Light stabilizer with ultraviolet ray shielding and absorbing functions and preparation method thereof

A technology of light stabilizer and ultraviolet light, which is applied in the direction of dyeing organosilicon compound treatment, silicon organic compound, fibrous filler, etc., to achieve the effect of improving light stabilization effect, making up for poor durability and superior performance

Inactive Publication Date: 2015-07-22
界首市鑫豪塑胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dual light stabilizer is a chemical bond between an inorganic UV shielding agent and an organic UV absorber, which not only improves the compatibility between the inorganic particles and the polymer matrix, but also makes up for the poor durability of the organic UV absorber, and can greatly improve the Its photostabilizing effect

Method used

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  • Light stabilizer with ultraviolet ray shielding and absorbing functions and preparation method thereof
  • Light stabilizer with ultraviolet ray shielding and absorbing functions and preparation method thereof
  • Light stabilizer with ultraviolet ray shielding and absorbing functions and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] (1 (take 3000g rutile TiO with a particle size of 100nm 2 , disperse and preheat in a high-speed mixer at 100-130°C, slowly add 3% silane coupling agent hydrolyzate to it, mix at high speed for 0.5-1h, and obtain modified TiO with epoxy groups 2 .

[0022] (2 (mix 10g 2,4-dihydroxybenzophenone, 1.5g KOH, and an appropriate amount of cyclohexanone evenly, heat up to 105°C, add 300g modified TiO 2 , and reacted for 2 hours to obtain a light stabilizer with both UV shielding and absorbing functions.

Embodiment 2

[0024] (1 (take 3000g of rutile TiO with a particle size of 10 μm 2 , disperse and preheat in a high-speed mixer at 100-130°C, slowly add 1.25% silane coupling agent hydrolyzate to it, mix at high speed for 0.5-1h, and obtain modified TiO with epoxy groups 2 .

[0025] (2) 10g 2,4-dihydroxybenzophenone, 4.2g K 2 CO 3 , an appropriate amount of dimethylformamide, mix evenly, heat up to 100°C, add 200g of modified TiO 2 , and reacted for 3 hours to obtain a light stabilizer with both UV shielding and absorbing functions.

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Abstract

The invention discloses a light stabilizer with ultraviolet ray shielding and absorbing functions and a preparation method thereof. A molecular structure of the light stabilizer is shown in the formula (I). The invention further discloses the preparation method of the light stabilizer with the ultraviolet ray shielding and absorbing functions. The preparation method comprises the following steps: performing surface modification on rutile type TiO2 by using a silane coupling agent, namely, gamma-glycidoxypropyl trimethoxysilane (KH560), to obtain TiO2 with an epoxy group; enabling the epoxy group on the surface of the TiO2 to be reacted with a para hydroxyl of 2,4-dihydroxy benaophenonel to obtain the light stabilizer with the ultraviolet ray shielding and absorbing functions. According to the double light stabilizer, chemical bonding is performed on an inorganic ultraviolet shielding agent and an organic ultraviolet absorbing agent, so that not only is the compatibility of an inorganic particle and a high-polymer matrix improved, but also the defect of poor durability of the organic ultraviolet absorbing agent is made up, and the light stabilizing effect of the light stabilizer can be greatly improved.

Description

technical field [0001] The invention relates to a light stabilizer with ultraviolet shielding and absorbing functions and a preparation method thereof. Background technique [0002] With the development of industry, air pollution is becoming more and more serious, the ozone layer is becoming thinner day by day, and the ultraviolet energy radiated to the ground is constantly increasing, and tends to be short-wave. Not only is it seriously endangering human health, but the number of skin cancer patients has increased day by day in recent years; it also aggravates the aging of polymer materials and brings great losses to life and production. This has led to the increasing application of light stabilizers in the field of sunscreen cosmetics and outdoor applications of polymer materials, making their position in the entire polymer additives more prominent. [0003] Light stabilizers can be roughly divided into four categories, namely UV absorbers, light shielding agents, quenche...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/06C08K9/04C08K3/22C09C1/36C09C3/12C07F7/08
Inventor 周正发丁婉琦冯艳徐卫兵马海红任凤梅
Owner 界首市鑫豪塑胶有限公司
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