Defoamer composition for suppressing oil-based and...

Details Defoamer composition for suppressing oil-based and... Defoamer composition for suppressing oil-based and...

C - Chemistry, Metallurgy

09

C

C09C 1/30 (2006.01) B01D 19/04 (2006.01)

Patent

CA 2653846

Defoamer compositions effective for the suppression of oil-based and water-based foams. The defoamer compositions comprise a fumed metal oxide, such as fumed silica, or another silica-based material dispersed in an organic solvent. The fumed metal oxide of silica-based material is preferably present at a low weight percentage and may be coated with polydimethylsiloxane ("PDMS"). The defoamer composition may also include one or more traditional defoamer compositions.

La présente invention porte sur des formules antimousse pouvant être employées efficacement dans l'élimination de mousses huileuses et aqueuses. Les formules antimousse comprennent un oxyde métallique fumé, par exemple la silice fumée, ou un autre matériau à base de silice dispersé dans un solvant organique. L'oxyde métallique fumé de matériau à base de silice est préférentiellement présent à une teneur en poids faible, et peut être revêtu de polydiméthylsiloxane (<= PDMS >=). La formule antimousse peut également inclure une ou plusieurs formules antimousse classiques.

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