Adding Nonreactive Material To Chemically Modified Solid Polymer Patents (Class 524/572)
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Patent number: 5149732Abstract: Rubber compositions are disclosed for integral attachment of polymeric and metallic materials. Improved bondability is attributed to the use of a selected base rubber blended with a selected class of inorganic or organic fillers, silane compounds and vulcanizing agents such that the finished composition is provided with a specified range of Mooney viscosities. Also disclosed is a method of hose-metal fitting connection by the application of the composition. Gas- and oil-impermeability characteristics are greatly enhanced.Type: GrantFiled: March 6, 1990Date of Patent: September 22, 1992Assignee: The Yokohama Rubber Co., Ltd.Inventors: Shigeru Igarashi, Osamu Ozawa, Tetsu Kitami
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Patent number: 5130355Abstract: A haloalkoxylated polybutadiene polymer and a composition containing the polymer which is suitable for use in a flat sheet material such as a roofing membrane is disclosed. The polymer has a superior filler capacity, excellent flame resistivity and acceptable heat aged tensile properties. The composition, which includes at least one polymer of the present invention and from about 5 to about 160 parts by weight of a filler material per 100 parts polymer, is self-adhering without the use of an adhesive and is heat seamable to produce seams which are resistant to temperatures as high as 100.degree. C.Type: GrantFiled: August 21, 1991Date of Patent: July 14, 1992Assignee: Bridgestone CorporationInventors: William L. Hergenrother, James A. Davis, Daniel R. McGillvary, Joseph K. Valaitis
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Patent number: 5115006Abstract: A rubber composition capable of giving a vulcanized rubber having improved rebound and elongation at break. The composition consists essentially of(1) 100 parts by weight of a rubber component composed of (a) 10 to 100% by weight of a modified conjugated diene polymer obtained by reacting a conjugated diene polymer having an alkali metal and/or an alkaline earth metal bonded thereto with a compound containing the ##STR1## bond in which M represents an oxygen or sulfur atom in the molecule, said modified conjugated diene polymer consisting essentially of 50 to 100% by weight of at least one C.sub.4 -C.sub.12 conjugated diene monomer and 0 to 50% by weight of an aromatic vinyl monomer, the amount of said compound bonded being at least 0.Type: GrantFiled: January 18, 1991Date of Patent: May 19, 1992Assignee: Nippon Zeon Co., Ltd.Inventors: Hiroyuki Watanabe, Kohkichi Noguchi, Shuichi Akita, Kumiko Kohtaki
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Patent number: 5070131Abstract: A gear oil composition is provided, the composition comprising a hydrogenated star conjugated diolefin polymer having arms with weight average molecular weights between about 3,000 and about 15,000. Such star polymers are effective as viscosity index improvers, and yet are sufficiently shear stable for service in gear oil lubricants.Type: GrantFiled: September 28, 1990Date of Patent: December 3, 1991Assignee: Shell Oil CompanyInventors: Robert B. Rhodes, Rudolf J. Eckert, Donald E. Loeffler
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Patent number: 5030695Abstract: Ziegler-Natta catalyzed polymer chains are end capped with at least one functional group-containing unit which is otherwise essentially absent from said polymer chain. The chains can be grafted to form graft copolymers and star copolymers. The compositions are useful as oil additives and in general purpose elastomer as well as thermoplastic polymer compositions.Type: GrantFiled: September 12, 1988Date of Patent: July 9, 1991Assignee: Exxon Research & Engineering CompanyInventors: Charles Cozewith, Shiaw Ju, Gary W. Verstrate
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Patent number: 5013785Abstract: In the present invention, a polymer having a number average molecular weight (Mn) of from 200 to 40,000 and a glass transition point of from -75.degree. C. to +10.degree. C. which is obtained by the cationic polymerization of a branched alpha-olenin is used as a tackifier (a tacky producer) for a hot melt adhesive or a pressure-sensitive adhesive. An adhesive composition containing the polymer described above as a tackifier has excellent heat resistance, hue, weather resistance, and the like and has such excellent characteristics that its odor is weak.Type: GrantFiled: August 8, 1988Date of Patent: May 7, 1991Assignee: Mitsui Petrochemical Industries, Ltd.Inventor: Kinya Mizui
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Patent number: 4873290Abstract: There is disclosed an improved method for open steam curing of mineral-loaded elastomers. It has been discovered that use of a vulcanization agent comprising a mixture of an alkyl phenol disulfide and a guanidine compound provides a synergistic curing system that is superior over the use of either component alone. The improved curing system of the present invention is particularly suited for the open steam curing of mineral-loaded chlorobutyl compounds. The cure system may be used in addition to zinc oxide and results in excellent states of cure as determined by tensile elongation and hardness measurements.Type: GrantFiled: August 11, 1988Date of Patent: October 10, 1989Assignee: The Goodyear Tire & Rubber CompanyInventors: Terry F. Allen, Robert C. Schisler
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Patent number: 4835209Abstract: The present invention relates to a rubber-like polybutadiene or a rubber-like butadiene-styrene copolymer suited for use in tire treads which are obtained by polymerization of the monomer(s) in the presence of an organolithium catalyst, followed by reacting a carbodiimide with the reactant product thereof so as to subject it to reaction at its living point, and if necessary, further reacting the product thus obtained with a trifunctional or higher-order coupling agent. The invention further relates to a process for the production thereof, and a rubber composition containing more than a definite amount of said polymer.Type: GrantFiled: March 16, 1987Date of Patent: May 30, 1989Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Yuichi Kitagawa, Haruo Yamada, Akira Saito
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Patent number: 4745150Abstract: A tire tread rubber composition exhibiting outstanding dynamic behavior and characterized in that the composition comprises as a rubber component at least 30 wt. % of an elastic styrene-butadiene copolymer prepared by solution polymerization with use of a lithium-base catalyst, the copolymer being higher than -60.degree. C. in glass transition temperature (T g) and at least 40.degree. C. in the peak mesial width of tan .delta. determined from the temperature range between the two points of intersection of the curve of tan .delta. with the line of tan .delta.=1/2a wherein a is the peak value of tan .delta. determined from a temperature-tan .delta. dispersion curve.Type: GrantFiled: December 15, 1986Date of Patent: May 17, 1988Assignee: Toyo Tire & Rubber Company LimitedInventors: Eiji Ida, Riichiro Ohara
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Patent number: 4731143Abstract: A thin tough glossy surface may be applied to a flexible substrate in a one step process comprising: applying an aqueous thin film of a compound of a polymer to an endless carrier belt made of a material having a low adhesion to said polymer, contacting the flexible substrate and coated carrier belt and keeping them together while they pass around a hot drum laminator at a temperature of from about 100.degree. to about 150.degree. C.The process is suitable for applying impermeable surfaces to non wovens, and foam backed carpet.Type: GrantFiled: June 17, 1986Date of Patent: March 15, 1988Assignee: Polysar Financial Services, S.A.Inventor: Jimmy D. Cross
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Patent number: 4728692Abstract: A thermoplastic elastomer composition and process comprising a crystalline polyolefin, halogenated butyl rubber, olefin copolymer rubber, polyolefin modified with, e.g., maleic anhydride, and, optionally nitrile rubber, wherein the halogenated butyl rubber is at least partially crosslinked using a metal oxide and/or chloride, e.g., zinc oxide. Crosslinking is achieved under dynamic mixing conditions and the resulting composition has superior strength, performance and processing properties. Furthermore, use of nitrile rubber imparts improved oil resistance to the composition.Type: GrantFiled: February 18, 1987Date of Patent: March 1, 1988Inventors: Eiji Sezaki, Takashi Mikami, Tsuyoshi Kanai, Toshio Yoshida, Kikuo Tanaka, Masaaki Saito
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Patent number: 4722976Abstract: Composition for preparing a polymer concrete, a method of protecting or reconditioning surfaces by treatment with the composition, the protected or reconditioned surfaces thus-treated, and multi-package systems for bringing the components of the composition to an application site, wherein the composition comprises a substantially non-aqueous slurry of (1) an aggregate material and (2) a monomer binder system effective to bind the aggregate, upon curing, into a polymer concrete, the binder system comprising (a) a liquid comonomer component, (b) a solid, thermoplastic macromonomer component dissolved in the comonomer and comprising a linear polymer terminated at one or both ends with a polymerizable end group, and (c) a polymerization catalyst.Type: GrantFiled: November 22, 1985Date of Patent: February 2, 1988Assignee: Pony Industries, Inc.Inventor: Gary W. Ceska
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Patent number: 4704427Abstract: A method for improving the physical properties of a rubber having --C(CH.sub.3).dbd.C-- type unsaturated bonds, characterized by subjecting said rubber to two reactions consisting of a modification reaction by Lewis acid and a carboxylation reaction in any desired order.Type: GrantFiled: March 27, 1986Date of Patent: November 3, 1987Assignee: Nippon Zeon Co., Ltd.Inventors: Shizuo Kitahara, Fujito Nakakawaji
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Patent number: 4703091Abstract: An improved halogenated butyl rubber wherein the polymer has a conjugated diene content of less than 0.25 mole % and a halogen content of at least 0.6 wt. %; at least 20 mole % of the halogen being in a primary allylic configuration.Type: GrantFiled: November 21, 1986Date of Patent: October 27, 1987Assignee: Exxon Research & Engineering Co.Inventors: Irwin J. Gardner, James V. Fusco, Neil F. Newman, Ronald C. Kowalski, William M. Davis, Francis P. Baldwin
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Patent number: 4677153Abstract: A method for modifying a rubber having unsaturated bonds, characterized by reacting said rubber with (a) an organic compound (I) having a group represented by the formula --CH.dbd.N-- and (b) an organic acid halide (II) having a group represented by the formula --COX (X is a halogen atom), in the place of a Lewis acid.Type: GrantFiled: March 25, 1986Date of Patent: June 30, 1987Assignee: Nippon Zeon Co., Ltd.Inventors: Shizuo Kitahara, Yoshitsugu Hirokawa, Toshihiro Fujii
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Patent number: 4668733Abstract: A pour point depressant composition and a method for its use. The pour point depressant is a predominantly butadiene polymer epoxidized and then ring-opened with a C.sub.12-24 carboxylic acid, or ring-opened with an alcohol followed by esterification.Type: GrantFiled: March 27, 1986Date of Patent: May 26, 1987Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Hermann Anzinger, Herbert Fischer, Claus-Peter Herold, Wolfgang Zoellner
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Patent number: 4663377Abstract: The present invention is directed to a polyisocyanate preparation dispersible in water and having an average NCO functionality of about 2.0 to 3.5 which contains(a) an aliphatic polyisocyanate or a mixture of aliphatic polyisocyanates; and(b) a quantity of an emulsifier sufficient to ensure the dispersibility of the polyisocyanates.The present invention is also directed to the use of this polyisocyanate preparation as an additive for aqueous adhesives based on polymers dispersed in water.Type: GrantFiled: May 29, 1986Date of Patent: May 5, 1987Assignee: Bayer AktiengesellschaftInventors: Rudolf Hombach, Helmut Reiff, Manfred Dollhausen
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Patent number: 4652600Abstract: A method for controlling the viscosity of organic liquids, said organic liquid having a solubility parameter of from about 6 to about 10.5, which comprises incorporating into said organic liquid a minor amount of a polymer which is a sulfomaleic anhydride adduct or sulfoester maleic anhydride adduct with an unsaturated hydrocarbon polymer, said adduct being hydrolyzed and neutralized.Type: GrantFiled: December 16, 1985Date of Patent: March 24, 1987Assignee: Exxon Research and Engineering CompanyInventors: Warren A. Thaler, Stanley J. Brois, Francis N. Ferrara
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Patent number: 4636550Abstract: The invention is directed to vulcanizable halogen rubber mixtures which contain 2-sec.amino-4,6-dimercapto-s-triazine, silica, and optionally carbon black.Type: GrantFiled: July 17, 1985Date of Patent: January 13, 1987Assignee: Degussa AGInventors: Siegfried Wolff, Werner Schwarze, Heinz Grewatta
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Patent number: 4599375Abstract: Polymeric compositions endowed with high flame self-extinguishing properties, comprising a polymer selected from amongst olefinic polymers, polystyrene, polybutylene terephthalate, SAN and ABS copolymers, and also, for 100 parts of composition:(a) 20-50 parts of piperazine acid pyrophosphate;(b) 0-3 parts of at least a compound selected from TiO.sub.2, SiO.sub.2, silicic acid, in powder having particle size .ltoreq.0.1 micron;(c) 0-35 parts of at least a compound selected from ammonium polyphosphate, melamine, melamine phosphate and pyrophosphate, polycarboxypiperazine, ethylene urea/formaldehyde condensates, as a substitute for an equal weight of compound (a), and in such amount that the composition still contains at least 5 parts of such compound (a).Type: GrantFiled: May 16, 1984Date of Patent: July 8, 1986Assignee: Montedison S.p.A.Inventors: Ferruccio Berte', Franco Marciandi, Marco Binaghi
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Patent number: 4537932Abstract: Solution polymerized rubbery conjugated diene homopolymers and copolymers with monovinylarenes are terminated with a hydrocarbyl phosphite or thiophosphite. The phosphite terminated polymers, particularly medium-vinyl polybutadiene, can be incorporated in rubber/carbon black/oil tread stock compounds employing up to 65 parts of rubber per 100 parts of polymer and up to 30 parts of oil per 100 parts of polymer for higher resilience, lower hysteresis, and generally higher tensile strength after vulcanization.Type: GrantFiled: July 30, 1984Date of Patent: August 27, 1985Assignee: Phillips Petroleum CompanyInventors: Carl A. Uraneck, John E. Burleigh
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Patent number: 4525523Abstract: There is proposed a negative-working photoresist coating composition of an improved resolution, which comprises a cyclized polyisoprene having a weight-average molecular weight of 10,000 to 100,000 and a molecular weight distribution of not more than 1.9, an organic solvent of the cyclized polyisoprene, and a bisazido compound as a crosslinking agent.Type: GrantFiled: August 26, 1983Date of Patent: June 25, 1985Assignees: Kanto Chemical Co., Inc., Tokyo Shibaura Denki Kabushiki KaishaInventors: Hatsuo Nakamura, Tiharu Kato, Toshio Yonezawa, Shigeo Koguchi, Kiyoto Mori, Masahiko Igarashi
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Patent number: 4524174Abstract: The resistance of structural elastomer products, such as bearing blocks, to compressive forces is reduced by incorporating therein a plurality of small, separate, reinforcing elements of relatively hard material. Such materials include crushed rock, concrete, glass or certain slags and small metal pieces. The reinforcing elements are congregated in an interior section or core which is covered by a marginal section substantially free from reinforcing elements.Type: GrantFiled: May 29, 1984Date of Patent: June 18, 1985Assignee: Watson Bowman AssociatesInventor: Stewart C. Watson
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Patent number: 4513110Abstract: Treatment of diene rubber with a diketo compound, in which the keto groups are part of a six-carbon hydrocarbon ring containing carbon-to-carbon unsaturation, or a tautomer of the compound, is performed at temperatures above 130.degree. C. Rubber compositions treated in this manner exhibit increased green strength, decreased plasticity, and, when vulcanized, decreased hysteresis.Type: GrantFiled: June 9, 1983Date of Patent: April 23, 1985Assignee: Monsanto CompanyInventor: Charles P. Rader
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Patent number: 4503176Abstract: A cutback of a mixture of bitumen and rubber is prepared by treating a mixture of bitumen and rubber with a peroxide at 100.degree.-240.degree. C. and adding a volatile solvent. The obtained cutback can easily be sprayed on roads and shows a good retention for chippings.Type: GrantFiled: January 3, 1983Date of Patent: March 5, 1985Assignee: Shell Oil CompanyInventors: Peter L. Barlow, Kenneth M. Riches
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Patent number: 4499228Abstract: A rubber composition having an improved crack growth resistance is disclosed, which contains 1-40 wt % of granular bodies having an average particle diameter of 5-500 .mu.m, which contain 2-40 wt % of micro short fibers having an average diameter of not more than 1 .mu.m, an average length of 1-30 .mu.m and an aspect ratio of not less than 8 and orientated in uniaxial or biaxial direction, and is random in the orientation axis of the micro short fiber between the granular bodies.Type: GrantFiled: June 23, 1983Date of Patent: February 12, 1985Assignee: Bridgestone Tire Company LimitedInventors: Masaki Ogawa, Yasushi Hirata, Akira Tsuchikura
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Patent number: 4485833Abstract: Solution polymerized rubbery conjugated diene homopolymers and copolymers with monovinylarenes are terminated with a hydrocarbyl phosphite or thiophosphite. The phosphite terminated polymers, particularly medium-vinyl polybutadiene, can be incorporated in rubber/carbon black/oil tread stock compounds employing up to 65 parts of rubber per 100 parts of polymer and up to 30 parts of oil per 100 parts of polymer for higher resilience, lower hysteresis, and generally higher tensile strength after vulcanization.Type: GrantFiled: June 3, 1983Date of Patent: December 4, 1984Assignee: Phillips Petroleum CompanyInventors: Carl A. Uraneck, John E. Burleigh
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Patent number: 4486562Abstract: A process is provided for preparing a vulcanized carbon black-reinforced chloro- or bromobutyl rubber film comprising admixing a polyfunctional amine vulcanization system with a carbon black-reinforced chloro- or bromobutyl rubber latex containing one or more selected emulsifiers, forming a film from the resulting mixture, drying said film and heating the dried film to provide the vulcanized film. The process may be used in the manufacture of coatings, dipped goods and chemical resistant impermeable treated fabrics.Type: GrantFiled: March 16, 1984Date of Patent: December 4, 1984Assignee: Polysar LimitedInventors: Erhardt Fischer, Douglas C. Edwards
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Patent number: 4481323Abstract: This invention provides a composition of matter composed of a substantially uniform mixture of a thermoplastic elastomeric hydrocarbon black copolymer and 0.1 to 12 percent by weight of the composition of a polysiloxane. The composition exhibits improved surface, elasticity, and tensile strength characteristics as well as superior processibility. The block copolymer may comprise blocks of styrene-ethylene-butylene-styrene in which the styrene blocks have a molecular weight of 5,000 to 40,000 and the ethylene-butylene block has a molecular weight of 20,000 to 500,000. Mineral oil and polypropylene are preferably dispersed in the composition. Combining the copolymer with the polysiloxane typically occurs under the influence of a pressure of 1,500 to 2,500 p.s.i. or above, such as provided by extrusion blending. The resulting elastomeric composition may be extruded into sheets as thin as 0.015, 0.010, or even 0.005 inch, which a puller may thin even further.Type: GrantFiled: May 21, 1981Date of Patent: November 6, 1984Assignee: Medical Research Associates, Ltd. #2Inventor: Robert E. Sterling
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Patent number: 4473680Abstract: The resistance of structural elastomer products, such as bearing blocks, to compressive forces is reduced by incorporating therein a plurality of small, separate, reinforcing elements of relatively hard material. Such materials include crushed rock, concrete, glass or certain slags and small metal pieces. The reinforcing elements are congregated in an interior section or core which is covered by a marginal section substantially free from reinforcing elements.Type: GrantFiled: November 30, 1981Date of Patent: September 25, 1984Assignee: Watson Bowman Associates, Inc.Inventor: Stewart C. Watson
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Patent number: 4463120Abstract: A process for preparing an aqueous adhesive composition which comprises preparing a solvent dispersion by mixing rubber, carbon black, vulcanizing agent, tackifying resin and accelerator with sufficient organic solvent to form a solvent dispersion and thereafter emulsifying the solvent dispersion in the presence of water to form an aqueous emulsion. The aqueous emulsion may be used to bond unvulcanized rubber compounds, such as a tread stock to the carcass portion during the formation of a tire.Type: GrantFiled: January 24, 1983Date of Patent: July 31, 1984Assignee: SWS Silicones CorporationInventors: Wendell Collins, Howard L. Brooks
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Patent number: 4444936Abstract: Novel bis-(silylethyl)-oligosulphides are obtained by reacting a vinyl silane of the formula (CH.sub.2 .dbd.CH).sub.m --SiR.sub.n.sup.1 R.sub.4--(m+n) in which R represents chlorine, bromine, iodine, C.sub.1 --C.sub.3 -alkoxy, 2-methoxyethoxy, 2-ethoxyethoxy or hydroxy, R.sup.1 represents C.sub.1 --C.sub.3 -alkyl, phenyl or C.sub.5 --C.sub.7 -cycloalkyl, n is 0, 1 or 2, m is 1 or 2 and m+n is 1, 2 or 3 with sulphur as well as in a given case hydrogen sulphide in molar ratios of vinyl silane to sulphur of from 1:2.5 to 1:10 and vinyl silane to hydrogen sulphide of from 1:0 to 1:5 at temperatures between about 100.degree. and 200.degree. C. under pressure of from 1 to 25 bars (total pressure at the reaction) temperature) and in the presence of sulphidation catalysts known per se, in a given case followed by hydrolysis or partial hydrolysis of the reaction products.Type: GrantFiled: January 27, 1983Date of Patent: April 24, 1984Assignee: Degussa AktiengesellschaftInventors: Rudolf Schwarz, Peter Kleinschmit, Christa Liedtke, Siegfried Wolff
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Patent number: 4436866Abstract: An aqueous coating composition is provided for filamentary materials that yields coated filamentary material with improved weavability and that yields reinforced elastomeric materials having improved properties of flexibility and fatigue resistance. The aqueous adhesive coating composition has a vinyl-pyridine-containing copolymer or terpolymer latex, a non-selfcrosslinkable elastomeric latex, a carboxylated butadiene polymer, and a phenolic aldehyde condensate polymer. The vinyl pyridine-containing elastomeric latex is produced from a vinyl pyridine-containing monomer, 1,3-diene hydrocarbon monomer or the terpolymer is produced in the same way with the addition of a vinyl containing monomer. The non-selfcrosslinkable elastomeric latex has a low gel content of less than around 40 weight percent and a low average particle size of less than around 2000 angstroms.Type: GrantFiled: November 25, 1981Date of Patent: March 13, 1984Assignee: PPG Industries, Inc.Inventor: Mikhail M. Girgis
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Patent number: 4412031Abstract: A modified rubber composition comprising a blend of (a) a modified rubber obtained by reaction a rubber having an unsaturated carbon linkage with an organic compound having a carboxyl group and an aldehyde group in the presence of an acid catalyst, and (b) carbon black.Type: GrantFiled: February 18, 1983Date of Patent: October 25, 1983Assignee: Nippon Zeon Co., Ltd.Inventors: Shizuo Kitahara, Yoshitsugu Hirokawa, Haruki Kawada, Toshihiro Fujii, Nagatoshi Sugi, Hiroaki Hasegawa, Akira Yoshioka
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Patent number: 4385097Abstract: An anticorrosive coating composition comprising (i) an aqueous medium, and dispersed therein, (ii) a water-soluble, film-forming and crosslinkable resin having a hydroxyl group and a proton-free onium salt radical and (iii) a chelate compound of titanium or zirconium.Type: GrantFiled: October 31, 1978Date of Patent: May 24, 1983Assignee: Kansai Paint Co., Ltd.Inventors: Osamu Isozaki, Shun-ichi Kodama
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Patent number: 4370435Abstract: Combination of solvent solutions of chemically modified asphalts and oil based paints compatible therewith are disclosed as coating materials.Type: GrantFiled: October 26, 1981Date of Patent: January 25, 1983Assignee: Owens-Corning Fiberglas CorporationInventors: Michael G. Roberts, Joseph F. Tanner
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Patent number: 4366284Abstract: The disclosed water stopper and water stopping process use an aqueously-swelling water-stopping composition consisting of 10 to 40 weight % of rubber whose main ingredient is reclaimed rubber, 10 to 20 weight % of silicic compound, 10 to 60 weight % of bentonite, and 10 to 40 weight % of plasticizer. The aforesaid water-stopping composition may be extruded into an elongated water stopper with or without a core therein, which water stopper can be inserted into a joint gap or other gap of structural members to stop water at the gap.Type: GrantFiled: January 21, 1981Date of Patent: December 28, 1982Assignee: Hayakawa Rubber Company LimitedInventors: Yoshinobu Ishido, Hideo Tanaka
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Patent number: 4330447Abstract: This invention relates to a blend composition of a metal neutralized sulfonated polymer, a preferential plasticizer and polydialkylsiloxane, wherein the blend composition has improved melt flow and a lower coefficient of friction while substantially maintaining physical properties as compared to the blend of either the metal neutralized sulfonated polymer and preferential plasticizer or the metal neutralized sulfonated polymer itself.Type: GrantFiled: January 5, 1981Date of Patent: May 18, 1982Assignee: Exxon Research & Engineering Co.Inventors: Robert D. Lundberg, Robert R. Phillips, Ilan Duvdevani
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Patent number: 4321183Abstract: Radial block copolymers of the butadiene-styrene type are utilized in an uncured state to form a solid golf ball center which has high rebound characteristics as well as various durometers. The golf ball centers containing the radial block copolymers can be formulated to obtain the specific properties desired by a particular manufacturer and can be manufactured at a lower cost than those presently available.Type: GrantFiled: August 8, 1980Date of Patent: March 23, 1982Assignee: Abbott LaboratoriesInventors: Alvon R. Cox, Thomas A. Molyneaux