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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 5274114 B1

PDFFull Text
Date of Patent:
Dec. 28, 1993

Filed:

Feb. 10, 1992

Preparation and use of 3, (4)-substituted pyrrolidines as catalysts for

Applicant:
Inventors:

Richard Weider, Leverkusen, DE;

Uwe Scholz, Cologne, DE;

Andreas Ruckes, Leverkusen, DE;

Assignee:

Bayer Aktiengesellschaft, Leverkusen, DE;

Attorneys:

Gil; Joseph C.

Henderson; Richard E. L.

Primary Examiner:

John Kight, III

Assistant Examiner:

Rachel Johnson

Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
548453 ; 548408 ; 548418 ; 548421 ; 548428 ; 548531 ; 548532 ; 548535 ; 548536 ; 548538 ; 548560 ; 548570 ; 502167 ;
Abstract

This invention relates to the preparation of 3- and/or 4-substituted pyrrolidine catalysts corresponding to formula (I) ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, X.sub.1, X.sub.2, and Y have the meanings described for formula (I) and to use of such catalysts in the polyisocyanate polyaddition process.

Find Patent Forward Citations

Weider, Richard. (1993). Preparation and use of 3, (4)-substituted pyrrolidines as catalysts for (U.S. Patent No. 5274114). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5274114

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

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