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:
Dec. 07, 1976
Filed:
Oct. 28, 1975
Applicant:
Inventors:
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DT;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2602 / ; 260 / ; 260 / ; 260 / ; 260 / ;
Abstract
Soluble polyisocyanates of isocyanurate structure are produced by heating polyisocyanates in the presence of Mannich bases and carbamic acid esters of isocyanates and secondary alcohols. When such a process is used, the polymerization reactions begin without incubation times and the catalysts need not be inactivated by introducing additives because they deactivate themselves at high temperatures.