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:
Jan. 09, 1990
Filed:
Nov. 21, 1988
Applicant:
Inventors:
Jeffrey R Quay, Kutztown, PA (US);
Jeremiah P Casey, Emmaus, PA (US);
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 61 ; 528 64 ; 528 76 ; 528 83 ;
Abstract
This invention relates to a polyisocyanate prepolymer for polyurethane and polyurethane/urea elastomer synthesis and to the resulting elastomer. The prepolymer is formed by reacting a cyclohexanediisocyanate with a long chain polyol under conditions such that essentially a 2:1 adduct is formed. Excess cyclohexanediisocyanate is removed prior to forming the elastomer.