Nai Wen Lin

US Patent:

6486224, Nov 26, 2002

Filed:

Aug 23, 2001

Appl. No.:

09/938215

Inventors:

Nai Wen Lin - Rochester Hills MI
Ravi R. Joshi - Auburn Hills MI

Assignee:

Huntsman International LLC - Salt Lake City UT

International Classification:

C08J 904

US Classification:

521159, 521 51, 521113, 521130, 521131, 521172, 521173

Abstract:

The disclosed invention relates to a polyurethane elastomer that has improved hydrolysis resistance. The polyurethane elastomer is made by reacting a polyol blend of an aromatic dicarboxylic acid based polyester polyol, an aliphatic dicarboxylic acid based polyester polyol, and a blowing agent. The polyol blend is reacted with an isocyanate terminated prepolymer. The aromatic dicarboxylic acid based polyester polyol is the reaction product of an aliphatic alcohol and ortho-phthalic acid. The aliphatic dicarboxylic acid based polyester polyol is the reaction product of adipic acid and glycols.

US Patent:

20030032757, Feb 13, 2003

Filed:

Jul 26, 2002

Appl. No.:

10/206685

Inventors:

Nai Lin - Rochester Hills MI, US

International Classification:

C08G018/00

US Classification:

528/044000

Abstract:

Polyol compositions that can be used to manufacture polyurethane elastomers having improved abrasion resistance, which are particularly suited for use as soles for running shoes. The polyol composition comprises at least two polyols. The first polyol is a linear, hydroxy terminated polyester diol made from: a) ethylene glycol; b) 1,4-butanediol; and c) adipic acid. The second polyol is a slightly branched hydroxy terminated polyester polyol made from: a) ethylene glycol; b) 1,4-butanediol; and c) adipic acid. Polyurethane elastomers, shoe soles made therefrom, and a process for making the polyurethane elastomers are also disclosed.

US Patent:

60310103, Feb 29, 2000

Filed:

Aug 11, 1997

Appl. No.:

8/909109

Inventors:

Nai Wen Lin - Rochester Hills MI

Assignee:

Imperial Chemical Industries PLC - London

International Classification:

C08G 1814

US Classification:

521 51

Abstract:

The present invention relates to a process for preparing a flexible polyurethane foam from the reaction of a polyisocyanate composition prepared from the reaction of an excess of organic polyisocyanate and a polyether polyol having a high ethylene oxide content and an isocyanate reactive composition comprising a chain extending agent and a combination of a polyether polyol having a high ethylene oxide content and a random copolymer having a high ethylene oxide content, and the product prepared therefrom.

US Patent:

52349640, Aug 10, 1993

Filed:

Jan 28, 1992

Appl. No.:

7/827243

Inventors:

Nai W. Lin - Rochester Hills MI
Roland G. Jaber - Sterling Heights MI
Brian Fogg - Rochester Hills MI

Assignee:

Imperial Chemical Industries PLC - London

International Classification:

C08G 1814

US Classification:

521 99

Abstract:

Microcellular polyurethane elastomers having nonpeelable skin surfaces having densities ranging from 0. 1-1. 1 gm/cm. sup. 3 can be made from conventionally employed reactants using carbon dioxide gas as the sole source of blowing agent resulting from the H. sub. 2 O/-NCO reaction when carried out in an admixture with nonhydratable particulate inorganic salts.

US Patent:

57102317, Jan 20, 1998

Filed:

Feb 20, 1996

Appl. No.:

8/604146

Inventors:

Brian Fogg - Rochester Hills MI
Herbert Russell Gillis - West Deptford NJ
Nai Wen Lin - Rochester Hills MI

Assignee:

Imperial Chemical Industries PLC - London

International Classification:

C08G 1810

US Classification:

528 59

Abstract:

An isocyanate-reactive composition is provided which comprises: (a) at least one compound having a plurality of isocyanate-reactive groups; and (b) a fatty polyamine having the formula: R. sup. 1 --(NH--R. sup. 2). sub. x --NH. sub. 2 wherein R. sup. 1 is an alkyl group containing 8 to 40 carbon atoms, R. sup. 2 is a divalent linking group containing 1 to 8 carbon atoms and x has a value of 1 to 4. Methods for preparing flexible foam articles utilizing the isocyanate-reactive compositions are also provided.