Process for producing graft polymer.

摘要

A process for producing a graft polymer is described which comprises mixing two or more constitutive polymers to be grafted, at least one of the constitutive polymers being an iodine- and/or bromine-containing polymer, in the absence of any peroxide in the temperature range of 130-300 DEG C while applying shear deformation. In one embodiment, a graft polymer, wherein an iodine-containing fluororubber is grafted on an ethylene-alpha-olefin copolymer can be obtained by mixing 30 parts by weight of an iodine-containing fluororubber (a vinylidene fluoride-hexafluoropropylene copolymer containing iodine) and 70 parts by weight of an ethylene-propylene copolymer rubber at 180 DEG C for 30 minutes while applying shear deformation using a Brabender mixer.