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Multifunctional triazine ultraviolet absorbent with thioether antioxidant structure and preparation method of multifunctional triazine ultraviolet absorbent

A UV absorber and multi-functional technology, applied in the direction of organic chemistry, can solve the problems of poor compatibility, inconvenient use, etc., and achieve the effect of good compatibility, better weather resistance, and no effect on transparency

Active Publication Date: 2021-08-06
烟台新特路新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Triazine UV absorbers have good development prospects as new light stabilizers because of their high efficiency, high temperature resistance, light color, and good compatibility. However, because of their unique structure, they are less compatible with plastic products. Poor, and it must be used in combination with antioxidants, which is inconvenient to use

Method used

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  • Multifunctional triazine ultraviolet absorbent with thioether antioxidant structure and preparation method of multifunctional triazine ultraviolet absorbent
  • Multifunctional triazine ultraviolet absorbent with thioether antioxidant structure and preparation method of multifunctional triazine ultraviolet absorbent
  • Multifunctional triazine ultraviolet absorbent with thioether antioxidant structure and preparation method of multifunctional triazine ultraviolet absorbent

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Embodiment 1

[0020] This embodiment relates to a preparation method of a multifunctional triazine UV absorber with a sulfide antioxidant structure, see figure 1 shown, including the following steps:

[0021] Add 340.10g (1mol) of 4-(4,6-diphenyl-S-triazine)-1,3-resorcinol into a 3L four-necked flask, then add 1500ml of toluene, 404g of triethylamine (4, mol) 328g (1.2mol) of 3-dodecylthiopropionic acid, raise the temperature to 60°C and start to add 199g (1.3mol) of phosphorus oxychloride dropwise. During the dropwise addition, the temperature is controlled at 60-80°C, and the dropping time is 1h. After the addition, the temperature was raised to 85°C for 1.5h. After the reaction is over, wait for the reaction liquid to cool down and slowly add 680.20g of water dropwise. After the dropwise addition, let it stand for 1 hour for liquid separation. Distill 1000ml of toluene from the organic phase under reduced pressure. Stir the remaining liquid to cool down and crystallize. Crystallization...

Embodiment 2

[0023] This embodiment relates to a preparation method of a multifunctional triazine UV absorber with a sulfide antioxidant structure, see figure 1 shown, including the following steps:

[0024] Add 340.10g (1mol) of 4-(4,6-diphenyl-S-triazine)-1,3-resorcinol into a 3L four-necked flask, then add 1500ml of xylene, diisopropylethylamine 516g (4,mol) 328g (1.2mol) of 3-dodecylthiopropionic acid, raise the temperature to 60°C and start to add 199g (1.3mol) of phosphorus oxychloride dropwise. The time is 1h, after the dropwise addition, the temperature is raised to 85°C and kept for 1.5h. After the reaction is over, wait for the reaction solution to cool slightly and begin to slowly add 680.20 g of water dropwise. After the dropwise addition, let it stand for 1 hour for liquid separation. Distill the organic phase under reduced pressure to distill 1000 ml of xylene, and stir the remaining residual liquid to cool down and crystallize. Crystallization at ℃, and suction filtration ...

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Abstract

The invention provides a multifunctional triazine ultraviolet absorbent with a thioether antioxidant structure and a preparation method of the multifunctional triazine ultraviolet absorbent. The invention also relates to the preparation method of the absorbent, wherein the preparation method comprises the steps: adding 4-(4,6-diphenyl-S-triazine)-1,3-resorcinol and the organic solvent into a four-neck flask, then adding an acid-binding agent and 3-dodecylthio-propionic acid, and stirring for 1 hour; dropwise adding phosphorus oxychloride into the system, heating, stirring, and completing the reaction; and slowly dropwise adding water into the reaction system, stirring, standing, carrying out reduced pressure distillation, crystallizing the distillation residual liquid, and carrying out suction filtration. The triazine functional group serving as the ultraviolet absorbent and the thioether bond with the auxiliary antioxidant function are contained in the structure, and the effect that one agent has multiple functions is achieved; and due to the change of the structure, the molecular weight is higher, high temperature resistance is achieved, volatility is low, precipitation is not prone to occurring when the addition amount is high, compatibility with most polymers, additives and formula type resin is good, weather resistance is better, ultraviolet absorption capacity is high, and transparency is not affected.

Description

technical field [0001] The invention belongs to the field of plastic ultraviolet absorbers; in particular, it relates to a multifunctional triazine ultraviolet absorber with a sulfide anti-oxidation structure and a preparation method. Background technique [0002] With the rapid development of polymer materials, the research and development of its UV absorbers has gradually been paid attention to. Triazine UV absorbers have good development prospects as new light stabilizers because of their high efficiency, high temperature resistance, light color, and good compatibility. However, because of their unique structure, they are less compatible with plastic products. Poor, and it must be compounded with antioxidants to use, which is inconvenient to use. Contents of the invention [0003] The object of the present invention is to provide a multifunctional triazine ultraviolet absorber with thioether antioxidant structure and its preparation method. [0004] The present invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D251/24C08K5/378
CPCC07D251/24C08K5/378
Inventor 刘辉蔡智奇丁录元
Owner 烟台新特路新材料科技有限公司
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