Method for manufacturing foundry sand cores and molds

Details Method for manufacturing foundry sand cores and molds Method for manufacturing foundry sand cores and molds

1975-10-30

1980-01-22

Person, Sandra M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

164 43, 260 37EP, 260 38, 260 4252, 260 39R, 260 40R, C08K 501, C08K 505, C08K 507, C08K 510

Patent

active

041850025

ABSTRACT:
A method for manufacturing foundry sand cores and molds, which comprises preforming a foundry sand mixture comprising sand, a vinyl acetate resin and an organic solvent for said resin and optionally a resin selected from the group consisting of aromatic thermoplastic resins and aromatic thermosetting resins, and thereafter removing said solvent from the preformed foundry sand mixture by evaporation.

REFERENCES:
patent: 2628394 (1953-02-01), Valyi
patent: 2790722 (1957-04-01), Kohl et al.
patent: 2902458 (1959-09-01), Teppema
patent: 3005244 (1961-10-01), Erdle et al.
patent: 3943089 (1976-03-01), Harpula et al.

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