Patent ID: 6410652
Filing Date: 2002-06-25
Classification: C08F,C10M

Abstract:
A method of making a graft copolymer, comprising the steps of:(a) introducing an ethylene/propylene (EP) copolymer or other graftable polymer into a screw extruder; (b) introducing into said extruder separately from said copolymer or other graftable polymer an ethylenically unsaturated monomer which is at least one selected from the group consisting of monomers containing one or more of the following: sulfur, nitrogen and oxygen, into the extruder as a mixture with a polar solvent such that the concentration of monomer in the mixture is 5-95% w/w; (c) introducing into the extruder an amount of an initiator sufficient to graft said monomer and EP copolymer or other graftable polymer; and (d) reacting said EP copolymer or other graftable polymer, said ethylenically unsaturated monomer and said initiator by operating said extruder, thereby forming the graft copolymer.