Method for hardening a composition particularly intended for mak

Details Method for hardening a composition particularly intended for mak Method for hardening a composition particularly intended for mak

1979-03-12

1981-05-26

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260DIG40, C08L 6106

Patent

active

042697581

ABSTRACT:
The invention has for its object a method for the hardening of a composit particularly intended for making foundry cores and moulds including the known steps of gasifying this composition by SO.sub.2 and the introduction into the composition of an agent for oxidizing SO.sub.2 characterized in that the SO.sub.2 is insufflated diluted with another gas of lower diffusibility.

REFERENCES:
patent: 3639654 (1972-02-01), Robins
patent: 3879339 (1975-04-01), Richard
patent: 4105725 (1978-08-01), Ross
patent: 4112515 (1978-09-01), Sandow
patent: 4132260 (1979-01-01), Luber

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