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:
May. 28, 2002
Filed:
Dec. 21, 1995
Applicant:
Inventor:
Usama E. Younes, West Chester, PA (US);
Assignee:
Bayer Antwerp, N.V., Antwerpen, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 9/04 ; C08G 1/810 ; C08G 1/848 ; C08L 7/508 ;
U.S. Cl.
CPC ...
C08J 9/04 ; C08G 1/810 ; C08G 1/848 ; C08L 7/508 ;
Abstract
Low density microcellular polyurethane foams suitable for athletic shoe midsoles and other applications are prepared by diol chain extension of 12 to 16% free NCO isocyanate-terminated prepolymers prepared by reacting an excess of di- or polyisocyanate with one or more high molecular weight, high functionality polyoxypropylene diols preferably employing water as a reactive blowing agent. The microcellular elastomers exhibit increased hardness despite the higher molecular weight of the polyoxypropylene diol and further exhibit greater tear resistance, lower compression set, and markedly lower shrinkage.