The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 26, 2002
Filed:
Aug. 23, 2001
Applicant:
Inventors:
Nai Wen Lin, Rochester Hills, MI (US);
Ravi R. Joshi, Auburn Hills, MI (US);
Assignee:
Huntsman International LLC, Salt Lake City, UT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 9/04 ; C08J 9/08 ; C08J 9/12 ; C08J 9/14 ; C08G 1/842 ;
U.S. Cl.
CPC ...
C08J 9/04 ; C08J 9/08 ; C08J 9/12 ; C08J 9/14 ; C08G 1/842 ;
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.