Antifoam based on oil-in-water emulsion

Details Antifoam based on oil-in-water emulsion Antifoam based on oil-in-water emulsion

B - Operations, Transporting

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134/56

B01F 17/00 (2006.01) B01D 19/04 (2006.01) B01F 17/02 (2006.01) B01F 17/42 (2006.01)

Patent

CA 1298754

Abstract of the Disclosure: In antifoams based on oil- in-water emulsions, the oil phase of the emulsions con- tains (a) a C12-C26-alcohol, a distillation residue which is obtainable in the preparation of alcohols having a relatively large number of carbon atoms by the oxo process or by the Ziegler process and which may fur- thermore be oxyalkylated and/or (b) a fatty acid ester of a C12-C22-carboxylic acid with a monohydric to trihydric C1-C18-alcohol and, if required, (c) a hydrocarbon having a boiling point above 200°C or a fatty acid of 12 to 22 carbon atoms, accounts for from 5 to 50% by weight of the emulsion and has a mean particle size of less than 25 mm, and from 5 to 50% by weight of components (a) and (b) of the oil phase are replaced by (d) one or more compounds which melt at above 70°C and are selected from the group consisting of the fatty alcohols of not less than 28 carbon atoms, the esters of a c1-c22-carboxylic acid with an alcohol of not less than 28 carbon atoms, the Polyethylene waxes having a molecular weight of not less than 2,000, the carnauba waxes, the montan ester waxes and the montanic acid waxes and their salts.

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