Silicone foam control compositions comprising a siloxane...

Details Silicone foam control compositions comprising a siloxane... Silicone foam control compositions comprising a siloxane...

2003-08-01

2008-08-05

Boyer, Charles I (Department: 1796)

Colloid systems and wetting agents; subcombinations thereof; pro

Compositions containing an agent for breaking ; processes of...

Continuous liquid phase colloid system and discontinuous gas...

C516S117000, C516S118000, C516S123000, C556S450000, C510S222000, C510S228000, C510S343000, C510S400000, C510S466000

Reexamination Certificate

active

07407991

ABSTRACT:
A foam control composition comprises a polydiorganosiloxane fluid comprising units of the formulawhere each group R, which may be the same or different, is selected from an alkyl group having 1 to 36 carbon atoms or an aryl group or aralkyl group having up to 36 carbon atoms, the mean number of carbon atoms in the groups R being at least 1.3, and an additive composition having a melting point of at least 35° C. comprising 5-50 parts by weight of a non-polar component (A) and 50-95 parts by weight of a component (B) which is miscible with component (A) and is more polar than component (A), at least one of (A) and (B) being miscible with the polysiloxane fluid.

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