Invention Grant
- Patent Title: Process for the preparation of diaryl carbonate
- Patent Title (中): 制备碳酸二芳基酯的方法
-
Application No.: US12017303Application Date: 2008-01-21
-
Publication No.: US07732629B2Publication Date: 2010-06-08
- Inventor: Evert Van Der Heide , Timothy Michael Nisbet , Garo Garbis Vaporciyan , Cornelis Leonardus Maria Vrouwenvelder
- Applicant: Evert Van Der Heide , Timothy Michael Nisbet , Garo Garbis Vaporciyan , Cornelis Leonardus Maria Vrouwenvelder
- Applicant Address: US TX Houston
- Assignee: Shell Oil Company
- Current Assignee: Shell Oil Company
- Current Assignee Address: US TX Houston
- Priority: EP07100959 20070123
- Main IPC: C07C69/96
- IPC: C07C69/96

Abstract:
The invention relates to a process for the preparation of a diaryl carbonate by transesterification of an aromatic alcohol with a dialkyl carbonate in the presence of a transesterification catalyst during a period of time [ta], in which the aryl moiety is selected from unsubstituted phenyl and mono-, di- and trisubstituted phenyl groups, in which the alkyl moiety is selected from C2 to C4 linear and branched alkyl groups, in which the catalyst concentration is designated [ca], expressed as gram catalyst per gram of aromatic alcohol and dialkyl carbonate, in which the period of time [tm] and catalyst concentration [cm] are determined to arrive at a pre-set approach to the equilibrium for the transesterification of the aromatic alcohol with dimethyl carbonate to methyl aryl carbonate and methanol, in which the product [ca]*ta is at least 1.5*[cm]*tm under otherwise the same reaction conditions.
Public/Granted literature
- US20080200712A1 PROCESS FOR THE PREPARATION OF DIARYL CARBONATE Public/Granted day:2008-08-21
Information query