Antifoams based on oil-in-water emulsions

Details Antifoams based on oil-in-water emulsions Antifoams based on oil-in-water emulsions

B - Operations, Transporting

01

D

134/56

B01D 19/04 (2006.01)

Patent

CA 1239327

Abstract of the Disclosure In antifoams based on oil-in-water emulsions, the oil phase of the emulsion contains (a) C12-C26 alcohols or distillation residues obtained in the preparation of alcohols by an oxosynthesis or by the Ziegler process and/or (b) fatty acid esters of C12-C22 carboxylic acids with monohydric, dihydric or trihydric C1-C18 alcohols, with or without (c) a hydrocarbon having a boiling point above 200°C or fatty acids of 12 to 22 carbon atoms, in which the oil phase comprises 15 to 60% by weight of the emulsion and has a mean droplet size of from 0.5 to 15 mm. The emulsions are stabilized by the addition of from 0.05 to 0.5% by weight, based on the total emulsion, of a high molecular weight water-soluble homopolymer or copolymer of acrylic acid, methacrylic acid, acrylamide or methacryl- amide.

472423

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