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A kind of amphiphilic comb composite polymer light stabilizer and preparation method thereof

A light stabilizer and polymer technology, applied in the field of amphiphilic comb-shaped composite polymer light stabilizer and its preparation, can solve the problems of poor compatibility of wood-plastic composite materials, loss of light stabilization effect, and the like, Achieve the effect of being beneficial to transportation and storage, improving poor compatibility and high thermal decomposition temperature

Inactive Publication Date: 2016-12-07
GUANGXI TEACHERS EDUCATION UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the application of low-molecular ultraviolet absorbers and light stabilizers in materials loses the light-stabilizing effect due to thermal decomposition or migration during processing. In addition, most of the current high-molecular light stabilizers are oil-soluble and are applied to wood-plastic composite materials. Performance and wood-plastic composite materials are not compatible, so it is very important to design a class of amphiphilic comb-like polymer light stabilizers to improve the current shortcomings of most oil-soluble polymer light stabilizers in wood-plastic composite materials. important

Method used

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  • A kind of amphiphilic comb composite polymer light stabilizer and preparation method thereof
  • A kind of amphiphilic comb composite polymer light stabilizer and preparation method thereof
  • A kind of amphiphilic comb composite polymer light stabilizer and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0105] A preparation method of an amphiphilic comb-shaped composite polymer light stabilizer includes the following steps:

[0106] Step 1. Provide and / or prepare intermediate I of formula V

[0107]

[0108] Where R 1 When it is H, the intermediate I is fumaric acid 2,2,6,6-tetramethylpiperidinol polyethylene glycol monomethyl ether diester;

[0109] R 1 For CH 3 When the intermediate I is fumaric acid 1,2,2,6,6-pentamethylpiperidinol polyethylene glycol monomethyl ether diester;

[0110] n=13, 22, 26, 45;

[0111] Step two, provide and / or prepare intermediate II of formula VI

[0112]

[0113] Where R 2 For H, R 3 When it is H, the intermediate II is 2-hydroxy-4 acrylate benzophenone;

[0114] R 2 For H, R 3 When it is COOH, the intermediate II is 2'-carboxy-2-hydroxy 4-acrylate benzophenone:

[0115] R 2 For CH 3 , R 3 When it is H, the intermediate II is 2-hydroxy-4-methacrylate benzophenone;

[0116] R 2 For CH 3 , R 3 When it is COOH, the intermediate II is 2'-carboxy-2-hydroxy 4-meth...

Embodiment 1

[0138] The amphiphilic comb-shaped composite polymer light stabilizer of the present invention has the general structural formula:

[0139]

[0140] Where R 0 Is C 18 ;

[0141] R 1 Is H;

[0142] R 2 Is H;

[0143] R 3 Is H;

[0144] n=26, which is polyethylene glycol monomethyl ether 1200

[0145] The value of x is any integer ranging from 1 to 100;

[0146] The value of y is any integer ranging from 1 to 100;

[0147] The value of z is an arbitrary integer from 1 to 100.

[0148] The preparation method of the amphiphilic comb-shaped composite polymer light stabilizer of the present invention includes the following steps:

[0149] Step 1. Provide and / or prepare intermediate I;

[0150] Specifically:

[0151] a. Feed monomethyl fumarate and polyethylene glycol monomethyl ether at a molar ratio of 1:1.1, add 2 times the volume of the mixture of toluene solvent, heat to 45°C and stir to dissolve, then add 3.5% of the total weight of the mixture The temperature of p-toluenesulfonic acid is incr...

Embodiment 2

[0165] The amphiphilic comb-shaped composite polymer light stabilizer of the present invention has the general structural formula:

[0166]

[0167] Where R 0 Is C 4 ;

[0168] R 1 Is H;

[0169] R 2 Is H;

[0170] R 3 Is H;

[0171] n=26, which is polyethylene glycol monomethyl 1200;

[0172] The value of x is any integer ranging from 1 to 100;

[0173] The value of y is any integer ranging from 1 to 100;

[0174] The value of z is an arbitrary integer from 1 to 100.

[0175] The preparation method of the amphiphilic comb-shaped composite polymer light stabilizer of the present invention includes the following steps:

[0176] Step 1. Provide and / or prepare intermediate I;

[0177] Specifically:

[0178] a. Feed monomethyl fumarate and polyethylene glycol monomethyl ether at a molar ratio of 1:1.05, add 4 times the volume of the mixture of toluene solvent, heat to 45°C and stir to dissolve, then add 3.5% of the total weight of the mixture The p-toluenesulfonic acid is heated to 100°C, protect...

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Abstract

The invention belongs to the field of polymer additives, and in particular relates to an amphiphilic comb-like composite polymer light stabilizer and a preparation method thereof. The molecular side chain of the composite polymer light stabilizer contains benzophenone UV absorber functional group, hindered amine free radical scavenger group, lipophilic group acrylate and hydrophilic group polyethylene glycol. Alcohol monomethyl ether molecular chain, etc. Because the light stabilizer of the present invention contains two functional monomers, an ultraviolet absorber and a free radical scavenger, it has a double light-stabilizing effect, has a high thermal decomposition temperature, and is amphiphilic, so it is especially suitable for the production of wood-plastic composite materials. Light stabilization, the synthesis of the light stabilizer adopts free radical solution polymerization, the preparation method is simple, and it is suitable for industrial production.

Description

Technical field [0001] The invention belongs to the field of polymer auxiliary agents, and specifically relates to an amphiphilic comb-shaped composite polymer light stabilizer and a preparation method thereof. Background technique [0002] In recent years, with the intensification of atmospheric pollution, the ozone layer of the atmosphere has been severely damaged, resulting in an increasing amount of ultraviolet radiation on the surface. Under long-term exposure to ultraviolet light, polymer materials will undergo aging phenomena such as discoloration, degradation, and brittleness, thereby shortening the service life of the material. In order to reduce the aging of polymer materials caused by ultraviolet light, adding light stabilizers to polymer materials is an effective method. [0003] With the increasing shortage of petroleum resources, the use of natural polymer materials is increasing. In recent years, the research and application of wood-plastic composite materials has s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F290/06C08F220/16C08F220/30C08G65/48C07C69/54C07C67/14
Inventor 于淑娟韦德麟陈宽朱永飞
Owner GUANGXI TEACHERS EDUCATION UNIV
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