| abstract |
Foam control agents of the invention are organopolysiloxanes having one or more silicon-bonded substituents of formula X-Ph, wherein X represents a divalent aliphatic hydrocarbon group and Ph represents an optionally substituted aromatic group. Material (A), organosilicon resin (B) and hydrophobic filler (C). The organosilicon resin (B) is a siloxane unit of the formula R ' a SiO 4-a / 2 , where R' represents a hydroxyl, hydrocarbon or hydrocarbonoxy group and the value of a is from 0.5 to 2.4, in particular tree It is preferred to consist of alkylsiloxy units and SiO 4/2 units. Foaming agents can be provided as emulsions or granular materials. Foaming agents are particularly useful as detergent foaming agents. |