Aminic antioxidant and its preparation method and application
Amine antioxidants synthesized through amidation and substitution reactions solve the problems of slow free radical termination rates and poor anti-migration properties of existing antioxidants in high-end products, achieving higher stability and antioxidant performance, and are suitable for anti-aging of rubber and polyolefin materials.
CN117902997BActive Publication Date: 2026-05-26PETROCHINA CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- PETROCHINA CO LTD
- Filing Date
- 2022-10-19
- Publication Date
- 2026-05-26
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Figure CN117902997B_ABST
Abstract
The application provides an amine antioxidant, which has the structure shown in the following formula, wherein R is a phenyl group or a 2-naphthyl group.The amine antioxidant provided by the application contains four antioxidant active groups in the molecular structure, and due to the electron-donating effect and the steric hindering effect, the antioxidant active groups in the antioxidant are more likely to provide hydrogen protons when the antioxidant is applied to high-end polyolefin products, and the rate of termination of free radicals is faster.In addition, the amine antioxidant has a large molecular weight, is not easy to precipitate during processing and use, and adopts an amide bond as a connecting group, which is not easy to hydrolyze into small molecules during processing and use, so that the migration resistance and extraction resistance of the antioxidant are effectively improved.
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