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Preparation method and application of triazine compound with polyvinyl chloride light stabilizing effect

A technology of polyvinyl chloride and triazines, which is applied in the field of preparation of triazines, can solve the problems of different triggering conditions, loss of use value, decline in PVC mechanical properties, etc., and achieve good light stabilization effect

Active Publication Date: 2019-12-27
江西联塑科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The photodegradation process of PVC contains two main reactions: the first is dehydrochlorination reaction, which is similar to thermal degradation, but the initiation conditions are different; the second is oxidation reaction, which forms peroxide and causes chain crosslinking And the chain is broken, thus reducing the mechanical properties of PVC and losing its use value

Method used

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  • Preparation method and application of triazine compound with polyvinyl chloride light stabilizing effect
  • Preparation method and application of triazine compound with polyvinyl chloride light stabilizing effect
  • Preparation method and application of triazine compound with polyvinyl chloride light stabilizing effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022]

[0023] Under the protection of nitrogen, add 14g of m-aminobenzoic acid and 200mL of N,N-dimethylformamide into a 500mL four-neck flask, stir at room temperature and dissolve completely, then add 25g of N,N'-carbonyldiimidazole, the solution is turbid; start heating , the temperature was slowly raised to 60°C, the solution gradually became clear, and the temperature was maintained to continue stirring for 1.5 hours, then the heating was stopped and the stirring continued; the system was cooled to room temperature at 25°C, and 16 g of o-chlorophenethylamine was dissolved in N,N - Dimethylformamide 100mL, after the dropwise addition, stir and react at room temperature for 5h, TLC monitors the complete reaction of the raw materials, add 300mL of water to the reaction solution, then adjust the pH of the reaction solution to 8-9 with dilute hydrochloric acid, filter the reaction solution , the filtrate was extracted several times with dichloromethane 100mL, the organic p...

Embodiment 2

[0025]

[0026] Under the protection of nitrogen, add 14g of m-aminobenzoic acid and 200mL of N,N-dimethylformamide into a 500mL four-necked bottle, stir at room temperature and dissolve completely, then add 16g of N,N'-carbonyldiimidazole, the solution can be seen to be cloudy; start heating , slowly raised the temperature to 80°C, the solution gradually became clear, kept the temperature and continued to stir for 3.5 hours, stopped heating, and continued to stir; the system was cooled to room temperature at 25°C, and N,N - Dimethylformamide 100mL, after the dropwise addition, stir the reaction at room temperature for 7h, add 300mL of water to the reaction solution, then adjust the pH of the reaction solution to 8-9 with dilute hydrochloric acid, filter the reaction solution, and dichloromethane 100 mL was extracted several times, the organic phases were combined, dried over anhydrous magnesium sulfate, concentrated, pre-adsorbed on silica gel and separated by silica gel co...

Embodiment 3

[0028]

[0029] Add 27.5 g of 3-amino-N-(2-chlorophenethyl)benzamide, 7 g of sodium ethoxide, 43 g of iodomethane and 300 mL of ethanol into the reaction flask, and place the reaction temperature at -10°C for 5 h. Add 200 mL of distilled water, evaporate 200 mL of solvent ethanol under reduced pressure under vacuum conditions, then extract the reaction liquid three times with 100 mL of ethyl acetate, combine the organic phases, wash the organic phase twice with 100 mL of saturated sodium chloride solution, separate the organic phase, and The obtained organic phase was dried with anhydrous magnesium sulfate, concentrated and purified by silica gel column chromatography (PE:EA=8:1) after pre-adsorption on silica gel to obtain methoxy-3-amino-N-(2-chlorobenzene Ethyl) benzimine 22.9g; MS (ESI) m / z: 289.7 [M+H] + .

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Abstract

The invention discloses a preparation method and application of a triazine compound with a polyvinyl chloride light stabilizing effect, and belongs to the technical field of functional organic molecule synthesis. The key points of the technical scheme are as follows: the triazine compound has a structure; m-aminobenzoic acid with low price is used as an initial raw material, and the triazine compound with a novel structure is obtained through a series of simple and effective synthesis means; the triazine compound obtained by the invention has a good polyvinyl chloride light stabilizing effect.

Description

technical field [0001] The invention belongs to the technical field of functional organic molecule synthesis, and in particular relates to a preparation method and application of a triazine compound with polyvinyl chloride photostabilization. Background technique [0002] Triazine compounds are a class of nitrogen-containing heterocyclic compounds, which are widely used in chemical dyes and materials, and are important constituent structures in insecticides and herbicides. In recent years, studies have found that triazine compounds can also be used in the field of flame retardancy. For example, s-triazine ring compounds not only play an important role in the construction of intumescent flame retardant systems (IFR), but also can be introduced into It is endowed with good flame retardancy and heat resistance in epoxy resin. This kind of material has a remarkable flame retardant effect, can endow the flame retardant substrate with excellent electrical properties, mechanical p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D498/04C08K5/3492C08L27/06
CPCC07D498/04C08K5/34926C08L2201/08C08L27/06
Inventor 毛阿龙刘亚威胡娅伦
Owner 江西联塑科技实业有限公司
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