrix ; b ) antibiotic and / or anti - inflammatory agent particles or mixture thereof , dispersed in the matrix , and c ) optionally an additive agent to facilitate device recognition and / or handling to facilitate the use and application of finalized product . in the matrix , cavities around the particles are induced by mechanical processing of the matrix phase . a preferred embodiment of the present invention is a device that provides a sustained release of antibiotic agent over several days to several weeks for the prevention or treatment of infection . the sutures may be effectively implanted into or in the vicinity of : 1 ) infected tissue , 2 ) potentially infected tissue , or in tissues where infection , should it occur , leads to disastrous consequences .

a method and apparatuses for determining the total content of proteases by means of measuring their enzyme activity after previous deinhibition is disclosed . in biological samples , lysosomal proteases are completely or partly inhibited . a method proposed for the deinhibition entails immersing a solid support material as plastic strip to which is linked , covalently or by adsorption , an inhibitor - binding substance which binds the inhibitor corresponding to the protease more strongly than the protease in the sample for measurement . after the deinhibition has taken place , the plastic strip is removed from the liquid sample for measurement , and the sample for measurement is passed on for measurement of the enzyme activity . fluorogenic substrates from which the fluorogen 7 - amino - 4 - trifluoromethylcoumarin is eliminated proved to be particularly advantageous for the activity measurement . these substrates make it possible for the sensitivity on measurement in microtitre plates with a fluorescence reader to be at least 10 times higher compared with conventional amc substrates in blood serum , and thus for the fluorimetric determination of such enzyme activities in blood serum to be efficient with this measuring arrangement which is widely used in clinical laboratories .

a gas permeable , liquid impermeable membrane for use with gas sensors consists of a film forming polymer which incorporates nanoparticles selected to improve one or more of the following : permeability to gases , to selectively regulate permeability of selected gases through the membrane , to inhibit microbial growth on the membrane . a capsule shaped container consists of wall material biocompatible with a mammal gi tract and adapted to protect the electronic and sensor devices in the capsule , which contains gas composition sensors , pressure and temperature sensors , a microcontroller , a power source and a wireless transmission device . the microprocessor receives data signals from the sensors and converts the signals into gas composition and concentration data and temperature and pressure data for transmission to an external computing device . the capsule wall incorporates gas permeable nano - composite membranes with embedded catalytic and nano void producing nanoparticles , enhancing the operation , selectivity and sensitivity of the gas sensors .

stabilizer compositions useful for protecting clear polyvinyl chloride and other clear halogenated polymer compositions against discoloration and degradation caused by exposure to light and weathering in addition to heat comprising an organotin compound selected from the group consisting of organotin mercaptides , sulfides of organotin mercaptides , organotin sulfides , and / or organotin carboxylates , and a free phenyl salicylate compound . these stabilizers offer improved ultraviolet light stability and weatherability to clear polyvinyl chloride resins designed for weatherable applications without detracting from the desired thermal performance . clear polyvinyl chloride resin and other clear halogenated polymer compositions are also provided , containing these compounds .

there is disclosed a method for manufacturing products through the use of waste materials of various kind , such as heterogeneous plastic materials , wood , minerals , etc ., derived from recycling processes , differentiated waste collection systems , solid urban wastes , industrial processing scraps or by - products , and the like , such products being adapted to be used in a wide range of most varied applications , particularly though not exclusively for manufacturing structural parts and decorative finishes for office furniture as well as furniture for cinematoghraph theatres , communities , concert halls and the like .

a moisture - permeable acoustic lamina which is usable as a wall covering has a foraminous woven fabric layer adhered to a fabric backing by a discontinuous thermoplastic polymer layer . the woven fabric preferably has an embossed undulate outer surface to enhance the acoustic properties of the lamina and to impart an aesthetic textural appearance . the individual yarns of the woven fabric are preferably substantially uniformly coated with a polyvinyl chloride plastisol to impart stain and wear - resistance , inhibit the growth of molds , fungi , bacteria and the like , and to enhance the appearance of the exposed face of the lamina . the moisture - permeable lamina structure allows wall covering paste , used to adhere the lamina to a wall , to dry at an acceptable rate , yet does not allow paste to bleed through the foraminous woven fabric layer .

improved solventless processing technology for additive blends containing a polymer carrier , including those which have high level of additives , is described . high concentrations of low - melting , sticky additives lead to phase separation and extrusion instability , such that pellets cannot be formed from such additive blends by traditional extrusion process . these blends include those with a high level of active additives that have been described in the literature as type a superblends . here a polymer typically acts as the carrier of the additives . the new and improved technology involves the solid state compaction processing , using a tubular die , of such impossible - to - pelletize additive blends of the type a composition to produce commercially useful pelletized additive blends .

it has been determined that a specific metaplastic lineage that contains immunoreactivity for a trefoil polypeptide , spasmolytic peptide , is associated with and gives rise to the vast majority of human adenocarcinomas . the identification of this spasmolytic polypeptide expressing metaplasia is a major factor for grading of biopsies of the stomach to assess risk for gastric cancer . it also forms the basis of a method for serological screening for those at risk for gastric cancer . in a preferred embodiment , antibodies to spasmolytic peptide are used in immunostaining of biopsies of gastric tissue obtained by endoscopy for grading biopsies . those patients having these cells , characterized by a morphology more typical of a type of cell present normally in the intestine and not stomach , brunner &# 39 ; s gland cells , are at risk of developing adenocarinoma . since these cells express hsp , antibodies or nucleic acid probes hybridizing to mrna encoding hsp , can be used for rapid detection of the cells in tissue biopsies . the antibodies can also be used in serological tests for screening and following patients at risk for gastric cancer . in combination with evidence of previous or present invention with h . pylori , the tests are predictive of the liklihood of developing adenocarcinoma .

disclosed is a double - sided grating waveguide biosensor . the double - sided grating waveguide biosensor is used to sense the properties of a sample solution . the double - sided grating waveguide biosensor comprises a sequential stack of a plastic grating having a grating part , a waveguide layer having a double - sided grating structure , and a channel chip . furthermore , the sample solution is guided into the channel chip ; the light beam is coupled into the waveguide layer via the double - sided grating structure , propagates in the waveguide layer , and penetrates outward . the double - sided waveguide biosensor detects the properties of the sample solution via a variation of a light beam intensity of the outgoing light beam .

a method and apparatus for removing organic contaminants from an aqueous phase in which the contaminant is solubilized . in the method the aqueous phase is passed through a fluid - pervious filtration media which has been infused with an absorbtion composition comprising a homogeneous thermal reaction product of an oil component selected from the group consisting of glycerides , fatty acids , alkenes , and alkynes , and a methacrylate or acrylate polymer component . the absorbtion composition is cured in situ at the filter . the contaminant is immobilized at the media , and the purified filtrate having passed through the filtration media is collected as the product . the media comprises a central core which is surrounded and wrapped by a plurality of overlying sheets of further fluid pervious media , the overlying sheets creating void spaces between sheets for trapping of at least some of the separated contaminants .

the present invention refers to a polymeric film comprising an odor barrier material and being able to pack malodorous waste .

the present invention relates to a sealable laminated film which contains a copolymer consisting of ethylene and α - olefine , wherein the mpe copolymer is characterized as follows : polymerised with metallocene catalysts , crystallite melting point less than 110 ° c ., preferably less than 105 ° c ., melt index mfr from 0 . 5 to 10 g / 10 min , molecular weight distribution m w / m n less than 3 , preferably less than 2 . 5 .

a laminate has alternating metal layers and at least one plastic bonding layer . the metal layers each comprise at least two metal layer sections that have mutually overlapping edges bonded to one another . to even out the differences in thickness , a fill is provided which has at least a thickness such that at the location of the fill the laminate has a thickness equal to the thickness at the location of the overlapping edges .

there is provided a multiple - component tampon applicator formed from at least three separate components . a fingergrip having a reduced cross - section as compared to that of the barrel may be formed such that it is a separate component or is integrally formed with a barrel component . the reduced cross - section fingergrip provides exceptional grippability to the user . the multiple components may be formed from materials including , for example , biopolymer including starches and proteins , cardboard , heat shrink plastic , paper slurry , plastic , plastic tubing , pulp slurry , pulp - molded paper , or any combinations thereof . prior to assembly of the applicator and prior to loading the barrel component with an absorbent pledget , petals may be formed on the insertion end of the barrel using existing processes and equipment . alternatively , a separate insertion tip component having petals may be formed . this separate component may then be connected to the barrel component either before or after an absorbent pledget is loaded into the barrel component .

an infrared reflecting laminated glass having more than 70 % transmission of visible rays comprising a pair of glass sheets with flexible , laminated interlayer films is disclosed wherein the interlayer films comprise a pair of polyvinyl butyral interlayer films which hold an infrared reflecting plastic film . the infrared reflecting plastic film is formed by sequentially coating , on a plastic film , a tungsten oxide layer havig a thickness of 180a to 500a or 1400a to 1600a , a silver layer having a thickness of 80a to 150a , and a tungsten oxide layer having a thickness of 180a to 500a or 1400a to 1600a , wherein at least one of the polyvinyl butyral interlayer films incorporates an ultraviolet absorbent .

an automotive display panel having a plurality of clear plastic substrates , wherein color - printed inks or foils are imprinted on the substrates . each plastic substrate includes digits and identifying marks in selected areas . after creating a metallic - looking finish on the substrates , finely configured lines , such as concentric circles or radial lines , are printed on the color - tinted layer to create a desired appearance . thereafter ,, when the printing is completed , the substrates may be formed in multi - level configurations for providing a three - dimensional appearance . backlighting is also provided to illuminate the selected areas of the substrates .

an automated system for producing a slug having a repeatable shape from a plastic bottle , the automated system comprising : a housing having an elongated shape , an axis in a direction of elongation , and an opening configured to receive the bottle in a generally coaxially orientation with the housing ; a compacting subsystem adapted to compact the bottle substantially in a first direction within the housing ; and a slug processing subsystem adapted to form a slug having an essentially predefined form from the compacted bottle , the slug processing subsystem adapted to form the slug by application of force in at least a second direction , substantially normal to the first direction ; wherein the slug processing subsystem is adapted to form a slug from a single compacted bottle ; wherein the slug processing subsystem is configured to form a slug having a flattened geometric shape ; wherein the flattened geometric shape is a polygon having a characteristic dimension less than 90 millimeters .

the method of inhibiting the reduction of the bond strength by water of a metal - thermoplastic polymer - metal sandwich , where the thermoplastic core contains carbon to carbon double bonds , by incorporating 0 . 01 to 1 . 0 % of a fatty acid component which comprises at least one fatty acid as an additive .

a microwave polymerization system for dentistry utilizes specifically controlled microwave energy to cure polymer materials so as to produce dental prosthetics , such as dentures , bridges and crowns , that are made in an extra - oral setting such as a dental laboratory or dental office , and to create dental composites for fillings and veneers that are used in an intra - oral setting directly in the patient &# 39 ; s mouth . unlike the microwave energy delivered by commercial microwave ovens which is controlled by pulsing a maximum voltage pulse on and off at a given duty cycle , the system utilizes metered and controlled microwave energy that is preferably continuous and voltage controlled , and regulates the application of this microwave energy by use of various feedback and control mechanisms . the metered and controlled microwave energy enables a higher degree of conversion of monomers into polymer chains in the polymerization process , thereby enhancing the physical and biocompatibility characteristics of both dental prosthetics and dental composites made from polymers . in an extra - oral embodiment , gaseous pressure is applied to the resin matrix during the polymerization process to further enhance the polymerization process . in an intra - oral embodiment , the polymerization process can be accomplished with less overall energy and with composite - matrices that maximally absorb the microwave energy so as to reduce heating of adjacent tissue .

methods of inhibiting the uptake of cationic biocides into medical devices such as contact lenses and implants are described . methods of stabilizing emulsions containing cationic biocides are also described . in particular , the present invention provides for the use of polymers acting as labile anionic polyelectrolytes to reversibly bind cationic biocides . the reversible binding can reduce the deleterious effects of cationic biocides while maintaining biocidal activity . preferred polymers include galactomannan and polyvinyl alcohol .

a collapsible reel for receiving windings of wire or the like includes a pair of opposed flange members and a plurality of folding support members defining the reel core and hingedly attached therebetween . each of the flange members may include a plurality of pockets for receiving the plurality of folding support members when the reel is collapsed such that the thickness of the collapsed reel is the substantially the thickness of the two flanges . an outward arcuate contour is provided for winding the wire or like . the hinge structures each have a hinge axis and a radially displaced force transfer contact portion whereby compressive loading of the reel is not conveyed through the hinge axis . interlocking surface structure is on the outside facing surface such as multiplicity of the reel flanges to facilitate stacking . the flanges , the folding core arms , and the hinge structure may all be formed of the same polymeric composition to facilitate grinding of the entire assembled reel for easy recycling .

a scraper for a scraper chain conveyor , having a top web , on which a chain attachment region for connecting the scraper to a scraper chain is configured , and having scraper wings for guiding the scraper on side profiles and bottom of a scraper chain conveyor . in order to provide scrapers with which a higher conveying output or a reduction of the drive output to be installed can be achieved , and which also enable a worn or defective scraper to be changed below ground , it is provided according to the invention that the scraper wings consist of a holding portion anchored to the metallic top web and a plastics sliding insert which can be releasably fastened to the holding portion . for the sliding inserts and their retention , various embodiments are proposed .

a clear multilayer film for coating synthetic environmental surfaces includes an exposed protective layer and an underlying cushioning layer . the exposed layer is primarily a polymer blend of a fluorine substituted olefin polymer , such as polyvinylidene fluoride , with an acrylic polymer . the cushioning layer is of a low modulus polymer selected from among impact modified acrylic polymer , ethylene vinyl acetate polymer and metallocene catalyzed polyethylene and having an elastic modulus below about 30 , 000 psi . the cushioning layer should be substantially free of all fluorinated polymers . the multilayer film can have an optional additional thermally adhesive layer of a blend of a fluorine substituted olefin polymer with an acrylic polymer . the multi layer film offers superior protection to such substrates as outdoor building siding , vehicle body panels , and signs from stains , weather conditions , and especially impact damage . ally of the layers can also include fillers and additives adapted to provide a very low gloss appearance .

the present invention relates to polymeric compositions useful in the manufacture of biocompatible medical devices . more particularly , the present invention relates to certain cationic monomers capable of polymerization to form polymeric compositions having desirable physical characteristics useful in the manufacture of ophthalmic devices . such properties include the ability to extract the polymerized medical devices with water . this avoids the use of organic solvents as is typical in the art . the polymer compositions comprise polymerized silicon - containing monomers end - capped with polymerizable cationic hydrophilic groups .

an apparatus for injection molding two compatible polymeric materials , in which two substantially coaxial extrusion screws are used to plasticize the two materials into a common accumulation space . the charge comprising multiple layers of material is then injected into a closed mold by means of forward axial motion of the outer screw with respect to its enclosing barrel . once inside the mold , the first material forms a skin layer totally or partially surrounding the other material . in this way a part having a plurality of material properties may be produced in a single operation .

the invention provides a novel antibacterial compound and a process for producing it . futhermore , the invention provides a novel antibacterial polymer composite comprising a polymer and the antimicrobial compositon .