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US 12,404,407 B2Granted
Aqueous polyorganosiloxane hybrid resin dispersion
AssigneeEvonik Operations GmbH
InventorsMona Seyfried, Stefan Silber, Berend-Jan de Gans, Michael Fiedel, Markus Hallack
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Abstract
A process for producing an aqueous polyorganosiloxane hybrid resin dispersion includes emulsifying a polyorganosiloxane hybrid resin solution of a polyorganosiloxane hybrid resin and an organic or semi-organic solvent with an emulsifier solution that includes at least one emulsifier based on a partly hydrolysed polyvinylacetate and removing the organic or semi-organic solvent.
Claims15
A process for producing an aqueous polyorganosiloxane hybrid resin dispersion, comprising:
- a) emulsifying
- a polyorganosiloxane hybrid resin solution, comprising a polyorganosiloxane hybrid resin and an organic solvent, with
- water and an emulsifier solution or an aqueous emulsifier system, comprising at least one emulsifier comprising a partly hydrolysed polyvinylacetate, and
- b) removing the organic solvent by at least one process selected from the group consisting of distillation under reduced pressure with or without stripping gas, steam distillation, a membrane process, evaporation with a thin-film evaporator, and a counter-current process.
1 more element
Dependencies are inferred from the claim text.