Preparation method and application of triazine compound with polyvinyl chloride light stabilization function

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

Inactive Publication Date: 2019-09-06
河南龙湖生物技术有限公司
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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 stabilization function
  • Preparation method and application of triazine compound with polyvinyl chloride light stabilization function
  • Preparation method and application of triazine compound with polyvinyl chloride light stabilization function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021]

[0022] Under nitrogen protection, add 14g (0.1mol) of m-aminobenzoic acid (0.1mol) and 200mL of N,N-dimethylformamide into a 500mL four-neck flask, stir at room temperature and dissolve completely, then add 25g (0.15mol) of N,N'-carbonyldiimidazole ), it can be seen that the solution is turbid; start heating, slowly heat up to 60°C, keep stirring at this temperature for 1.5h, stop heating, and continue stirring; the system is cooled to room temperature 25°C, and 16g of o-chlorophenethylamine is added dropwise through the dropping funnel (0.1mol) of N,N-dimethylformamide 100mL, stirred and reacted at room temperature for 5h after the dropwise addition, TLC monitored the complete reaction of the raw materials, added 300mL of water to the reaction solution, and adjusted the pH of the reaction solution with dilute hydrochloric acid 8 to 9, filter the reaction solution, extract the filtrate with 100 mL of dichloromethane for several times, combine the organic phases, dry...

Embodiment 2

[0024] Under nitrogen protection, add 14g (0.1mol) of m-aminobenzoic acid (0.1mol) and 200mL of N,N-dimethylformamide into a 500mL four-neck flask, stir at room temperature and dissolve completely, then add 16g (0.1mol) of N,N'-carbonyldiimidazole ), it can be seen that the solution is turbid; start heating, slowly heat up to 80°C, keep the temperature and continue stirring for 3.5h, stop heating, and continue stirring; the system is cooled to room temperature 25°C, and 16g of o-chlorophenethylamine is added dropwise through the dropping funnel (0.1mol) of N,N-dimethylformamide 100mL, after the dropwise addition, stir and react at room temperature for 7h, add 300mL of water to the reaction solution, adjust the pH of the reaction solution to 8-9 with dilute hydrochloric acid, filter The reaction solution and the filtrate were extracted several times with 100 mL of dichloromethane, the organic phases were combined, dried over anhydrous magnesium sulfate, concentrated, and then se...

Embodiment 3

[0026]

[0027] Add 27.5 (0.1 mol) of 3-amino-N-(2 chlorophenethyl) benzamide, 7 g (0.1 mol) of sodium ethoxide, 43 g (0.3 mol) of methyl iodide and 300 mL of ethanol in the reaction flask, and the reaction temperature is set at React at -10°C for 5 hours, add 200 mL of distilled water to the reaction solution, distill off 200 mL of solvent ethanol under reduced pressure under vacuum, then extract the reaction solution with 100 mL of ethyl acetate three times, combine the organic phases, and undergo saturated chlorination. Wash twice with 100 mL of sodium solution, separate the organic phase, dry the obtained organic phase with anhydrous magnesium sulfate, concentrate and purify through silica gel column chromatography to obtain methoxy-3-amino-N-(2-chlorophenethyl ) benzyl imine 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 stabilization function, belonging to the technical field of functional organic molecule synthesis. The main points of the preparation method are as follows: the triazine compound has a structure; in the invention, low-price m-aminobenzoic acid is taken as an initial raw material, andthe triazine compound with a novel structure is obtained through a series of simple and effective synthesis methods. The triazine compound obtained by the method has good polyvinyl chloride light stabilization function.

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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IPC IPC(8): C07D498/04C08K5/3492C08L27/06
CPCC07D498/04C08K5/34926C08L2201/08C08L27/06
Inventor 不公告发明人
Owner 河南龙湖生物技术有限公司
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