Claims
- 1. Composite materials prepared from copolymers comprised of an ethynyl-substituted polyimide oligomer comprised of the following general structure ##STR5## n=0 to 5, m=0 to 5, and
- x=O, S, CH.sub.2, CO, SO.sub.2
- coreacted with less than 20% of a di- or polyethynyl-substituted diluent and a reinforcing fabric, filler or chopped fiber.
- 2. A new class of copolymers comprised of less than 20% by weight of a di- or polyethynyl-substituted diluent coreacted with an ethynyl substituted polyimide oligomer comprised of the following general structure ##STR6## n=0-5, m=0-5, and
- x=O,S, CH.sub.2, CO, SO.sub.2.
- 3. The copolymer of claim 2 wherein "n" is 2, "m" is 0, and said diluent is diethynylbenzene.
- 4. The copolymer of claim 2 wherein "n" is 2, "m" is 0, and said diluent is diethynyldiphenyl ether.
- 5. The material of claim 1 wherein "n"is 2, "m" is 0, and said diluent is diethynylbenzene.
- 6. The material of claim 1 wherein "n" is 2, "m" is 0, and said diluent is diethynyldiphenyl ether.
Government Interests
The invention herein described was made in the course of or under a contract or subcontract thereunder with the Department of the Air Force.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3845018 |
Bilow et al. |
Oct 1974 |
|
3864309 |
Bilow et al. |
Feb 1975 |
|