Curable epoxy resin compositions and use in preparing formed, sh

Details Curable epoxy resin compositions and use in preparing formed, sh Curable epoxy resin compositions and use in preparing formed, sh

1987-09-11

1989-02-21

Jacobs, Lewis T.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523144, 523145, 523141, 528405, 164 16, 264 83, C08K 336, C08L 6302, B22C 900, B22C 3340

Patent

active

048065765

ABSTRACT:
Curable epoxy resin compositions are described which comprise a mixture of an acid curable epoxy resin and a minor amount of an oxidizing agent capable of reacting with sulfur dioxide to form a catalyst for curing said epoxy resin. The curable epoxy resin composition may contain solid particulate materials. The procedures for curing such epoxy resins as well as methods for forming sand cores and molds also are described. Sand cores and molds produced in accordance with the method of the invention have sufficient strength and hardness after a few seconds of curing for normal foundry applications.

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