Antifoaming compositions

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...

Reexamination Certificate

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Details

C528S031000, C528S044000, C516S124000, C510S347000

Reexamination Certificate

active

08084566

ABSTRACT:
Mixtures of silicone resin with an organopolysiloxane copolymer prepared by hydrosilylating a substantially linear polymer containing an isocyanate reactive group with an Si—H containing organopolysiloxane, and reacting this intermediate with a diisocyanate, are useful as long lasting defoamers which are compatible with numerous media.

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English Abstract for DE102004052421, 2006.

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