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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 5905151 B1

PDFFull Text
Date of Patent:
May. 18, 1999

Filed:

Feb. 18, 1993

Trimer catalyst for aliphatic and aromatic isocyanates

Applicant:
Inventors:

William E Slack, Moundsville, WV (US);

Hersel T Kemp, II, New Martinsville, WV (US);

Assignee:

Bayer Corporation, Pittsburgh, PA (US);

Attorneys:

Gil; Joseph C.

Brown; N. Denise

Primary Examiner:

Rabon Sergent

Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544222 ; 528 49 ; 528 57 ; 528 85 ; 544193 ; 560330 ; 560336 ; 560355 ; 560358 ; 560359 ; 560360 ;
Abstract

This invention relates to a process for trimerizing organic polyisocyanates in the presence of thermally active catalyst systems. The catalyst systems comprise (a) compounds selected from the group consisting of 1) lithium salts of aliphatic or aromatic carboxylic acids, 2) lithium salts of hydroxyl group containing compounds wherein the hydroxyl groups are directed attached to an aromatic ring, and 3) lithium hydroxide; used in conjunction with (b) an organic compound which contains at least one hydroxyl group.

Find Patent Forward Citations

Slack, William. (1999). Trimer catalyst for aliphatic and aromatic isocyanates (U.S. Patent No. 5905151). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5905151

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

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