Patent · US Active

Method for producing urethanes

US8871965B2 · kind B2 · utility

1Cited by

6References

20Claims

0Family size

Assignee

BASF SE

Inventors

Axel Franzke · Goldkronach, DE
Robert Baumann · Mannheim, DE
Michael Bock · Ruppertsberg, DE

Key dates

Filing date	Oct 20, 2010
Grant date	Oct 28, 2014
Priority date	—
Expiry date	Nov 10, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C263/04
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The content of the invention is a process for preparing urethanes by reaction of aromatic amines with a dialkyl carbonate, wherein the alkyl radical of the organic dialkyl carbonate comprises 4-18 carbon atoms and is branched in the 2 position, and the reaction is performed in the presence of a substoichiometric amount of base, based on the amino groups.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.