Antifoams and/or deaerators based on oil-in-water dispersions

Details Antifoams and/or deaerators based on oil-in-water dispersions Antifoams and/or deaerators based on oil-in-water dispersions

B - Operations, Transporting

01

D

B01D 19/04 (2006.01) D21C 3/28 (2006.01) D21H 21/12 (2006.01)

Patent

CA 2339837

The invention relates to a defoamer and/or deaerator based on oil-in-water emulsions which contain(s), in the hydrophobic oil phase, at least one compound that acts as a defoamer and/or deaerator, and optionally contain(s) other constituents. The oil-in-water emulsions contain 0.01 to 3 wt. % of a water-soluble, amphiphilic copolymer which comprises acid groups, or they contain a water-soluble salt thereof as a stabilizer.

L'invention concerne des agents antimoussants et/ou des désaérateurs à base d'émulsions huile dans eau qui contiennent dans la phase huileuse hydrophobe au moins un composé actif comme agent antimoussant et/ou désaérateur, et éventuellement d'autres constituants. Les émulsions huile dans eau contiennent comme stabilisant 0,01 à 3 % en poids d'un copolymérisat amphiphile hydrosoluble comportant des groupes acide, ou bien d'un sel hydrosoluble de celui-ci.

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