Invention Grant
- Patent Title: Dual catalyst system for producing LLDPE copolymers with a narrow molecular weight distribution and improved processability
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Application No.: US15973610Application Date: 2018-05-08
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Publication No.: US10442881B2Publication Date: 2019-10-15
- Inventor: Mark L. Hlavinka , Chung Ching Tso , Yongwoo Inn , Deloris R. Gagan , Randy S. Muninger
- 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: C08F210/16
- IPC: C08F210/16 ; C08F4/6592 ; C08L23/08 ; C08J9/228 ; C08F4/659
Abstract:
Disclosed herein are ethylene-based polymers generally characterized by a Mw ranging from 70,000 to 200,000 g/mol, a ratio of Mz/Mw ranging from 1.8 to 20, an 1B parameter ranging from 0.92 to 1.05, and an ATREF profile characterized by one large peak. These polymers have the dart impact, tear strength, and optical properties of a metallocene-catalyzed LLDPE, but with improved processability, melt strength, and bubble stability, and can be used in blown film and other end-use applications.
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