Binder for foundry process

Details Binder for foundry process Binder for foundry process

1977-05-09

1979-04-10

Person, Sandra M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

164 43, B22C 122, C08G 828, C08G 1828

Patent

active

041487770

ABSTRACT:
An improved binder composition for use in the foundry process comprises a mixture of low molecular weight essentially mononuclear methylolated phenols which are cured through a reaction with a polyisocyanate. In the preferred embodiment, a minor amount of polyether polyol, a mutual solvent and a catalyst, preferably an amine catalyst, is mixed with the phenolic component.

REFERENCES:
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patent: 3063964 (1962-11-01), Khawam
patent: 3282896 (1966-11-01), Einberg
patent: 3403721 (1968-10-01), Robins et al.
patent: 3409579 (1968-11-01), Robins
patent: 3428110 (1969-02-01), Walker
patent: 3485797 (1969-12-01), Robins
patent: 3632531 (1972-01-01), Rush et al.
patent: 3702316 (1972-11-01), Robins
Saunders and Frisch, Polyurethanes:Chemistry and Technology, Pt. I., vol. XVI, pp. 208-215.

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