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US 2021/0230459 A1Published application
Additive composition for aqueous dispersions of hydrophobic polymers
AssigneeBASF SE
InventorsBernd HOEVEL, Karl-Heinz SCHUMACHER
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Abstract
Described are compositions comprising a defoamer mixture comprising mineral oil and hydrophobic particles such as for example wax particles; di- or monoalkyl sulfosuccinate having at least 9 carbon atoms in the alkyl group and certain ethylene oxide/propylene oxide block copolymers. Also described are aqueous dispersions of hydrophobic polymers comprising these compositions and the use of the aqueous polymer dispersions as an adhesive, for example for producing composite films from transparent polymer films.
Claims17
A composition, comprising:
- (A) a defoamer mixture comprising (i) an oil selected from the group consisting of an aromatics-free white oil, a natural fatty acid oil, and mixtures thereof and (ii) hydrophobic particles;
- (B) a di- or monoalkyl sulfosuccinate, wherein each alkyl group independently has at least 9 carbon atoms;
- and
- (C) an ethylene oxide/propylene oxide block copolymer having a molecular weight of 1000 to 3000 and an ethylene oxide proportion of 10% to 40% by weight based on the block copolymer.
1 more element
Dependencies are inferred from the claim text.