Sulfur acid functionalized latex polymer
US9303160B2 · kind B2 · utility
0Cited by
6References
6Claims
0Family size
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Key dates
| Filing date | Dec 17, 2012 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Dec 17, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2201/54
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is a process for preparing a multistage polymer by contacting under emulsion polymerization conditions an acrylic monomer, a sulfur acid monomer, and a phosphorous acid monomer as described herein. The present invention is also a composition comprising a nonionic surfactant and a stable aqueous dispersion of polymer particles comprising structural units of butyl acrylate, methyl methacrylate, a sodium vinylbenzenesulfonate, and phosphoethyl methacrylate; wherein the polymer particles have a Tg of less than 10° C. The composition of the present invention is useful as a binder for coatings compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.