Silicone foam control agent

Details Silicone foam control agent Silicone foam control agent

C - Chemistry, Metallurgy

08

L

C08L 83/04 (2006.01) B01D 19/04 (2006.01) C11D 3/00 (2006.01) C11D 3/16 (2006.01) C11D 3/37 (2006.01)

Patent

CA 2315590

A foam control agent comprises (A) an organopolysiloxane material having at least one silicon-bonded substituent of the formula X-Ph, wherein X denotes a divalent aliphatic hydrocarbon group and Ph denotes an optionally substituted aromatic group, (B) an organosilicon resin and (C) a hydrophobic filler. The organosilicon resin (B) preferably consists of siloxane units of the formula R'a SiO4-a/2 wherein R' denotes a hydroxyl, hydrocarbon or hydrocarbonoxy group, particularly trialkylsiloxy units and SiO4/2 units, wherein a has a value of from 0.5 to 2.4. The foam control agent may be provided as an emulsion or as a particulate material. It is especially useful as a detergent foam control agent.

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