Claims
- 1. A process for fabricating molded objects using a heat-curable epoxy resin system comprising (a) at least one epoxy resin, (b) at least one polycarboxylic acid anhydride, and (c) a combination of (1) 1,4-diazabicyclo(2,2,2)octane or a C.sub.1 -C.sub.4 alkyl-substituted derivative of 1,4-diazabicyclo(2,2,2)octane and (2) a complex of boron trichloride with N,N-dimethyloctylamine as a curing accelerator, wherein the weight ratio of (1) to (2) ranges from 8/92 to 75/25 , which comprises mixing at least some of the epoxy resin and at least some of (b) and (c) at a temperature below the curing temperature, and introducing said mixture under normal or elevated pressure, into a mold in which the temperature is sufficiently high to effect cure of the resin molding material.
- 2. A process according to claim 1, wherein uncured resin molding material is continuously introduced into the mold in such an amount as to compensate for any shrinkage of the resin molding material in the mold occurring in the course of the cure.
Priority Claims (1)
Number |
Date |
Country |
Kind |
720/94 |
Mar 1994 |
CHX |
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Parent Case Info
This is a DIVISIONAL of application Ser. No. 08/512,044 filed Aug. 7, 1995, now U.S. Pat. No. 5,597,886 which is a Continuation-In-Part of application Ser. No. 08/399,687 filed Mar. 7, 1995, now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3784647 |
Fleming et al. |
Jan 1974 |
|
3793247 |
Fleming et al. |
Feb 1974 |
|
4663072 |
Cheung |
May 1987 |
|
Non-Patent Literature Citations (1)
Entry |
Lee and Neville, "Handbook of Epoxy Resins", p. 9-3 Apr. 1967. |
Divisions (1)
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Number |
Date |
Country |
Parent |
512044 |
Aug 1995 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
399687 |
Mar 1995 |
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