Use of stearic acid esters of polypropylene glycol to...

Details Use of stearic acid esters of polypropylene glycol to... Use of stearic acid esters of polypropylene glycol to...

B - Operations, Transporting

01

D

B01D 19/04 (2006.01) B03D 1/008 (2006.01) B03D 1/02 (2006.01) B03D 1/08 (2006.01)

Patent

CA 2232395

Stearic acid monoesters and diesters of polypropylene glycol (PPG), together with a hydrocarbon diluent, give exceptional defoaming performance in mineral processing streams over defoaming compositions made with esters of other fatty acids. The defoaming ability of compositions made from stearic acid esters of PPG is further enhanced by the inclusion of a relatively small amount of a non- ionic dispersing surfactant.

Des monoesters d'acide stéarique et des diesters de polypropylène glycol (PPG), associés à un diluant hydrocarbure, présentent des qualités exceptionnelles en matière de démoussage dans des flux de traitements minéraux, qualités supérieures à celles de compositions de démoussage à base d'esters d'autres acides gras. L'aptitude à démousser de ces compositions à base d'esters d'acide stéarique de PPG est, en outre, renforcée par l'adjonction d'une quantité relativement faible d'un tensioactif dispersant non ionique.

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