Method of preparing terephthalic acid dichloride and isophthalic

Details Method of preparing terephthalic acid dichloride and isophthalic Method of preparing terephthalic acid dichloride and isophthalic

1976-07-12

1978-05-23

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 5158

Patent

active

040910172

ABSTRACT:
Production of terephthalic acid dichloride and isophthalic acid dichloride by hydrolysis with water as a gas according to the following overall reaction: ##STR1## A Friedel-Crafts catalyst is used and some of the dichloride produced is maintained present throughout the reaction. The reaction is fast and the yield is high.

REFERENCES:
patent: 2791608 (1957-05-01), Golding
patent: 3835187 (1974-09-01), Tyson

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