A class of triphenodioxazine main chain type benzoxazine polymers and synthesis method thereof
The two-step method for preparing polybenzoxazine polymers solves the problems of resource waste and environmental pollution caused by irreversible crosslinking of existing polybenzoxazine materials, and realizes polymers with high molecular weight and high thermal stability, thus expanding the application potential of the materials.
Patent Information
- Application Number
- CN202610515148.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-17
- Publication Date
- 2026-07-17
AI Technical Summary
The irreversible covalent cross-linking structure of existing polybenzoxazine materials after curing makes them impossible to reprocess and recycle, resulting in resource waste and environmental pollution.
Polybenzoxazine polymers were prepared using a two-step method. First, a soluble PTPDO precursor was synthesized, and then polytriphenyl dioxazine was obtained by high-temperature heat treatment. Then, soluble compound B was formed by condensation polymerization of bridging o-aminophenol with 2,5-dihydroxy-1,4-benzoquinone using trimethylsilyl (TMS) functionalization. Finally, the polymer was formed by high-temperature treatment in a thin film.
It achieves the solubility and high molecular weight of polymers, enabling them to dissolve in THF at room temperature. The molecular weight is as high as 13118, and the decomposition temperature reaches 405℃, solving the problems of resource waste and environmental pollution, and expanding the application potential of materials.
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Figure CN122404701A_ABST