Heat curable foundry mixes and binder compositions

Details Heat curable foundry mixes and binder compositions Heat curable foundry mixes and binder compositions

1987-08-28

1988-12-06

Jacobs, Lewis T.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523146, 164 15, 524414, 524418, C08K 336

Patent

active

047896930

ABSTRACT:
This invention relates to heat curable foundry mixes and binder compositions particularly suitable for making foundry shapes by a hot box process. The binders used are aqueous basic solutions of phenolic resole resins. Salts are added to the binders or the sand to improve the tensile strength of foundry shapes made with the foundry mixes. Silicone compounds are added to the aggregate to improve the water resistance of foundry shapes made with the foundry mixes containing the binder and salt. The foundry shapes are used to prepare metal castings.

REFERENCES:
patent: 3306864 (1967-02-01), Lang
patent: 4426467 (1984-01-01), Quist et al.
patent: 4468359 (1984-08-01), Lemon et al.
patent: 4468486 (1984-08-01), Matsushima et al.
patent: 4474904 (1984-10-01), Lemon et al.
patent: 4584328 (1986-04-01), Madono

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