Pui Kwong Wong

US Patent:

6448333, Sep 10, 2002

Filed:

Dec 16, 1999

Appl. No.:

09/464150

Inventors:

Manuel Soler Rodriguez - Houston TX
Pierre Nazareth Tutunjian - Houston TX
Charles Lee Edwards - Houston TX
Paul Karol Casey - Katy TX
Carlton Edwin Ash - Sugar Land TX
Charles C. Hwo - Sugar Land TX
Pui Kwan Wong - Houston TX

Assignee:

Shell Oil Company - Houston TX

International Classification:

C08F28900

US Classification:

525 66, 525178, 525262, 525285, 525419

Abstract:

A grafted polyolefin polymers having high polarity produced by grafting bi-functional N-substituted diacids to maleated or other functional group grafted polyolefin. The new polymers exhibit improved water miscibility, compatability and good adhesion to polar materials such as nylon, polyester, glass, and metal substrates.

US Patent:

6465697, Oct 15, 2002

Filed:

Apr 13, 2001

Appl. No.:

09/834460

Inventors:

David Palmer - Katy TX
Pui Kwan Wong - Houston TX

Assignee:

Resolution Performance Products LLC - Houston TX

International Classification:

C07C 3916

US Classification:

568728, 568727

Abstract:

A process for the manufacture of a polyphenol compound such as bisphenol-A by introducing into a reaction zone a phenolic compound reactant, a carbonyl compound reactant, and a catalyst promoter comprising a dithioketal compound, and reacting the ingredients within the reaction zone in the presence of an acid catalyst.

US Patent:

6515174, Feb 4, 2003

Filed:

Jan 16, 2001

Appl. No.:

09/760545

Inventors:

Manuel Soler Rodriguez - Houston TX
Charles Chiu-Hsiung Hwo - Sugar Land TX
Pui Kwan Wong - Houston TX
Charles Lee Edwards - Houston TX

Assignee:

Shell Oil Company - Houston TX

International Classification:

C07C22904

US Classification:

562565, 564197

Abstract:

The present invention relates to reaction products formed from maleic anhydride and amino carboxylic acids. The reaction products are particularly useful for grafting polyolefins to increase their polarity and therefore enhance their physical properties.

US Patent:

50196456, May 28, 1991

Filed:

May 7, 1990

Appl. No.:

7/520303

Inventors:

Pui K. Wong - Katy TX
Eit Drent - Amsterdam, NL

Assignee:

Shell Oil Company - Houston TX

International Classification:

C08G 6702

US Classification:

528488

Abstract:

Certain linear alternating polymers of carbon monoxide and aliphatic. alpha. -olefin of 3 or more carbon atoms are characterized by a high degree of stereoregular character. Reduction of the degree of this stereoregular character, whether syndiotactic or isotactic, is achieved together with an increase in atactic character by contacting the stereoregular polymer with organic base at elevated temperature.

US Patent:

50101706, Apr 23, 1991

Filed:

Oct 20, 1989

Appl. No.:

7/424650

Inventors:

Gerrit G. Rosenbrand - Amsterdam, NL
Pui K. Wong - Katy TX

Assignee:

Shell Oil Company - Houston TX

International Classification:

C08G 6702

US Classification:

528392

Abstract:

An improved process for the production of linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon comprises the contacting of the monomeric reactants under polymerization conditions in the presence of a reaction diluent and a catalyst composition formed from a palladium compound, the anion of a non-hydrohalogenic strong acid and a mixed tetraaryl diphosphine ligand, one of which diphosphines has an ortho alkoxy substituent on each aryl moiety and one of which is free from alkoxy substitution in ortho positions. The process is characterized by a relatively high degree of catalyst activity and a low degree of reactor fouling.

US Patent:

50415301, Aug 20, 1991

Filed:

Nov 28, 1989

Appl. No.:

7/442089

Inventors:

Johannes A. Van Doorn - Amsterdam, NL
Olof Sudmeijer - Amsterdam, NL
Pui K. Wong - Katy TX

Assignee:

Shell Oil Company - Houston TX

International Classification:

C08G 6702

US Classification:

528392

Abstract:

Regio-regular copolymers of carbon monoxide and an ethylenically unsaturated hydrocarbon are produced by contacting the carbon monoxide and hydrocarbon under polymerization conditions in the presence of a more active catalyst composition formed from a palladium compound, the anion of a strong non-hydrohalogenic acid and a tetraalkyl diphosphine ligand.

US Patent:

49407740, Jul 10, 1990

Filed:

Aug 16, 1989

Appl. No.:

7/394688

Inventors:

Pui K. Wong - Katy TX

Assignee:

Shell Oil Company - Houston TX

International Classification:

C08G 6702

US Classification:

528392

Abstract:

An improved process for the production of linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon comprises the use as reaction diluent of a mixture of an aprotic diluent and water.

US Patent:

47661801, Aug 23, 1988

Filed:

Dec 23, 1986

Appl. No.:

6/946131

Inventors:

Pui K. Wong - Katy TX

Assignee:

Shell Oil Company - Houston TX

International Classification:

C08C 1928
C08F25506

US Classification:

525289

Abstract:

Polymeric compositions which may be readily crosslinked at temperatures above about 200. degree. C. comprise an elastomeric polymer possessing olefinic unsaturation and an effective amount of a benzocyclobutene derivative of the general formula ##STR1## where "X" is selected from the group consisting of ##STR2## where "R" is an alkylene group of 1 to 10 carbon atoms. Cured compositions are also claimed.