Wai Ming Chow

US Patent:

42835518, Aug 11, 1981

Filed:

Sep 13, 1979

Appl. No.:

6/075364

Inventors:

Wai Y. Chow - Houston TX
Daniel J. Hurley - Houston TX
James H. Rea - Houston TX
S. Paul Thackaberry - Houston TX

Assignee:

Gulf Oil Corporation - Pittsburgh PA

International Classification:

C07C 6976

US Classification:

560 86

Abstract:

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.

US Patent:

57959463, Aug 18, 1998

Filed:

Aug 8, 1997

Appl. No.:

8/908831

Inventors:

Pawan Kumar Agarwal - Houston TX
Aspy Keki Mehta - Humble TX
Wai Yan Chow - Houston TX
James John McAlpin - Houston TX

Assignee:

Exxon Chemical Patents Inc. - Houston TX

International Classification:

C08F 1006
B32B 2732

US Classification:

5263481

Abstract:

Film is provided wherein, at least one layer comprises polymer, a molecular majority of which is derived from propylene, having water vapor transmission rate of less than or equal to about (-7. 4428 g. times. mu. m/m. sup. 2. times. day. times. % polymer crystallinity) (% polymer crystallinity)+627. 32 g. times. mu. m/m. sup. 2. times. day, or (-0. 0189 g. times. mil/100 in. sup. 2. times. day. times. % polymer crystallinity) (% polymer crystallity)+1. 593 g. times. mil/100 in. sup. 2. times. day.

US Patent:

49526316, Aug 28, 1990

Filed:

Aug 4, 1988

Appl. No.:

7/228401

Inventors:

James J. McAlpin - Houston TX
Wai Y. Chow - Houston TX

Assignee:

Exxon Chemical Patents Inc. - Linden NJ

International Classification:

C08F 800

US Classification:

525101

Abstract:

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.

US Patent:

48618128, Aug 29, 1989

Filed:

Dec 23, 1986

Appl. No.:

6/941979

Inventors:

James J. McAlpin - Houston TX
Wai Y. Chow - Houston TX

Assignee:

Exxon Chemical Patents Inc. - Linden NJ

International Classification:

C08K 300

US Classification:

524 3

Abstract:

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.

US Patent:

53767012, Dec 27, 1994

Filed:

Sep 3, 1992

Appl. No.:

7/910079

Inventors:

Wai Y. Chow - Houston TX
Michel Goguelin - Charavines, FR

Assignee:

Exxon Chemical Patents Inc. - Linden NJ

International Classification:

C08K 906
C08K 340
C08L 5106
B32B 1704

US Classification:

523213

Abstract:

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.

US Patent:

42514177, Feb 17, 1981

Filed:

Apr 25, 1979

Appl. No.:

6/032997

Inventors:

Wai Y. Chow - Houston TX
William J. Heilman - Houston TX

Assignee:

Gulf Oil Corporation - Pittsburgh PA

International Classification:

C08G 7312

US Classification:

260 302

Abstract:

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.

US Patent:

42061075, Jun 3, 1980

Filed:

Apr 26, 1979

Appl. No.:

6/033345

Inventors:

Wai Y. Chow - Houston TX
S. Paul Thackaberry - Houston TX

Assignee:

Gulf Oil Corporation - Pittsburgh PA

International Classification:

C08G 7310
C08G 7312

US Classification:

260 302

Abstract:

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.

US Patent:

48016306, Jan 31, 1989

Filed:

May 4, 1987

Appl. No.:

7/046205

Inventors:

Wai Y. Chow - Houston TX
James J. McAlpin - Houston TX

Assignee:

Exxon Chemical Patents Inc. - Linden NJ

International Classification:

C08K 334
C08L 2902

US Classification:

524 5

Abstract:

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.