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:
Mar. 02, 2010
Filed:
Sep. 20, 2007
Applicants:
Chi-he Chen, Taipei, TW;
Chin-yi Lee, Taipei, TW;
Chia-jung Tsai, Taipei, TW;
Inventors:
Assignee:
China Petrochemical Development Corporation, Taipei, TW;
Primary Examiner:
Int. Cl.
CPC ...
C07C 67/36 (2006.01); C07C 51/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for preparing a carboxylic acid by the carbonylation of an alcohol in a reaction medium is provided. The reaction medium includes a catalyst promoter having a metal species selected form the group consisting of group IIIA-IVA metals, group IB-VIIIB metals and lanthanides, together with a hydrohalic acid to prevent catalyst precipitation and to maintain high reaction rates in case of low water content.