Process for producing aromatic polyamide-imide

Details Process for producing aromatic polyamide-imide Process for producing aromatic polyamide-imide

1983-04-13

1984-05-15

Lee, Lester L.

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

Synthetic resins

From carboxylic acid or derivative thereof

528125, 528126, 528128, 528172, 528179, 528188, 528207, 528208, 528223, 528229, 528350, 528352, 528353, C08G 7314

Patent

active

044489579

ABSTRACT:
In a process for producing an aromatic polyamide-imide by polycondensation of an aromatic tricarboxylic acid and/or aromatic tricarboxylic anhydride and an aromatic diamine with heating in the presence of a dehydration catalyst, the improvement which comprises using a solvent containing sulfolane as a reaction medium.

REFERENCES:
patent: 3260691 (1966-07-01), Lavin et al.
patent: 3661832 (1972-05-01), Stephens
patent: 3663492 (1972-05-01), Behr
patent: 3920612 (1975-11-01), Stephens

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