Thermally adaptive polymers and prepolymers and methods of makin

Details Thermally adaptive polymers and prepolymers and methods of makin Thermally adaptive polymers and prepolymers and methods of makin

1987-07-27

1988-05-31

Welsh, Maurice J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549244, 549245, C07D30777

Patent

active

047482559

ABSTRACT:
Reaction of an aromatic dianhydride with a polycyclic aromatic primary diamine at a controlled reaction rate yields a diamic acid dianhydride oligomer. The oligomer may be a precursor for an imide foam which forms at low temperature, has outstanding physical characteristics, and is extremely heat resistant. The diamic acid moiety may be converted to diimide, and other modifications of the oligomer are disclosed. Other derivatives of the oligomers are also disclosed.

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