Cycloheptatrienone derivatives
By using cycloheptatrienolone derivatives as living radical polymerization control agents, the problems of coloring and odor caused by transition metals, sulfur, and tellurium in existing technologies have been solved, enabling precise control of polymer molecular weight and molecular weight distribution, reducing costs and improving safety.
CN122319136APending Publication Date: 2026-06-30TOAGOSEI CO LTD +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- TOAGOSEI CO LTD
- Filing Date
- 2024-11-22
- Publication Date
- 2026-06-30
AI Technical Summary
Technical Problem
Existing living radical polymerization methods such as ATRP, RAFT and TEP suffer from problems such as coloring, sulfur odor and tellurium odor caused by transition metals, resulting in high costs and safety hazards, necessitating the development of new polymerization control agents.
Method used
Cycloheptatrienolone derivatives were used as living radical polymerization controllers to precisely control the molecular weight and molecular weight distribution of polymers through their reaction with monomers.
Benefits of technology
An active free radical polymerization control agent that does not easily cause discoloration and odor is provided, which can effectively control the molecular weight and molecular weight distribution of polymers, reduce costs and improve safety.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122319136A_ABST
Abstract
This invention provides a cycloheptatrienolone derivative of formula (1). In formula (1), R 1 It can be a hydrogen atom, a cyano group, a monovalent hydrocarbon group with 1 to 20 carbon atoms that can have substituents, a monovalent heterocyclic group with 2 to 20 carbon atoms that can have substituents, an acetyl group, or -COOY. 1 When n is 1, R 2 It can be a substituted alkyl group with 1 to 20 carbon atoms, a cycloalkyl group with 3 to 20 carbon atoms that may have substituents, a monovalent aromatic hydrocarbon group with 6 to 20 carbon atoms that may have substituents, a monovalent heterocyclic group with 2 to 20 carbon atoms that may have substituents, an acetyl group, or a -COOY group. 2 When n is 2 or more, R 2 The methyl group is bonded to R via an ester bond. 1 The bonded carbon atoms, with the remaining portion consisting of n-valent groups containing 1 to 20 carbon atoms in a chain hydrocarbon structure that can have ether bonds.
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