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A kind of anti-ultraviolet flame retardant epoxy resin curing agent and preparation thereof

An epoxy resin curing and flame retardant technology, which is applied in organic chemistry, chemical instruments and methods, compounds of Group 5/15 elements of the periodic table, etc., can solve the problems of flammability, easy aging, etc. Effects of UV and flame retardant properties

Active Publication Date: 2022-07-08
江西瀚泰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

However, the shortcomings of epoxy resin, such as easy aging and flammability in light environment, have also become the main bottlenecks that limit its wide application.

Method used

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  • A kind of anti-ultraviolet flame retardant epoxy resin curing agent and preparation thereof
  • A kind of anti-ultraviolet flame retardant epoxy resin curing agent and preparation thereof
  • A kind of anti-ultraviolet flame retardant epoxy resin curing agent and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation of embodiment 1 p-nitrocinnamic acid

[0022] Weigh 15g of p-nitrobenzaldehyde and 6g of sodium acetate into the reaction flask, add 30mL of acetic anhydride, reflux at 180°C for 8h, after the reaction, add 50mL of water, dissolve with saturated potassium carbonate and adjust the pH to 8, decolorize with activated carbon, filter while hot , adjust the pH to about 4 with hydrochloric acid, filter, and get it.

[0023] ES: M / Z 181[M+H] + .

Embodiment 2

[0024] Example 2: Preparation of p-nitrocinnamoyl chloride

[0025] Weigh 5 g of p-nitrocinnamic acid obtained in Example 1 into a reaction flask, add 30 mL of thionyl chloride and 2 mL of DMF, heat under reflux for 2 h, evaporate the solvent under reduced pressure, and use it directly in the next step.

Embodiment 3

[0026] Example 3: Preparation of 2-hydroxy-4-(2-p-nitrophenylacrylate) benzophenone

[0027] Weigh 3.4 g of 2,4-dihydroxybenzophenone into a reaction flask, add 3 mL of triethylamine, 20 mL of tetrahydrofuran, and slowly dropwise add 10 mL of the tetrahydrofuran solution dissolved in the result of Example 2 at 0-5 °C, and the dripping is completed. , continue to stir at 0-10 ℃ for 4 h, after the reaction, add 30 mL of water, extract with dichloromethane (3*50 mL), dry with anhydrous sodium sulfate, and purify by column chromatography to obtain the title compound.

[0028] ES: M / Z 390[M+H] + .

[0029] 1 H NMR (600MHz, CDCl 3 )(δ,ppm): 8.51~8.50(m,2H), 8.02~8.00(m,2H), 7.82~7.81(m,2H), 7.55~7.53(m,2H), 7.40~7.39(m,2H) ), 6.98~6.95(m, 2H), 6.50(s, 1H), 6.37(s, 1H), 5.00(s, 1H).

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Abstract

The invention belongs to the technical field of epoxy resin materials, and in particular relates to an anti-ultraviolet flame retardant epoxy resin curing agent and preparation thereof. The anti-ultraviolet flame retardant epoxy resin curing agent provided by the invention has the structure shown in formula (I) It shows that the UV-absorbing active groups and flame-retardant active groups contained in the curing agent participate in the curing reaction of the epoxy resin, and uniformly introduce UV-absorbing elements and flame-retardant elements into the epoxy resin chain, which greatly improves the epoxy resin. performance of the resin.

Description

technical field [0001] The invention belongs to the technical field of epoxy resin materials, in particular to an anti-ultraviolet flame retardant epoxy resin curing agent and preparation thereof. [0002] technical background [0003] Epoxy resin is an important thermosetting resin. It is famous for its excellent mechanical properties, electrical properties and bonding properties. It is widely used in electronic appliances, chemical anticorrosion, aerospace, preparation of glass fiber reinforced plastics and other fields. people's attention. However, the shortcomings such as easy aging and flammability under the light environment of epoxy resin have also become the main bottlenecks that limit its wide application. Therefore, it is of great significance to improve the UV resistance and flame retardancy of epoxy resins. SUMMARY OF THE INVENTION [0004] An object of the present invention is to provide an anti-ultraviolet flame retardant epoxy resin curing agent, wherein th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/62C07F9/6574
CPCC08G59/623C07F9/657172
Inventor 沈岳吕宏飞沈君岱伍宽平
Owner 江西瀚泰新材料科技有限公司