Patents Examined by Carman J. Seccuro
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Patent number: 5585172Abstract: A polymeric composition particularly suitable for obtaining heat sealable soft polypropylene fibers comprises a propylene homopolymer modified with a propylene homopolymer having an isotacticity index higher than 80, an ethylene-propylene copolymer insoluble in xylene at 23.degree. C. and a propylene copolymer soluble in xylene at 23.degree. C.Type: GrantFiled: March 6, 1996Date of Patent: December 17, 1996Assignee: Moplefan S.p.A.Inventor: Giampiero Barsotti
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Patent number: 5585431Abstract: A thermoplastic elastomer powder composition for powder molding, comprising 100 parts by weight of the following thermoplastic elastomer powder (A) and 0.05 to 20 parts by weight of a fine powder having an average particle diameter of 30 .mu.m or less:(A) (i) a powder of a thermoplastic elastomer comprising a composition composed of an ethylene-.alpha.-olefin copolymer rubber and a polyolefin resin or (ii) a powder of a thermoplastic elastomer comprising a partially crosslinked composition composed of an ethylene-.alpha.-olefin copolymer rubber and a polyolefin resin, the thermoplastic elastomer powder having a complex dynamic viscosity .eta.*(1), as measured at a frequency of 1 radian/sec and at 250.degree. C., of 1.5.times.10.sup.5 poise or less and a Newtonian viscosity index n, calculated from the following formula by using the above-mentioned complex dynamic viscosity .eta.*(1) and the complex dynamic viscosity .eta.*(100) measured at a frequency of 100 radian/sec of 0.67 or less:n=(log.eta.*(1)-log.eta.Type: GrantFiled: October 7, 1992Date of Patent: December 17, 1996Assignee: Sumitomo Chemical Company, LimitedInventors: Toshio Igarashi, Sueharu Shinohara, Masayuki Tatsumi, Tadashi Hikasa, Hiroaki Mendori
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Patent number: 5582923Abstract: An ethylene polymer extrusion composition having high draw down and substantially reduced neck-in, a process for making such a composition and a process of using such a composition to prepare extrusion coatings, extrusion profiles and extrusion cast films are disclosed. The ethylene polymer extrusion composition is made of 75-95 weight percent of at least one ethylene .alpha.-olefin interpolymer and 5-25 weight percent of at least one high pressure ethylene polymer characterized as having high melt strength and a broad, bimodal molecular weight distribution. In profiles, coatings or films, the composition can be used as sealant, adhesive or abuse resistance layers.Type: GrantFiled: November 23, 1994Date of Patent: December 10, 1996Assignee: The Dow Chemical CompanyInventors: Lawrence T. Kale, Pradeep Jain, David C. Kelley, Deepak R. Parikh, Sharon L. Baker, Osborne K. McKinney
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Patent number: 5578681Abstract: Curable elastomeric blends of fluoroelastomer and ethylene copolymer elastomer in which at least one of the fluoroelastomer and ethylene copolymer elastomer contains a cure site monomer.Type: GrantFiled: April 3, 1995Date of Patent: November 26, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventor: David L. Tabb
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Patent number: 5576083Abstract: High density polyethylene resins are produced for use in manufacturing blow-molded, pliable containers. Combinations of (1) injection molding grade of HDPE and extrusion coating grade of LDPE or (2) blow-molding grade of HDPE and extrusion-coating grade of LDPE are useful to produce the resins of this invention.Type: GrantFiled: November 3, 1994Date of Patent: November 19, 1996Assignee: Kraft Foods, Inc.Inventor: Surendra H. Agarwal
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Patent number: 5573856Abstract: A polypropylene composition containing:(A) 10-95 parts by weight of a crystalline polypropylene,(B) 5-90 parts by weight of an ethylene-propylene copolymer rubber,(C) 1-30 parts by weight, per 100 parts by weight of the mixture of said crystalline polypropylene and ethylene-propylene copolymer rubber, of a hydroxyl group-containing propylene oligomer, andoptionally an inorganic filler in an amount of up to 40 parts by weight per 100 parts by weight of the mixture of said crystalline polypropylene and ethylene-propylene copolymer rubber and a suitable amount of an additive or auxiliary, has an improved compatibility with paint-coatings, and the shaped article formed from said composition can easily be paint-coated by simply treating it with water or an organic solvent instead of laying a primer layer onto the article before applying a paint thereon.Type: GrantFiled: May 23, 1995Date of Patent: November 12, 1996Assignee: Sumitomo Chemical Company LimitedInventors: Hideo Shinonaga, Satoru Sogabe
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Patent number: 5574087Abstract: A molded protective strip for automobiles is prepared by the gas injection molding of a resin composition which comprises (A) 55 to 75% by weight of polypropylene, (B) 18 to 30% by weight of ethylene-propylene copolymer rubber, and (C) 10 to 20% by weight of talc, has a ratio (MI).sub.PP /(MI).sub.EPR of 10 or less, and a polydispersity index of 20 to 100. (MI).sub.PP and (MI).sub.EPR represents melt indices of the polypropylene of component (A) and the ethylene-propylene copolymer rubber of component (B), respectively. The polydispersity index is calculated from a frequency-storage modulus curve obtained with a composition consisting of components (A), (B), and (C) alone at the temperature of 230.degree. C. The molded protective strip can be prepared without using a vinyl chloride resin, shows almost no heat shrinkage, has a small coefficient of linear expansion, is excellent in dimensional stability, and exhibits excellent appearance.Type: GrantFiled: March 29, 1995Date of Patent: November 12, 1996Assignees: Idemitsu Petrochemical Co., Ltd., Honda Giken Kogyo Kabushiki KaishaInventors: Yutaka Kobayashi, Takayuki Onda, Kenji Hamabe, Osamu Aoki
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Patent number: 5569716Abstract: A rubber composition composed of (A) a hydrocarbon rubber, (B) a vulcanizing agent and/or crosslinking agent, and (C) a hydrogenated petroleum resin having a bromine number not greater than 10 (g/100 g). The rubber composition exhibits improved processability over hydrocarbon rubber used alone but has no bad influence on the physical properties and heat resistance of its vulcanizate. It is free from any trouble involved in crosslinking with a peroxide which is often used for EPR and EPDM. Therefore, it will find general use in the rubber industry.Type: GrantFiled: March 17, 1995Date of Patent: October 29, 1996Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Kohei Okamoto, Kyoichi Inoue, Takayoshi Kutuno
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Patent number: 5567776Abstract: Provided are cycloolefin copolymer compositions comprising a hydrocarbon elastomer component substantially free from a polymerizable double bond and a cycloolefin random copolymer component obtained by copolymerization of an .alpha.-olefin of at least 2 carbon atoms and a cycloolefin in the presence of said hydrocarbon elastomer component, said composition containing said hydrocarbon elastomer component in an amount of 1-50% by weight, and a method for preparing said cycloolefin copolymer compositions.Also provided are cycloolefin copolymer compositions comprising a hydrocarbon elastomer component having a polymerizable double bond and a cycloolefin copolymer component obtained by copolymerization of an .alpha.-olefin of at least 2 carbon atoms and a cycloolefin in the presence of said hydrocarbon elastomer component, said composition containing said hydrocarbon elastomer component in an amount of 1-50% by weight.Type: GrantFiled: May 8, 1995Date of Patent: October 22, 1996Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Yoichiro Tsuji, Yoshiharu Abe, Toshihiro Sagane, Toshimasa Takata
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Patent number: 5567777Abstract: Provided are cycloolefin copolymer compositions comprising a hydrocarbon elastomer component substantially free from a polymerizable double bond and a cycloolefin random copolymer component obtained by copolymerization of an .alpha.-olefin of at least 2 carbon atoms and a cycloolefin in the presence of said hydrocarbon elastomer component, said composition containing said hydrocarbon elastomer component in an amount of 1-50% by weight, and a method for preparing said cycloolefin copolymer compositions.Also provided are cycloolefin copolymer compositions comprising a hydrocarbon elastomer component having a polymerizable double bond and a cycloolefin copolymer component obtained by copolymerization of an .alpha.-olefin of at least 2 carbon atoms and a cycloolefin in the presence of said hydrocarbon elastomer component, said composition containing said hydrocarbon elastomer component in an amount of 1-50% by weight.Type: GrantFiled: January 26, 1996Date of Patent: October 22, 1996Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Yoichiro Tsuji, Yoshiharu Abe, Toshihiro Sagane, Toshimasa Takata
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Patent number: 5567772Abstract: Ionomer resins made by neutralizing acid copolymers with a high melt index, corresponding to a relatively low molecular weight, but which have been relatively highly neutralized, can be used, either alone or in blends with other ionomers, as materials for golf ball covers, without loss of key properties for that application. The materials have better flow and better processability than conventional ionomeric materials used for golf balls.Type: GrantFiled: December 28, 1994Date of Patent: October 22, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventors: John F. Hagman, Robert J. Statz
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Patent number: 5565524Abstract: The present invention provides a golf ball which is superior in hit feeling, control properties, flying performances and cut resistance. As the base resin of the cover of the golf ball, a heated mixture composed of (A) an ionomer resin or a mixture thereof, (B) a terpolymer resin of .alpha.-olefin, unsaturated carboxylate and unsaturated carboxylic acid and (C) a glycidyl group-containing .alpha.-olefinic copolymer resin is used.Type: GrantFiled: November 7, 1994Date of Patent: October 15, 1996Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Akihiko Hamada, Yoshikazu Yabuki, Yoshinori Sano
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Patent number: 5561195Abstract: Polymeric compositions based on Linear Low Density Polyethylene (LLDPE) comprising: (A) from 75 to 95% by weight of an ethylene copolymer with an .alpha.-olefin CH.sub.2 =CHR, wherein R is an alkyl radical having from 1 to 10 carbon atoms, and (B) from 5 to 25% by weight of a copolymer of propylene with ethylene and an .alpha.-olefin CH.sub.2 =CHR.sup.I, wherein R.sup.I is an alkyl radical having from 2 to 10 carbon atoms. Copolymer (B) is characterised by a relatively high insolubility in xylene. The polymeric compositions of the invention are endowed with improved processability and improved mechanical properties with respect to the LLDPE of the conventional type.Type: GrantFiled: January 20, 1995Date of Patent: October 1, 1996Assignee: Montell Technology Company bvInventors: Gabriele Govoni, Massimo Covezzi, Claudio Cometto
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Patent number: 5560992Abstract: Permanently soil resistant polymeric compositions that have fluorochemical dispersed throughout the polymer are prepared by melt extrusion of the fluorochemical with the desired polymer. Preferred polymers for extrusion with the fluorochemical are polyester, polypropylene, polyethylene, and polyamide.Type: GrantFiled: June 7, 1995Date of Patent: October 1, 1996Assignee: Peach State Labs, Inc.Inventors: R. Richard Sargent, Jeffrey R. Alender
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Patent number: 5559188Abstract: In a golf ball comprising a cover around a core, the cover is formed of a resin blend of 10-60 parts by weight of a thermoplastic elastomer having a crystalline polyethylene block and 90-40 parts by weight of an ionomer resin. The ball is well controllable, highly repulsive, and resistant to scuffing upon iron shots and offers pleasant hitting feel.Type: GrantFiled: April 19, 1995Date of Patent: September 24, 1996Assignee: Bridgestone Sports Co., Ltd.Inventors: Yoshinori Egashira, Yasushi Ichikawa, Hideo Watanabe
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Patent number: 5556910Abstract: A polypropylene resin composition, which exhibits an excellent coating adherence, high rigidity, high impact strength at low temperatures, prominent heat resistance and excellent appearance of moldings as required for coatings on the exterior parts of automobiles even without effecting a treatment with trichloroethane as pretreatment step before coating and without a primer as undercoating and which can be baked at a temperature of 130.degree. C. or higher, comprises 15 to 92% by weight crystalline ethylene propylene block copolymer, 5 to 40% by weight ethylene propylene copolymer rubber, 1 to 15% by weight polypropylene oligomer containing hydroxyl group, and 2 to 30% by weight inorganic filler.Type: GrantFiled: October 18, 1994Date of Patent: September 17, 1996Assignee: Sumitomo Chemical Company Limited.Inventors: Hiroyuki Harada, Yuji Ikezawa, Susumu Kanzaki, Hideo Shinonaga, Satoru Sogabe
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Patent number: 5554694Abstract: Performance enhancing shoe components, and methods of making the same, comprising 1,4-polybutadiene and a rubber selected from the group consisting of natural rubber, synthetic isoprene rubber, polyisoprene, butadiene acrylonitrile rubber and ethylenepropylene diene modified rubber. The shoe components may be formed as shoe midsoles and parts of midsoles, shoe soles and parts of soles, shoe insoles and parts of insoles, and shoe inserts.Type: GrantFiled: March 23, 1995Date of Patent: September 10, 1996Inventor: William R. Crow
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Patent number: 5552199Abstract: This invention provides a melt-processable conductive fluoroplastic composition comprising a melt-processable, thermoplastic fluoropolymer component of interpolymerized units comprising those derived from vinylidene fluoride, a conductive particulate component comprising conductive carbon black particles, and a hydrocarbon polymer component. The composition is useful for making, for example by melt-processing, conductive shaped articles including tubing.Type: GrantFiled: September 2, 1994Date of Patent: September 3, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Thomas J. Blong, Claude Lavall ee
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Patent number: 5552482Abstract: A partially dynamically vulcanized or crosslinked thermoplastic polyolefin elastomer/uncrosslinked olefin polymer blend has improved extrusion performance. The uncrosslinked olefin polymer is selected from (1) a heterophasic olefin composition prepared by polymerization in at least two stages comprising (a) 10% to 50% by weight of a propylene homopolymer or a propylene copolymer, (b) 5% to 20% by weight of a semicrystalline, essentially linear ethylene copolymer fraction, and (c) 40% to 80% by weight of an ethylene copolymer fraction that is soluble in xylene at ambient temperature, (2) crystalline butene-1 homopolymer, and (3) a substantially amorphous ethylene/propylene or ethylene/butylene copolymer; or a substantially amorphous terpolymer of (a) ethylene, (b) propylene or butylene, and (c) a nonconjugated diene.Type: GrantFiled: September 8, 1995Date of Patent: September 3, 1996Assignee: Montell North America Inc.Inventor: Dominic A. Berta
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Patent number: RE35398Abstract: Heat shrinkable thermoplastic compositions are prepared by blending an ethylene copolymer resin with an EPDM rubber and dynamically vulcanizing the rubber. The ethylene copolymer resin is a copolymer of ethylene with an alkyl ester of an alpha, beta monoethylenically unsaturanated monocarboxylic acid as well as copolymers of ethylene with the acid per se. The preferred copolymer is ethylene-vinylacetate copolymer. Uncured rubber can be included in the composition.Type: GrantFiled: September 25, 1995Date of Patent: December 10, 1996Assignee: Advanced Elastomer Systems, L.P.Inventors: Donald R. Hazelton, Robert C. Puydak