John C Lin

US Patent:

56271212, May 6, 1997

Filed:

Jun 15, 1995

Appl. No.:

8/490990

Inventors:

John Lin - Cedar Park TX
Upali Weerasooriya - Austin TX
Bruce E. Leach - Austin TX
Steve V. Orsak - Cedar Park TX

Assignee:

Condea Vista Company - Houston TX

International Classification:

B01J 3100

US Classification:

502170

Abstract:

A process for preparing an alkoxylation catalyst suitable for alkoxylating compounds such as active hydrogen-containing compounds wherein an alkoxylated alcohol mixture, a calcium-containing compound that is at least partially dispersible in the alkoxylated alcohol mixture, and a carboxylic acid are mixed together to produce a calcium-containing composition having titratable alkalinity, the composition being obtained under conditions to prevent loss of water, the composition being at least partially neutralized with an inorganic acid under conditions to prevent loss of water to produce a partially neutralized calcium-containing catalyst.

US Patent:

54987539, Mar 12, 1996

Filed:

Apr 25, 1994

Appl. No.:

8/232679

Inventors:

Upali Weerasooriya - Austin TX
John Lin - Cedar Park TX
Janet L. Watson - Austin TX

Assignee:

Vista Chemical Company - Houston TX

International Classification:

C07C 4100

US Classification:

562110

Abstract:

A process for producing alkali metal isethionate ethoxylates by reacting an alkali metal isethionate and a polyol, the mole ratio of polyol to alkali metal isethionate being greater than about 7:1, the reaction mixture produced being neutralized with a non-oxidizing inorganic acid to produce a neutralized reaction mixture from which the alkali metal isethionate ethoxylate is recovered.

US Patent:

57314616, Mar 24, 1998

Filed:

Jan 3, 1996

Appl. No.:

8/582467

Inventors:

John Lin - Cedar Park TX
Upali Weerasooriya - Austin TX
Paul A. Filler - Leander TX

Assignee:

Condea Vista Company - Houston TX

International Classification:

C07C30702
C07C31116

US Classification:

564 93

Abstract:

Disclosed are surfactant compositions comprising a compound of formula I ##STR1## wherein R is an alkyl group having 6 to 20 carbon atoms, R. sub. 1 is a short chain alkyl group and Ar is an aryl group having 6 carbon atoms.

US Patent:

58472100, Dec 8, 1998

Filed:

Sep 19, 1997

Appl. No.:

8/934118

Inventors:

John Lin - Cedar Park TX
Upali Weerasooriya - Austin TX
Paul A. Filler - Leander TX

Assignee:

Condea Vista Company - Houston TX

International Classification:

C07C30702
C07C31116

US Classification:

564 93

Abstract:

Disclosed are processes for the production of compounds of formula I ##STR1## comprising reacting the alkylarylsulfonyl chloride with an N-alkylglucamine. The compounds are useful surfactants.

US Patent:

52200469, Jun 15, 1993

Filed:

Aug 22, 1991

Appl. No.:

7/748449

Inventors:

Bruce E. Leach - Austin TX
John Lin - Cedar Park TX
Cynthia L. Aeschbacher - Austin TX
Donald T. Robertson - Austin TX
Tonyette S. Sandoval - Austin TX
Upali Weerasooriya - Austin TX

Assignee:

Vista Chemical Company - Houston TX

International Classification:

C07C 5100

US Classification:

554149

Abstract:

A process for producing alkoxylated methyl esters to produce a narrow homolog distribution of the alkoxylate species in which a staring material methyl ester and an alkylene oxide are reacted in the presence of selected calcium based catalysts.

US Patent:

53860454, Jan 31, 1995

Filed:

Aug 5, 1992

Appl. No.:

7/924952

Inventors:

Upali Weerasooriya - Austin TX
Donald T. Robertson - Austin TX
John Lin - Cedar Park TX
Bruce E. Leach - Austin TX
Cynthia L. Aeschbacher - Austin TX
Tonyette S. Sandoval - Austin TX

Assignee:

Vista Chemical Company - Houston TX

International Classification:

C07C 6996

US Classification:

554149

Abstract:

A process for producing alkoxylated mono-, di-, and tri-esters in which a starting material ester and an alkylene oxide are reacted in the presence of selected calcium based catalysts.

US Patent:

57507490, May 12, 1998

Filed:

Feb 9, 1996

Appl. No.:

8/599300

Inventors:

Upali Weerasooriya - Austin TX
John Lin - Cedar Park TX

Assignee:

CONDEA Vista Company - Houston TX

International Classification:

C07C23102
C07C23502

US Classification:

554 69

Abstract:

A process for preparing a surfactant composition comprising reacting an N-alkylpolyhydroxyamine and an alkoxylated triglyceride of a fatty acid to produce a mixture of a polyhydroxy-fatty amide, an alkoxylated monoglyceride of a fatty acid, and an alkoxylated diglyceride of a fatty acid, the resulting mixture providing a water soluble surfactant composition.

US Patent:

54881480, Jan 30, 1996

Filed:

Sep 1, 1993

Appl. No.:

8/115313

Inventors:

Upali Weerasooriya - Austin TX
John Lin - Cedar Park TX
K. Lee Matheson - Austin TX
Donald T. Robertson - Austin TX
Janet L. Watson - Austin TX
LeAnn M. Rowe - Pflugerville TX

Assignee:

Vista Chemical Company - Houston TX

International Classification:

C07C30920

US Classification:

562123

Abstract:

A process for sulfonating internal olefins wherein a dilute solution of the internal olefins in an inert hydrocarbon solvent is sulfonated to produce a reaction mixture containing intermediate sulfonated compounds, the intermediate sulfonated compounds in the reaction mixture being neutralized under conditions to form neutralized sulfonated compounds, the neutralized sulfonated compounds in the reaction mixture being hydrolyzed to form a product mixture containing hydroxy alkane sulfonates and alkene sulfonates that are then recovered.