Preparation method and application of high-efficiency migration-resistant hindered phenol antioxidant

By reacting hindered phenolic compounds with polyepoxy group compounds, changing the substituent structure of the phenolic hydroxyl group, the problems of easy migration and low antioxidant efficiency of existing antioxidants are solved, and high-efficiency resistance with significant antioxidant effects are prepared Migration-hindered phenolic antioxidants are used to improve the aging resistance of polymer materials.

CN119431141APending Publication Date: 2025-02-14FUZHOU UNIV
0 Cites 2 Cited by

Patent Information

Application Number
CN202411555703.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-04
Publication Date
2025-02-14

AI Technical Summary

Technical Problem

The existing hindered phenolic antioxidants have small molecular weight, easy migration, low antioxidant efficiency, and the commonly used antioxidant range is narrow and the functions are single.

Method used

By reacting hindered phenolic compounds with polyepoxy group compounds, the para-substituted group structure of the phenolic hydroxyl group on the benzene ring is changed, so that it changes from an electron withdrawing group to an electron donor group, and oxygen atoms on the phenolic hydroxyl group are increased electron cloud density, thereby improving antioxidant properties.

Benefits of technology

Efficient and resistant to migration-hindered phenolic antioxidants with moderate molecular weight, good compatibility and significant antioxidant effects were prepared, which can effectively capture the free radicals generated by the aging of polymer materials and significantly improve the aging resistance of the material.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses a preparation method and application of an efficient migration-resistant hindered phenol antioxidant. The preparation method comprises the following steps: dissolving a hindered phenolic compound and an epoxy compound in a solvent to carry out ring-opening reaction, and then further reacting the carboxyl-activated hindered phenolic compound with a ring-opened product to obtain the novel antioxidant with 4-6 hindered phenolic hydroxyl groups in the structure. According to the novel antioxidant disclosed by the invention, on the basis of fully utilizing the capability of capturing free radicals by hindered phenolic hydroxyl, the oxidation resistance of the antioxidant is improved by changing a para-substituent structure, the migration resistance of the antioxidant is improved by changing the molecular weight and the molecular structure, and the service life of the antioxidant in a high polymer material is prolonged. The novel antioxidant has the advantages of simple process preparation, high efficiency, migration resistance and the like.
Need to check novelty before this filing date? Find Prior Art