Continuous process for the preparation of phenyl methyl carbonat

Details Continuous process for the preparation of phenyl methyl carbonat Continuous process for the preparation of phenyl methyl carbonat

1996-12-18

1998-01-06

Ambrose, Michael G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbonate esters

C07C 6806

Patent

active

057056730

ABSTRACT:
The present invention relates to a continuous process for the preparation of phenyl methyl carbonate. The process is carried out in a first distillation column consisting of a lower reactive section and an upper rectification section and a second rectification column. The reactive section of the first column has a practically constant thermal profile at the optimum temperature for the reaction, and that with the use of the second column a circulation of dimethyl carbonate is created between the top and bottom of the first column which allows an advantageous excess of dimethylcarbonate to be fed to the bottom of the first column.

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patent: 5210268 (1993-05-01), Fukuoka et al.
patent: 5322958 (1994-06-01), Dreoni et al.
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patent: 5362901 (1994-11-01), Wagner et al.
patent: 5380908 (1995-01-01), Murata et al.
patent: 5395949 (1995-03-01), Delledonne et al.

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