| 摘要 |
Disclosed is a water dispersible antifoam concentrate comprising a polydiorganosiloxane component; fine solid particles of inorganic oxide, bearing on the surface thereof a polydiorganosiloxane component; a nonionic emulsifier component; a thickener component; and optionally, water, at up to 5 wt. % of the concentrate if present therein; optionally, but preferably, solvent, and preservative or biocide. The antifoam concentrate can be dispersed with a pre-set amount of water, using moderate shear, to obtain a complete, storage stable, low cost antifoam emulsion, which can be used in agricultural, food, textile, waste water, liquid detergent and general industrial applications.
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