Foam suppressants

Details Foam suppressants Foam suppressants

B - Operations, Transporting

01

D

134/55

B01D 19/04 (2006.01)

Patent

CA 1330029

Foam suppressants A b s t r a c t Agents which contain a) an ester of aliphatic carboxylic acids and aliphatic alcohols having a boiling point of at least 150°C and - based on a - b) 0.5-10% by weight of an amide of the formula Image (I) in which R stands for C10-C22-alkyl or -alkenyl, R' stands for H or C1-C4-alkyl, or the two R' together stand for an ethylene bridge, and R" stands for the radicals Image or -CH2-O-CH2-, wherein R"' stands for H, C1-C6-alkyl or phenyl, and c) 1-30% by weight of a non-ionic surfactant are used for removing foam, for preventing foam formation and for deaerating aqueous systems.

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