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:
Apr. 20, 1976
Filed:
Jul. 03, 1974
Applicant:
Inventors:
Wolfgang Gaenzler, Darmstadt-Arheilgen, DT;
Guenter Schroeder, Ober-Ramstadt, DT;
Klaus Kabs, Seeheim, DT;
Assignee:
Rohm GmbH, Darmstadt, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
260463 ;
Abstract
A method for preparing carbonic acid esters, ##EQU1## by reacting an alcohol, ROH, with carbon monoxide and oxygen in the presence of a catalyst comprising a copper salt, chloride or bromide, and an organic phosphorus compound such as a phosphine oxide, phosphite, phosphate, or phosphonate.