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. 26, 1994
Filed:
Feb. 12, 1993
Applicant:
Inventors:
Assignee:
Tosoh Corporation, Shinnanyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
521117 ; 521128 ; 521129 ;
Abstract
Process for producing a flexible polyurethane foam through reaction of a polyol with a polyisocyanate in the presence of an amine catalyst, a blowing agent, and a foam stabilizer, the amine catalyst comprising at least one of the imidazoles represented by the general formula below: ##STR1## wherein R.sup.1 is alkyl of 1 to 4 carbons, dimethylaminopropyl, benzyl, vinyl, or hydroxyalkyl of 1 to 3 carbons; R.sup.2 is hydrogen, alkyl of 1 to 4 carbons, allyl, benzyl, or phenyl; and R.sup.3 and R.sup.4 are respectively hydrogen, alkyl of 1 to 4 carbons, or hydroxymethyl.