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:
Nov. 14, 1989
Filed:
Nov. 30, 1988
Applicant:
Inventors:
Timothy A Tufts, Powell, OH (US);
Robert S Bock, Hazelwood, MO (US);
Christopher T Moss, Dublin, OH (US);
Assignee:
Ashland Oil, Inc., Ashland, KY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
521129 ; 528 54 ;
Abstract
Disclosed is a process for the catalyzed reaction of an isocyanate and an active hydrogen compound wherein the reaction is conducted in the presence of a novel catalyst comprising the salt of 1,8-diazobicyclo(5.4.0)undec-7-ene and 1,4-benzoquinone. Preferred catalyzed reaction mixtures comprise Reaction Injection Molding urethanes (RIM). The novel catalyst salts provide a controlled induction period prior to the onset of gelation of the reaction mixture while providing complete cure of the reaction mixture thereafter.