SULFUR ACID FUNCTIONALIZED LATEX POLYMER

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...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BROWNELL, ARNOLD STAN, BOHLING, JAMES CHARLES, FINEGAN, CATHERINE ANN
Format: Patent
Sprache:eng ; fre
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Beschreibung
Zusammenfassung: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.