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US 11,591,423 B2Granted
Method for producing aqueous polymer dispersions in a tube reactor
AssigneeWacker Chemie AG
InventorsHans-Peter Weitzel, Robert Braunsperger
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Abstract
Aqueous polymer dispersions are produced by radically initiated emulsion polymerization of ethylenically unsaturated monomers in the presence of protective colloids and/or emulsifiers in a continuously operated tubular reactor, characterized in that the direction of flow of the reactor contents is reversed along the longitudinal axis of the reactor over the course of polymerization.
Claims10
A process for producing an aqueous polymer dispersion, comprising:
- polymerizing ethylenically by radically initiated emulsion polymerization in the presence of protective colloids and/or emulsifiers in a continuously operated tubular reactor, wherein a direction of flow of the reactor contents is reversed along the longitudinal axis of the reactor at regular time intervals.
Dependencies are inferred from the claim text.