Claims
- 1. A curable composition consisting essentially of:
- (A) at least one polyphenylene ether having a number average molecular weight of at least about 12,000 to about 40,000, and
- (B) an epoxy material selected from the group consisting of (B-1) at least one polyglycidyl ether of a bisphenolic compound, said polyglycidyl ether having an average of at most one aliphatic hydroxy group per molecule, and combinations of a major amount of said polyglycidyl ether with a minor amount of at least one of (B-2) aryl monoglycidyl ethers and (B-3) non-bisphenolic polyepoxy compounds; and
- (C) an effective amount of a curing catalyst comprising an aluminum or zinc salt of a diketone of the formula ##STR7## wherein each of R.sup.3 and R.sup.4 is C.sub.1-20 alkyl or aryl and R.sup.5 is hydrogen or C.sub.1-20 alkyl or aryl;
- said composition comprising from 5 up to about 90% by weight of component A, based on components A and B, and having no other reactive materials.
- 2. A composition according to claim 1 wherein R.sup.3 and R.sup.4 are each methyl, R.sup.5 is hydrogen and component A is a poly(2,6-dimethyl-1,4-phenylene ether).
- 3. A composition according to claim 2 wherein component C is aluminum tris(acetylacetonate) or zinc bis(acetylacetonate).
- 4. A composition according to claim 2 wherein the catalyst is present in amounts in the range of about 0.5-10% based on the total of components A and B.
- 5. A prepreg composition comprising a composition according to claim 2 and at least one filler.
- 6. A prepreg composition according to claim 5 wherein the filler is glass fiber.
- 7. A curable composition consisting essentially of:
- (A) at least one polyphenylene ether having a number average molecular weight of at least about 12,000 to about 40,000;
- (B) an epoxy material selected from the group consisting of (B-1) at least one polyglycidyl ether having an average of at most one aliphatic hydroxy group per molecule and combinations of a major amount of said polyglycidyl ether with a minor amount of at least one of (B-2) aryl monoglycidyl ethers and (B-3) non-bisphenolic polyepoxy compounds;
- (C) an effective amount of a curing catalyst comprising an aluminum or zinc salt of a diketone of the formula ##STR8## wherein each of R.sup.3 and R.sup.4 is C.sub.1-20 alkyl or aryl and R.sup.5 is hydrogen or C.sub.1-20 alkyl or aryl; and
- (D) at least one phenolic compound or basic nitrogen compound as a curing accelerator;
- said composition comprising from 5 up to about 90% by weight of component A based on components A and B, and having no other reactive materials.
- 8. A composition according to claim 7 wherein component D is a basic nitrogen compound and is present in an amount to provide about 1000-1500 ppm., based on components A, B, C and D, of basic, non-volatilized nitrogen.
- 9. A composition according to claim 7 wherein component D is tetramethylguanidine and is present in the amount of about 1500-2500 ppm., based on components A, B, C and D.
- 10. A cured composition prepared by the method of claim 9.
Parent Case Info
This application is a continuation of application Ser. No. 92,725, filed Sept. 3, 1987, now abandoned which is a continuation-in-part of application Ser. No. 907,426, filed Sept. 15, 1986, now abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (4)
Number |
Date |
Country |
56167050 |
Apr 1983 |
JPX |
58-84844 |
May 1983 |
JPX |
58-225150 |
Dec 1983 |
JPX |
83219217 |
Dec 1983 |
JPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
92725 |
Sep 1987 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
907426 |
Sep 1986 |
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