Invention Publication
- Patent Title: DUAL METALLOCENE POLYETHYLENE WITH IMPROVED PROCESSABILITY FOR LIGHTWEIGHT BLOW MOLDED PRODUCTS
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Application No.: US18487175Application Date: 2023-10-16
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Publication No.: US20240052073A1Publication Date: 2024-02-15
- Inventor: Jeremy M. Praetorius , Yongwoo Inn , Alfred E. Brown, JR. , Brandy Rutledge-Ryal , Carlos A. Cruz , Jay M. Chaffin
- 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
- Main IPC: C08F210/02
- IPC: C08F210/02 ; C08F210/16 ; C08L23/08

Abstract:
Ethylene-based polymers having a density of 0.952 to 0.968 g/cm3, a ratio of HLMI/MI from 185 to 550, an IB parameter from 1.46 to 1.80, a tan δ at 0.1 sec−1 from 1.05 to 1.75 degrees, and a slope of a plot of viscosity versus shear rate at 100 sec−1 from 0.18 to 0.28 are described, with low melt flow versions having a HLMI from 10 to 30 g/10 min and a Mw from 250,000 to 450,000 g/mol, and high melt flow versions having a HLMI from 30 to 55 g/10 min and a Mw from 200,000 to 300,000 g/mol. These polymers have the processability of chromium-based resins, but with improved stress crack resistance and topload strength for bottles and other blow molded products.
Public/Granted literature
- US12275809B2 Dual metallocene polyethylene with improved processability for lightweight blow molded products Public/Granted day:2025-04-15
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