baber/WOPTO huggingface dataset:
Patent CA-2013747-A1 (CA)
Title: Monovinylidene aromatic and conjugated diene copolymer coating compositions comprising sulfoalkyl monomeric emulsifier
Inventor: GUILLAUME JEAN-LUC
IPC: C08F212/04
Filed: 1990-04-03
Abstract: It has been found that monovinylidene aromatic/conjugated diene/ethylenically unsaturated acid copolymer compositions are provided with good combinations of physical properties when a sulfoalkyl monomer is employed in minor amounts in such polymer in place of emulsifying additive(s). In particular, the combinations of wet and dry pick resistance have been shown to be maintained or improved when paper coating formulations are prepared from latex polymer compositions according to this invention. Sulfoalkyl (meth)acrylate salts and 2-acrylamido-2-methylpropane sulfonic acid salts are shown to be suitable sulfoalkyl monomers for this purpose.
Patent CA-2014236-A1 (CA)
Title: Process for enhancing the compatibility of polyamide and polyester in blends
Inventor: BHATTACHARJEE HIMANGSHU R
IPC: C08L67/02
Filed: 1990-04-10
Abstract: PROCESS FOR ENHANCING THE COMPATIBILITY OF       POLYAMIDE AND POLYESTER BLENDS                  ABSTRACT OF DISCLOSURE      A process for enhancing the compatibility of polyester and polyamide in blends by adding thereto an effective amount of an aryl phosphoryl azide compound as for example diphenyl phosphoryl azide, and thereafter heating the composition until the desired enhancement in compatibility is obtained as evidenced by a lower of the individual melting points of the polyester and polyamide in the blend.
Patent CA-2017800-A1 (CA)
Title: Derivatives of quinoline fused to a five-membered heterocyclic ring
Inventor: BRILL GUNTER
IPC: A01N43/90
Filed: 1990-05-30
Abstract: O.Z. 0050/40871 ABSTRACT OF THE DISCLOSURE: Quinoline derivatives fused to a five-membered heterocyclic ring and of the formula   where R1  is hydrogen, halogen, carboxyl or substituted or unsubstituted alkyl, Y   is nitrogen or C-R2, where R2  is hydrogen, halogen, hydroxyl, alkoxy, alkylthio, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted benzyl, phenethyl, phenyl or naphthyl, or a substituted or unsubstituted 5- or 6-membered heterocyclic ring with one or two heteroatoms selected from the group consisting of oxygen, sulfur and nitrogen, X   is oxygen or N-R3, R3 being hydrogen, substituted or unsubstituted alkyl, alkenyl, alkynyl, cycloalkyl or substituted or unsubstituted benzyl, processes for their manufacture and their use for combating unwanted plant growth.
Patent CA-2019014-A1 (CA)
Inventor: BOX THOMAS
IPC: B65D21/02
Filed: 1990-06-14
Abstract: ABSTRACT A stackable crate and stackable crate system, wherein each crate comprises: a pair of opposing sidewalls, a back wall coupled to the sidewalls, and a front wall coupled to the sidewalls.  The front wall has a first substantially rectangularly shaped opening at the top portion and a second substantially rectangularly shaped opening at the bottom portion of the front wall, thereby defining in the front wall a central portion with the bottom edge of the central portion extending to form at each end a lower leg segment and the top edge of the central portion extending to form at each end an upper leg segment.  A bottom side is planar as it extends away from the back wall but tapers upwardly to merge with the central portion.  The bottom side is joined to the sidewalls and to the back wall to define a storage compartment in the interior of the crate.
Patent CA-2019362-A1 (CA)
Title: Acid halide and/or acyllactam functional compounds and polylactam block copolymers derived therefrom
Inventor: VRIESEMA BINDERT K
IPC: C07C307/00
Filed: 1990-06-20
Abstract: (27) ABSTRACT OF THE DISCLOSURE   The invention relates to acid halide and/or acyllactam functional compounds, to polylactam block copolymers derived therefrom by lactam polymerization at a lactam group, and to the use of such block copolymers in polyamide mixtures.  The compounds contain liquid crystalline compounds or compounds which combine with acyllactam to form a compound with liquid crystalline properties.  The products of this invention are useful as accelerators in the preparation of nylon block copolymers, in particular block copolymers with improved stiffness.  The block copolymers are useful in products requiring good tensile strength, chemical resistance and/or heat resistance, and are particularly useful in electrical engineering applications and in the aircraft industry.
Patent CA-2021997-A1 (CA)
Title: Block for concrete wall form construction
Inventor: HOLLAND GEARY C
IPC: E04B2/26
Filed: 1990-07-26
Abstract: This invention provides a block to be used with the block means of similar character to create a form for a concrete wall.      The blocks are of lightweight plastic and are of substantially rectangular shape, and have opposite ends, opposite sides, upper and lower interlocking surfaces, a substantially hollow interior compartment, and opposite end walls and opposite side walls. The upper interlocking surfaces comprise an elongated longitudinal rib having a rectangular bass and an inverted V-shaped upper surface. These ribs have a width less than that of the side walls, and have a substantially horizontal ledge adjacent either side thereof. Lateral extending ribs spaced from each other extend across the ledges and ribs. The lateral extending ribs also have an inverted V-shaped upper surface which extends from a lower rectangular base portion. A plurality of cylindrical plugs extend upwardly in spaced relation from the ribs. The lower interlocking surface is a mere image of the upper interlocking surface. Spanner ribs with a U-shaped notch in the upper portion thereof extend through the interior compartment of the block.      The notches are adapted to receive an elongated reinforcing rod.      The ends of the blocks have U-shaped openings into which a U-shaped plug can be inserted in locked condition to dam off the end of the block which appears at the end of the concrete wall to be poured.
Patent CA-2024816-A1 (CA)
Title: Upflow/downflow heated tube circulating system
Inventor: ALBRECHT MELVIN J
IPC: F22B21/34
Filed: 1990-09-07
Abstract: A fluid flow circuit for a boiler having a combustion chamber and an exhaust passage. In one embodiment there is provided at least one upflow vaporative generating bank module in the exhaust passage and at least one downflow evaporative generating bank module in the exhaust passage, positioned downstream of the upflow module. One or more upper downcomers are connected to a steam drum and supply water to the lower header of the upflow module and to the upper header of the downflow module. If needed, the convection pass wall enclosures can also be fed by the upper downcomers to their upper inlet headers. One or more lower downcomers may be connected to each lower header of the downflow module (and to the lower outlet headers of the convection pass wall enclosures) for supplying the water to a plurality of furnace circuits which extand along the combustion chamber in the boiler. The opposite end of each furnace circuit is connected to one or more risers which, in turn, are connected to the steam drum. The upper header of the upflow module is also connected to the steam drum through one or more risers for completing the circuit.
Patent CA-2025817-A1 (CA)
Title: Switched wide dynamic range
Inventor: DION BRUNO Y
IPC: H03F17/00
Filed: 1990-09-20
Abstract: SWITCHED WIDE DYNAMIC RANGE AMPLIFIER                  Abstract of the Disclosure There is disclosed an amplifier switchable between transimpedance modes and a follower mode of improved dynamic range for use in a receiver of an optical electric circuit.  The amplifier circuit includes a photodiode, an amplifier stage, and first and second feedback paths.   The amplifier stage has an input connected to the transducer to amplify the electrical signals and has an output.   The first, resistive, feedback path is coupled between the output and the input of the amplifier.  The second feedback path is responsive to the gain of the electrical signals at the output of the amplifier stage and is selectively coupled and uncoupled across the input and output of the amplifier stage.  The second feedback path has a resistance less than the resistance of the first feedback path and has a capacitance coupled to ground from at least a portion of the resistance to determine a mode cross-over frequency. The amplifier switches its feedback from the first feedback path to the second feedback path to improve the dynamic range of the amplifier.
Patent CA-2026012-A1 (CA)
Title: Water-based autoxidisable coating composition
Inventor: TAYLOR PHILIP L
IPC: C09D133/02
Filed: 1990-09-24
Abstract: ABSTRACT "Water-Based Autoxidisable Coating Composition"     A  water-based autoxidisable coating composition, especially a gloss or partial gloss coating composition (eg paint,  varnish, woodstain or  timber preservative) suitable  for  application  at  ambient temperatures which comprises  water, minimal  organic cosolvent and  a partially esterified carboxylic acid film-forming copolymer at least partially neutralised by monovalent cations wherein the copolymer  contains added 3-allyloxy-2-hydroxypropyl  groups  or  certain analogues derived  from  addition of  allyl  glycidyl ether or certain of its analogues to carboxylic  acid groups, in a copolymeric backbone portion derivable from a prepolymer of weight average molecular  weight less than 30 000.  The partially esterified copolymer has an acid  value of  25  to 60  and  preferably  a dynamic  solution  viscosity  of 1  to  500   Pa.sec measured in 1-methoxy-2-hydroxy propane by oscillatory parallel plate  rheometer.  The  coatings lap well, dry  quickly and  achieve acceptable  water resistance.   Also   the   optionally   unneutralised copolymer and the coating composition when containing a minor amount of particulate copolymer which is found to improve gloss.  Discolouration on ageing may be  improved  by neutralising  with  Group  1  metal cations.
Patent CA-2027490-A1 (CA)
Title: Thermal dye transfer receiving element with subbing layer for dye image-receiving layer
Inventor: HENZEL RICHARD P
IPC: B41M5/40
Filed: 1990-10-12
Abstract: THERMAL DYE TRANSFER RECEIVING ELEMENT WITH SUBBING LAYER FOR DYE IMAGE-RECEIVING LAYER                   Abstract A dye-receiving element for thermal dye transfer includes a polyolefin support, a polymeric dye image-receiving layer, and a polymeric subbing layer having an inorganic backbone which is an oxide of zirconium between the polyolefin support and the dye image-receiving layer which provides improved adhesion.
Patent CA-2029098-A1 (CA)
IPC: G11B27/00
Filed: 1990-10-31
Abstract: ABSTRACT   A mass data storage unit includes a plurality of first data  storage modules  for containing  tape cassettes  that form a mass information storage library,  a data directory archive comprising a data storage medium for maintaining a directory  of  the  information  contained  on  each  data storage  module  tape  cassette,  and  data  record/playback modules for receiving any selected tape cassette from any data  storage  module  in  the  mass  storage  library,  thus providing  global  access  to  the  media.   A  plurality  of interface  computers  are  coupled  to  a  plurality of host computers  for receiving data and  for  generating  request signals   to  access  information  stored  on  said  tape cassette.  A file directory is coupled to the interface computers and the data directory archive for receiving the request  signals,  locating in the  data  directory  archive the  address  of  the  tape cassette  containing the stored information and generating a data address location output signal  for  the  tape  cassette  containing  the  stored information.  A control computer is coupled to the file directory and the mass storage library for receiving the data  address  location  output  signal  from  the  file directory and in response thereto generating a signal for causing the selected  tape  cassette  in the  data  storage module containing  the  requested information to be loaded into   a  selected   data   record/playback   unit.    An input/output data channel couples  the interface computer generating the access request signal to the selected data record/playback module for selectively reading the stored information from and writing  data  to  the  selected  tape cassette.
Patent CA-2029272-A1 (CA)
Title: Means for extracting energy from ambient thermal systems
Inventor: HORSLEY PETER B
IPC: F02G1/043
Filed: 1990-11-05
Abstract: ABSTRACT Thermodynamic cycles with gas as the operating fluid are not efficient unless there is a large temperature difference or a large pressure difference. This limitation permits only a small portion of the available waste energy to be converted. In this invention a novel method is used to increase the density of aconfined gas by cooling the gas in many small incremental steps. The gas is cooled in many small compartments and permitted to expand freely from one compartment to the next. This process is equivalent to cooling a gas to a low temperature atnearly constant pressure, without producing any heat of compression. When the gas is re-heated, it expands and performs work as in a normal thermodynamic cycle. The result is the extraction of most of the available energy, which is converted to useful rotary energy in the process.
Patent CA-2030318-A1 (CA)
Title: Variable displacement high pressure pump with internal power limiting arrangement
Inventor: STOCCO JOSEPH A
IPC: F04B1/29
Filed: 1990-11-20
Abstract: File No. 390 88-001 (LA 8810) ABSTRACT OF THE DISCLOSURE            VARIABLE DISPLACEMENT HIGH PRESSURE PUMP    A variable displacement piston pump includes a plurality of axially aligned pumping cylinders with a drive shaft extending therebetween having a pivotable swash plate disposed in a relatively dry cavity at one end of the drive shaft for operating the pumping cylinders, and a reaction thrust plate on the other end of the drive shaft for providing a reaction force on the drive shaft opposite that provided by the swash plate.  An inlet shaft seal prevents fluid, which enters the pump at the inlet port, from filling the mounting housing and submerging the mount shaft portion of a rotating assembly supporting the swash plate.  Two needle roller bearings support the swash plate and transmit torque from the drive coupling to the swash plate.  A high pressure fluid restrictor meters hydraulic control fluid to the two needle bearings.  Pump power is limited by a pressure compensator arrangement which receives direct feedback of swash plate pivoted position, whereby a minimum pressure at a predetermined pump flow is established.
Patent CA-2032159-A1 (CA)
Title: Heteroatoms-containing tricyclic compounds
Inventor: EDMUNDS ANDREW J F
IPC: C07H19/01
Filed: 1990-06-13
Abstract: A B S T R A C T:               HETEROATOMS-CONTAINING TRICYCLIC COMPOUNDS     The compounds of formula I                                                     I   wherein the substituents have various significances, possess pharmacological, particularly antiinflammatory and immunosuppressant activity.   They can be prepared by one or more of the following process variants: reduction, deprotection, acylation, reaction with N,N'-carbonyl- or N,N'-thiocarbonyldiimidazole, halogenation, splitting off of hydrogen halide, reaction with a hydrogen carbonate, radical deoxygenation, dehydration or reaction with diazomethane or -ethane, optionally under transient protection of reactive groups which it is not desired to react.
Patent CA-2034055-A1 (CA)
Title: Impact modified thermosets
Inventor: ELEVELD MICHIEL B
IPC: C08L63/00
Filed: 1991-01-11
Abstract: A B S T R A C T                 IMPACT MODIFIED THERMOSETS      A cured thermosetting resin composition having a Tg of at least 135 °C and an Impact Strength of at least 70 kJ.m-2 and being obtainable by the curing of a polyglycidylether of a polyhydric phenol with an epoxy group content of from 2 to 8 mol.kg-1, in the presence of styrene monomer and a carboxylated acrylonitrile/diene copolymer, the latter being employed in an amount of from 5 to 30 phr, the styrene monomer being employed in an amount of from 10 to 35 phr, provided the total amount of styrene monomer and said copolymer in the formulation does not exceed 40 phr, each phr standing for parts by weight per 100 parts by weight of polyglycidylether.
Patent CA-2034121-A1 (CA)
Title: Underwater camera housing
Inventor: WILLIAMS GLEN
IPC: A45C11/38
Filed: 1991-01-14
Abstract: ABSTRACT OF THE DISCLOSURE         An underwater camera housing comprises two molded sections to which a front portal and a rear portal are secured to allow through the camera viewing.  The molded sections include integral hollow handles exterior to a sealed compartment which not only function as handles, but also serve to reinforce the housing and allow more suitable location of the clamping mechanism.  The walls of the housing on the top and bottom surface have a particular shape to resist the water pressure force and to increase the sealing pressure on a portion of the seal of the sealed compartment.
Patent CA-2034743-A1 (CA)
Title: Aircraft wheel
Inventor: RUSSELL DONALD L
IPC: B60B25/04
Filed: 1991-01-22
Abstract: An annular locking ring for use on an aircraft wheel that has a pair of separable wheel sections wherein the locking ring has a lobe section and a leg section. The cross-sectional shape of the leg section has a pair of spaced linear portions that are interconnected at their one ends while the cross-sectional shape of the lobe section has a curvilinear portion and a linearly extending portion that intersects one of the linear portions of the leg section. The curvilinear portion of the lobe section has one end that merges with the other one of the spaced linear portions. The extension of the one linear portion of the leg section makes an acute angle with the linear portion of the lobe portion.  Alternatively, the lobe section may have two spaced linear portions separated by the curvilinear portion with one of such linear portions merging with one linear portion of the leg section and with the other one of such linear portions of the lobe section intersecting the other linear portion of the leg section.
Patent CA-2037182-A1 (CA)
Title: Impact resistant polycarbonate moulding compositions
Inventor: LEITZ EDGAR
IPC: C08L51/04
Filed: 1991-02-27
Abstract: IMPACT RESISTANT POLYCARBONATE MOLDING COMPOSITIONS             ABSTRACT OF THE DISCLOSURE A thermoplastic molding composition comprising (i) a polycarbonate based on a substituted dihydroxydiphenyl cycloalkane, (ii) a graft polymer, and (iii) a hydrogenated nitrile rubber or a copolymer of ethylene/vinyl acetate, is disclosed.  The composition which is characterized by its toughness at low temperatures, high dimensional stability under heat and high resistance to organic solvents is suitable for the manufacture of molded articles, in particular, external parts of motor vehicles.     LeA 27,476
Patent CA-2038617-A1 (CA)
Title: Removable filter fluid flow shutoff apparatus
Inventor: LYON LELAND H
IPC: B25D17/00
Filed: 1991-03-19
Abstract: ABSTRACT OF THE DISCLOSURE        A filter apparatus for a percussion device powered by fluid pressure includes a percussion device housing having a fluid inlet and a fluid outlet.  A valve is displaced between an open and a closed position.  A filter recess is formed within the housing.  A filter is inserted within the filter recess for moving the valve from the closed to the open position, thereby permitting fluid pressure to be supplied from the inlet to the outlet.
Patent CA-2038869-A1 (CA)
Inventor: MITSUTAKE HIDEAKI
IPC: G02F1/01
Filed: 1991-03-22
Abstract: An optical modulation device is constituted by a polarizer; a first film forming a first state and a second state depending on an electric field applied thereto, the first state causing birefringence and the second state not causing birefringence respectively of polarized light from the polarizer, the first film having a thickness set for functioning as a halfwave plate in its first state; and a second film not causing birefringence of light having passed through the second state of the first film but causing birefringence of light having passed through the first state of the first film, the second film having a thickness set for functioning as quarter wave plate or a halfwave plate when the first film is set in its first state.  The light from the second film is caused to enter the second film again through a reflection means or a third film selectively forming a first state causing birefringence of light which has caused birefringence and passed through the second film or a second state not causing birefringence of light which has passed through the second film without causing birefringence.  The light thus modulated is then caused to enter an analyzer.  As a result, an optical modulation giving a large contrast is provided by using a material having a small birefringence effect for the first film or third film.
Patent CA-2039264-A1 (CA)
Title: Cyanobutylation of amines with 2-pentenenitrile
Inventor: HERKES FRANK E
IPC: C07B43/04
Filed: 1991-03-27
Abstract: TITLE Cyanobutylation of Amines with 2-Pentenenitrile ABSTRACT OF THE DISCLOSURE                    A process for the production of alkylaminonitriles by reacting 2-pentenenitrile and an alkylamine in the presence of 15 to 60% by weight water.
Patent CA-2041047-A1 (CA)
Inventor: SPARIAT JACQUES
IPC: B64G1/64
Filed: 1991-04-23
Abstract: TITLE OF THE INVENTION     Device for temporarily attaching an object to a support designed to fracture at a predetermined tensile load TEXT OF THE ABSTRACT       A device for temporarily attaching an object  (A, A') to a support (B) comprising a body (2) designed to be fixed to the support and including an annular end portion (3)  fixed to the object and  joined to the body by a coupling  (4)  characterised  in  that  the  coupling  (4) between the annular end portion  (3)  of the receptacle fixed to the object and the body is flexible and fragile, comprising  an  intermediate  ring  (40)  joined  to  the annular end area and to the body by respective pairs of flexible  axial  tangs  (41,  42,  43,  44)  on  respective diameters at 90° to each other, the tangs of each pair being identical.       (See figure 6)
Patent CA-2041318-A1 (CA)
Title: Rib joint structure for an umbrella
Inventor: HUANG SHENG-FU
IPC: A45B19/10
Filed: 1991-04-26
Abstract: RIB JOINT STRUCTURE FOR AN UMBRELLA          Abstract of the Disclosure An improved joint structure for an umbrella rib linkage, the rib linkage comprising an inner rib, an inner linking spoke and a middle rib all hingedly connected to a middle joint.  The inner rib is a U-shaped strut with its slot facing upward, and the outer end of the inner support rib is hingedly con-nected to the middle joint so it seats on top of the inner linking spoke, or against the pin by which the inner linking spoke is connected to the middle joint, to enhance rib linkage stability when the umbrella is erected.
Patent CA-2043017-A1 (CA)
Title: Shower closure
Inventor: REEVES ERIC W
IPC: E04B7/00
Filed: 1991-05-22
Abstract: ABSTRACT:           An improved closure for use in a space at the upper portion of a stall area for a bath, shower, spa or the like, to provide an humidity and heat barrier.  A foldable thin sheet of material is supported by a framework mounted in the upper portion of the stall area.  The framework is designed to be supported in the upper portion of the stall by urging against or securing to two opposing walls.  A highly flexible material, such as a thin vinyl sheet or a fabric sheet, is chosen for the foldable sheet.  The flexible sheet is supported by the framework in an inverted V-shaped arrangement.