Phenolic resin-polyisocyanate binders

Details Phenolic resin-polyisocyanate binders Phenolic resin-polyisocyanate binders

1978-03-21

1979-12-18

Person, Sandra M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 293, 260 37N, 260 38, C08L 6114, C08L 7508

Patent

active

041794273

ABSTRACT:
Phenolic resin-polyisocyanate binder systems comprising aqueous emulsions of a phenolic resin and a liquid polyisocyanate and a tertiary amine or metal ion curing agent can be made and used free of organic solvents, thereby providing improved environmental conditions. These binders are useful as foundry core and mold binders in both cold box and no bake operations.

REFERENCES:
patent: 3409579 (1968-11-01), Robins
patent: 3428110 (1969-02-01), Walker
patent: 3702316 (1972-11-01), Robins
patent: 4051092 (1977-09-01), Holik et al.

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