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:
Mar. 25, 1980
Filed:
Oct. 13, 1978
Applicant:
Inventors:
Vincent J Gajewski, Jackson, NJ (US);
Elliot Eisenbach, New York, NY (US);
Assignee:
M & T Chemicals Inc., Woodbridge, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 52 ;
Abstract
The reaction between an isocyanate-terminated prepolymer and an aromatic diamine to form an elastomeric urethane-urea copolymer is accelerated using a quaternary ammonium compound as the catalyst. The quaternary ammonium compound is optionally employed in combination with a mono- or polyfunctional carboxylic acid containing from 4 to 20 carbon atoms.