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AssigneesDow Global Technologies LLC, Rohm and Haas Company
InventorsCharles J. Rand, Kebede Beshah, William J. Harris, Thomas Oswald, Jeffrey D. Weinhold
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The present invention provides amphiphilic comb polymer compositions of phosphorus acid group containing backbone polymers of methacrylic anhydride having hydrophobic alkyl, aryl, cycloalkyl or polyolefin ester or amide side chain groups formed on the backbone polymers and comprising from 75 to 100 wt. %, based on the total weight of monomers used to make the backbone polymer, of methacrylic acid polymerized units, wherein in the backbone polymer from 20 to less than 70 wt. %, preferably from 50 to 67 wt. % of the methacrylic acid polymerized units comprise methacrylic anhydride groups as determined by titration of the backbone polymer. As polymeric additives, the polymers can compatibilize polyolefins and polar polymers like polyesters.
An amphiphilic comb polymer composition comprising one or more phosphorus acid group containing backbone polymers of methacrylic anhydride having hydrophobic ester or amide side chains formed on the backbone polymers, wherein the backbone polymer comprises from 75 to 100 wt. %, based on the total weight of monomers used to make the backbone polymer, of methacrylic acid polymerized units, and, further wherein, in the backbone polymer from 20 to less than 70 wt. % of the methacrylic acid polymerized units comprise methacrylic anhydride groups as acid polymerized units, all methacrylic anhydride percentages as determined by titration of the backbone polymer prior to the formation of any ester or amide side chains
A method for making amphiphilic comb polymers of phosphorus acid group, containing backbone polymers of methacrylic anhydride having hydrophobic ester or amide side chains comprising:
Dependencies are inferred from the claim text.