Chain transfer agents, processes for their preparation, and uses thereof, and polyolefin-polyester block copolymers and processes for their preparation
By controlling the copolymerization of olefin and cyclic ester monomers with a novel chain transfer agent, the problem of cumbersome copolymerization steps in existing technologies is solved, and controllable preparation of polyolefin-polyester block copolymers is achieved. These copolymers exhibit stability and biocompatibility, making them suitable for industrial production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA PETROLEUM & CHEMICAL CORP
- Filing Date
- 2024-12-19
- Publication Date
- 2026-06-23
AI Technical Summary
In the existing technology, the copolymerization between different monomers requires cumbersome intermediate purification and post-polymerization modification steps, making it difficult to achieve controllable copolymerization and resulting in difficulties in synthesizing complex polymer structures.
A novel chain transfer agent is used to prepare a chain transfer agent with the structure of formula (I) through a specific chemical reaction. The chain transfer agent is then used to control the copolymerization of olefin and cyclic ester monomers to prepare polyolefin-polyester block copolymers, including cationic polymerization, free radical polymerization and ring-opening polymerization steps.
A controllable copolymerization process was achieved, producing polyolefin-polyester block copolymers with controllable molecular weight and narrow molecular weight distribution. These copolymers exhibit a wide variety of material properties and are suitable for industrial production.
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Figure CN122255170A_ABST