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:
Jun. 14, 1994
Filed:
Aug. 05, 1993
Applicant:
Inventors:
Kiyotake Morimoto, Tokyo, JP;
Satoshi Nakamura, Tokyo, JP;
Assignee:
Nisshinbo Industries, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
521108 ; 521128 ; 521129 ; 521901 ; 521902 ;
Abstract
A method for producing a modified polyisocyanurate foam by reacting an organic polyisocyanate, polyol and water in the presence of a trimerizing catalyst composed of a certain hydroxyalkyl quaternary ammonium compound, and a carbodiimidizing catalyst composed of a certain phosphorene oxide. The method enables production of low density modified polyisocyanurate foams with ease and rapidly without using volatile blowing agents such as CFC, HCFC, HFC and methylene chloride.