Cold-curing binder for foundry sand cores and molds

Details Cold-curing binder for foundry sand cores and molds Cold-curing binder for foundry sand cores and molds

1976-09-27

1978-01-03

Griffin, Ronald W.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

164 43, 260 336UB, 260DIG40, B22C 122, C08G 6348, C08G 7104

Patent

active

040665887

ABSTRACT:
A cold-curing binder for foundry sand cores and molds comprises (a) an oil-modified alkyd resin, said resin characterized by an oil component which comprises a mixture of tall oil fatty acid and linseed oil in the ratio of from about 20:80 to about 80:20 parts by weight, (b) a polyisocyanate component, and (c) a curing accelerator. The novel binders of this invention generate less objectionable odor during the casting operation and cure more rapidly than conventional binders.

REFERENCES:
patent: 3179990 (1965-04-01), Freeman
patent: 3255500 (1966-06-01), Engel et al.
patent: 3385345 (1968-05-01), Miraldi
patent: 3426831 (1969-02-01), Robins et al.
Patton, Alkyd Resin Technology Formulating Techniques and Allied Calculations, Interscience Publishers, 1962, p. 175.

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