Silicone antifoaming agent composition

Details Silicone antifoaming agent composition Silicone antifoaming agent composition

1990-11-06

1996-09-17

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524188, 524268, 524864, 252358, 252321, C08K 515

Patent

active

055569021

ABSTRACT:
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.

REFERENCES:
patent: 2744079 (1956-05-01), Kilbourne et al.
patent: 4433096 (1984-02-01), Bokerman et al.
patent: 4514319 (1985-04-01), Kulkami et al.
patent: 4639489 (1987-01-01), Aizawa et al.
patent: 4742101 (1988-05-01), Yoshida
patent: 4762640 (1988-08-01), Schiefer
patent: 4961877 (1990-10-01), Shimizu et al.
JP-A-59/069110--Shinetsu Kagaku Kogyo.

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