Patent Number: 6,166,145

Title: Blends of .alpha.-olefin/vinyl aromatic monomer and/or aliphatic or cycloaliphatic vinyl or vinylidene monomer interpolymers

Abstract: 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.

Inventors: Guest; Martin J. (Lake Jackson, TX), Cheung; Yunwa W. (Lake Jackson, TX), Gathers; John J. (Pearland, TX), Chum; Pak-Wing S. (Lake Jackson, TX)

Assignee: The Dow Chemical Company

International Classification: C08L 23/04 (20060101); C08L 23/00 (20060101); C08L 25/00 (20060101); C08L 23/08 (20060101); C08L 25/02 (20060101); C08L 025/08 (); C08L 023/00 (); C08L 045/00 ()

Expiration Date: 12/26/2017