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. 15, 1997
Filed:
Mar. 18, 1996
Applicant:
Inventors:
Tatsuya Okutani, Tokyo, JP;
Yasuo Imashiro, Tokyo, JP;
Eiji Sasaki, Tokyo, JP;
Shiro Nagahata, Tokyo, JP;
Kiyotake Morimoto, Tokyo, JP;
Assignee:
Nisshinbo Industries, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
525453 ; 525460 ; 521155 ; 521170 ; 524115 ; 524178 ;
Abstract
A process for preparation of a polyurethane-polycarbodiimide foam which comprises reacting a polyol component containing a benzylic ether type phenol resin having hydroxymethyl groups with an organic polyisocyanate component in the presence of an organotin catalyst for urethane formation and a carbodiimidating catalyt. According to this process, it is unnecessary to use fluorine-containing halogenated hydrocarbons as a blowing agent, and blowing on the spot is possible using a spray blowing machine or the like.