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:
Aug. 11, 2009
Filed:
Oct. 30, 2002
Applicants:
Hiroyuki Kometani, Shinnanyo, JP;
Yutaka Tamano, Tokuyama, JP;
Inventors:
Hiroyuki Kometani, Shinnanyo, JP;
Yutaka Tamano, Tokuyama, JP;
Assignee:
TOSOH Corporation, Yamaguchi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 18/38 (2006.01);
U.S. Cl.
CPC ...
Abstract
Flexible polyurethane foams are produced by reacting a polyol and a polyisocyanate in the presence of a catalysts and other auxiliary agents, the process characterized in that a tin-based catalyst is not used. One process includes reacting a polyether polyol containing at least 5% by weight of an oxyethylene group in the chain and having a terminal secondary OH group, a toluene diisocyanate and/or a derivative, and one or more specified imidazole compounds, the process conducted in the absence of a tin-based catalyst.