Process for the manufacture of a foundry core or mould

Details Process for the manufacture of a foundry core or mould Process for the manufacture of a foundry core or mould

1982-12-20

1984-03-13

Jacobs, Lewis T.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523146, C08K 336

Patent

active

044368445

ABSTRACT:
There is disclosed an improved process for the manufacture of a foundry core or mould, comprising forming into the foundry core or mould a composition comprising a granular filler, a synthetic resin which cures under the action of an acid and a desensitized ketone peroxide composition and treating said formed composition with sulphur dioxide, wherein the improvement comprises using as the desensitizing agent a dialkyl ester of an aliphatic dicarboxylic acid of the general formula ##STR1## wherein n=1-7 and R.sub.1 and R.sub.2 =a branched or non-branched alkyl group having 3 to 5 carbon atoms.

REFERENCES:
patent: 4176114 (1979-11-01), Stewart et al.

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