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:
Apr. 07, 1981
Filed:
Dec. 18, 1979
Applicant:
Inventors:
William J Farrissey, Jr, Northford, CT (US);
David J Goldwasser, Cheshire, CT (US);
Kemal B Onder, New Haven, CT (US);
Assignee:
The Upjohn Company, Kalamazoo, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C08G / ;
U.S. Cl.
CPC ...
528 60 ; 2602 / ; 2604 / ; 2604 / ; 260464 ; 2604654 ; 2604 / ; 528 75 ;
Abstract
Novel liquid organic polyisocyanate compositions are disclosed which are obtained by reacting a carbodiimide-containing organic polyisocyanate with a carboxylic acid terminated butadiene-acrylonitrile low molecular weight copolymer in the proportions of from about 2 to about 30 parts of the copolymer per 100 parts of the polyisocyanate provided there is from about 0.01 to about 0.5 carboxylic acid equivalent per equivalent of carbodiimide. The liquid polyisocyanates are particularly useful in providing hard glassy polyurethanes having improved impact strengths.