Graft copolymers having anhydride functionality

摘要

An anhydride-functional polymer obtained by reacting under graft copolymerization reaction conditions, (A) an unsaturated polymer which was obtained by reacting under ene reaction conditions a mixture of reactants comprising: (i) an unsaturated anhydride having the structure: wherein R1 and R2 are each independently hydrogen, alkyl of 1 to about 6 carbons, or alkoxy of 1 to about 6 carbons, or a halogen; and (ii) at least one polyolefin having at least two carbon-carbon double bonds in the polyolefin backbone and having an average of at least three carbon atoms in the polyolefin backbone between the carbon-carbon double bonds; and (B) at least one ethylenically unsaturated monomer which is copolymerizable with the unsaturated polymer.