Tough high performance composite matrix

Details Tough high performance composite matrix Tough high performance composite matrix

1989-10-31

1992-10-27

Carrillo, Ana L.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525426, 525432, 525436, 525903, C08L 4908, C08J 508, C08K 304

Patent

active

051590298

ABSTRACT:
This invention is a semi-interpenetrating polymer network which includes a high performance thermosetting polyimide having a nadic end group acting as a crosslinking site and a high performance linear thermoplastic polyimide having the following repeating unit. ##STR1## wherein Z=C or SO.sub.2. Provided is an improved high temperature matrix resin which is capable of performing in the 200.degree. to 300.degree. C. range. This resin has significantly improved toughness and microcracking resistance, excellent processability, mechanical performance and moisture and solvent resistances.

REFERENCES:
patent: 4695610 (1987-09-01), Egli et al.
patent: 4981922 (1991-01-01), Sheppard et al.
patent: 4996101 (1991-02-01), Landis et al.
patent: 5098961 (1992-03-01), Pater

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