baber/WOPTO huggingface dataset:
Patent MX-165327-B (MX)
Title: Mejoras en un sello compuesto
Inventor: BECK GERALD H
IPC: F16J15/32
Filed: 1986-11-12
Abstract: La presente invención se refiere a mejoras en un sello compuesto para disponerlo en torno a un elemento circular que tenga un eje central, caracterizadas en que el sello comprende: un elemento sellador anular, primario, que tiene una dureza de 60 a 90 en la escala Shore A; un elemento sellador anular, secundario, que tiene una dureza de 90 a 125 en la escala Shore A; el elemento secundario es de sección radial en forma de U definida por piernas espaciadas en sentido radial y que se extienden en sentido axial conectadas por la parte curva que se extiende en sentido radial; las piernas del elemento secundario se pueden acoplar con el elemento circular y con la pared de un elemento o cilindro de soporte; las piernas del elemento secundario tienen caras de extremo axiales cónicas, inclinadas en sentido axial y radial hacia la curvatura del mismo; el elemento primario tiene un par de pestañas espaciadas en sentido radial con superficies inclinadas en sentido axial y radial complementarias y yuxtapuestas con las caras de extremo del elemento secundario para impedir la extrusión del elemento primario más allá de las piernas del elemento secundario.
Patent MX-171176-B (MX)
Title: Boquilla adecuada para usarse con un transductor para formar gotitas de tinta
Inventor: SLISZ ROGERT T
IPC: B41J2/16
Filed: 1987-05-29
Abstract: La presente invención se refiere a boquilla adecuada para usarse con un transductor para formar gotitas de tinta que comprende: un miembro tubular que tiene un orificio en un extremo, el otro extremo adaptado para conectar una fuente de tinta que contiene solventes, caracterizada porque el miembro tubular está formado de sulfuro de polifenileno, un material que es subtancialmente impermeable a la tinta y que es acústicamente suave; por lo que cuando el transductor es unido al miembro tubular la energía turbadora del transductor sobre un rango de frecuencia aproximada de 10 KHz a 100KHZ es sustancialmente plana,   y la energía turbadora del mimo se transmite a la tinta dentro del miembro tubular sin amplificación subtancial, atenuación o creación de resonancia armónica de una frecuencia que caracteriza a la energía turbadora.
Patent MX-168373-B (MX)
Inventor: MAURICE JACQUES
IPC: C01B17/02
Filed: 1987-07-09
Abstract: PCT No. PCT/FR87/00268 Sec. 371 Date Mar. 9, 1988 Sec. 102(e) Date Mar. 9, 1988 PCT Filed Jul. 8, 1987 PCT Pub. No. WO88/00570 PCT Pub. Date Jan. 28, 1988.The invention is an improved catalytic process for removing H2S and sulfanes from liquid sulfur and a catalyst system for carrying out the process. The catalyst comprises a basic component and a surfactant component.
Patent NO-138252-B (NO)
Title: Lactoner for anvendelse ved fremstilling av prostaglandiner
Inventor: MAGERLEIN BARNEY JOHN
IPC: A61K31/5575
Filed: 1972-11-27
Abstract: Lactoner for anvendelse ved fremstilling av prostaglandiner.
Patent NO-147626-B (NO)
Title: Fremgangsmaate ved fremstilling av et medisinsk preparat med forsinket frigjoering av den terapeutisk aktive bestanddel
Inventor: RAGHUNATHAN YEGNASWAMI
IPC: A61K9/14
Filed: 1977-11-25
Abstract: Fremgangsmåte ved fremstilling av et medisinsk preparat med forsinket frigjøring av den terapeutisk aktive bestanddel.
Patent NO-143571-B (NO)
Title: Glassplate for anvendelse som side- eller bakvindu for motoate rkjoeretoey og fremgangsmaate for fremstilling av saadan pl
Inventor: GREENHALGH GEOFFREY
IPC: C03B27/044
Filed: 1978-06-21
Abstract: Glassplate for anvendelse som side-eller bakvindu for motorkjøretøy og fremgangsmåte for fremstilling av sådan plate.
Patent NO-158138-B (NO)
Inventor: BJERKE ODD
IPC: C08F2/22
Filed: 1980-12-03
Abstract: The present invention comprises a method of preparing vinyl chloride polymers or vinyl chloride copolymers suitable for the preparation of plastisols. The method can be used at polymerizations, wherein a pre-emulsion of a substance having a very low solubility in water, is caused to swell by the vinyl chloride monomer, whereafter the monomer emulsion abtained is subjected to polymerizing conditions. According to the invention the emulsion is stabilized, and, by polymerizing in the presence of an stabilizing latex, it is possible to avoid, that the obtained latex becomes instable. In this way it is possible to prepare polymers having a particle size and a particle size distribution giving a product with low viscosity at the preparation of plastisols.
Patent NO-170593-B (NO)
Inventor: GEERDES DIRK JACOBUS FREDERIK
IPC: C08G63/48
Filed: 1983-12-27
Abstract: This invention pertains to a process for coating wood or a wood fibres-containing substrate using an oxidatively drying coating composition based on an alkyd resin built up of an ethylenically unsaturated monocarboxylic acid, a saturated di- or polyvalent hydroxyl compound and a specific benzotriazole or benzophenone compound. The coating exhibits improved durability and ensures good protection of the substrate against the effects of ultraviolet radiation.
Patent NO-161230-B (NO)
Inventor: SUOMELA ARVO
IPC: E02D17/20
Filed: 1984-08-16
Abstract: 1. Element for preventing the running down of growth medium such as soil or turf on inclined surfaces, said element including a frame structure formed from side walls (1), the outer surfaces of the side walls being inclined with respect to the plaie of the frame structure, characterized in that the side walls (1) are hollow and open at their one edge and that the inner cavities of the side walls become wider towards the open edge of the side walls.
Patent NO-171637-B (NO)
Inventor: BUZAS ANDRE
IPC: C07D207/40
Filed: 1987-07-07
Abstract: Derivatives, of formula: 
<IMAGE>
 in which:
 R1, R2, R3 and R4 independently of each other denote a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group or the trifluoromethyl group;
 n is an integer in between 1 and 6 inclusive;
 R5 and R6 denote, one a hydrogen atom and the other a substituted or unsubstituted benzoyl group; or
 R5 and R6 form, with the nitrogen atom to which they are bonded, a substituted or unsubstituted 5- or 6-membered heterocyclic group chosen from the following groups: succinimidyl, 4-phenylsuccinimidyl, phthalimidyl, naphthalimidyl, phthalimidinyl, 3-hydroxyphthalimidinyl, 2-oxobenzimidazolinyl, 3-benzyl-2-oxobenzimidazolinyl, 1,2,3,4-tetrahydro-2,4-dioxoquinazolinyl, 3,4-dihydro-4-oxoquinazolinyl, 3,4-dihydro-4-oxo-2-methylquinazolinyl, 3,7-dihydro-1,3-dimethyl-2,6-dioxo-1H-purinyl, 3,7-dihydro-3,7-dimethyl-2,6-dioxo-1H-purinyl. The invention also relates to processes for obtaining the said derivatives and to pharmaceutical compositions containing them. The said derivatives exhibit an antihistaminic activity without any sedative component.
Patent NO-171600-B (NO)
Inventor: LETOFFE MICHEL
IPC: C08K5/57
Filed: 1988-06-22
Abstract: An organopolysiloxane composition comprising a base capable of curing by polycondensation reactions and a catalytically effective quantity of a tin catalyst which is the product of reaction of a tin salt with a  beta -dicarbonyl compound. 
<??>The organopolysiloxane composition may be formulated in one or in two packs and can be employed in particular for producing seals in the building industry.
Patent NO-179304-B (NO)
Inventor: CLAY ROBERT ALAN
IPC: B23P19/06
Filed: 1991-07-26
Abstract: PCT No. PCT/GB90/00113 Sec. 371 Date Jul. 26, 1991 Sec. 102(e) Date Jul. 26, 1991 PCT Filed Jan. 26, 1990 PCT Pub. No. WO90/08994 PCT Pub. Date Aug. 9, 1990.A system for controlling the operation of a motor being used for the rotational assembly or dis-assembly of two members, the system comprising means monitoring, and generating a digital or analogue signals representative of the state of the two members and means relaying the representative signal in a digital form to a first processor (6) means relaying the signal in an analogue form to a second processor (11); the first processor comprising a computer which in use, digitally analyses the representative signal and is so programmed as to generate a first control signal in response to the representative signal; the second processor comprising means converting the first control signal into analogue form and means comparing it with the analogue representative signal and generating second control signal representative of the difference between the first control signal and the representative signal; the second processor being so connected as to transmit the second control signal to the motor control means.
Patent NO-179927-B (NO)
Title: Dybdestyreanordning
Inventor: KUCHE HANS-WALTER
IPC: B63B21/66
Filed: 1994-05-13
Abstract: ybdestyreanordning for seismiske hydrofonkabler, omfattende en sentralenhet (10) innrettet til å monteres innskutt i hydrofonkabelen (11,12) i det vesentlige aksielt i flukt med hydrofonkabelen, et hus (20) som er dreibart omkring sentralenheten (10) og bærer i det minste en styrevinge (7A,B) som er vinkelstillbar om en tverrgående akse (7) innrettet til å ligge stort sett horisontalt i operativ stilling, og en elektrisk motor (6) til å bevirke vinkelinnstilling av styrevingen(e) (7A,B) om den tverrgående akse (). Motoren (6) er anordnet i sentralenheten (10) og er innrettet til å få sin strømtilførsel (11A) gjennom hydrofonkabelen (11,12). Styrevingen(e) (7A,B) er anordnet på huset (20) slik at den tverrgående akse (7) i operativ stilling forløper under sentralenheten (10). En overføringsmekanisme (6A,6B,8,1,3A,3,13,-13A,17A,17) for vinkelstillingen av styrevingen(e) (7A,B) ved hjelp av motoren (6), omfatter en sleide (3) som er forskyvbar i sentralenhetens aksielle retning og fortrinnsvis omklamrer sentralenheten (10).
Patent SE-331985-B (SE)
Inventor: MUELLER W
IPC: C07C203/04
Filed: 1966-03-04
Abstract: The invention comprises nitrates of the formula <FORM:1078045/C2/1> wherein R1 is C4- 12 straight chain alkyl and X is hydrogen or straight-chain alkyl group and a more general method of preparation of compounds of the formula <FORM:1078045/C2/2> where R is a straight chain alkyl group of at least 3 carbon atoms comprising introducing a mixture of one or more straight chain a -olefins, having at least 5 carbon atoms, and molecular oxygen into liquid dinitrogen tetroxide at - 10 DEG  to +40 DEG  C., removing excess nitrous fumes at a temperature not exceeding 60 DEG  C. and, if desired, esterifying the carboxyl group in a known manner.  The oxygen and dinitrogen tetraoxide are used in at least equimolar amounts, based on olefin. The reaction may be effected in the presence of an oxidation catalyst, e.g. SeO2 or V2O5.  The starting olefin may be used in the form of a commercial mixture containing saturated hydrocarbons which act as a diluent.  The excess nitrous fumes are conveniently removed from the product using a thin film evaporator.  Examples relate to the nitrate esters of methyl-a -hydroxyvalerate, methyl - a  - hydroxyoenanthate, a -hydroxycaprylic acid, a -hydroxycapric acid, a -hydroxylauric acid, a -hydroxymyristic acid, a -hydroxypelargonic acid, a -hydroxystearic acid, a -hydroxyarachidic acid and a -hydroxy-nonadecane carboxylic acid.
Patent SE-392910-B (SE)
Inventor: FREAKE R
IPC: C12M1/16
Filed: 1972-03-15
Abstract: 1365001 Micro-biological testing MILES LABORATORIES Inc 25 Feb 1972 [16 March 1971] 8833/72 Heading C6F [Also in Division G1] A test device for the differential or semiquantitative microbial analysis of water, milk or urine samples comprises a sterile bilulous matrix 11, Figs. 1 and 2, impregnated with nutrient medium including a colour indicator responsive to micro-organism growth e.g. triphenyl tetrazolium chloride, and 0À1-5À0 per cent by weight of the formulation of a water soluble suspending agent capable of forming a viscous colloidal suspension with an aqueous liquid when the impregnated matrix is rehydrated. The bibulous material has a known constant absorption capacity and the suspending agent is sodium alginate, polyexyethylene sorbitan mono-olente, agar, carraheen, polypeptide, linear polysaccharide or polysaccharide gum. The matrix is bonded to a holder 12 of polyethylene terephthalate through a thin layer of polyethylene 14 or double-faced adhesive tape. The matrix and attached holder are held in a polyethylene envelope 13 provided with a conventional interlocking seal lip 22. The Examples disclose nutrient media, colour indicators and suspending agents, and microbiological tests using matrices containing them.
Patent SE-306318-B (SE)
Inventor: CALLAHAN J
IPC: C07C51/25
Filed: 1963-06-10
Abstract: Olefins are oxidized to aldehydes or in the presence of ammonia to unsaturated nitriles using supported or unsupported antimony/uranium catalysts.  If desired both nitriles and aldehydes may be produced simultaneously. The reactants used may comprise oxygen and an olefin having only 3 carbon atoms in a straight chain e.g. propylene, isobutylene or mixtures thereof. The olefins may be in admixture with paraffins e.g. ethane, propane, butane and pentane.  A propylene-propane-oxygen mixture may constitute the feed gas. Examples are given which describe the preparation of achelein, acrylonitrile methacrylonitrile methachelein and methacrylic acid as main products and acetonitrile as by-product.  Specifications 864,666, 867,438 and 876,446 are referred to.ALSO:The oxidative dehydrogenation of olefins to diolefins and aromatics is effected in the presence of supported or unsupported Sb/U catalysts.  Specified olefins which may be dehydrogenated are butene-1, butene-2 pentenes 1 and 2, 2 methyl pentene-1, 3 methyl butene 1, 2 methyl butene 2, hexene-1, hexene-2, 4 methyl pentene 1, 3 : 4 dimethyl-pentene-1, 4-methyl pentene 2, heptene-1, octene-1, cyclopentene, cyclohexene, 3 methyl cyclohexene, and cycloheptene.  The amount of oxygen used should be from 0.3-3.0 mols. per mol. of olefin.  The gasous feed may additionally contain one or more paraffinic or naphthenic hydrocarbon or steam, carbon dioxide or nitrogen. Examples 17, 18 and 19 describe the conversion of butenes to butadiene. Specifications 864,666, 867,438 and 876,446 are referred to.ALSO:An oxidation catalyst comprises oxides of Sb and U such that the metals atomic ratio is within the range 1 : 50-99 : 1.  The catalyst may be used per se or supported on silica, alumina, zirconia, "Alundum" (Registered Trade Mark), silicon carbide, alumina-silica or on stable phosphates, silicates, aluminates, borates and carbonates.  The catalyst may be made by blending oxides of metals, dissolving metals in nitric acid or hydrolysing salts of metals.  Regeneration may be effected by heating the catalyst in air.  Examples are given.  Specifications 864,666, 867,438 and 876,446 are referred to.
Patent SE-336162-B (SE)
Inventor: PAYNE I
IPC: H02P7/28
Filed: 1966-07-12
Abstract: 1,136,253. Magnetic amplifiers. LANSING BAGNALL Ltd. 12 July, 1966 [14 July, 1965], No. 29898/65. Heading H3B, [Also in Divisions G3, H1 and H2] A transductor, for applying a variable proportion of the pulses from a multi-vibrator and shaping circuit to the firing circuit of a thyristor in circuit with an electric motor, comprises cores 12, 13 separated by air gaps 16, 17 wich a reactance winding 18 around the core 12. Around the core 13 there is a single-turn winding 19 carrying the motor current. In the main air gap 14 there is a movable permanent magnet 22 coupled to a control pedal for the motor. Initially the transductor is fully saturated by the control magnet, thus inhibiting pulses to the thyristor, until displacement of the magnet from the position between poles 15 reduces the saturation and increases the pulse repetition rate. The transductor also tends to be saturated by the winding 19, to prevent the supply of "on" pulses until the motor current decreases to a safe value. The winding 18 is connected across the base and emitter of a transistor and is energized by pulses from the shaping circuit, the arrangement being such that the transistor is cut-off to prevent the application of firing pulses to the thyristor when the impedance of the winding 18 is low due to saturation.
Patent YU-45624-B (YU)
Title: Oljno hlajen asinhronski motor posebno za hermetične kompresorje hladilnega sredstva
Inventor: GUENTHER E
IPC: H02K9/19
Filed: 1984-06-08
Abstract: OLJNO HLAJEN ASINHRONSKI MOTOR POSEBNO ZA HERMETIČNE KOMPRESORJE HLADILNEGA SREDSTVA , ki sestoji iz rotorja 4, in statorja 3, pri čemer ima rotor kratkostično kletko z zgornjim in spodnjim kratkostičnim obročem, označen s tem, da se nahajajo na zgornjem kratkostičnem obroču rotorja, 4, z zgornjim kratkostičnim obročem čvrsto povezan, valjasti ali konično navzgor odpirajoč se element (7) z radialno nameščenimi izrezi (8) v obliki sinusa za stalno porazdeljevanje toka oljne mase preko celotnega obsega celotne višine gornje glave navitja (10) in na kapsulo (12), da presega valjast ali koničen element (7) gornjo glavo navitja (10) za najmanj 1 mm in ustreza naraščanje sinusne funkcije po obratišču pri tem razmerju.
Patent YU-43683-B (YU)
Title: Process for producing adhesive material using resorcine and filler
Inventor: KOEHNER G
IPC: C08J5/10
Filed: 1985-07-17
Abstract: There is prepared a homogeneous mixture of 95 to 30% carbon black and 5 to 70% resorcinol. The resorcinol preferably either has an average particle size of 0.01 to 0.4 mm or is broken down to that size. The product is employed in rubber mixture to improve the adhesion of rubber vulcanizates to metal, textile fibers, glass fibers, or their structures.
Patent YU-41742-B (YU)
Title: Process for obtaining mano-(2-ammonium-2-hydroxy methyl-1,3-propane-dio)(2cr-cis)(3-methyloxyranyl) phosphonate
Inventor: CHIARIND D
IPC: A61K31/685
Filed: 1980-10-17
Abstract: Mono (2-ammonium-2-hydroxymethyl-1,3-propanediol)(2R-cis)-(3-methyloxiranyl) phosphonate endowed with therapeutic activity as broad-spectrum antibiotic, as well as a method for preparing same from bis(2-ammonium-2-hydroxymethyl-1,3-propanediol)2R-cis)- (3-methyloxiranyl)phosphonate and a sulphonic acid. 
<??>Pharmaceutical compositions containing the novel mono(2-ammonium-2-hydroxymethyl- 1,3-propanediol)(2R-cis)-(3-methyloxiranyl)phosphonate are also disclosed.
Patent RS-50415-B (RS)
Inventor: KLINGLER OTMAR
IPC: C07K5/065
Filed: 2000-05-27
Abstract: Jedinjenje formule (I) gde: r je 0, 1, 2 ili 3; s je 0, 1,2, 3 ili 4; t je 0, 1 ili 2; R1 je odabran iz serije koju čine vodonik, R11-CO- i R12-SO2-; R11 je odabran iz serija koje čine vodonik, (C1-C8)-alkil, (C6-C14)-aril, (C6-C14)-aril(C1-C4)-alkil-, Het-, Het-(C1-C4)-alkil-, (C1C8)-alkiloksi-, (C6-C14)-ariloksi-, (C6-C14)-aril-(C1C4)-alkiloksi-, amino, (C1-C8)-alkilamino-, (C6-C14)-arilamino- i (C8-C14)-aril-(C1-C4)-alkilamino-, gde su sve ove grupe nesupstituisane ili supstituisane jednim ili više identienih ili različitih supstituenata R40 ; R12 je odabran iz serije koju čine (C1-C8)-alkil, (C6-C14)-aril, (C6-C14)-aril-(C1-C4)-alkil-, Het-, Het-(C1-C4)-alkil-, (di((C1-C8)-alkil)amino- i di((C6-C14)-aril-(C1-C4)-alkil)amino-, gde su sve ove grupe nesupstituisane ili supstituisane jednim ili više identičnih ili različitiih supstituenata R40; R2 je vodonik, R21(R22)CH-, R23-Het-(CH2)k-, R23(R24)N-(CH2)m.D-(CH2)n- ili R25(R26)-N-CO-(CH2)p-D-(CH2)q-, gde D je dvovalentni ostatak -C(R31)(R32)-, dvovalentni (C6-C14)-arilen ostatak ili dvovalentni ostatak izveden iz aromatične grupe Het koja sadrži 5 do 10 atoma prstena od kojih su 1, 2, 3 ili 4 identični ili različiti heteroatomi prstena odabrani iz serije koju čine azot, kiseonik i sumpor, a brojevi k, m, n, p i q koji su nezavisni jedan od drugog i mogu da budu identični ili različiti i to: 0, 1, 2, 3, 4 ili 5, pod uslovom da u slučaju kada D je -C(R31 )(R32)- zbir m+n ne može da bude 0 i zbir p+q ne može da bude 0; R21 i R22 koji su nezavisni jedan od drugog i mogu da budu identični ili različiti, odabrani su iz serije koju čine: vodonik, (C1-C12)- alkil, (C6-C14)-aril, ((C6-C14)-aril- (C1-C4)- alkil-, Het- i Het- (C1-C4)- alkil-, gde su sve ove grupe nesupstituisane ili supstituisane jednim ili više identičnih ili različitih supstituenata iz serije koju čine: R40, (C1-C8)- alkilamino-, di (C1C8)-alkilamino-, (C6-C14)-aril- (C1-C4)-alkilamino-, (C6-C14)- arilamino-, aminokarbonil- i aminokarbonil- (C1-C8)-alkil, ili R21 i R22 zajedno sa atomom ugljenika za koji su oni vezani formiraju zasićeni ili nezasićeni 3-člani do 8-člani karbociklični prsten koji može da bude kondenzovan u jedan ili dva prstenasta sistema koji su heteroaromatični prstenovi a koji sadrže 5 do 10 atoma u prstenu od kojih su 1, 2 ili 3, identični ili različiti heteroatomi odabrani iz serije koju čine azot, kiseonik i sumpor, i/ili (C6-C10)- karbociklični aromatični prstenovi, gde rezultujuća grupa R21 (R22 )CH-je nesupstituisana ili supstituisana jednim ili više identičnih ili različitih supstituenata iz nizova koji sadrze R40 , (C1-C8)- alkilamino-, di-(C1-C8)- alkil-amino-, (C6-C14)- aril- (C1C4)-alkilamino-, (C6-C14)- arilamino-, amin
Patent ZA-805948-B (ZA)
Title: Circuit arrangement for an earth fault current circuit breaker
Inventor: HARR D
IPC: H01H47/18
Filed: 1980-09-25
Abstract: 1. Earth fault current circuit breaker, the core of the core balance transformer (4) of which is premagnetised by a quiescent current derived from the system to be monitored by way of a feed circuit (8), wherein a variation of the magnetic flux in the core due to a fault current so changes the electrical resistance of the tripping circuit (9) that there can flow therein a current causing the tripping relay (3) to operate, characterised in that provision is made in the feed circuit (8) or in the tripping circuit (9) for suppressing the first half-cycle of the premagnetising current after restoration of the mains supply.
Patent ZA-806385-B (ZA)
Title: An arrangement for monitoring the degree of compaction of ground or other material
Inventor: BLANCKE U
IPC: E02D3/026
Filed: 1980-10-16
Abstract: In apparatus for monitoring the degree of compaction achieved by a compacting device including at least one vibrating compacting tool which device is mounted on a vehicle arranged to travel back and forth over a surface to be compacted, the apparatus including a system for detecting the value of an operating parameter which has a known relationship to the effective power of the vibrating compacting tool during each pass of the vehicle over the surface and which is representative of the degree of compaction achieved, there are further provided a representation storage system connected to the detecting system for separately storing representations of the detected values associated with each direction of travel of the vehicle, and a difference forming unit connected to the storage system for providing a representation of the difference between detected values associated with successive passes of the vehicle in the same direction.
Patent ZA-839697-B (ZA)
Title: Ester-alcohol frothers for froth flotation of coal
Inventor: KEYS ROBERT OTIS
IPC: B03D1/008
Filed: 1983-12-29
Abstract: Disclosed is an improved process wherein coal particles are beneficiated by froth flotation under coal froth flotation conditions to separate the desired coal particles from remaining unwanted ash and like gangue material. The improvement of the present invention comprises conducting the froth flotation in the presence of an ester-alcohol frothing agent. The preferred ester-alcohol frothing agents are reaction products of C<sub>1</sub>-C<sub>10</sub> mono-basic carboxylic acids and diols wherein the total number of carbon atoms range from about 6-19 and monocarboxylic acid esters of polyoxyalkylene glycols which can contain up to 25-30 carbon atoms.
Patent ZA-873601-B (ZA)
Title: Oxygen barrier film
IPC: B32B27/32
Filed: 1987-05-19
Abstract: A coextruded multiple layer oriented film comprises a core layer comprising an ethylene vinyl alcohol copolymer, two intermediate adhesive layers, and two outer layers comprising a polymeric material selected from the group consisting of ethylene butyl acrylate copolymer, and blends comprising at least 10% of said ethylene butyl acrylate copolymer blended with ethylene alpha-olefin copolymers. A preferred embodiment of the multilayer film exhibits high oxygen barrier especially useful in food packaging applications.