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Title:
PRODUCTION OF AROMATIC POLYESTER COPOLYMER
Document Type and Number:
Japanese Patent JPS5796017
Kind Code:
A
Abstract:

PURPOSE: The reaction between a specific phenolic compound and an aromatic dicarboxylic dichloride in the presence of an inorganic base compound is followed by the reaction of the product with another aromatic dicarboxylic dichloride to produce the titled copolymer with highly alternate molecular arrangement.

CONSTITUTION: One mole of a dihydric phenol of formula I or II (Z is 1W9C alkylene, O, S; X1, X2 are H, chlorine atom) is combined with 0.3W0.7mol of (A) an aromatic dicarboxylic dichloride such as terephthaloyl chloride and they are made to react with each other in a mixture of water and a solvent inmiscible with water such as dichloromethane in the presence of an inorganic base compound such as lithium hydroxide. Then, the phenolic hydroxyls in the reaction mixture are neutralized with the above inorganic base and another aromatic dicarboxylic dichloride (B) other than component A such as isophthaloyl chloride is added thereto to produce the objective copolymer.


Inventors:
SHIMIZU SENZOU
NOMURA ISAO
USUI GENPACHI
HARADA MASAHIRO
Application Number:
JP17134480A
Publication Date:
June 15, 1982
Filing Date:
December 04, 1980
Export Citation:
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Assignee:
MITSUBISHI GAS CHEMICAL CO
International Classes:
C08G63/19; C08G63/00; C08G63/40; (IPC1-7): C08G63/22



 
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