Process for producing aromatic polyester amide

Details Process for producing aromatic polyester amide Process for producing aromatic polyester amide

1981-12-22

1983-06-07

Lee, Lester L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528172, 528180, 528181, 528182, 528183, 528184, 528194, 528206, 528207, 528208, 528210, 528211, 528292, C08G 6944

Patent

active

043872107

ABSTRACT:
An aromatic polyester amide is produced by reacting hydroxyphenyl-aminophenyl-propane with aromatic dicarboxylic acid dihalide in the presence of an inert organic solvent, and bringing the organic solvent phase containing the mixture of the reaction products of the above reaction into contact with an aqueous phase containing an acid-acceptor, whereby completing polycondensation reaction. In order to control the dissolution of water into the organic solvent phase while maintaining an adequate level of miscibility between the organic solvent phase and the aqueous phase, a neutral salt of inorganic electrolyte, such as sodium chloride, is added to the aqueous phase containing the acid-acceptor.

REFERENCES:
patent: 3440218 (1969-04-01), Caldwell
patent: 3859251 (1975-01-01), Kuhfuss et al.
patent: 4075179 (1978-02-01), Karkoski et al.

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