Title:
PRODUCTION OF DIMETHYLBIPHENYLDICARBOXYLIC ACID
Document Type and Number:
Japanese Patent JPH06179638
Kind Code:
A
Abstract:
PURPOSE: To obtain a method for producing a dimethylbiphenyldicarboxylic acid which is an improvement in a conventional method for hydrolyzing an ester with an alkaline salt and capable of producing the carboxylic acid according to simple operation.
CONSTITUTION: This method for producing dimethylbiphenyldicarboxylic acid is characterized by hydrolyzing a dialkyl dimethylbiphenyldicarboxylate obtained by the oxidative coupling reaction of an alkyl o-toluate at 150-300°C under 5-100kg/cm2 pressure.
Inventors:
SHIOTANI AKINORI
WASHIO KATSUTOSHI
WASHIO KATSUTOSHI
Application Number:
JP10224391A
Publication Date:
June 28, 1994
Filing Date:
February 08, 1991
Export Citation:
Assignee:
UBE INDUSTRIES
International Classes:
B01J27/04; B01J31/02; C07B61/00; C07C51/09; C07C63/331; (IPC1-7): C07C63/331; B01J27/04; B01J31/02; C07B61/00; C07C51/09