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:
Aug. 05, 1997
Filed:
Nov. 17, 1995
Applicant:
Inventors:
Vincent John Gajewski, Cheshire, CT (US);
Christopher James Maupin, Aurora, IL (US);
Assignee:
Uniroyal Chemical Company, Inc., Middlebury, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 63 ; 25218222 ; 528 64 ; 528 76 ;
Abstract
A trimodal molecular weight toluene diisocyanate endcapped polyether polyol prepolymer is disclosed having free toluene diisocyanate below 0.5 weight percent where the three molecular weight polyols used are 300-800, 800 to 1500 and 1500-10000. Processes to make and use these prepolymers as polyurethane castable elastomers having exceptionally long flex fatigue lives using environmentally friendly materials essentially free of TDI are also disclosed.