Solid Polymer Derived From Monomer Containing Two Or More Ethylenic Groups Patents (Class 524/525)
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Patent number: 5981649Abstract: A rubber composition suitable for use in grips of articles such as golf clubs, tennis rackets, bicycles and tools, comprising (1) a rubber component containing an ethylene-propylene-diene rubber (EPDM), and (2) 5 to 100 parts by weight of a polyisobutylene having a viscosity average molecular weight of 6,000 to 50,000, which provides grips having good feeling of touch, good non-slipping properties in both fine and rainy weather, and giving a small feeling of impact to mis-shot of golf balls as compared with conventional grips.Type: GrantFiled: May 19, 1993Date of Patent: November 9, 1999Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Hidenori Hiraoka, Akihiko Hamada
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Patent number: 5925459Abstract: Use of a transparent grip tab for a strip of adhesive film for a temporary bond based on thermoplastic rubber and tackifier resins, where the adhesive film is of high elasticity and low plasticity and where the adhesion is lower than the cohesion, the adhesion largely disappears when the film is extended, the ratio of peel force to tear load is at least 1:1.5, and where an adhesive bond produced therewith can be detached by pulling on the adhesive film in the direction of the bond plane.Type: GrantFiled: July 1, 1997Date of Patent: July 20, 1999Assignee: Beiersdorf AGInventors: Dieter Zimmermann, Bernd Luhmann
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Patent number: 5883182Abstract: There is provided an aqueous coating composition which contains about 2 to 60% by weight of non-carbonized desulphurized rubber crumb having a mesh size of about 2 to 100. The composition contains about 20 to 60% of a binder and other optional ingredients. The coating composition is particularly useful as a roof mastic.Type: GrantFiled: January 6, 1997Date of Patent: March 16, 1999Assignee: A Creative Research & Testing Co.Inventor: James R. Hunt
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Patent number: 5877249Abstract: The invention relates to a tire with a tread which is reinforced with carbon black and precipitated silica where the tread rubbers are of a blend comprised of at least one diene-based elastomer and a styrene/alphamethylstyrene resin, as hereinafter described.Type: GrantFiled: March 20, 1997Date of Patent: March 2, 1999Assignee: The Goodyear Tire & Rubber CompanyInventor: Jean-Paul Lambotte
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Patent number: 5869563Abstract: The ethylene/.alpha.-olefin/nonconjugated polyene copolymer rubber composition of the present invention comprises in specified proportions a crystalline polyolefin resin (A) and an ethylene/.alpha.-olefin/nonconjugated polyene copolymer rubber (B) composed of ethylene, an .alpha.-olefin having 3 to 20 carbon atoms and a specific branched chain polyene compound. The molar ratio of ethylene units to .alpha.-olefin units, iodine value and intrinsic viscosity ?.eta.! of the ethylene/.alpha.-olefin/nonconjugated polyene copolymer rubber (B) are within respective specified ranges. This rubber composition is excellent in low temperature properties. When the above olefinic thermoplastic elastomer composition is partially or entirely crosslinked, a molding can be provided which is superior to the conventional vulcanized rubbers in low temperature properties, tensile strength, elongation at break and rubber properties.Type: GrantFiled: June 12, 1996Date of Patent: February 9, 1999Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Masaaki Kawasaki, Hidenari Nakahama, Tetsuo Tojo, Toshiyuki Tsutsui, Kyoko Kobayashi, Toshihiro Sagane
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Patent number: 5863978Abstract: Improved polyvinylchloride-free compositions useful for wall and floor coverings comprise an optionally functionalized, ethylenically unsaturated block copolymer of monoalkenyl aromatic hydrocarbon and conjugated alkadiene, or selectively hydrogenated derivative thereof, an ethylene polymer, functionalized polyalkylene, polyisobutylene and particulate filler.Type: GrantFiled: September 26, 1997Date of Patent: January 26, 1999Assignee: Shell Oil CompanyInventor: Philippe Vosters
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Patent number: 5861212Abstract: An adhesive composition comprised of (A) a latex of 100 wt. parts of a carboxyl group-containing highly saturated nitrile-conjugated diene copolymer rubber, (B) 5-30 wt. parts of a resorcinol-formaldehyde resin, and (C) 2-10 wt. parts of an aromatic epoxy resin. A composite comprised of a nitrile group-containing highly saturated copolymer rubber and a fibrous material, which has been treated with the adhesive composition. This composite is useful for belts.Type: GrantFiled: June 4, 1996Date of Patent: January 19, 1999Assignee: Nippon Zeon Co., Ltd.Inventors: Osamu Mori, Mitsugu Ishihara
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Patent number: 5856400Abstract: A polypropylene resin composition comprising an isotactic polypropylene component, a rubber component, and an inorganic filler component, wherein (a) the melt flow rate, according to ASTM D1238, is 20 g/10 min or more, (b) the flexural modulus, according to ASTM D790, is 2300 MPa or more, (c) the Izod impact strength, according to ASTM D256, is 180 J/m or more at 23.degree. C. and 45 J/m or more at -30.degree. C., (d) the heat deformation temperature, according to ASTM D648, is 130.degree. C. or more, and (e) there is a diffraction peak unique to polypropylene of space group P21/c in the diffraction pattern measured by the wide angle X-ray diffraction method in an injection molded article of the composition formed under a quenching condition.Type: GrantFiled: August 29, 1996Date of Patent: January 5, 1999Assignees: Ube Industries, Ltd., Toyota Jidosha Kabushiki KaishaInventors: Takenobu Matsumura, Masahiro Naiki, Takao Nomura, Takeyoshi Nishio
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Patent number: 5849836Abstract: Methods for coagulating a graft polymer latex comprise contacting the latex with sulfurous acid. The methods are particularly suitable for ABS resins and provide products having improved thermal oxidative stability and color stability. When coagulation is effected in the presence of a radical initiator, the residual grafting monomer concentration in the resin product is reduced.Type: GrantFiled: June 14, 1996Date of Patent: December 15, 1998Assignee: General Electric CompanyInventor: John C. Wozny
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Patent number: 5804661Abstract: An EPDM flashing composition comprises 100 parts by weight of an elastomeric polymer comprising from about 85 to 100 parts by weight of at least one ethylene-propylene-diene terpolymer having up to about 2 percent by weight crystallinity and from 0 to about 15 parts by weight of an ethylene-propylene-diene terpolymer having more than 2 percent by weight crystallinity; from about 40 to 120 parts by weight of a filler selected from the group consisting of reinforcing and non-reinforcing materials and mixtures thereof, per 100 parts of the polymer; from about 40 to 105 parts by weight of a processing material and mixtures thereof, per 100 parts of the polymer; and from about 0.5 to 6 parts by weight of a cure package, per 100 parts of the polymer, the cure package comprising from about 0.1 to 1.25 parts by weight sulfur and from 0.4 to 5 parts by weight of at least one sulfur vulcanizing accelerator and being devoid of hexasulfides and thioureas.Type: GrantFiled: February 21, 1996Date of Patent: September 8, 1998Assignee: Bridgestone/Firestone, Inc.Inventors: James A. Davis, Joseph J. Kalwara, Brian S. Alexander
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Patent number: 5798416Abstract: Provided is an automobile vibration-isolating rubber composition, characterized in that a rubber component comprises from 10 to 80% by weight of a polybutadiene rubber which is obtained through the polymerization using a rare-earth element catalyst and which has a cis content of 97% or more, and from 90 to 20% by weight of at least one type of a rubber selected from a natural rubber, a synthetic polyisoprene rubber and a polystyrene-butadiene copolymer rubber. The automobile vibration-isolating rubber obtained by vulcanizing the rubber composition of the present invention has a low dynamic factor compared to the conventional product, making it possible to decrease automobile passenger compartment noise caused by road noise.Type: GrantFiled: July 11, 1996Date of Patent: August 25, 1998Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Tsuneo Kamata, Makoto Niki, Yoshihide Ueda
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Patent number: 5773501Abstract: A flame-retardant styrene resin composition comprises a styrene resin, a halogen-containing flame retardant and a flame retarding assistant comprising antimony trioxide having an average size of 5.2 microns or larger and is improved in view of weatherability.Type: GrantFiled: December 6, 1996Date of Patent: June 30, 1998Assignee: Daicel Chemical Industries, Ltd.Inventors: Kenji Watanabe, Michio Yasuda
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Patent number: 5756575Abstract: The ethylene/.alpha.-olefin/nonconjugated polyene copolymer rubber composition of the present invention comprises in specified proportions a crystalline polyolefin resin (A) and an ethylene/.alpha.-olefin/nonconjugated polyene copolymer rubber (B) composed of ethylene, an .alpha.-olefin having 3 to 20 carbon atoms and a specific branched chain polyene compound. The molar ratio of ethylene units to .alpha.-olefin units, iodine value and intrinsic viscosity ?.eta.! of the ethylene/.alpha.-olefin/nonconjugated polyene copolymer rubber (B) are within respective specified ranges. This rubber composition is excellent in low temperature properties. When the above olefinic thermoplastic elastomer composition is partially or entirely crosslinked, a molding can be provided which is superior to the conventional vulcanized rubbers in low temperature properties, tensile strength, elongation at break and rubber properties.Type: GrantFiled: June 12, 1996Date of Patent: May 26, 1998Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Masaaki Kawasaki, Hidenari Nakahama, Tetsuo Tojo, Toshiyuki Tsutsui, Kyoko Kobayashi, Toshihiro Sagane
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Patent number: 5744211Abstract: A nitrile rubber-polyvinyl chloride polyblend rubber composition containing a paraffinic process oil alone or a combination of paraffinic process oil and one or more other lubricants, which is used as molded articles such as door mirror bracket. The molded articles of the present invention give a much lower sliding resistance.Type: GrantFiled: January 7, 1994Date of Patent: April 28, 1998Assignee: Toyoda Gosei Co., Ltd.Inventors: Rikizou Nakata, Hidenori Hayashi
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Patent number: 5744534Abstract: A light scattering material is prepared by mixing with and dispersing in a transparent elastomer matrix particles of a transparent material. The matrix has a Tg of lower than room temperature and the transparent material has a different index of refraction form the matrix.Type: GrantFiled: April 12, 1996Date of Patent: April 28, 1998Assignee: Bridgestone CorporationInventors: Minoru Ishiharada, Itsuo Tanuma, Kazuo Naito
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Patent number: 5736605Abstract: A vinyl chloride resin composition comprising 100 parts by weight of a vinyl chloride resin, from 20 to 200 parts by weight of a plasticizer, from 10 to 250 parts by weight of a rubber material containing from 20 to 95 wt % of a gel content insoluble in tetrahydrofuran, and from 0.5 to 30 parts by weight of an acrylic resin obtained by copolymerizing from 20 to 50 wt % of methyl methacrylate with from 80 to 50 wt % of at least one monomer selected from the group consisting of acrylates, methacrylates (other than methyl methacrylate) and styrene.Type: GrantFiled: June 12, 1996Date of Patent: April 7, 1998Assignee: Mitsubishi Chemical MKV CompanyInventor: Masabumi Oshima
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Patent number: 5723532Abstract: To provide a resin material greatly improved in rigidity and strength while maintaining or further improving the impact resistance characteristic of a high-impact polystyrene.A long-fiber-reinforced high-impact polystyrene resin structure of at least 3 mm in length is formed by compounding (A) a high-impact polystyrene resin with (B) 8 to 80 wt. % (based on the whole composition) of a fibrous reinforcement blended therewith, the fibrous reinforcement (B) being substantially the same in length as the structure and arrayed substantially in parallel in the lengthwise direction of the structure.Type: GrantFiled: December 27, 1995Date of Patent: March 3, 1998Assignee: Daicel Chemical Industries, Ltd.Inventors: Tatsuo Izumitani, Haruji Murakami
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Patent number: 5723543Abstract: A thermoplastic elastomer composition is provided. The composition comprises a hydrogenated elastomeric block copolymer having at least two resinous endblocks of polymerized monovinyl aromatic compound and an elastomeric midblock of polymerized conjugated diene, a midblock plasticizer, and an ethylene-acrylate copolymer or terpolymer. The thermoplastic elastomer exhibits improved overmolding adhesion to polar matrices over compositions not containing the ethylene-acrylate polymer.Type: GrantFiled: September 26, 1996Date of Patent: March 3, 1998Assignee: Shell Oil CompanyInventor: Michael John Modic
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Patent number: 5717029Abstract: The invention is a thermoformable polymer blend comprising:A) from 9 to 90 parts by weight of a monovinylidene aromatic polymer or an impact modified monovinylidene aromatic polymer, comprising from 1 to 25 weight percent of a rubber and 75 to 99 weight percent of a monovinylidene aromatic polymer matrix having a weight average molecular weight (M.sub.w) from 50,000 to 400,000, said weight percents being based on the total weight of said impact modified, monovinylidene aromatic polymer;B) from 9 to 90 parts by weight on an olefin polymer, selected from the group consisting of homopolymers of ethylene or propylene and copolymers of ethylene with one or more C.sub.Type: GrantFiled: April 29, 1996Date of Patent: February 10, 1998Assignee: The Dow Chemical CompanyInventors: Jeffrey E. Bonekamp, Robert J. Donald, Steven B. Swartzmiller, Andre J. Uzee
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Patent number: 5717021Abstract: The present invention involves blends of polycarbonate resin with rubber grafted terpolymer resin, one or more styrenic rigid coplymers wherein a small amount of an aliphatic C.sub.4 to C.sub.16 polyalpha olefin homopolymer or copolymer or its functionalized derivatives is included in the blend.Type: GrantFiled: November 18, 1996Date of Patent: February 10, 1998Assignee: General Electric CompanyInventors: Jianing Huang, Ronald L. Jalbert, Mark Giammattei, Gregory J. Stoddard
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Patent number: 5705554Abstract: A coating composition for use as an overcoat or heat resistant coating having improved heat resistance comprised of an aqueous latex polymer emulsion and a water soluble or water-dispersible resin which containing a sufficient number of either (a) carboxyl groups or (b) carboxyl and amide groups which will form at least one anhydride ring or imide, in the presence of sufficient heat, and release water molecules, with the latex polymer having a particle size of less than about 1600 Angstroms and containing an effective amount of a nitrogen containing volatile base to achieve a pH of greater than about 7.5 to keep the resin solubilized or dispersed.Type: GrantFiled: July 10, 1995Date of Patent: January 6, 1998Assignee: The B.F. Goodrich CompanyInventors: Ti Chou, James Stanley Dodge, George Kletecka
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Patent number: 5705568Abstract: New polypropylenes which are obtained by chemical degradation of elastic polypropylenes using organic peroxides.Type: GrantFiled: July 24, 1996Date of Patent: January 6, 1998Assignee: PCD Polymere Gesellschaft m.b.H.Inventors: Markus Gahleitner, Klaus Bernreitner, Norbert Hafner, Rudolf Wolfer, Wolfgang Neissl
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Patent number: 5703154Abstract: A premolded EPDM pipe flashing composition comprises 100 parts by weight of an elastomeric polymer comprising from about 70 to 95 parts by weight of at least one amorphous ethylene-propylene-diene terpolymer and from 5 to about 30 parts by weight of at least one crystalline or semi-crystalline ethylene-propylene-diene terpolymer; from about 35 to 175 parts by weight of a filler selected from the group consisting of reinforcing and non-reinforcing materials and mixtures thereof, per 100 parts of the polymer; from about 30 to 110 parts by weight of a processing material and mixtures thereof, per 100 parts of the polymer; and from about 0.6 to 7.5 parts by weight of a cure package, per 100 parts of the polymer, the cure package comprising from about 0.1 to 1.5 parts by weight sulfur and from 0.5 to 6 parts by weight of at least one sulfur vulcanizing accelerator.Type: GrantFiled: July 11, 1996Date of Patent: December 30, 1997Assignee: Bridgestone/Firestone, Inc.Inventors: James A. Davis, William A. Wasitis, William F. Barham
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Patent number: 5686518Abstract: An essentially stable monomer miniemulsion characterized by small monomer droplet size is prepared and is then polymerized to a polymer latex under free radical polymerization conditions. The monomer miniemulsions herein include, in addition to water, a surfactant, and a monomer or mixture thereof, one or more polymers which function as a polymeric co-surfactant. The monomer miniemulsions are characterized by average monomer droplet size of 10 to 500 nanometers, preferably 80 to 150 nanometers. The amount of polymer added as a co-surfactant is about 0.5 to about 5 percent by weight based on monomer weight. The monomer emulsion may contain either a single monomer or a monomer mixture. The monomer emulsion is polymerized under conventional emulsion polymerization conditions yielding a polymer latex having an average polymer particle size of 10 to 500 nanometers, preferably 80 to 150 nanometers, and a narrow particle size distribution, i.e., a polydispersity index of about 1.05 to about 1.40.Type: GrantFiled: January 3, 1995Date of Patent: November 11, 1997Assignee: Georgia TechInventors: Kevin J. Fontenot, F. Joseph Schork, Jay L. Reimers
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Patent number: 5684082Abstract: There is disclosed a method for adhering rubber to reinforcing materials which comprises embedding a textile fiber or metal reinforcing material in a vulcanizable rubber composition comprising rubber, a vulcanizing agent, reinforcement, a methylene donor, a methylene acceptor and a maleic anhydride functionalized triblock copolymer having polystyrene endblocks and poly-(ethylene/butylene) midblocks.Type: GrantFiled: February 27, 1997Date of Patent: November 4, 1997Assignee: The Goodyear Tire & Rubber CompanyInventor: Thomas Joseph Segatta
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Patent number: 5656687Abstract: There is disclosed a method for adhering rubber to reinforcing materials which comprises embedding a textile fiber or metal reinforcing material in a vulcanizable rubber composition comprising rubber, a vulcanizing agent, reinforcement, a methylene donor, a methylene acceptor and a maleic anhydride functionalized triblock copolymer having polystyrene endblocks and poly-(ethylene/butylene) midblocks.Type: GrantFiled: April 23, 1996Date of Patent: August 12, 1997Assignee: The Goodyear Tire & Rubber CompanyInventor: Thomas Joseph Segatta
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Patent number: 5643981Abstract: The flameproof thermoplastic resin compositions of this invention comprise from 2 to 20 parts by weight of aromatic diphosphates, from 2 to 7 parts by weight of phosphorous compounds and from 0.1 to 2.0 parts by weight of polyfluoroalkyl resins per 100 parts by weight of the resin mixture consisting of from 60 to 98% by weight of polycarbonate resins, from 2 to 40% by weight of styrene-containing graft copolymer resins, and from 0 to 20% by weight of styrene-containing copolymer resins. The structural formula of said aromatic diphosphates is as follows (I): ##STR1## in which, R.sup.1 and R.sup.2 are same or different lower alkyls, R.sup.3 and R.sup.4 are same or different hydrogen atom or alkyl groups, Y is a single bond or --CH.sub.2 --, --C(CH.sub.3).sub.2 --, --S--, --SO.sub.2 --, --O--, --CO--, or --N.dbd.N--, k is 0 or 1, and m is an integer of 0 to 4.Type: GrantFiled: November 1, 1994Date of Patent: July 1, 1997Assignee: Cheil Industries, Inc.Inventors: Sam-Joo Yang, Bok-Nam Jang
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Patent number: 5635551Abstract: A composition for molding products from unusable tires is disclosed. The composition for molding consists of pulverized tires, one or more resins selected from polypropylene resin, low density polyethylene resin and high density polyethylene resin and one or more chemicals selected from the group of acetone, caustic soda, glass wool, ammonium phosphate, starch and pigments. The composition components are well mixed, melted at 230.degree. C. to 350.degree. C. and molded by injecting, extruding or pressing. Products formed from the composition can be used to form various kinds of industrial construction materials which have high strength and smooth surface.Type: GrantFiled: April 19, 1996Date of Patent: June 3, 1997Inventor: Whanjo Lee
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Patent number: 5631316Abstract: Vulcanizable tire innerliner compositions are described which are essentially free of halogen atoms or contain a reduced halogen content. The innerliners contain a saturated elastomeric interpolymer of a C.sub.4 -C.sub.7 isomonoolefin, e.g., isobutylene and a para-alkylstyrene e.g., para-methylstyrene, which contains benzylic ester functionality having the structure: ##STR1## wherein R.sub.2 and R.sub.3 are independently selected from hydrogen or C.sub.1 to C.sub.6 alkyl, and R.sub.4 is selected from hydrogen, C.sub.1, to C.sub.28 alkyl, aryl or C.sub.2 to C.sub.28 alkenyl.Innerliners of the invention provide excellent impermeability to air, heat aging properties and good adhesion to tire carcass stock required for tire innerliners, and are also essentially free of halogen or contain low halogen content thereby reducing environmental concerns occasioned by the incineration of used tires.Type: GrantFiled: June 7, 1995Date of Patent: May 20, 1997Assignee: Exxon Chemical Patents Inc.Inventors: Bernard J. Costemalle, James V. Fusco, Pierre T. Hous, Hsien-Chang Wang
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Patent number: 5629371Abstract: Disclosed is a resin molding comprising a molding composed of a resin composition comprising 100 parts by weight of a substrate resin comprising 100 to 30% by weight of at least one propylene polymer selected from the group consisting of propylene/ethylene block copolymers having an ethylene content of 3 to 45% by weight and propylene/ethylene random copolymers having an ethylene content of 0.5 to 10% by weight and 0 to 70% by weight of an elastomer, and at least one member selected from the group consisting of (A) 0.01 to 10 parts by weight of a 1,3-diene polymer having at least one terminal hydroxyl group or a hydrogenation product thereof, (B) 0.01 to 40 parts by weight of a copolymer of ethylene with an unsaturated compound containing a carboxyl group (including an acid anhydride group) and (C) 0.Type: GrantFiled: October 19, 1993Date of Patent: May 13, 1997Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Sadao Kitagawa, Yuta Kumano
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Patent number: 5624986Abstract: The novel adhesives of this invention contain a blend of components that result in the adhesive having a physical property that changes at a controlled rate as a function of time after application until it reaches a final equilibrium value.The adhesives can contain a thermoplastic polymer base, a tackifying resin, and an aromatic plasticizer optionally in combination with other ingredients. The plasticizer tackifier combination is chosen such that the tackifier/plasticizer interaction causes the initial value of the physical property after application to change, at a controlled rate, to a final equilibrium level.Type: GrantFiled: October 17, 1995Date of Patent: April 29, 1997Assignee: H. B. Fuller Licensing & Financing Inc.Inventors: William L. Bunnelle, Christopher M. Ryan
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Patent number: 5594064Abstract: A composition comprising an inorganic filler and binder component containing a glassy polymer and a rubbery polymer is provided. The glassy polymer contacts and encapsulates the filler. The compositions are especially useful in the fabrication of flexible magnetic recording media and abrasive articles.Type: GrantFiled: May 3, 1995Date of Patent: January 14, 1997Assignee: International Business Machines CorporationInventor: Richard L. Bradshaw
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Patent number: 5571350Abstract: A pneumatic tire for all seasons comprises a tread provided with a foamed rubber containing a given amount of a particular resin such as crystalline syndiotactic 1,2 -polybutadiene having specified hardness and average particle size, and having specified expansion ratio, average expanded cell size and storage modulus (E') at -20.degree. C. of a given range, and exhibits satisfactory braking and traction performances at not only dry-on-ice state but also wet-on-ice state while sufficiently holding the steering stability, durability and low fuel consumption in summer season.Type: GrantFiled: June 6, 1995Date of Patent: November 5, 1996Assignee: Bridgestone CorporationInventors: Hiroyuki Teratani, Masanori Aoyama
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Patent number: 5569686Abstract: The adhesive of the present invention includes latexes with an adhesion promoter which is preferably polyamidoamine. The addition of the polyamidoamine improves the adhesive strength between substrates such as between two plastic films or between a plastic film and paperboard. The present invention also provides for an adhesive prepared from a latex which is neutralized with a particular base and a hydrophobic polyamidoamine having particular amine values and viscosity whereby the strength of the adhesive bond is increased in humid conditions. The present invention also provides for adhesives primarily for use in laminate structures which are exposed to highly humid conditions. The adhesive is a polymeric latex based system to which a polymeric adhesion promoter like polyamidoamine and an epoxy emulsion are added. The adhesive retains bond strength when exposed to humidity.Type: GrantFiled: March 19, 1990Date of Patent: October 29, 1996Assignee: The Dow Chemical CompanyInventors: Ashok C. Makati, Charles S. Kan, Robert T. Iwamasa, Do I. Lee
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Patent number: 5559192Abstract: An air curing polymer composition is disclosed which contains acetoacetate functional polymer and an autoxidizable material. The composition cures on exposure to oxygen. One pack stable ambient curing compositions and a method of stabilizing acetoacetate functional groups to prevent hydrolysis are also disclosed.Type: GrantFiled: June 6, 1995Date of Patent: September 24, 1996Assignee: Rohm and Haas CompanyInventors: Daniel A. Bors, Alvin C. Lavoie, William D. Emmons
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Patent number: 5556907Abstract: A caoutchouc mixture vulcanisable with sulphur, tyre treads manufactured therefrom and also tyres with a vulcanised tread are proposed. The caoutchouc mixture contains 30 to 100 parts by weight of isoprene-butadiene-styrene terpolymer with a glass transition temperature range between -90.degree. C. and 20.degree. C., 0 to 70 parts by weight of one or more further elastomers, 20 to 90 parts by weight of silica as filler material, customary additives and also a vulcanisation system. This caoutchouc mixture delivers tyre treads with good resistance to abrasion and a low loss factor which is correlated with a low running resistance.Type: GrantFiled: January 17, 1995Date of Patent: September 17, 1996Assignee: SP Reifenwerke GmbHInventors: Hans-Bernd Fuchs, Dietrich G unter, Ulrich Steinbrecht
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Patent number: 5543470Abstract: The present invention provides a vulcanized rubber for a heat resistant vibration-isolator which can be obtained by vulcanizing a composition comprising:(A) 110-175 parts by weight of an oil-extended copolymer comprising 100 parts by weight of an ethylene-.alpha.-olefin-non-conjugated diene copolymer rubber with intrinsic viscosity [.eta.] of 3 dl/g or more and 10-75 parts by weight of an extender oil;(B) 5-20 parts by weight of a liquid diene polymer with melt viscosity of 100-3000 poise at 25.degree. C., per 100 parts by weight of an ethylene-.alpha.-olefin-non-conjugated diene copolymer rubber; and(C) 10-80 parts by weight of a reinforcing filler, per 100 parts by weight of an ethylene-.alpha.-olefin-non-conjugated diene copolymer rubber; with an organic peroxide.The vulcanized rubbers of the present invention have excellent thermal stability and durability, a low dynamic spring constant, and excellent processability.Type: GrantFiled: December 7, 1994Date of Patent: August 6, 1996Assignee: Sumitomo Chemical Company, LimitedInventors: Hiroki Nakata, Mitsuhiko Sato, Masashi Aoshima
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Patent number: 5523328Abstract: Disclosed as one embodiment is a method of producing useful articles from ground whole tire waste, which includes the steps of continuously extruding a heated mixture of ground whole tire waste and thermoplastic binder material into a continuously cooled, open-ended casting chamber. The apparatus for practicing this embodiment includes an extruder, a transition nozzle having an outlet with a cross-section corresponding to the desired cross-section of the useful article, and a casting chamber being constructed and arranged to remove thermal energy from an inner surface of the casting chamber.Type: GrantFiled: May 16, 1994Date of Patent: June 4, 1996Assignee: Renewed Materials Industries, Inc.Inventors: James E. Rosenbaum, Frank R. Keith
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Patent number: 5484844Abstract: A vinyl chloride resin elastomer composition comprises 100 parts by weight of a resin mixture comprising from 50 to 95 parts by weight of a vinyl chloride resin and from 5 to 50 parts by weight of a chlorinated polyethylene; from 20 to 400 parts by weight of an acrylonitrile-butadiene rubber containing a tetrahydrofuran-insoluble crosslinking component; and from 10 to 300 parts by weight of a plasticizer.Type: GrantFiled: April 1, 1993Date of Patent: January 16, 1996Assignee: Mitsubishi Chemical MKV CompanyInventors: Masabumi Oshima, Masaji Yamamori
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Patent number: 5473017Abstract: Intervulcanized compositions having improved curing efficiency are prepared by the free radical curing of a mixture of an ethylenically unsaturated diolefin polymer such as natural or synthetic rubber and a saturated or low unsaturation polymer such as an isobutylene/para-methylstyrene copolymer which contains functional groups pendant to the polymer chain. These functional groups contain an olefinic or vinyl double bond positioned alpha, beta to a substituent group which activates the double bond towards free radical addition reactions with the diolefin polymer. Preferred functionality includes benzylic ester functionality represented by the structure: ##STR1## wherein R.sub.2 and R.sub.3 are independently selected from hydrogen or C.sub.1 to C.sub.6 alkyl, and R.sub.4 is selected from hydrogen, C.sub.1 to C.sub.28 alkyl, aryl or C.sub.2 to C.sub.28 alkenyl.Type: GrantFiled: September 14, 1994Date of Patent: December 5, 1995Assignee: Exxon Chemical Patents Inc.Inventor: Hsien-Chang Wang
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Patent number: 5466739Abstract: A water-based maskant composition and a chemical milling method using the maskant composition. Said water-based maskant composition comprises 100 parts by weight (as solids) of a latex constituent consisting of (a) 5-60 parts by weight (as solids) of a copolymer latex obtained by emulsion-polymerization of a monomer mixture consisting of 30-70% by weight of an aliphatic conjugated diene compound, 20-70% by weight of an aromatic vinyl compound, 0-10% by weight of an ethylenically unsaturated carboxylic acid and 0-50% by weight of a vinyl compound copolymerizable therewith and (b) 95-40 parts by weight (as solids) of a natural rubber latex; 10-500 parts by weight of a filler; and 0.1-10 parts by weight of a thickener, wherein the vicosity at 25.degree. C. is 500-5,000 cps as measured by BH type rotor at 20 rpm at a solids concentration of 50% by weight, the pH is 7-9 and the tensile strength and elongation of a film obtained from the composition are 50-150 kgf/cm.sup.Type: GrantFiled: October 14, 1994Date of Patent: November 14, 1995Assignee: Japan Synthetic Rubber Co., Ltd.Inventors: Tukasa Maeda, Yasuhiko Sasagawa, Yorinobu Ikeda, Teruo Hiraharu
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Patent number: 5455295Abstract: A racetrack surface composition including a synthetic polymer component, a hydrocarbon oil fluid between 25.degree.-90.degree. F., and a particulate material such as sand. The synthetic polymer component is preferably either an elastomer, or an elastomer in combination with non-elastomeric polymer; or generally a mixture of oil soluble and oil dispersible polymer which together with the oil form a binder for the particulates. The racetrack composition readily forms a pad and the cushion portion does not clump or compact but maintains its granular, rakeable quality even at track temperatures above about 130.degree. F. The composition is not adversely affected by wet weather. The invention further includes the addition of carbon black to the racetrack composition in order to improve weatherability. In the event that the racetrack composition is not readily rakeable, the invention teaches the post addition of a rakeability promoter to improve rakeability.Type: GrantFiled: October 11, 1991Date of Patent: October 3, 1995Assignee: Fastrac Systems, Inc.Inventors: Charles R. Bearden, Sherman Kottle
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Patent number: 5446085Abstract: A composition comprising an inorganic filler and binder component containing a glassy polymer and a rubbery polymer is provided. The glassy polymer contacts and encapsulates the filler. The compositions are especially useful in the fabrication of flexible magnetic recording media and abrasive articles.Type: GrantFiled: June 15, 1993Date of Patent: August 29, 1995Assignee: International Business Machines CorporationInventor: Richard L. Bradshaw
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Patent number: 5430084Abstract: The invention relates to a method of preparing a sulfur curable rubber composition by first forming a pre-blend of polyoctenamer and silica and then blending the pre-blend with at least one additional sulfur curable rubber. The invention also relates to a pneumatic rubber tire having a sulfur cured rubber tread comprised of the aforesaid rubber composition.Type: GrantFiled: June 15, 1992Date of Patent: July 4, 1995Assignee: The Goodyear Tire & Rubber CompanyInventors: Paul H. Sandstrom, Thomas J. Segatta, Pamela J. Buss
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Patent number: 5424355Abstract: An aqueous coating composition comprising fine polymer particles dispersed in an aqueous medium and an inorganic filler, wherein said fine polymer particles comprise synthetic rubber emulsion polymer particles having a glass transition temperature of 0.degree. C. or less and emulsion polymer particles having a glass transition temperature of 20.degree. C. or more, and further, according to circumstances, urethane emulsion polymer particles. This composition has various properties as a chipping-resistant coating agent in good balance and is particularly useful for coating of the outdoor sheet metal working members of wheeled vehicles.Type: GrantFiled: April 20, 1994Date of Patent: June 13, 1995Assignee: Nippon Carbide Kogyo Kabushiki KaishaInventors: Masami Uemae, Takeshi Komatsu, Yoshihiro Maeyama, Takashi Yamakoshi, Akira Kume
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Patent number: 5416153Abstract: Polyolefin molding composition of high rigidity and hardnessA polyolefin molding composition essentially comprisinga) a polyolefin wax andb) a high-molecular-weight polyolefin or, instead of b),c) a high-molecular-weight olefin copolymer has high rigidity and hardness.In order to increase the impact strength, this molding composition may additionally be admixed with a rubber having a glass transition temperature of below -20.degree. C.Type: GrantFiled: June 22, 1994Date of Patent: May 16, 1995Assignee: Hoechst AktiengesellschaftInventors: Andreas Winter, Bernd Bachmann
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Patent number: 5416146Abstract: A thermoplastic elastomer composition comprising 100 parts by weight of a vinyl chloride resin, from 20 to 300 parts by weight of a nitrile rubber, from 25 to 200 parts by weight of a plasticizer, from 10 to 200 parts by weight of a filler and a curing agent for the rubber, and being meltable by a roll set at a temperature of 190.degree. C.Type: GrantFiled: February 25, 1994Date of Patent: May 16, 1995Assignee: Denki Kagagu Kogyo Kabushiki KaishaInventors: Yuichiro Kushida, Shoichi Tamegai, Akio Hirohashi
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Patent number: 5412020Abstract: The propylene polymer composition of the invention comprises, as its essential components, a specific propylene polymer [A] described below and a propylene block copolymer [B]. In addition to the propylene polymer [A] and the propylene block copolymer [A], the propylene polymer composition may contain a thermoplastic elastomer [C] selected from polystyrene.polyethylene/poybutylene.polystyrene block copolymers and ethylene/.alpha.-olefin random copolymers, or may further contain an inorganic filler [D]. The propylene polymer [A] used in the invention has the following characteristic properties:(1) a boiling heptane-insoluble component is contained in said polymer in an amount of not less than 96% by weight,(2) a pentad isotacticity [M.sub.5 ] of the boiling heptane-insoluble component obtained from the following formula (1) using a .sup.13 C-NMR spectrum is in the range of 0.970 to 0.995: ##EQU1## (3) a pentad tacticity [M.sub.Type: GrantFiled: July 28, 1994Date of Patent: May 2, 1995Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Akihiko Yamamoto, Yurimasa Zenitani, Masayoshi Yamaguchi
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Patent number: 5407991Abstract: The invention provides an olefinic thermoplastic elastomer composition which is excellent in flexibility, processability into sheet and appearance of the resulting sheet and which is able to substitute for flexible polyvinyl chloride. The invention further provides a covering material for industrial parts comprising said composition and a laminate comprising said covering material.The composition comprises a partially crosslinked thermoplastic elastomer I containing an oil-extended olefinic copolymer rubber comprising an olefinic copolymer rubber having a Mooney viscosity of 200-350 or the thermoplastic elastomer I and a partially crosslinked thermoplastic elastomer II containing an oil-extended olefinic copolymer rubber comprising an olefinic copolymer rubber having a Mooney viscosity of 120 or higher and lower than 200 and the composition has a specific viscoelastic characteristics.Type: GrantFiled: October 26, 1993Date of Patent: April 18, 1995Assignee: Sumitomo Chemical Co., Ltd.Inventors: Tadashi Hikasa, Koji Yamashita, Satoru Hosoda, Kiyoshi Mitsui, Yuji Kanda
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Patent number: 5397832Abstract: Thermoplastic elastomers having improved low temperature properties are provided by incorporating suitable low molecular weight ester plasticizer into blends of crystalline polyolefin homopolymer or copolymer and olefinic rubber. The rubber component of the composition is at least partially cured.Type: GrantFiled: January 10, 1994Date of Patent: March 14, 1995Assignee: Advanced Elastomer Systems, L.P.Inventor: Maria D. Ellul