Rubbery polymer with improved properties

摘要

This invention discloses a rubbery polymer having improved properties which is comprised of repeat units which are derived from (a) butyl acrylate, or optionally a mixture of butyl acrylate and 2-ethylhexyl acrylate containing up to about 40 percent 2-ethylhexyl acrylate, (b) at least one member selected from the group consisting of methyl methacrylate, ethyl methacrylate, methyl acrylate and ethyl acrylate, (c) acrylonitrile, (d) styrene and (e) a crosslinking agent; wherein a chemical agent or a copolymer containing hydroxyl groups, ester groups, amine groups or carboxylic acid groups is grafted onto said rubbery polymer. The grafting can be done in the presence or in the absence of a carrying polymer matrix which should be inert with regard to the grafting reaction. Fatty alcohols and ethylene vinyl acetate are representative examples of agents which can be grafted onto the rubbery polymer.