Amphiphilic pectinate composite type polymer light stabilizer and preparation method thereof

A light stabilizer and composite technology, which is applied in the field of amphiphilic comb composite polymer light stabilizer and its preparation, can solve the problems of poor compatibility of wood-plastic composite materials and loss of light stabilization effect, etc. Achieve the effect of facilitating transportation and storage, improving poor compatibility and high thermal decomposition temperature

Inactive Publication Date: 2014-12-24
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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  • Amphiphilic pectinate composite type polymer light stabilizer and preparation method thereof
  • Amphiphilic pectinate composite type polymer light stabilizer and preparation method thereof
  • Amphiphilic pectinate composite type polymer light stabilizer and preparation method thereof

Examples

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preparation example Construction

[0105] A preparation method of an amphiphilic comb composite polymer light stabilizer, comprising the following steps:

[0106] Step 1, providing and / or preparing intermediate I with formula V

[0107]

[0108] Among them, 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 , 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 2, providing and / or preparing intermediate II with formula VI

[0112]

[0113] Among them, R 2 for H, R 3 When it is H, the intermediate II is 2-hydroxyl-4 acrylate-based benzophenone;

[0114] R 2 for H, R 3 When it is COOH, the intermediate II is 2′-carboxy-2-hydroxyl 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 i...

Embodiment 1

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

[0139]

[0140] Among them, R 0 for C 18 ;

[0141] R 1 for H;

[0142] R 2 for H;

[0143] R 3 for H;

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

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

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

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

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

[0149] Step 1, providing and / or preparing intermediate I;

[0150] Specifically include:

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

Embodiment 2

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

[0166]

[0167] Among them, R 0 for C 4 ;

[0168] R 1 for H;

[0169] R 2 for H;

[0170] R 3 for H;

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

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

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

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

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

[0176] Step 1, providing and / or preparing intermediate I;

[0177] Specifically include:

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

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PUM

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Abstract

The invention belongs to the technical field of polymer auxiliaries and particularly relates to an amphiphilic pectinate composite type polymer light stabilizer and a preparation method thereof. A molecular side chain of the composite type polymer light stabilizer contains diphenyl ketone type ultraviolet light absorber functional groups, hindered amine type free radical catcher groups, a lipophilic group acrylate, a hydrophilic group methoxy polyethylene glycol molecular chain, and the like at the same time. With two functional monomers, namely an ultraviolet light absorber and a free radical catcher, the light stabilizer disclosed by the invention has dual light-stability effects and a high thermal decomposition temperature, is amphiphilic and especially suitable for light stabilization of a wood-plastic composite material. The light stabilizer is synthesized by adopting free radical solution polymerization, simple in preparation method and suitable for industrial production.

Description

technical field [0001] 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. Background technique [0002] In recent years, with the intensification of air pollution, the atmospheric ozone layer has been severely damaged, resulting in an increase in the 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 phenomenon of polymer materials caused by this 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...

Claims

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Application Information

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Patent Type & Authority Applications(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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