Blends of alpha-olefin/vinylidene aromatic monomer and/or hindered aliphatic or cycloaliphatic vinylidene monomer interpolymers

摘要

Blends of polymeric materials comprising a plurality of substantially random interpolymers each interpolymer comprising: (1) from about 1 to about 65 mole percent of polymer units derived from either (a) at least one vinyl aromatic monomer or (b) at least one aliphatic or cycloaliphatic vinyl or vinylidene monomer, or (c) a combination of at least one vinyl aromatic monomer and at least one aliphatic or cycloaliphatic vinyl or vinylidene monomer, and (2) from about 35 to about 99 mole percent of polymer units derived from ethylene and/or at least one aliphatic alpha olefin having from 3 to 20 carbon atoms; and wherein: the amount of polymer units derived from vinyl aromatic monomer and/or aliphatic or cycloaliphatic vinyl or vinylidene monomer in any interpolymer component differs from that amount in another interpolymer component by at least 0.5 mole percent. These blends of interpolymer components give enhanced properties or processability when compared to the individual polymers comprising the blend.