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:
Jun. 14, 1983
Filed:
Oct. 15, 1980
Applicant:
Inventors:
Peter Heitkamper, Dormagen, DE;
Klaus Konig, Leverkusen, DE;
Rudolf Fauss, Cologne, DE;
Kurt Findeisen, Odenthal, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
2602 / ; 260404 ; 2604654 ; 260938 ; 544164 ; 544322 ; 544332 ; 546312 ; 546335 ; 548163 ; 548361 ; 549461 ; 560 22 ; 560 24 ; 560 25 ; 560 27 ; 560 28 ; 560 29 ; 560 30 ; 560 31 ; 560 32 ; 560 33 ; 560115 ; 560157 ; 560158 ; 560160 ; 560162 ; 560166 ; 560167 ;
Abstract
A process for the preparation of N,O-disubstituted urethanes. Primary amines and alcohols are reacted with organic compounds having carbonyl groups at 120.degree. to 350.degree. C. Suitable carbonyl-containing compounds include N-unsubstituted urethanes. N-mono-substituted, N,N'-disubstituted ureas, or polyureas may be used in combination with the N-unsubstituted urethane. The product urethanes are particularly suitable for the preparation of isocyanates.