Heat cured foundry binder systems and their uses

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

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524557, 524596, B22C 0122

Patent

active

056123922

ABSTRACT:
This invention relates to a heat cured foundry binder system comprising as separate components (A) a furan resin, and (B) an effective amount of a curing catalyst composition comprising water, a copper aryl sulfonate, a aryl sulfonic acid, preferably polyvinyl alcohol, and a copper halide.

REFERENCES:
patent: 4162238 (1979-07-01), Bergna
patent: 4317763 (1982-03-01), Menting
patent: 4318840 (1982-03-01), Doyle et al.
patent: 4451577 (1984-05-01), Coss
patent: 4761441 (1988-08-01), Woodson
patent: 4929649 (1990-05-01), Torbus et al.
patent: 5457142 (1995-10-01), Dando et al.

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