logo

For the Inventor, By the Inventor

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.:

US 4115373 B1

PDFFull Text
Date of Patent:
Sep. 19, 1978

Filed:

Nov. 01, 1976

Process for the production of polyisocyanates containing isocyanurate

Applicant:
Inventors:

Gerhard Henes, Leverkusen, DE;

Hans Jurgen Muller, Cologne, DE;

Pramod Gupta, Bedburg-Erft, DE;

Joachim Zirner, Leverkusen, DE;

Assignee:

Bayer Aktiengesellschaft, Leverkusen, DE;

Attorneys:

Harsh; Gene

Gil; Joseph C.

Parry; William E.

Primary Examiner:

HS Cockeram

Int. Cl.
CPC ...
C07D / ; C08G / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
528 48 ; 260 / ; 260 / ; 2604 / ; 528 53 ; 528 73 ;
Abstract

This invention relates to a new process for the production, in inert organic solvents, of physiologically compatible polyisocyanates containing isocyanurate groups which have a monomeric diisocyanate content, based on solids, of at most 0.7%, by weight. The process uses Mannich bases as the trimerizing catalyst at temperatures below 60.degree. C and the reaction is terminated at the desired degree of trimerization by thermally decomposing the catalyst or by deactivating with a catalyst poison.

Find Patent Forward Citations

Quick Actions:

Henes, Gerhard. (1978). Process for the production of polyisocyanates containing isocyanurate (U.S. Patent No. 4115373). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4115373

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…