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:
Jul. 03, 2012
Filed:
Jun. 10, 2010
Applicants:
Zhen Wei Huang, Chiayi, TW;
Chih Wei Chang, Ta-Sheh, TW;
Chia Jung Tsai, Kaohsiung, TW;
Inventors:
Assignee:
China Petrochemical Development Corporation, Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 68/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process for producing diaryl carbonates, which is to synthesize diaryl carbonates by oxidative carbonylation of phenols with carbon monoxide and oxygen, and in particular, to synthesize diphenyl carbonate from phenol. The present invention is characterized in that a catalytic system comprising a metal halide catalyst and one or more cocatalysts of nitrogenous heterocyclic compounds is used to increase the convertibility, selectivity and yield of this catalytic reaction.