Foundry mixes based upon reclaimed sand

Details Foundry mixes based upon reclaimed sand Foundry mixes based upon reclaimed sand

1993-01-08

1994-12-27

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523146, 523216, 524596, C08K 334

Patent

active

053766962

ABSTRACT:
The subject invention relates to foundry mixes comprised of (a) an aqueous basic solution of a phenolic resole resin; (b) a major amount of reclaimed sand which has first been treated with an aqueous non halogenated surfactant solution, and (c) a liquid ester co-reactant.

REFERENCES:
patent: 4055528 (1977-10-01), Kim
patent: 4468486 (1984-08-01), Matsushima
patent: 4568728 (1986-02-01), Kopac et al.
patent: 4996249 (1991-02-01), Johnson et al.
patent: 5238976 (1993-08-01), Iyer

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