Light stabilizer and preparation method thereof

A light stabilizer and organic solvent technology, applied in the field of light stabilizer and its preparation process, can solve the problems of easy migration of hindered amine molecules, poor compatibility of industrial solvents, intolerance to pesticides, etc., and achieve superior polymer compatibility, Good compatibility, not easy to volatilize

Active Publication Date: 2017-08-11
宿迁联盛科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention solves the technical problems existing in the prior art, such as easy migration of hind

Method used

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  • Light stabilizer and preparation method thereof
  • Light stabilizer and preparation method thereof
  • Light stabilizer and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0025] A preparation method of light stabilizer, comprising the following steps:

[0026] Add 92g of acetone solvent into a 500ml four-necked bottle, cool down to 0-5°C in an ice-water bath, add 18.45g of cyanuric chloride, and add 21.2g of N-butyl-2 dropwise under the condition of controlling the temperature at 5-10°C. 2,6,6-Tetramethyl-4-piperidinamine, the dropwise addition was completed in about 20 minutes, after the dropping, the temperature was controlled at 5-10°C for 3 hours, and the gas phase detection raw material N-butyl-2,2,6, After the reaction of 6-tetramethyl-4-piperidinamine is complete, add 8.7g of morpholine dropwise, and then add 12.3g of sodium hydroxide solution with a mass fraction of 30% dropwise, raise the temperature to 60°C for 3 hours, and the reaction is complete After cooling, washing with water, filtering and drying to obtain 37.8g solid intermediate, the yield is 92.19%;

[0027] In the autoclave with a volume of 500ml, add 55g of acetone solven...

Embodiment 2

[0030] A preparation method of light stabilizer, comprising the following steps:

[0031] Add 110g of xylene solvent into a 500ml four-necked bottle, cool down to 0-5°C in an ice-water bath, add 18.45g of cyanuric chloride, and dropwise add 21.5g of N-butyl-2 under the condition of controlling the temperature at 5-10°C , 2,6,6-Tetramethyl-4-piperidinamine, the dropwise addition was completed in about 20 minutes, and the temperature was controlled at 5-10°C for 4 hours after the dropping, and the raw material N-butyl-2,2,6 was detected by gas phase , the reaction of 6-tetramethyl-4-piperidinamine is complete, and then 8.9g of morpholine is added dropwise, and then 13.4g of sodium hydroxide solution with a mass fraction of 30% is added dropwise, and the temperature is raised at 65°C for 4h, and the reaction After completion, the temperature was lowered, washed with water, filtered and dried to obtain 37.0 g of solid intermediate with a yield of 90.24%;

[0032] In the autoclave...

Embodiment 3

[0035] A preparation method of light stabilizer, comprising the following steps:

[0036] Add 130g of DMF solvent into a 500ml four-necked bottle, cool down to 0-5°C in an ice-water bath, add 18.45g of cyanuric chloride, and add 21.2g of N-butyl-2 dropwise under the condition of controlling the temperature at 5-10°C, 2,6,6-Tetramethyl-4-piperidinamine, the dropwise addition was completed in about 20 minutes, and the temperature was controlled at 5-10°C to react for 5h after the dropping, and the gas phase detection raw material N-butyl-2,2,6, After the reaction of 6-tetramethyl-4-piperidinamine is complete, add 8.7g of morpholine dropwise, then add 13.4g of sodium hydroxide solution with a mass fraction of 30% dropwise, heat up to 70°C for 5 hours, and the reaction is complete After cooling, washing with water, filtering and drying to obtain 37.6g solid intermediate, the yield is 91.71%;

[0037] In the autoclave with a volume of 500ml, add 86g of DMF solvent, add 37.6g of in...

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Abstract

The invention belongs to the technical field of macromolecular material performance additives, and particularly relates to a light stabilizer and a preparation method thereof. The preparation method comprises the steps: using morpholine, N-butyl-2,2,6,6-tetramethyl-4-piperidinamine, 2,4,6-trichloro-1,3,5-triazine(cyanuric chloride), N,N'-bis(3-aminopropyl)ethanediamine and an alkali as raw materials, selecting xylene, methylbenzene or chloroform as a solvent for reaction, and synthesizing a novel light stabilizer through controlling the reaction temperature, adjusting the suitable feed ratio and pressurizing to promote the reaction. The light stabilizer has the advantages of pesticide resistance, low alkalinity and small environmental pollution, has good intermiscibility with most industrial solvents, and has excellent macromolecule intermiscibility. The light stabilizer can be added into plastics, rubber or coatings to relieve the aging and decomposing and extend the service life. In the processing and using, peculiar smell cannot be generated, and the original color of the materials cannot be affected. The light stabilizer has the advantages of high temperature resistance, difficulty in volatilization, excellent stability and low cost.

Description

technical field [0001] The invention belongs to the field of polymer material modification aids, in particular to a light stabilizer and a preparation process thereof. Background technique [0002] Light stabilizer is an additive of polymer products, it can shield or absorb the energy of ultraviolet rays, quench singlet oxygen and decompose hydroperoxide into inactive substances, etc. , can eliminate or slow down the possibility of photochemical reaction, prevent or delay the process of photoaging, so as to achieve the purpose of prolonging the service life of polymer products. [0003] Hindered amines are a class of organic amine compounds with steric hindrance, which have a good inhibitory effect on the photo-oxidative degradation of polymers and organic compounds, and are a class of light stabilizers with excellent performance. [0004] There are many hindered amine light stabilizers in the prior art. Traditional hindered amines have low molecular weight and are prone to...

Claims

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Application Information

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IPC IPC(8): C07D401/14C08K5/3492C08L23/06
CPCC07D401/14C08J5/18C08J2323/06C08K5/3492C08L2201/08C08L2203/16C08L23/06
Inventor 项瞻波项瞻峰谢胜利胡新利祝君威
Owner 宿迁联盛科技股份有限公司
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