| 摘要 |
The present invention provides a silicone antifoaming agent composition excellent in the persistence of the foam controlling effect. The silicone antifoaming agent composition comprises a polydiorganosiloxane and silica, which form an antifoaming agent to be improved, and 4 to 2,500 parts by weight per 100 parts by weight of the sum total of the polydiorganosiloxane plus silica of a modified silicone oil having at least one organic group bonded to a silicon atom and having at least one functional group selected from among epoxy, amino, amide, carboxyl, alkoxyl and hydroxyl groups and at least one substituted or unsubstituted polyoxyalkylene group bonded to a silicon atom. |
