Patent ID: 6984701

Claim:
A graft polymer comprising: (a) a hydrophilic polymeric segment; (b) a hydrophobic polymeric segment comprising a hydrophobic monomeric unit comprising an hydroxyalkyl methacrylate or an hydroxyalkyl acrylate; and (c) a stabilizing polymeric segment comprising an aromatic functional group, wherein the stabilizing polymeric segment comprises a stabilizing monomeric unit comprising nonylphenol acrylate; nonylphenol methacrylate; nonylphenoxy poly(propyleneoxy) n methacrylate, wherein n is from 1 to about 40; nonylphenoxy poly(propyleneoxy) n acrylate, wherein n is from 1 to about 40; or 2,4,6-tris-(1-phenylethyl)phenoxy poly(ethyleneoxy) n methoacrylate, wherein n is from about 1 to about 40.