| abstract |
[PROBLEMS] To provide an efficient foam control agent based on an organopolysiloxane. A) One silicon-bonded substituent of the formula X-Ph (X represents a divalent aliphatic organic group bonded to silicon via carbon, and Ph represents an aromatic group which may be substituted) An emulsion or granular foam control agent comprising the above organopolysiloxane material, B) a water-insoluble organic liquid, C) an organosilicone resin and D) a hydrophobic filler. Further, a foam control agent wherein the material A is a polydiorganosiloxane containing 50% or more of each of the diorganosiloxane units of the general formula 1 and less than 50% of the general formula 2. (Y is a C1-4 alkyl group, Y 'is a C1-24 aliphatic hydrocarbon group) |