Patent · US Active

Self limiting catalyst composition and propylene polymerization process

US7989383B2 · kind B2 · utility

4Cited by
53References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 4, 2010
Grant dateAug 2, 2011
Priority date—
Expiry dateAug 4, 2030

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB01J31/143
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; a selectivity control agent (SCA) comprising at least one silicon containing compound containing at least one C1-10 alkoxy group bonded to a silicon atom, and one or more activity limiting agent (ALA) compounds comprising one or more aliphatic or cycloaliphatic carboxylic acids; alkyl-, cycloalkyl- or alkyl(poly)(oxyalkyl)-(poly)ester derivatives thereof; or inertly substituted derivatives of the foregoing.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.