Claims
- 1. A composition comprising:
- (a) from 5 to 60 wt% of a diamine hardener represented by the following general formula: ##STR13## wherein the X's are independently selected from a direct bond, O, S, SO.sub.2, CO, COO, C(CF.sub.3).sub.2, C(CR.sub.1 R.sub.2).sub.2 wherein R.sub.1 and R.sub.2 are independently hydrogen or alkyl of 1 to 4 carbon atoms,
- (b) from 10 to 60 wt% of an epoxy resin containing two or more 1,2-epoxy groups per molecule, and
- (c) from 1 to 25 wt% of a thermoplastic polymer, and which contains a structural fiber selected from carbon, glass, silicon carbide, poly(benzothiazole), poly(benzimidazole), poly(benzoxazole), alumina, titania, boron, and aromatic polyamides.
- 2. A composition comprising:
- (a) from 5 to 60 wt% of a diamine hardener represented by the following general formula: ##STR14## wherein the X's are independently selected from a direct bond, O, S, SO.sub.2, CO, COO, C(CF.sub.3).sub.2, C(CR.sub.1 R.sub.2).sub.2 wherein R.sub.1 and R.sub.2 are independently hydrogen or alkyl of 1 to 4 carbon atoms,
- (b) from 10 to 60 wt% of bis(2,3-epoxycyclopentyl)ether, and
- (c) from 1 to 25 wt% of a thermoplastic polymer, which contains a structural fiber.
- 3. A prepreg comprising:
- (a) from 5 to 60 wt% of a diamine hardener represented by the following general formula: ##STR15## wherein the X's are independently selected from a direct bond, O, S, SO.sub.2, CO, COO, C(CF.sub.3).sub.2, C(CR.sub.1 R.sub.2).sub.2 wherein R.sub.1 and R.sub.2 are independently hydrogen or alkyl of 1 to 4 carbon atoms,
- (b) from 10 to 60 wt% of an epoxy resin containing two or more 1,2-epoxide groups per molecule,
- (c) from 1 to 25 wt% of a thermoplastic polymer and
- (d) from 5 to 85 wt% of a structural fiber.
- 4. A prepreg as defined in claim 3 which contains an accelerator which increases the rate of cure.
- 5. A composite comprising:
- (a) from 10 to 60 wt% of a cured epoxy resin containing two or more 1,2-epoxide groups per molecule hardened with
- (b) from 5 to 60 wt% of a diamine hardener represented by the following general formula: ##STR16## wherein the X's are independently selected from a direct bond, O, S, SO.sub.2, CO, COO, C(CF.sub.3).sub.2, C(CR.sub.1 R.sub.2).sub.2 wherein R.sub.1 and R.sub.2 are independently hydrogen or alkyl of 1 to 4 carbon atoms,
- (c) from 1 to 25 wt% of a thermoplastic polymer, and
- (d) from 5 to 85 wt% of a structural fiber.
- 6. A composite as defined in claim 5 wherein the epoxy resin was cured in the presence of an accelerator which increased the rate of cure.
Parent Case Info
This application is a division of prior U.S. application Ser. No. 690,405 filed 1/10/85, now U.S. Pat. No. 4,661,559 which is a continuation of application Ser. No. 496,398 filed 5/20/83, now abandoned.
US Referenced Citations (2)
Foreign Referenced Citations (4)
Number |
Date |
Country |
53-98400 |
Aug 1978 |
JPX |
54-64599 |
May 1979 |
JPX |
55-155703 |
Dec 1980 |
JPX |
1306231 |
Feb 1973 |
GBX |
Non-Patent Literature Citations (1)
Entry |
Sergeyev et al., Polymer Science, U.S.S.R., vol. 25, No. 6, pp. 1523-1529. |
Divisions (1)
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Number |
Date |
Country |
Parent |
690405 |
Jan 1985 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
496398 |
May 1983 |
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