Title:
A polymerization method which uses the catalyst composition containing the mixed selectivity control agent and the catalyst composition
Document Type and Number:
Japanese Patent JP6023141
Kind Code:
B2
Abstract:
The present disclosure provides a Ziegler-Natta catalyst composition comprising a procatalyst, a cocatalyst and a mixed external electron donor comprising a first selectivity control agent, a second selectivity control agent and an activity limiting agent. A polymerization process incorporating the present catalyst composition produces a high-stiffness propylene-based polymer with a melt flow rate greater than about 50 g/10 min. The polymerization process occurs in a single reactor, utilizing standard hydrogen concentration with no visbreaking.
Inventors:
Chen, Rinfeng
Application Number:
JP2014204078A
Publication Date:
November 09, 2016
Filing Date:
October 02, 2014
Export Citation:
Assignee:
W. R. Grace and Company-Connecticut
International Classes:
C08F4/654; C08F10/00
Domestic Patent References:
| JP5105722A | ||||
| JP2007505984A | ||||
| JP63243107A | ||||
| JP11255822A | ||||
| JP3168224A |
Attorney, Agent or Firm:
Patent business corporation Odashima patent office