| 摘要 |
An aqueous emulsion polymer suitable for use in thickening aqueous compositions including, as copolymerized units: from 8% to 25 wt %, based on polymer weight, acid-containing monomer, from 2% to 30 wt %, based on polymer weight, (meth)acrylic acid ester of the formula: H2C-C(R)-C(O)-O-(CH2-CH2O)n-Ro, wherein R is H or CH3, n is from 2 to 100 and Ro is a group containing from 4 to 36 carbon atoms, and from 35% to 90 wt %, based on polymer weight, (C1-C4) alkyl (meth)acrylate; wherein the polymer is formed by a living free radical polymerization process, alternatively in the presence of a compound containing the group -C(-S)-S-, is provided. An aqueous composition including the aqueous emulsion polymer and a polymeric coating including the polymer are also provided as are certain related processes.
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