Preparation method of polybenzimidazole polymer with high molecular weight and high solubility

A technology of polybenzimidazoles and polymers, which is applied in the field of preparation of polybenzimidazoles polymers, can solve the troublesome processing technology, the solubility problem of polybenzimidazoles polymers is not well solved, and affects the material Performance and other issues
CN113292722APending Publication Date: 2021-08-24SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI
Publication Date
2021-08-24

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Abstract

The invention provides a preparation method of a polybenzimidazole polymer with high molecular weight and high solubility. The method comprises the following steps: in the presence of a catalyst and aryl phenol, adopting a tetramine compound and a phenyl dicarboxylate compound, and preparing the high-molecular-weight and high-solubility polybenzimidazole polymer in a two-step high-temperature condensation manner. The preparation method provided by the invention overcomes the problems of uncontrollable polymerization, harsh reaction conditions and the like in the existing polymerization method, and the obtained product has high molecular weight, high solubility and excellent processability, and is very suitable for wide processing and use.
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Description

technical field

[0001] The invention belongs to the field of engineering thermoplastics, and in particular relates to a preparation method of a polybenzimidazole polymer with high molecular weight and high solubility. Background technique

[0002] Polybenzimidazole polymers are the most high-end engineering thermoplastics today, and are currently the materials with the highest temperature resistance in plastics. They are thermosetting materials, have no melting point, can be used for a long time at a temperature of 400°C, and have the best mechanical properties, etc. advantage. Polybenzimidazole polymers are an ideal material for use in extreme high temperatures, harsh chemical and plasma environments, or applications requiring high product durability and wear resistance that other resins cannot meet. It has excellent flame resistance, radiation stability, mechanical stability, electrical insulation, chemical stability, thermal stability, oxidation resistance stability, tou...

Claims

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