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US 11,897,982 B2Granted
Water-based polymer dispersions and uses thereof
AssigneeWacker Chemie AG
InventorsJin Zheng, Lingyun Huang, Yun Li, Haoqing Sun, Jiyang Zhang
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Abstract
Vinyl ester/ethylene copolymer aqueous dispersions containing an anionic polyacrylamide, at least one polyvinyl alcohol, and optionally a non-ionic surfactant, are useful in cementitious compositions as polymer additives.
Claims16
An aqueous polymer dispersion, comprising:
- i) a copolymer prepared by the polymerization of comonomers comprising a vinyl ester and ethylene,
- ii) an anionic polyacrylamide,
- iii) a polyvinyl alcohol, and
- iv) water,
- wherein the anionic polyacrylamide is present in an amount of at least 0.15 wt. %, based on the total weight of the vinyl ester and ethylene monomers.
2 more elements
Dependencies are inferred from the claim text.