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. 30, 1991
Filed:
Jun. 27, 1989
Applicant:
Inventors:
Keiichi Nakatani, Kyoto, JP;
Nobuyasu Nakasugi, Kyoto, JP;
Assignee:
San-Apro Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548336 ;
Abstract
A urethane catalyst which is an imidazole ether compound of the formula ##STR1## where R.sub.1, R.sub.2 and R.sub.3 are independently hydrogen, methyl or ethyl and R.sub.4 is ethylene, n-propylene or isopropylene. The imidazole compounds provide for delayed initiation while maintaining an acceptable cure time in the production of polyurethane foam.