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. 14, 1981
Filed:
Oct. 12, 1979
Applicant:
Inventors:
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
260463 ;
Abstract
In a process for the continuous preparation of chloroformic acid methyl ester by contacting phosgene with methanol at a temperature of up to 50.degree. C. in a reactor which contains chloroformic acid methyl ester as the solvent and in which phosgene is dispersed, the improvement wherein gaseous phosgene is dispersed by already formed and circulated chloroformic acid methyl ester into the reaction chamber by means of a dispersing device, and at the same time methanol is introduced into the homogeneous gas-in-liquid dispersion.