Colloid systems and wetting agents; subcombinations thereof; pro – Compositions containing an agent for breaking ; processes of... – Continuous liquid phase colloid system and discontinuous gas...
Patent
1998-06-26
1999-06-29
Shaver, Paul F.
Colloid systems and wetting agents; subcombinations thereof; pro
Compositions containing an agent for breaking ; processes of...
Continuous liquid phase colloid system and discontinuous gas...
A23L 100
Patent
active
059160900
ABSTRACT:
Provided by the invention is a silicone-based oil compound as a base of a defoaming agent of, for example, an emulsion type in an aqueous medium containing a surface active agent capable of exhibiting excellent sustainability of the defoaming activity and stability against dilution. The oil compound comprises (A) from 30 to 98.9% by weight of an .alpha.,.omega.-dihydroxy dimethyl polysiloxane, (B) from 0.1 to 20% by weight of a poly(methyl hydroxy siloxane, such as 1,1,1,3,5,7,7,7-octamethyl-3,5-dihydroxy tetrasiloxane and (C) from 1 to 50% by weight of a finely divided silica powder having a specific surface area of at least 100 m.sup.2 /g.
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Itagaki Akinari
Kuwata Satoshi
Shaver Paul F.
Shin-Etsu Chemical Co. , Ltd.
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