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:
Nov. 10, 1981
Filed:
Jul. 17, 1980
Applicant:
Inventors:
Takao Nomura, Toyota, JP;
Yoshio Taguchi, Atsuta, JP;
Kozaburo Nagata, Kusatsu, JP;
Takuji Isaka, Kyoto, JP;
Assignees:
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Sanyo Chemical Ind., Ltd., Kyoto, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
521131 ; 521174 ; 521176 ; 528 75 ; 528 76 ; 528 77 ;
Abstract
High-density polyisocyanurate resins having improved rigidity, heat resistance and/or impact resistance can be obtained by reacting a polyisocyanate with a polymer polyol derived from a polyol having a molecular weight of at least 4500, and optionally a crosslinker, in the presence of trimerization catalyst, using isocyanate index of 200-5000.