Invention Grant
- Patent Title: Dual catalyst system for producing LLDPE copolymers with improved processability
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Application No.: US15723225Application Date: 2017-10-03
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Publication No.: US10358506B2Publication Date: 2019-07-23
- Inventor: Errun Ding , Chung C. Tso , Randall S. Muninger , Qing Yang , Youlu Yu , Yongwoo Inn
- Applicant: Chevron Phillips Chemical Company LP
- Applicant Address: US TX The Woodlands
- Assignee: Chevron Phillips Chemical Company LP
- Current Assignee: Chevron Phillips Chemical Company LP
- Current Assignee Address: US TX The Woodlands
- Agency: Merchant & Gould P.C.
- Main IPC: C08F4/653
- IPC: C08F4/653 ; C08F4/6592 ; C08F210/16 ; C08L23/08 ; C08F4/6192 ; C08F4/64 ; C08F10/02 ; C08F4/659

Abstract:
Disclosed herein are ethylene-based polymers generally characterized by a density from 0.89 to 0.93 g/cm3, a ratio of Mw/Mn from 3 to 6.5, a Mz from 200,000 to 650,000 g/mol, a CY-a parameter at 190° C. from 0.2 to 0.4, and a reverse short chain branching distribution. The ATREF profile of these polymers can have a high temperature peak from 92 to 102° C., and a low temperature peak from 18 to 36° C. less than that of the high temperature peak. These polymers can have comparable physical properties to that of a metallocene-catalyzed LLDPE, but with improved processability, shear thinning, and melt strength, and can be used in blown film and other end-use applications.
Public/Granted literature
- US20190100606A1 Dual Catalyst System for Producing LLDPE Copolymers with Improved Processability Public/Granted day:2019-04-04
Information query
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