CATALYST COMPOSITIONS
The catalyst composition adjusts LCB content in olefin-based polymers by combining metallocene and activator supports, addressing the challenge of controlling LCB without affecting other polymer properties, thereby improving film toughness and processing characteristics.
Patent Information
- Authority / Receiving Office
- BR · BR
- Patent Type
- Patents
- Current Assignee / Owner
- CHEVRON PHILLIPS CHEMICAL COMPANY LP
- Filing Date
- 2022-12-06
- Publication Date
- 2026-07-07
AI Technical Summary
Existing metallocene-based catalyst systems for producing olefin-based polymers face challenges in controlling long-chain branching (LCB) content without significantly affecting other polymer properties like melt index and molecular weight distribution.
A catalyst composition is developed using a combination of a metallocene compound, an organoaluminum compound, a first activator support with high LCB, and a second activator support with low LCB, allowing for the adjustment of LCB content by varying the relative amounts of these supports.
This approach enables precise control of LCB content in olefin-based polymers without altering the metallocene component, enhancing properties such as tear resistance and melt resistance based on the application requirements.
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