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Hindered phenol macromonomer with polyphenol structure and preparation method thereof

A macromonomer and hindered phenol technology, which is applied in the field of hindered phenol macromonomer with polyphenol structure and its preparation, can solve problems such as uneven dispersion, decreased damping effect, and unbalanced damping effect, and achieves a simple preparation process , Mild reaction and easy operation

Inactive Publication Date: 2019-02-05
SHANGHAI INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] So far, the damping coatings prepared have been directly added to the coating by small molecule hindered phenolic compounds; therefore, with the extension of time, small molecular hindered phenolic compounds are easy to migrate from the damping coating, resulting in a decrease in damping effect
In addition, blends and damping coatings prepared by blending often result in uneven damping effects due to uneven dispersion of hindered phenols

Method used

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  • Hindered phenol macromonomer with polyphenol structure and preparation method thereof
  • Hindered phenol macromonomer with polyphenol structure and preparation method thereof
  • Hindered phenol macromonomer with polyphenol structure and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0047] A hindered phenol macromonomer with a polyphenol structure, calculated by weight, its preparation raw materials are as follows:

[0048]

[0049] Wherein, described diisocyanate is isophorone diisocyanate;

[0050] The antioxidant is tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester;

[0051] Described solvent is butanone;

[0052] The catalyst is dibutyltin dilaurate;

[0053] The preparation method of the hindered phenol macromonomer of a kind of polyphenol structure, the steps are as follows:

[0054] Put isophorone diisocyanate into a 500mL round-bottomed four-neck flask under N 2 Under protection, the temperature was controlled to 30°C, and then hydroxyethyl methacrylate was added dropwise to the system at a rate of 0.005 mL / s, and then 1 drop of catalyst was added dropwise. After the dropwise addition, the reaction was stirred for 1 hour. Dissolve the antioxidant with a solvent, pour it into a four-necked flask, and add the r...

Embodiment 2

[0063] A hindered phenol macromonomer with a polyphenol structure, calculated by weight, its preparation raw materials are as follows:

[0064]

[0065] Wherein, described diisocyanate is isophorone diisocyanate;

[0066] The antioxidant is tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester;

[0067] Described solvent is ethyl acetate;

[0068] The catalyst is dibutyltin dilaurate;

[0069] The preparation method of the hindered phenol macromonomer of a kind of polyphenol structure, the steps are as follows:

[0070] Put isophorone diisocyanate into a 500mL round-bottomed four-neck flask under N 2 Under protection, after controlling the temperature to 35° C., hydroxyethyl methacrylate was added dropwise to the system at a rate of 0.05 mL / s, and then 1 drop of catalyst was added dropwise. After the dropwise addition was complete, the reaction was stirred for 1 hour. Dissolve the antioxidant with a solvent, pour it into a four-necked flask,...

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PUM

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Abstract

The invention discloses a hindered phenol macromonomer with a polyphenol structure and a preparation method thereof. The hindered phenol macromonomer with the polyphenol structure is prepared from thefollowing components in parts by weight: 55-70 parts of hydroxyethyl methacrylate, 110-150 parts of diisocyanate, 170-210 parts of antioxidant, and 0.005-0.05 part of catalyst. The hindered phenol macromonomer with the polyphenol structure prepared by the invention can be used for preparing polymeric long-acting damping resin and long-acting damping coating.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a hindered phenol macromonomer with a polyphenol structure and a preparation method thereof. Background technique [0002] Hindered phenolic compounds are polymer additives developed in the 20th century, which can be used as polymer antioxidants and damping material additives. Nowadays, it has become a common practice to blend hindered phenolic compounds with different polymers to prepare plastics, rubbers, and coatings with aging resistance and outstanding damping properties. [0003] So far, the damping coatings prepared are all directly added to the coating by small molecular hindered phenolic compounds; therefore, with the extension of time, small molecular hindered phenolic compounds are easy to migrate from the damping coating, resulting in a decrease in damping effect. In addition, blends and damping coatings prepared by the blending method often lea...

Claims

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Application Information

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IPC IPC(8): C08G18/32C08G18/67C08G18/75
CPCC08G18/3221C08G18/672C08G18/755
Inventor 郑康生张英强娄静洁单昌礼王淼万通李美佳任泽钰范思达毛国臣赵凌飞王松莹
Owner SHANGHAI INSTITUTE OF TECHNOLOGY
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