Polyol grafted with antioxidant molecule

A technology of antioxidants and polyols, which is applied in the field of grafted antioxidant polyols and its preparation, and can solve the problems of complex process and low grafting amount of hindered phenolic antioxidants

Active Publication Date: 2017-11-24
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned method is complex and the grafting amount of hindered phenolic antioxidants on the surface of nanoparticles is low.
Grafting hindered phenolic antioxidants to polymer chains can also inhibit the migration of hindered phenolic antioxidants and improve the durability of polymer materials. Alcohols, and then use the obtained polyols to prepare aging-resistant polymer materials

Method used

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  • Polyol grafted with antioxidant molecule
  • Polyol grafted with antioxidant molecule
  • Polyol grafted with antioxidant molecule

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Embodiment Construction

[0041] In order to more clearly understand the above-mentioned purposes, features and advantages of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Features in the embodiments can be combined with each other.

[0042] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways than described here. Therefore, the protection scope of the present invention is not limited by the specific implementation disclosed below. Example limitations.

[0043] as attached figure 1 As shown, a polyhydric alcohol of a grafted antioxidant provided in some embodiments of the present invention, the structural formula of the polyol of the grafted antioxidant is:

[0044]

[0045] The polyol of the grafted antioxidant has hindered phenolic groups, which is equi...

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Abstract

The invention relates to the field of polyol synthesis, and in particular relates to a polyol grafted with a hindered phenol type antioxidant and a preparation method thereof. The preparation method comprises the following steps: firstly carrying out acylating chlorination on a terminal structure of the hindered phenol type antioxidant, then reacting with hydroxyls by virtue of acyl chloride, and grafting the hindered phenol type antioxidant to polyol, wherein hindered phenol type antioxidant molecules account for 2-40wt% of the total mass of the polyol grafted with antioxidant molecules. The polyol grafted with the antioxidant molecules can inhibit migration of the antioxidant molecules in a service process and improve thermal-oxidative aging resistance of a macromolecular material.

Description

technical field [0001] The invention belongs to the technical field of heat-oxidative aging-resistant polymer materials, and in particular relates to a polyol grafted with an antioxidant and a preparation method thereof. Background technique [0002] Polymer materials are widely used in many fields of national economy because of their excellent performance. However, polymer materials may come into contact with oxygen during molding, storage and service, resulting in oxidative degradation of molecular chains, leading to gradual deterioration of the performance of polymer materials and making them lose their use value. [0003] In order to reduce the use cost of polymer materials, antioxidant additives are generally added by physical mixing to improve the overall performance of polymer materials and prolong their service life. At present, hindered phenol is one of the most effective antioxidants. Adding a small amount of hindered phenol to polymer materials can significantly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/60C07C59/56C07C67/14C07C69/732C08G18/32
CPCC07C51/60C07C59/56C07C67/14C07C69/732C08G18/3206C08G18/3215
Inventor 董全霄谢永江郑新国李书明刘竞曾志程冠之杨德军刘相会李世达
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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