Method for the preparation of foundry sand compositions

Details Method for the preparation of foundry sand compositions Method for the preparation of foundry sand compositions

1990-08-20

1991-10-22

Bell, Mark L.

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

106634, B28B 734

Patent

active

050592475

ABSTRACT:
A foundry sand composition that is self-hardening after a working life of about 10-20 minutes that is composed of a foundry sand, a sodium silicate binder and a specifically defined polyester polycarbonate hardener is prepared by:

REFERENCES:
patent: 4267120 (1981-05-01), Cuscurida et al.
patent: 4359507 (1982-11-01), Gaul et al.
patent: 4416694 (1983-11-01), Stevenson et al.
patent: 4488982 (1984-12-01), Cuscurida et al.
patent: 4773466 (1988-09-01), Cannarsa et al.
Encyclopedia of Science & Technology, McGraw-Hill, 5th Ed., pp. 392-396.
"Foundry Practice", Foseco International, Ltd., No. 213, Aug. 1986.

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