Terminal-modified imide oligomer and solution composition of the

Details Terminal-modified imide oligomer and solution composition of the Terminal-modified imide oligomer and solution composition of the

1988-08-24

1990-10-16

Kight, III, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528179, 528182, 528188, 528222, 528224, 528229, 528352, 528353, C08G 6926, C08G 6300, C08G 200, C08G 1200

Patent

active

049636456

ABSTRACT:
A terminal-modified imide oligomer having an unsaturated group as a terminal group and an imide bond inside of the oligomer which is produced by reacting 2,3,3',4'-or 3,3',4,4'-biphenyltetracarboxylic acid or its derivative, a diamine compound, and an unsaturated dicarboxylic acid or its derivative and/or an unsaturated monoamine in an organic solvent is disclosed. This oligomer has a logarithmic viscosity of not more than 1.0. This logarithmic viscosity is measured under the conditions of concentration of 0.5 g/100 ml-solvent (N-methyl-2-pyrrolidone) and a temperature of 30.degree. C., and has a melting point of 50.degree. to 300.degree. C.

REFERENCES:
patent: 4061856 (1977-12-01), Hsu
patent: 4159262 (1979-06-01), Hsu
patent: 4173700 (1979-11-01), Green

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