Aqueous emulsions containing organohydropolysiloxanes
AssigneeWacker Chemie AG
InventorsMichael Geck, Enno Funk, Petra Stinglhammer, Bernward Deubzer, Gerhard Preiner
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Abstract
The invention relates to aqueous emulsions containing (A) organo-hydrogenated polysiloxanes optionally mixed with organopolysiloxanes free of Si linked hydrogen and organyloxy groups, (B) organopolysiloxanes containing organyloxy groups as stabilizers, (C) emulsifiers and (D) water.
Claims14
Storage stable, aliphatic aldehyde-free aqueous emulsions, comprising:
- (A) organohydrogenpolysiloxanes alone or in a mixture with organopolysiloxanes free from Si-bonded hydrogen and organyloxy groups,
- (B) 0.1 to 10% by weight of organopolysiloxanes containing organyloxy groups, as stabilizers,
- (C) emulsifiers, and
- (D) water.
A storage stable, aqueous emulsion, comprising:
- (A) organohydrogenpolysiloxanes alone or in a mixture with organopolysiloxanes free from Si-bonded hydrogen and organyloxy groups,
- (B) 0.1 to 10% by weight of organopolysiloxanes containing organyloxy groups, as stabilizers,
- (C) emulsifiers,
- (D) water, and
- (E) formaldehyde and no other aldehydes.
A process for preparing stable aqueous emulsions of Si—H functional polyorganosiloxanes, comprising mixing (A) organohydrogenpolysiloxanes, optionally in admixture with organopolysiloxanes free from Si-bonded hydrogen and organyloxy groups, (B) from 0.01 to 10 weight percent of one or more organopolysiloxanes containing organyloxy groups, (C) emulsifiers, (D) water and also, if desired, (E) additives, to form a stable emulsion which exhibits less hydrogen gas generation than a comparable formulation not containing said organopolysiloxanes containing organoyloxy groups (B).
Dependencies are inferred from the claim text.