Patents by Inventor Wai Y. Chow
Wai Y. Chow has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5376701Abstract: Compositions suitable for producing mineral fibre reinforced thermoplastic composite materials by the wet-laid process comprise mineral fibres, matrix polymer and a coupling agent. The fibres are silanized with reactive silane groups capable of reacting with the coupling agent, for example a maleic anhydride grafted polyolefin, to improve adhesion between the fibres and matrix polymer in the final composite product. The composition excludes components which hinder the reaction between the silane groups and the coupling agent.Type: GrantFiled: September 3, 1992Date of Patent: December 27, 1994Assignee: Exxon Chemical Patents Inc.Inventors: Wai Y. Chow, Michel Goguelin
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Patent number: 5130371Abstract: Disclosed herein are block and random graft copolymer compositions comprising a base polymer of crystalline polyolefin to which is grafted at least one side or end chain of a hydroxy-ended polylactone, the process for making said graft copolymer compositions, and use thereof in engineering thermoplastic resins.Type: GrantFiled: March 8, 1990Date of Patent: July 14, 1992Assignee: Exxon Chemical Patents Inc.Inventors: Y. Fujita, Donald N. Schulz, Wai Y. Chow, Jacques Horrion, Trazollah Ouhadi, Richard G. Austin, Angelo A. Montagna, Kenneth O. McElrath, Jay D. Audett
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Patent number: 4952631Abstract: A modifier composition is disclosed for compounding with a polyolefin to produce a resin from which cement adherent polyolefin fibers may be produced by conventional fiber forming methods. The modifier composition comprising a polyolefin resin modified to contain a reactive Si(IV) moeity. A preferred embodiment comprises the reaction product obtained from the high shear dry blending of an alkylamino alkoxysilane with an acid modified polyolefin, preferably gamma-aminopropyltriethoxysilane dry blended with maleated polypropylene. Such modifier composition when compounded in from about 1 to about 10 weight percent with a polyolefin, preferably polypropylene, provides a resin from which cement adherent fibers may be produced.Type: GrantFiled: August 4, 1988Date of Patent: August 28, 1990Assignee: Exxon Chemical Patents Inc.Inventors: James J. McAlpin, Wai Y. Chow
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Patent number: 4861812Abstract: A modified composition is disclosed for compounding with a polyolefin to produce a resin from which cement adherent polyolefin fibers may be produced by conventional fiber forming methods. The modifier composition comprising a polyolefin resin modified to contain a reactive Si(IV) moiety. A preferred embodiment comprises the reaction product obtained from the high shear dry blending of an alkylamino alkoxysilane with an acid modified polyolefin, preferably gamma-aminopropyltriethoxysilane dry blended with meleated polypropylene. Such modifier composition when compounded in from about 1 to about 10 weight percent with a polyolefin, preferably polypropylene, provides a resin from which cement adherent fibers may be produced.Type: GrantFiled: December 23, 1986Date of Patent: August 29, 1989Assignee: Exxon Chemical Patents Inc.Inventors: James J. McAlpin, Wai Y. Chow
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Patent number: 4839422Abstract: An adhesive composition which contains a thermoplastic elastomer which includes ethylene propylene rubber, ethylene propylene diene monomer, polyisobutylene butyl rubber, ethylene vinyl acetate graft copolymers thereof with C.sub.3 to C.sub.10 unsaturated mono- and polycarboxylic acids, a tackifying resin and a di- or polyamine cross-linking agent having 2-10 carbon atoms, which is useful as a hot melt or pressure sensitive adhesive having enhanced higher temperature properties.Type: GrantFiled: December 23, 1987Date of Patent: June 13, 1989Assignee: Exxon Chemical Patents Inc.Inventors: Kenneth O. McElrath, Martha L. Robertson, Wai Y. Chow
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Patent number: 4801630Abstract: A modifier composition is disclosed for compounding with a polyolefin to produce a resin from which cement adherent polyolefin fibers may be produced by conventional fiber forming methods. The modifier composition comprises the reaction product of a vinyl alcohol copolymer with an acid modified polyolefin. Such modifier composition when compounded in from about 1 to about 10 weight percent with a polyolefin, preferably polypropylene, provides a resin from which cement adherent fibers may be produced.Type: GrantFiled: May 4, 1987Date of Patent: January 31, 1989Assignee: Exxon Chemical Patents Inc.Inventors: Wai Y. Chow, James J. McAlpin
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Patent number: 4710540Abstract: A modifier composition is disclosed for compounding with a polyolefin to produce a resin from which cement adherent polyolefin fibers may be produced by conventional fiber forming methods. The modifier composition comprises the reaction product obtained from the high shear dry blending of an alkylamino alkoxysilane with an acid modified polyolefin, preferably .gamma.-aminopropyltriethoxysilane dry blended with maleated polypropylene. Such modifier composition when compounded in from about 1 to about 5 weight percent with a polyolefin, preferably polypropylene, provides a resin from which cement adherent fibers may be produced.Type: GrantFiled: January 3, 1986Date of Patent: December 1, 1987Assignee: Exxon Chemical Patents Inc.Inventors: James J. McAlpin, Wai Y. Chow
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Patent number: 4303775Abstract: A group of heat curable resins are provided which have good physical properties, which properties are retained to a surprising degree after prolonged exposure to temperatures as high as 300.degree. C. The products are acetylene end-capped esterimides having the structure: ##STR1## where R is an arylene group or a group having the structure: ##STR2## where X is ##STR3## R.sub.1 is an alkyl group containing 1 or 2 carbon atoms and R.sub.2 is hydrogen or an alkyl group containing 1 or 2 carbon atoms; and where R' is a phenylene group.Type: GrantFiled: September 6, 1979Date of Patent: December 1, 1981Assignee: Gulf Oil CorporationInventors: Wai Y. Chow, S. Paul Thackaberry
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Patent number: 4283551Abstract: A group of heat curable resins are provided which have good physical properties, which properties are retained to a surprising degree after prolonged exposure to temperatures as high as 300.degree. C. The products are acetylene end-capped polyesters prepared by reacting a hydroxyphenylacetylene with a diacid chloride of an aromatic dibasic acid such as 4,4'-benzophenone dicarboxylic acid dichloride.Type: GrantFiled: September 13, 1979Date of Patent: August 11, 1981Assignee: Gulf Oil CorporationInventors: Wai Y. Chow, Daniel J. Hurley, James H. Rea, S. Paul Thackaberry
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Patent number: 4251418Abstract: The products of the invention are acetylene end-capped polyimide oligomers prepared from a dianhydride of an aromatic tetracarboxylic such as 3,3', 4,4'-benzophenonetetracarboxylic acid, an aromatic diamine, and a propargyl ester of an amino-substituted aromatic acid such as aminobenzoic acid. The structure of the polyimide oligomers is shown in FIG. 3.Type: GrantFiled: April 27, 1979Date of Patent: February 17, 1981Assignee: Gulf Oil CorporationInventors: Wai Y. Chow, S. Paul Thackaberry
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Patent number: 4251417Abstract: The products of the invention are acetylene end-capped polyimide oligomers prepared from a dianhydride of an aromatic tetracarboxylic acid such as 3,3',4,4' benzophenonetetracarboxylic acid, an aromatic triamine, and an acetylene-substituted aromatic monoamine. The structure of the polyimide oligomers is shown in FIG. 3.Type: GrantFiled: April 25, 1979Date of Patent: February 17, 1981Assignee: Gulf Oil CorporationInventors: Wai Y. Chow, William J. Heilman
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Patent number: 4206107Abstract: The products of the invention are acetylene end-capped polyimide oligomers prepared from a dianhydride of an aromatic tetracarboxylic such as 3, 3', 4, 4'-benzophenonetetracarboxylic acid, an aromatic triamine, and a propargyl ester of an amino-substituted aromatic acid such as aminobenzoic acid. The structure of the polyimide oligomers is shown in FIG. 3.Type: GrantFiled: April 26, 1979Date of Patent: June 3, 1980Assignee: Gulf Oil CorporationInventors: Wai Y. Chow, S. Paul Thackaberry