Stephen W Hobbs

Author:

Stephen D. Hobbs

ISBN #:

0870715445

Author:

Stephen D. Hobbs

ISBN #:

0874370019

Author:

Stephen Hobbs

ISBN #:

0620270780

US Patent:

6383324, May 7, 2002

Filed:

Nov 24, 1999

Appl. No.:

09/448125

Inventors:

David E. Vietti - Cary IL
Stephen J. Hobbs - Woodstock IL
Keith B. Potts - Elgin IL
Arlene C. Hanson - Wonder Lake IL

Assignee:

Morton International, Inc. - Chicago IL

International Classification:

B32B 1700

US Classification:

156107, 1563314, 428419, 528 58

Abstract:

An insulated glass sealant having the best characteristics of polysulfides and polyurethanes rather than the worst is made from a polysulfide-based polyurethane prepared by a one-step procedure wherein a randomly copolymeric hydroxyl-terminated polysulfide polyacetal is reacted with a polyisocyanate at a ratio of from about 1:1 to about 1:1. 2 on an equivalents basis. The copolymeric hydroxyl-terminated polysulfide polyacetal is made by the condensation of formaldehyde with a mixture of a dithiodialkylene glycol and an aliphatic or cycloaliphatic diol.

US Patent:

51379503, Aug 11, 1992

Filed:

Sep 25, 1991

Appl. No.:

7/765409

Inventors:

Stephen J. Hobbs - Woodstock IL
Kevin J. Sheehan - Parkersburg WV
William P. Enlow - Belpre OH

Assignee:

Borg-Warner Specialty Chemicals, Inc. - Parkersburg WV

International Classification:

C07F 915
C08K 552

US Classification:

524120

Abstract:

The present invention provides an improved process for making diphosphaspiroundecanes and product-by-process, wherein the process comprises reacting a hydroxyl-substituted organic compound, phosphorous trichloride and pentaerythritol to form an organic-substituted diphosphaspiroundecane such that formation of said organic-substituted diphosphaspiroundecane takes place in the presence of a tri-n-alkylamine having n-alkyl moieties such that each n-alkyl moiety has at least three carbon atoms. The present invention is also directed to bis-3,9-(2,6-di-t-alkyl-4-alkylphenoxy)-2,4,8,10-tetroxa-3,9-diphosphaspri o[5. 5]undecanes and polymer compositions containing an effective amount of same.

US Patent:

53089014, May 3, 1994

Filed:

Sep 27, 1993

Appl. No.:

8/126744

Inventors:

Stephen J. Hobbs - Woodstock IL
Kevin J. Sheehan - Parkersburg WV
William P. Enlow - Belpre OH

Assignee:

General Electric Company - Pittsfield MA

International Classification:

C08K 552

US Classification:

524120

Abstract:

The present invention provides an improved process for making diphosphaspiroundecanes and product-by-process, wherein the process comprises reacting a hydroxyl-substituted organic compound, phosphorous trichloride and pentaerythritol to form an organic-substituted diphosphaspiroundecane such that formation of said organic-substituted diphosphaspiroundecane takes place in the presence of a tri-n-alkylamine having n-alkyl moieties such that each n-alkyl moiety has at least three carbon atoms. The present invention is also directed to bis-3,9-(2,6-di-t-alkyl-4-alkylphenoxy)-2,4,8,10-tetroxa-3,9-diphosphaspri o[5. 5]undecanes and polymer composition containing an effective amount of same.