Ethylene-propylene Terpolymer, E.g., Ept, Epdm, Epr, Etc. Patents (Class 525/331.7)
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Publication number: 20090020731Abstract: Nonconjugated conductive polymers, which are all polymers that have a ratio of double bonds to total bonds of less than ½ are doped with iodine to produce compositions with unexpected characteristics in this invention. The mechanical and elastomeric properties of a nonconjugated polymer can be enhanced by doping the polymer with an electron acceptor such as iodine, in order to cure the polymer. Among the nonconjugated polymers are the cis-1,4-polyisoprene, cis-1,4 polybutadiene, styrene-butadiene copolymers (SBR), ethylene-propylene-diene monomer and poly (?-pinene). A heated mixture of iodine and sulfur produces a faster rate of vulcanization of rubber than using sulfur alone.Type: ApplicationFiled: October 2, 2008Publication date: January 22, 2009Inventor: Mrinal Thakur
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Publication number: 20080221274Abstract: The invention relates to elastomeric structures comprising first and second members, each of a different elastomeric material, in which the first member includes a modifier. The shaped structure may be, for example, an automotive weatherseal.Type: ApplicationFiled: May 24, 2006Publication date: September 11, 2008Inventor: Eric Jourdain
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Publication number: 20070244285Abstract: A rubber roller, for use in an image-forming apparatus, which is formed by molding a rubber composition into the shape of a roller. In the rubber roller, a complex elastic modulus E* of rubber and a surface roughness Rz of the rubber roller satisfy a relationship indicated by an equation (1) shown below; and a hardness change of the rubber is set to not more than five points when the rubber ages at 70° C. for eight days: 7×Ln E*?0.12×Rz+3.0?10 .Type: ApplicationFiled: March 6, 2007Publication date: October 18, 2007Inventor: Akira Minagoshi
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Patent number: 7166678Abstract: A torsional vibration damper or other vibration damping device with a rubber vibration absorbing element. The rubber element is a peroxide-cured composition comprising 100 parts of ethylene-alpha-olefin elastomer, and 20 to 100 parts of substantially isobutylene or butene polymer having a viscosity average molecular weight greater than about 5000. The polymer may also be a copolymer of isobutylene and isoprene. The addition of the isobutylene polymer to the ethylene-alpha-olefin elastomer composition increases the vibration damping character of the rubber.Type: GrantFiled: March 31, 2004Date of Patent: January 23, 2007Assignee: The Gates CorporationInventors: Paul N. Dunlap, Bobbie E. South
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Patent number: 7030196Abstract: The invention relates to the use of known hydroxylamine esters selected from the group consisting of HALS (sterically hindered amine) compounds and novel hydroxylamine esters for the controlled degradation of polypropylene.Type: GrantFiled: May 14, 2001Date of Patent: April 18, 2006Assignee: Ciba Specialty Chemicals CorporationInventors: Michael Roth, Rudolf Pfaendner, Peter Nesvadba, Marie-Odile Zink
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Patent number: 7012107Abstract: A rocket motor insulation including an elastomer-based polymer is improved in its processability by the addition of silica particles treated with a hydrophobic coating. The insulation also preferably includes a metallic coagent cross-linker, which when used in combination with the hydrophobic silica particles increases the tear strength and the elasticity of the insulation, while at the same time not adversely affecting the bonding characteristics of the insulation.Type: GrantFiled: June 17, 2003Date of Patent: March 14, 2006Assignee: Alliant Techsystems Inc.Inventors: Albert R. Harvey, John W. Ellertson
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Patent number: 6982302Abstract: An automotive molding, which is excellent in scratching resistance, has high gloss, and is excellent in weathering resistance. The automotive molding of the invention has a part composed of an elastomer material containing an olefinic random copolymer obtained by copolymerizing ethylene, an ?-olefin having 3 to 10 carbon atoms and an unsaturated monomer having a functional group, and optionally a non-conjugated diene, and a metal ion for crosslinking the olefinic random copolymer.Type: GrantFiled: December 24, 2003Date of Patent: January 3, 2006Assignee: JSR CorporationInventors: Kentarou Kanae, Toshiyuki Hayakawa, Minoru Tanaka, Akihiko Morikawa
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Patent number: 6943220Abstract: This invention relates to a composition comprising (A) an ethylene-?-olefin having 3 to 20 carbon atoms-non-conjugated polyene copolymer, (B) a specific fine-powdered silicic acid and/or a silicate having a specific surface area of 5 to 500 m2/g (BET adsorption amount: ISO 5794/1, Annex D), (C) at least one kind of ?,?-unsaturated carboxylic acid metal salts, (D) an organic peroxide, further optionally (E) one antioxidant selected from sulfur-containing antioxidants, phenolic antioxidants and amine antioxidants, and/or (F) sulfur, and this invention relates to a rubber product obtainable by crosslinking the above composition.Type: GrantFiled: March 25, 2002Date of Patent: September 13, 2005Assignee: Mitsui Chemicals, Inc.Inventors: Shinya Matsunaga, Shuichi Nonaka, Hidenari Nakahama, Masaaki Kawasaki
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Patent number: 6875804Abstract: The syndiotactic polystirene resin composition according to the present invention is superior in compatibility between a syndiotactic polystyrene and a rubber component and mechanical properties such as impact strength, in which a syndiotactic polystyrene-maleic anhydride (sPS-MA) and a hydrogenated styrene/butadiene/styrene-maleic anhydride (SEBS-MA) are employed as compatibilizers and a diamine compound is added as a coupling agent. The compatibilizers and coupling agents improve polarity of both the syndiotactic polystyrene and the rubber component and impact strength of the syndiotactic polystyrene composition.Type: GrantFiled: December 18, 2000Date of Patent: April 5, 2005Assignee: Samsung Atofina Co., Inc.Inventors: Xuequan Zhang, Jae Gon Lim
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Patent number: 6875820Abstract: Chlorinated olefin polymers prepared from olefin polymer base resins having I10 values of 0.05-0.8 dg/minute act as impact modifiers for vinyl chloride polymers under low to ambient temperature conditions. When vinyl chloride polymers are mixed with a preferred class of the chlorinated polymers, having chlorine contents of 20-30 percent by weight, compositions that exhibit short fusion times and low fusion temperatures are produced.Type: GrantFiled: April 18, 2001Date of Patent: April 5, 2005Assignee: DuPont Dow Elastomers LLCInventors: Mark Thomas Berard, Virginia Hayes Guffey, Gary Robert Marchand
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Patent number: 6845797Abstract: A tire comprising a tread, where said tread includes a vulcanized rubber, where said vulcanized rubber includes from about 0.5 to about 40 weight percent epoxidized rubber; from about 1 to about 35 parts by weight of a functionalized polyolefin per 100 parts by weight of said vulcanized rubber; and from about 1 to about 100 parts by weight silica per 100 parts by weight of said vulcanized rubber.Type: GrantFiled: October 11, 2002Date of Patent: January 25, 2005Assignee: Bridgestone CorporationInventors: Chenchy Jeffrey Lin, William L. Hergenrother
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Patent number: 6787586Abstract: A novel and improved EPDM formulation for a solid propellant rocket motor is described wherein hexadiene EPDM monomer components are replaced by alkylidene norbornene components, and, with appropriate adjustment of curing and other additives, functionally required rheological and physical characteristics are achieved with the desired compatibility with any one of a plurality of solid filler materials, e.g., powder silica, carbon fibers or aramid fibers, and with appropriate adhesion and extended storage or shelf-life characteristics.Type: GrantFiled: December 3, 2002Date of Patent: September 7, 2004Assignee: Alliant Techsystems Inc.Inventors: David G. Guillot, Albert R. Harvey
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Patent number: 6764985Abstract: This invention aims to provide lubricating oil compositions excellent in low-temperature properties, oxidation stability, lubricity at high temperatures and fuel efficiency and also in handling properties at low temperatures, and a viscosity modifier for lubricating oil employable in said lubricating oil compositions. The viscosity modifier for lubricating oil comprises an ethylene/&agr;-olefin copolymer (B) composed of: (i) ethylene, (ii) an &agr;-olefin of 3 or more carbon atoms, and (iii) a higher &agr;-olefin of 4 to 20 carbon atoms wherein the carbon number of (iii) is larger than that of (ii) by one or more, and the ethylene/&agr;-olefin copolymer (B) has the following properties (b-1) and (b-2): (b-1) a content of ethylene (i) is in the range of 40 to 80% by weight, a content of the &agr;-olefin of 3 or more carbon atoms (ii) is in the range of 15 to 59% by weight, and a content of the higher &agr;-olefin of 4 to 20 carbon atoms (iii) is in the range of 0.Type: GrantFiled: January 10, 2002Date of Patent: July 20, 2004Assignees: Mitsui Chemicals, Inc., The Lubrizol CorporationInventors: Keiji Okada, Ryousuke Kaneshige
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Patent number: 6765067Abstract: A sound insulating composite material contains (a) a crosslinked polymer containing 100 parts by weight of an ethylene-propylene rubber, 20-100 parts by weight of a polyethylene, and 100-200 parts by weight of a polypropylene; and (b) an inorganic filler in an amount of 200-500 parts by weight relative to 100 parts by weight of the ethylene-propylene rubber. The crosslinked polymer is prepared by a dynamic crosslinking of the ethylene-propylene rubber with the polyethylene and the polypropylene in the presence of an organic peroxide. The sound insulating composite material can be produced by (a) preparing a mixture containing the ethylene-propylene rubber, the polyethylene, the polypropylene, and the organic peroxide; and (b) kneading the mixture while the mixture is in a melted condition, thereby generating the dynamic crosslinking.Type: GrantFiled: March 27, 2002Date of Patent: July 20, 2004Assignee: Kinugawa Rubber Ind. Co., Ltd.Inventor: Hirotsugu Yamanaka
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Publication number: 20040132912Abstract: An organic peroxide vulcanized elastomer having a tack free or low tack surface is prepared under open surface conditions by curing a composition comprising a solid elastomer, an organic peroxide initiator, and a metal carboxylate. The metal carboxylate may be dissolved in a cross-linking coagent and then blended with the elastomer prior to open surface curing. Examples of the open surface molding methods include hot air, steam, salt bath, and sand bath.Type: ApplicationFiled: July 23, 2003Publication date: July 8, 2004Inventor: Clay B. McElwee
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Patent number: 6745796Abstract: A hydrogen fuel transporting hose for a fuel cell powered vehicle having a laminar structure includes at least one inner rubber layer, at least one reinforcing layer, and at least one outer rubber layer, which layers are laminated integrally with one another in the order of description in a radially outward direction of the hose. Each of the inner and outer rubber layers are obtained by vulcanizing a rubber composition including a rubber material selected from the group consisting of a halogenated butyl rubber material, and a blend of a halogenated butyl rubber material and a butyl rubber material. The vulcanized rubber includes a filler having a layered crystal structure and is vulcanized with one of a peroxide vulcanizing agent and a resin vulcanizing agent.Type: GrantFiled: February 28, 2003Date of Patent: June 8, 2004Assignee: Tokai Rubber Industries, Ltd.Inventors: Ayumu Ikemoto, Ryo Hirai
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Patent number: 6743862Abstract: The crosslinkable rubber composition is crosslinkable at room temperature, has a gelation time at room temperature of 30 days or less, and can prepare a crosslinked rubber sheet by crosslinking the composition at room temperature, wherein the crosslinked rubber sheet has a tensile elongation of 20% or more, and is free of cracks after treatment at 40° C. in a 50 pphm ozone concentration for 96 hr. Specifically, it comprises an ethylene/&agr;-olefin/non-conjugated polyene random copolymer rubber comprising a norbornene compound having a specific vinyl end group, an SiH group-containing compound, which has at least two SiH groups in one molecule, and optionally a platinum catalyst, a reaction inhibitor and/or a silane-coupling agent. The sealing, potting and coating materials and adhesives of the present invention comprise the above rubber composition.Type: GrantFiled: February 19, 2002Date of Patent: June 1, 2004Assignee: Mitsui Chemicals, Inc.Inventors: Takashi Hakuta, Mitsunao Arino, Yoshiharu Kikuchi, Masaaki Kawasaki
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Patent number: 6737480Abstract: A low-contaminative hose which permits a fluid to be passed through with minimized fluid contamination, and a rubber composition used to produce such a hose. The low-contaminative hose is formed from the rubber composition that includes, as essential components, at least one rubber selected from an ethylene-propylene-diene terpolymer, an ethylene-propylene copolymer and a silicone rubber, a peroxide vulcanizing agent, and a filler having a laminar crystal structure.Type: GrantFiled: September 4, 2002Date of Patent: May 18, 2004Assignee: Tokai Rubber Industries, Ltd.Inventors: Hidehito Ikeda, Ayumu Ikemoto, Yoshio Okado
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Patent number: 6730747Abstract: In accordance with the present invention, there is provided a novel composition of matter having the formula: wherein Ra, Rb, Rc, Rd and Re are independently selected from the group consisting of H, alkyl groups and substituted alkyl groups having about 1 to 106 carbon atoms, alkenyl groups and substituted alkenyl groups having about 3 to 106 carbon atoms, wherein the substituents on the alkyl and/or alkenyl groups are selected from the group consisting of alkoxy, halogen, CN, OH, HO(CH2CH2O)x (X=1-10), acyl, acyloxy and aryl substituents.Type: GrantFiled: January 4, 2000Date of Patent: May 4, 2004Assignee: Infineum USA L.P.Inventor: Stanley J. Brois
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Publication number: 20040006179Abstract: A cured elastomeric rubber composition with a reduced coefficient of friction and a relatively high surface energy is disclosed. The composition comprises an elastomeric rubber with polar functional groups grafted to the polymer backbone. The polar functional groups can include amide, amine urethane, ester or silane functional groups. The elastomeric rubber may be any relatively non-polar elastomeric rubber such as EPDM or polyisoprene. Also incorporated into the rubber composition are various rubber additives including for example, carbon black, processing oils, curatives, and clay filler. The incorporation of various functional groups in the rubber compositions effectively reduces the coefficient of friction of the resulting cured rubber component.Type: ApplicationFiled: July 1, 2002Publication date: January 8, 2004Applicant: Cooper Technology Services LLCInventor: Hans-Joachim Graf
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Patent number: 6673871Abstract: Elastomeric articles, such as gloves and condoms, are disclosed including a process for making the articles. The elastomeric articles produced according to the present invention are made from a synthetic polymer. During production of the articles, the polymer is cross-linked using a metal oxide as a cross-linking agent. In one embodiment, the polymer is cross-linked without using conventional sulfur-containing cross-linking agents or accelerators.Type: GrantFiled: December 21, 2000Date of Patent: January 6, 2004Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Derek Warneke, Jali Williams
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Patent number: 6670426Abstract: An olefin thermoplastic elastomer containing an olefin random copolymer formed by copolymerizing ethylene, an &agr;-olefin having 3 to 10 carbon atoms and an unsaturated monomer having a functional group, and optionally a non-conjugated diene, and metal ions crosslinking the olefin random copolymer, has the same or similar rubber elasticity, flexibility and molding and processability as the conventional olefin thermoplastic elastomers, and has good mechanical properties, wear resistance, in particular scratch resistance.Type: GrantFiled: February 10, 2003Date of Patent: December 30, 2003Assignee: JSR CorporationInventors: Kentarou Kanae, Akihiko Morikawa, Hideo Nakanishi, Shoei Tsuji
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Patent number: 6610787Abstract: The present invention relates to a thermoplastic resin composition comprising a rubber-reinforced thermoplastic resin as component (A) and an ethylene-&agr;-olefin copolymer having a Mooney viscosity (ML1+4, 100° C.) of 40 to 110 as component (B), the amount of component (B) being 1 to 70 parts by weight based on 100 parts by weight of component (A).Type: GrantFiled: June 13, 2002Date of Patent: August 26, 2003Assignee: Techno Polymer Co., Ltd.Inventors: Shinji Isoda, Narito Ishiga, Hironari Muraki, Yuuji Nakagawa
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Patent number: 6608144Abstract: The invention provides an ethylene-&agr;-olefin-unconjugated polyene random copolymer rubber having hydrolyzable silyl groups in the molecule, which is crosslinkable with air-borne moisture at room temperature and is not only useful for resin modification, but also applicable as elastic sealants and adhesives, and a method for preparing the same.Type: GrantFiled: March 23, 2001Date of Patent: August 19, 2003Assignees: Shin-Etsu Chemical Co., Ltd., Mitsi Chemicals, Inc.Inventors: Tsutomu Nakamura, Takeo Yoshida, Akira Yamamoto, Takashi Hakuta, Yoshiharu Kikuchi, Masaaki Kawasaki
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Patent number: 6606852Abstract: A rocket motor insulation including an elastomer base polymer is improved in its processability by the addition of silica particles treated with a hydrophobic coating. The insulation also preferably includes a metallic coagent cross-linker, which when used in combination with the hydrophobic silica particles increases the tear strength and the elasticity of the insulation, while at the same time not adversely affecting the bonding characteristics of the insulation.Type: GrantFiled: July 11, 2000Date of Patent: August 19, 2003Assignee: Alliant Techsystems Inc.Inventors: Albert R. Harvey, John W. Ellertson
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Publication number: 20030134987Abstract: The present invention relates to a method for evaluating the crosslink degree of a vulcanized sample in real time during a vulcanization process or diagnosing the electrical properties of the sample after the completion of the vulcanization process, and then determining an optimal vulcanization time and an optimal content of each constituent gradient of a composition for vulcanization that optimize the properties of the composition according to the vulcanization conditions, for the sake of improving the properties of the vulcanized sample prepared from a polymer by vulcanization at a high temperature.Type: ApplicationFiled: December 18, 2002Publication date: July 17, 2003Applicant: Korea Kumho Petrochemical Co., Ltd.Inventors: Jee-Hwan Jang, Hyun-Kyung Sung, Hun-Jong Baik, Ho-Sull Lee
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Patent number: 6566420Abstract: A novel and improved EPDM formulation for a solid propellant rocket motor is described wherein hexadiene EPDM monomer components are replaced by alkylidene norbornene components and with appropriate adjustment of curing and other additives functionally-required rheological and physical characteristics are achieved with the desired compatibility with any one of a plurality of solid filler materials, e.g. powder silica, carbon fibers or aramid fibers, and with appropriate adhesion and extended storage or shelf life characteristics.Type: GrantFiled: January 12, 2000Date of Patent: May 20, 2003Assignee: Alliant Techsystems Inc.Inventors: David G. Guillot, Albert R. Harvey
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Patent number: 6541575Abstract: According to the present invention, provided is an industrially advantageous process for producing an epoxidized polymer, with safety and efficiency, wherein the epoxidation of a polymer having an olefinic carbon-carbon double bond is effected under the presence of substantially no alkali metal ion by adding an aqueous solution containing (i) ammonium tungstate and/or tungstophosphoric acid and (ii) phosphoric acid, in which the amount of (ii) phosphoric acid is not less than 0.25 moles relative to 1 gram atom of tungsten atom contained in the (i) ammonium tungstate and/or tungstophosphoric acid, and an aqueous hydrogen peroxide, separately to a solution of said polymer and a quaternary ammonium salt in an organic solvent immiscible with water.Type: GrantFiled: December 21, 2001Date of Patent: April 1, 2003Assignee: Kuraray Co., Ltd.Inventors: Taketoshi Okuno, Hideharu Iwasaki, Takuo Tsuruta
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Publication number: 20030050405Abstract: A low-contaminative hose which permits a fluid to be passed through with minimized fluid contamination, and a rubber composition used to produce such a hose. The low-contaminative hose is formed from the rubber composition that includes, as essential components, at least one rubber selected from an ethylene-propylene-diene terpolymer, an ethylene-propylene copolymer and a silicone rubber, a peroxide vulcanizing agent, and a filler having a laminar crystal structure.Type: ApplicationFiled: September 4, 2002Publication date: March 13, 2003Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Hidehito Ikeda, Ayumu Ikemoto, Yoshio Okado
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Publication number: 20030045646Abstract: A process for preparing a composition including microspheres comprising adding a rubber polymer, a sulfur-based curing agent, and microspheres to a rubber mill mixer and mixing the added materials in the rubber mix to form a composition, wherein the composition comprises less than about 40% solvent. The process is useful for preparing formulations that can be used with printing blanket compressible layers. The microspheres are not adversely affected by the mixing.Type: ApplicationFiled: July 10, 2002Publication date: March 6, 2003Inventors: Ronald M. Buono, Joseph Carl Kalchbrenner, Stefano Carletti, Giorgio Donida Maglio, Gianpietro Invernizzi
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Patent number: 6525142Abstract: The invention herein relates to unsaturated monohydroxylated polydiene polymers which are comprised of at least two polymerizable ethenically unsaturated hydrocarbon monomers wherein at least one is a diene monomer which yields unsaturation suitable for epoxidation. The invention also encompasses partially hydrogenated and/or epoxidized derivatives of these novel monohydroxylated polydiene polymers. The preferred monohydroxylated polydiene polymer of the present invention has a structural formula (HO)x—A—Sz—B—(OH)y wherein A and B are polymer blocks which may be homopolymer blocks of conjugated diolefin monomers, copolymer blocks of conjugated diolefin monomers, or copolymer blocks of diolefin monomers and monoalkenyl aromatic hydrocarbon monomers. These polymers may contain up to 60% by weight of at least one vinyl aromatic hydrocarbon, preferably styrene.Type: GrantFiled: March 7, 1995Date of Patent: February 25, 2003Assignee: Kraton Polymers U.S. LLCInventors: James Robert Erickson, David John St. Clair, Michael Alan Masse
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Patent number: 6500508Abstract: A flame-retardant resin composition for insulated wires, shielded wires and insulating tubes which are used in the field requiring high-frequency current transmission, for example, in the field of high-density wiring of internal circuits in electronic appliances. The composition comprises (a) a thermoplastic polyolefinic resin having a density of smaller than 0.89 g/cm3, which is prepared by copolymerizing ethylene and a non-polar &agr;-olefin in the presence of a single-site metallocene catalyst, (b) a halogen-containing flame retardant, and (c) zinc oxide. After crosslinking, the composition is used in forming an insulating coating for insulated wires and shielded wires, and in forming insulating tubes.Type: GrantFiled: February 12, 2001Date of Patent: December 31, 2002Assignee: Sumitomo Electric Fine Polymer, Inc.Inventors: Hiroshi Hayami, Yumi Kawabata, Satoshi Ebina
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Patent number: 6476153Abstract: Process for producing a hydrogenated &agr;-olefin-dicyclopentadiene copolymer. The process includes a step of distilling of unreacted dicyclopentadiene or tetrahydrodicyclopentadiene which is a hydrogenated product of unreacted dicyclopentadiene from a mixture containing &agr;-olefin-dicyclopentadiene copolymer or its hydrogenated product in the presence of a high-boiling hydrocarbon solvent having a boiling point of 195 to 300° C. and an ignition point of 260° C. or more. Method for melt molding the hydrogenated &agr;-olefin-dicyclopentadiene copolymer is also proposed.Type: GrantFiled: March 9, 2001Date of Patent: November 5, 2002Assignee: Teijin LimitedInventors: Kiyonari Hashidzume, Kaoru Iwata
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Patent number: 6475475Abstract: Combinations of polymer compounds and hair treatment compositions containing them are described, which have improved film-forming properties and improved hair-fixing properties, particularly increased elasticity of the polymer film or the treated hair. The polymer compound combinations include at least one terpolymer of vinyl pyrrolidone, vinyl caprolactam and basic acryl amide monomer and at least one anionic or anionizable polymer with anionic or anionizable groups.Type: GrantFiled: December 4, 2000Date of Patent: November 5, 2002Assignee: Wella AktiengesellschaftInventors: Susanne Birkel, Michael Lede
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Patent number: 6468948Abstract: Polymers (including copolymers) derived from one or more olefins, such including ethylene and C3-C20 &agr;-olefins such as propylene and 1-butene, which polymers have (a) an average ethylene sequence length, ESL, of from, about 1.0 to less than about 3.0; (b) an average of at least 5 branches per 100 carbon atoms of the polymer chains comprising the polymer; (c) at least about 50% of said branches being methyl and/or ethyl branches; (d) at least about 30% of said polymer chains terminated with a vinyl or vinylene group; (e) a number average molecular weight, Mn, of from about 300 to about 15,000 when the polymer is intended for dispersant or wax crystal modifier uses and up to about 500,000 where intended for viscosity modifier uses; and (f) substantial solubility in hydrocarbon and/or synthetic base oil. The polymers are produced using late-transition-metal catalyst systems and, preferably, inexpensive, highly dilute refinery or steam cracker feed streams that have undergone only limited clean-up steps.Type: GrantFiled: July 21, 1999Date of Patent: October 22, 2002Assignee: Infineum USA L.P.Inventors: Albert Rossi, Jacob Emert, David Edward Gindelberger, Jon Edmond Stanat, James Peter Stokes, Jaimes Sher
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Patent number: 6462140Abstract: In accordance with the present invention, there is provided a novel composition of matter having the formula: wherein Ra, Rb, Rc, Rd and Re are independently selected from the group consisting of H, alkyl groups and substituted alkyl groups having about 1 to 106 carbon atoms, alkenyl groups and substituted alkenyl groups having about 3 to 106 carbon atoms, wherein the substituents on the alkyl and/or alkenyl groups are selected from the group consisting of alkoxy, halogen, CN, OH, HO(CH2CH2O)x (X=1-10), acyl, acyloxy and aryl substituents.Type: GrantFiled: February 9, 2001Date of Patent: October 8, 2002Assignee: Exxon Research & Engineering Co.Inventor: Stanley J. Brois
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Patent number: 6461719Abstract: An agricultural covering material made of a fluorine-containing polymer film having a dynamic viscoelastic modulus of from 1 to 70 kg/mm2, a tensile strength of from 1.5 to 5.0 kg/mm2, a specific gravity of from 1.0 to 2.0 and a contact angle with water of at most 106°.Type: GrantFiled: December 22, 2000Date of Patent: October 8, 2002Assignee: Asahi Glass Company LimitedInventors: Naomi Ichikuni, Toru Ishida, Seitoku Kaya, Atsushi Funaki, Teruo Takakura
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Publication number: 20020132929Abstract: There is disclosed a rubber composition comprising:Type: ApplicationFiled: February 18, 2002Publication date: September 19, 2002Inventors: Marc Weydert, Wolfgang Lauer, Friedrich Visel, Rene Jean Zimmer, Francois Kayser
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Patent number: 6441100Abstract: A valve joint of a dispensing valve of a fluid product dispensing device, said joint being intended to come into contact with a fluid product comprising an aerosol propellant of the HFC-134a or HFC-227 type, with or without alcohol, characterised in that said joint comprises a surface subjected to a surface treatment, said surface treatment being adapted to lower the friction coefficient of the joint so as to reduce the risks of the valve blocking and/or to create a barrier on the joint surface so as to reduce the level of extractables from said joint.Type: GrantFiled: November 9, 2001Date of Patent: August 27, 2002Assignee: Valois S.A.Inventor: Patrice Leone
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Publication number: 20020086951Abstract: A valve joint of a dispensing valve of a fluid product dispensing device, said joint being intended to come into contact with a fluid product comprising an aerosol propellant of the HFC-134a or HFC-227 type, with or without alcohol, characterized in that said joint comprises a surface subjected to a surface treatment, said surface treatment being adapted to lower the friction coefficient of the joint so as to reduce the risks of the valve blocking and/or to create a barrier on the joint surface so as to reduce the level of extractables from said joint.Type: ApplicationFiled: November 9, 2001Publication date: July 4, 2002Applicant: VALOIS S.A.Inventor: Patrice Leone
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Patent number: 6414070Abstract: Nanocomposite compositions comprising organically modified clays and polyolefins or copolymers containing repeat units derived from olefins have flame retardant or flame resistant properties. Sheets and laminates of the nanocomposite can be utilized wherever flame retardant properties are desired.Type: GrantFiled: March 8, 2000Date of Patent: July 2, 2002Assignee: Omnova Solutions Inc.Inventors: Charles Kausch, Anthony Verrocchi, John E. Pomeroy, III, Kristen M. Peterson, Peter F. Payne
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Patent number: 6413652Abstract: This invention relates to polyolefin alloys that are receptive to metal plating. These compositions also have enhanced properties and are easily processed into articles by various molding methods. The blends of the invention preferably include polyolefin homopolymers or copolymers, acrylonitrile-butadiene-styrene polymers, and styrenic block copolymers. These blends have excellent platability and superior physical properties including enhanced rigidity, thoughness, and dimensional stability.Type: GrantFiled: May 5, 2000Date of Patent: July 2, 2002Assignee: Solvay Engineered PolymersInventors: Ruidong Ding, Satchit Srinivasan, Scott Matteucci
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Publication number: 20020077427Abstract: The first invention provides a process for preparing an epoxidized organic polymer by dispersing or suspending a solid organic polymer in an organic solvent and epoxidizing the dispersed or suspended polymer with a peroxide. The epoxidized polymer thus obtained is usable for coating materials, resin modifiers, rubber modifiers or adhesives, thus being extremely useful.Type: ApplicationFiled: November 16, 2001Publication date: June 20, 2002Inventor: Takai Hideyuki
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Patent number: 6403713Abstract: The present invention provides a novel improved method for crosslinking an isoprene-isobutylene rubber, an ethylene-propylene-diene rubber containing ethylidenenorbornene as an unsaturated component, or a mixture of an isoprene-isobutylene rubber and an ethylene-propylene-diene rubber containing ethylidenenorbornene as an unsaturated component, which method comprises thermally crosslinking the above rubber or rubber mixture using an alkylphenol-formaldehyde resin, 3-(N-salicyloyl)amino-1,2,4-triazole and, as necessary, a hydrazide compound. The method can produce a crosslinked rubber product low in compression set and corrosivity to metals, without using any halogen compound as a crosslinking co-agent.Type: GrantFiled: February 14, 2001Date of Patent: June 11, 2002Inventor: Masao Onizawa
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Patent number: 6376620Abstract: A process for improving the green strength of ethylene/&agr;-olefin/diene polymers is described comprising (A) selecting an ethylene/&agr;olefin/diene polymer having a Mooney viscosity at 125 C up to about 80 and a percent gel (% gel) up to about 30 percent and (B) partially crosslinking the ethylene/&agr;-olefin/diene polymer selected in step (A) to make a modified ethylene/&agr;-olefin/diene polymer satisfying the equations MV≦100 and MV ≤ ⁢ 100 W ≤ ⁢ ( MS 2 - MS 1 MS 1 ) wherein MV is the Mooney viscosity of the modified polymer, MS1 is the melt strength in centiNewtons of the polymer selected in step (A) at 110 C, when formulated according to ASType: GrantFiled: January 8, 2001Date of Patent: April 23, 2002Assignee: The Dow Chemical CompanyInventors: Michael E. Rowland, Che I. Kao
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Publication number: 20020042477Abstract: The invention comprises polymers which have been functionalized so as to be able to chemically react with polyamines to form adducts containing at least one or more groups consisting of amino, amido, imino, imido, or imidazloyl. Furthermore, the invention teaches processes to prepare these adducts by solution, melt or in-situ methods. A further embodiment of the invention pertains to the use of polyolefin plastomers or elastomers, elastomeric polyethylene-polypropylene, compositions or interpolymers of styrenes olefins, which have been chemically modified so that they react with polyamines to confer to asphalt significantly improved desired chemical and physical properties.Type: ApplicationFiled: October 3, 2001Publication date: April 11, 2002Inventors: Murray Jelling, Richard F. Stockel, James Henderson Collins, Mohamed Emam Labib
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Patent number: 6346577Abstract: The heat-resistant rubber composition of the invention is a vulcanizable composition comprising 100 parts by weight of a specific ethylene-&agr;-olefin-nonconjugated polyene copolymer rubber (A) composed of ethylene, an &agr;-olefin or 3 to 20 carbon atoms and a nonconjugated polyene which is a vinyl end group-containing norbornene compound, 0.2 to 5 parts by weight of an amine type anti-aging agent (C) and/or a hindered phenol type anti-aging agent (D), 1 to 10 parts by weight of a sulfur type anti-aging agent (E) and an organic peroxide (B). This heat-resistant rubber composition can provide a vulcanized rubber molded product showing not only excellent mechanical properties and electrical properties and but also prominently high thermal aging resistance.Type: GrantFiled: February 28, 2000Date of Patent: February 12, 2002Assignee: Mitsui Chemicals INCInventors: Takashi Hakuta, Tetsuo Tojo, Masaaki Kawasaki, Mikio Hosoya
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Patent number: 6344525Abstract: A thermoplastic resin composition of the present invention comprises (A) 5-45 parts by weight of polypropylene resin, (B) 10-50 parts by weight of ethylene-propylene-diene rubber, (C) 5-25 parts by weight of an ethylene copolymer, (D) 15-45 parts by weight of an ionomer, (E) 2-10 parts by weight of phenol cross-linking agent and 3-15 parts by weight of a cross-linking accelerator per 100 parts by weight of the (B), and (F) 3-15 parts by weight of epoxy polymer based on 100 parts by weight of the (D), wherein (A+B) is 30-40 parts by weight and (C+D) is 20-70 parts by weight. The thermoplastic resin composition is excellent in impact resistance at low temperature, heat resistance, weather resistance, scratch resistance and the vacuum formability, and is thus useful for the interior sheathing of an automobile.Type: GrantFiled: September 20, 2000Date of Patent: February 5, 2002Assignee: Hyundai Motor CompanyInventors: Tae Seung Lee, Kie Youn Jeong, Byung Yun Lim, Min Jae Hwang
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Patent number: 6337134Abstract: A process for preparing an epoxidized organic polymer by dispersing or suspending a solid organic polymer in an organic solvent and epoxidizing the dispersed or suspended polymer with a peroxide. The epoxidized polymer thus obtained is usable for coating materials, resin modifiers, rubber modifiers or adhesives, thus being extremely useful. The epoxidized organic polymer is useful to prepare a thermoplastic resin composition having improved mechanical strength, and comprising a thermoplastic resin, an epoxidized EPDM and an acid anhydride. The thermoplastic composition can be used to prepare a primer composition including a 100 parts by weight of an epoxidized EPDM and 50 to 70 parts by weight of a product of chlorination of a polyolefin modified with an unsaturated carboxylic acid or an anhydride thereof.Type: GrantFiled: October 26, 1999Date of Patent: January 8, 2002Assignee: Daicel Chemical Industries LtdInventor: Hideyuki Takai
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Patent number: RE37527Abstract: A heat-resistant rubber composition of the invention is a vulcanizable composition comprising a specific ethylene-&agr;-olefin-nonconjugated polyene copolymer rubber (A) and an organic peroxide (B). This heat-resistant composition has high crosslinking efficiency given by the organic peroxide and high modulus, and can provide a vulcanized rubber molded product of excellent resistance to environmental deterioration such as thermal aging resistance. The other heat-resistant rubber composition of the invention is a vulcanizable composition comprising 100 parts by weight of a specific ethylene-&agr;-olefin-nonconjugated polyene copolymer rubber (A) composed of ethylene, an &agr;-olefin or 3 to 20 carbon atoms and a nonconjugated polyene which is a vinyl end group-containing norbornene compound, 0.2 to 5 parts by weight of an amine type anti-aging agent (C) and/or a hindered phenol type anti-aging agent (D), 1 to 10 parts by weight of a sulfur type anti-aging agent (E) and an organic peroxide (B).Type: GrantFiled: March 29, 2000Date of Patent: January 22, 2002Assignee: Mitsu ChemicalsInventors: Takashi Hakuta, Tetsuo Tojo, Masaaki Kawasaki, Mikio Hosoya