Aqueous silicone emulsion having utility as a mold release

Details Aqueous silicone emulsion having utility as a mold release Aqueous silicone emulsion having utility as a mold release

1993-04-06

1995-03-28

Marquis, Melvyn I.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524863, 524860, 524837, 524747, 524755, 524773, 524762, 524748, 252312, C08K 501, B01J 1300

Patent

active

054018013

ABSTRACT:
There is disclosed a novel silicone emulsion useful as a mold coating in aluminum die casting operations. The silicone emulsion of the invention comprises an aqueous dispersion of an organopolysiloxane of a particular general formula in combination with an alkyl diphenyl ether disulfate salt. The novel silicone emulsion of the invention exhibits stability even when diluted tens of times and subjected to mechanical shear. When applied to a heated mold surface, water is driven from the silicone emulsion and there is formed a oil film. The oil film allows for easy release of the cast part. Furthermore, the film exhibits good paintability and lubricity under extreme pressure.

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Patent Abstracts of Japan; vol. 11, No. 80; Mar. 11, 1987 titled Hydrophilic Film-Forming Aqueous Composition.

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