Patent ID: 7816470
Filing Date: 2010-10-19
Classification: C08F,C09D

Abstract:
1. A copolymer prepared by polymerizing in an aqueous medium one or more polymerizable ethylenically unsaturated monomers in the presence of a macromonomer that is comprised of at least 30 mole percent of residues having the following alternating structural units: wherein DM represents a residue from a donor monomer, AM represents a residue from an acceptor monomer, at least 15 mole percent of the macromonomer comprises a donor monomer of the structure: wherein R 1 is a linear or branched C 1 to C 4 alkyl, R 2 is selected from linear, cyclic or branched C 1 to C 20 alkyl, alkenyl, C 6 to C 20 aryl, alkaryl and aralkyl, wherein the macromonomer is substantially free of maleate monomer segments and fumarate monomer segments, and the macromonomer is substantially free of Lewis acids and transition metals.