Polymeric (meth)acrylate plasticizers and processing aids for elastomers

Claim 1

An elastomer composition, comprising: (A) at least one elastomer, (B) a plasticizer comprising at least one polymeric material having a weight average molecular weight, M w , of 500 to 1,000,000, and (C) a curing agent; wherein the at least one polymeric material is substantially permanent within the elastomer; and wherein the at least one polymeric material consists of: (i) at least one monormer unit selected from the group consisting of (meth)acrylic acid; C 10 -C 50 alkyl (meth)acrylates; and C 1 -C 50 alkyl (meth)acrylates substituted with a halogen, a nitro group, a cyano group, a haloalkyl group, a carboxy group, an amino group, an alkylamino group or a dialkylamino group; and (ii) optionally, at least one monomer unit selected from the group consisting of vinylaromatic monomers; vinylaromatic monomers substituted with a halogen, a nitro group, a cyano group, alkoxy group, a haloalkyl group, carbalkoxy group, a carboxy group, an amino group, an alkylamino group or a dialkylamino group; nitrogen-containing ring compounds and thio analogs thereof; nitrogen-containing ring compounds and thio analogs thereof substituted with a C 1 -C 8 alkyl group; vinyl acetate; vinyl chloride; vinyl fluoride; vinyl bromide; vinylidene chloride; vinylidene fluoride; vinylidenebromide;(meth)acrylonitrile; (meth)acrylamide; and dialkylaminoC 2 -C 6 alkyl(meth)acrylamindes.