Back to results
US 8,263,692 B2Granted
Propylene-based polymer, articles, and process for producing same
AssigneeDow Global Technologies LLC
InventorsWilliam G. Sheard, Linfeng Chen
Life of this patent
Estimating the term…
Abstract
Disclosed are propylene-based polymer compositions and processes for producing same. Polymerization with an improved catalyst composition provides a propylene-based polymer with improved stiffness.
Claims14
A composition comprising:
- a propylene homopolymer;
- and
- a substituted phenylene aromatic diester that is 3-methyl-5-tert butyl-1,2 phenylene dibenzoate.
A composition comprising:
- a non-nucleated propylene homopolymer comprising a substituted phenylene aromatic diester comprising 3-methyl-5-tert butyl-1,2 phenylene dibenzoate and having a polydispersity index less than 6.0, a flexural modulus greater than 283 kpsi and a melt flow rate greater than or equal to 50 g/10 min as measured in accordance with ASTM D 1238 (230° C., 2.16 kg);
- and
- an oligomer content of less than 1800 ppmw.
A propylene impact copolymer comprising:
- a propylene homopolymer;
- a propylene/ethylene copolymer dispersed within the propylene homopolymer;
- and
- a substituted phenylene aromatic diester that is 3-methyl-5-tert butyl-1,2 phenylene dibenzoate.
1 more element
Dependencies are inferred from the claim text.