Foundry no-bake combination resin binder

Details Foundry no-bake combination resin binder Foundry no-bake combination resin binder

1980-12-10

1982-03-02

Pertilla, Theodore E.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

523143, 523145, 524541, C08L 6114

Patent

active

043178960

ABSTRACT:
A binder for foundry aggregate capable of being catalytically cured with a polyisocyanate and an alkaline catalyst comprising in combination, as a major portion, a butylated phenol-formaldehyde resin, a lesser amount of a resole resin and a still lesser amount of a novolac resin.

REFERENCES:
patent: 3676392 (1972-11-01), Robins
patent: 3726867 (1973-04-01), Robins
patent: 3966670 (1976-06-01), Grazen et al.
patent: 4116916 (1978-09-01), Holik
patent: 4172068 (1979-10-01), Holik et al.

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