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A kind of polymerized rubber stabilizer and preparation method thereof

A stabilizer and polymerization type technology, applied in the field of rubber product additives, can solve the problems of poor compatibility of polymer materials and reduce the performance of rubber products, and achieve excellent polymer compatibility, low volatility and low preparation cost. Effect

Active Publication Date: 2020-05-19
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

However, the existing hindered amine light stabilizers have poor compatibility with polymer materials, and when added to rubber products, the performance of rubber products will be reduced

Method used

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  • A kind of polymerized rubber stabilizer and preparation method thereof
  • A kind of polymerized rubber stabilizer and preparation method thereof
  • A kind of polymerized rubber stabilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 50g of 2-(1',1'-dimethyl-3'-carbonyl-1'-butylamino)-4-methyl-3-pentene and 40g of 2,2,6,6-tetra Methyl-4-aminopiperidine was put into the reactor, 100g of toluene was added and stirred to dissolve, then 2.5g of hydroquinone and 2.5g of sodium acetate were added, and the temperature was raised to 100°C for reflux reaction for 4 hours. After the reaction was completed, the temperature was lowered to After 50°C, wash with water, raise the temperature and reflux to separate the water. After the water separation is completed, cool down to 8°C, precipitate the solid, filter and dry to obtain the monomer 2-(1',1'-dimethyl-3'-(2', 2',6',6'-tetramethyl-4-piperidinylamino)-1'-butylamino)-4-methyl-3-pentene, the product yield is 95.9%.

Embodiment 2

[0028] A kind of preparation method of novel polymerization type rubber stabilizer, comprises the following steps:

[0029] 20g of 2-(1',1'-dimethyl-3'-(2',2',6',6'-tetramethyl-4-piperidinylamino)-1' prepared in Example 1 -Butylamino)-4-methyl-3-pentene is put into the autoclave, add 20g of toluene and stir to dissolve, then add 0.1g vanadium pentoxide, replace the air with nitrogen, and feed nitrogen to make the pressure of the kettle reach 0.6Mp, heat up to 160°C for 8 hours, after the reaction, cool down to 50°C, wash with water, then add 0.1g of activated carbon, heat up, stir, decolorize and dehydrate, filter, and distill the filtrate to obtain the product with a yield of 97.8%.

Embodiment 3

[0031] A kind of preparation method of novel polymerization type rubber stabilizer, comprises the following steps:

[0032] 40g of 2-(1',1'-dimethyl-3'-(2',2',6',6'-tetramethyl-4-piperidinylamino)-1' prepared in Example 1 -Butylamino)-4-methyl-3-pentene is put into the autoclave, add 60g of toluene and stir to dissolve, then add 0.3g vanadium pentoxide, replace the air with nitrogen, feed nitrogen to make the pressure of the kettle reach 0.7Mp, heat up to 165°C and react for 9 hours. After the reaction, cool down to 50°C and wash with water, then add 0.3g of activated carbon to heat up, stir, decolorize and dehydrate, filter, and distill the filtrate to obtain the product with a yield of 98.0%.

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Abstract

The invention belongs to the technical field of auxiliary agents for rubber products, and particularly to a polymerized rubber stabilizer and a preparation method thereof. 2-(1',1'-dimethyl-3'-(2',2',6',6'-tetramethyl-4-piperidinylamino-1'-butylamino)-4-methyl-3-pentene is taken as a raw material; a polymerization reaction is carried out at a high temperature and a high pressure under the action of a catalyst; after the reaction is finished, cooling and washing are carried out; then activated carbon is added for dehydration and decoloration; filtration is carried out; and the filtrate is distilled, so that the polymerized rubber stabilizer provided by the invention is obtained. The polymerized rubber stabilizer is an auxiliary agent which can inhibit or slow the degradation of high-molecular materials caused by photooxidation, the ultraviolet and thermal stability are excellent, the volatility is low, and the compatibility with high-molecular materials is better. When the polymerized rubber stabilizer is added into rubber products, the elasticity, the hardness and the aging resistance of the rubber can be increased, the lubrication effect also can be exerted, and the molecular weight is 2600-3400. The synthesis process provided by the invention is simple, the preparation cost is low, and the yield is high.

Description

technical field [0001] The invention belongs to the technical field of rubber product additives, in particular to a polymeric rubber stabilizer and a preparation method 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. However, the existing hindered amine light stabilizers have poor compatibility with polymer materials, and when added to rubber product...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D211/58C08K5/3435C08L21/00
CPCC07D211/58C08K5/3435C08L2201/08C08L2207/04C08L21/00
Inventor 祝君威胡新利项瞻峰谢胜利
Owner 宿迁联盛科技股份有限公司