Loading patent…
AssigneeThe Dow Chemical Company
InventorsRichard E. Campbell, Jr., Mark H. McAdon, Peter N. Nickias, Jasson T. Patton, Oscar D. Redwine, Francis J. Timmers
Estimating the term…
The present invention relates to α-olefin/vinyl aromatic monomer interpolymers with characteristic signals in their carbon 13 NMR spectra. In particular, ethylene/styrene copolymers of the present invention have peaks in the carbon 13 NMR spectra which appear in the chemical shift range 43.70-44.25 ppm, preferably from 43.75-44.25 ppm and 38.0-38.5 ppm, said peaks being at least three times the peak to peak noise. The interpolymers are prepared by polymerizing the appropriate mixture of monomers in the presence of a catalyst such as racemic-(dimethylsilanediyl(2-methyl-4-phenylindenyl)) zirconium dichloride. The polymers of the present invention posses increased modulus as determined from both tensile stress/strain and dynamic mechanical data at comparable vinyl aromatic monomer levels.
An interpolymer comprising
An ethylene/styrene interpolymer having peaks of the carbon 13 NMR spectra which appear in the chemical shift range 43.70-44.25 ppm and 38.0-38.5 ppm, said peaks being at least three times the peak to peak noise.
A process for preparing α-olefin/vinyl aromatic monomer interpolymers said process comprising subjecting to Ziegler-Natta or Kaminsky-Sinn polymerization conditions, a combination of (1) one or more α-olefins, (2) one or more vinyl aromatic monomers, and (3) optionally, one or more polymerizable ethylenically unsaturated monomers other than (1) or (2);
A process for preparing α-olefin/vinyl aromatic monomer interpolymers said process comprising subjecting to Ziegler-Natta or Kaminsky-Sinn polymerization conditions, a combination of (1) one or more α-olefins, (2) one or more vinyl aromatic monomers, and (3) optionally, one or more polymerizable ethylenically unsaturated monomers other than (1) or (2);
Dependencies are inferred from the claim text.