Claims
- 1. An epoxy resin composition comprising
- (A) a polyepoxide;
- (B) a cure inhibitor consisting essentially of boric acid in an amount from about 0.01 to about 2.0 parts per 100 parts of polyepoxide;
- (C) optionally an epoxy resin catalyst; and
- (D) optionally an epoxy resin curing agent which does not contain phenolic hydroxyl moieties.
- 2. An epoxy resin composition of claim 1 which further comprises a curing agent which does not contain phenolic hydroxyl moieties.
- 3. The epoxy resin composition of claim 2 which further comprises an epoxy resin catalyst comprising an amine, heterocyclic nitrogen containing phosphine, sulfide, ammonium, phosphonium or sulfonium containing compound capable of accelerating the cure of the polyepoxide with a curing agent.
- 4. The epoxy resin composition of claim 3 wherein the catalyst is an amine or heterocyclic nitrogen containing compound.
- 5. The epoxy resin composition of claim 4 wherein the catalyst is a tertiary amine containing compound or a heterocyclic amine.
- 6. The epoxy resin composition of claim 5 wherein the catalyst is 2-methyl imidazole; 2-ethyl, 4-methyl imidazole or 2-phenyl imidazole.
- 7. An epoxy resin composition of claim 5 wherein between about 0.01 to 2.0 parts of tertiary amine or heterocyclic amine containing compound per hundred parts of resin are present.
CROSS REFERENCE TO RELATED APPLICATION
This is a division from copending application Ser. No. 07/526,487 filed May 21, 1990, abandoned.
US Referenced Citations (25)
Foreign Referenced Citations (6)
Number |
Date |
Country |
236117 |
Feb 1960 |
AUX |
600187 |
Feb 1972 |
CAX |
893191 |
Feb 1972 |
CAX |
58-138729 |
Aug 1983 |
JPX |
963058 |
Sep 1960 |
GBX |
915704 |
Jan 1963 |
GBX |
Non-Patent Literature Citations (2)
Entry |
Proposed Mechanism for the Curing of Epoxy Resins with Amine-Lewis Acid Complexes or Salts by James J. Harris and Samuel C. Temin, J. Ap. Pol. Sc., vol. 10, pp. 523-534 (1966). |
On the thermal behaviour of some alkylammonium tetrafluoroborates by Zabinsa, Ferloni and Sanesi, Journ. Calorim., Anal. Therm. Thermodyn. Chim., v. 17, pp. 250-253 (1986). |
Divisions (1)
|
Number |
Date |
Country |
Parent |
526487 |
May 1990 |
|