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Improved type synthesis process of rubber aid

A synthesis process and technology of rubber additives, applied in the field of improved synthesis process of rubber additives, can solve the problems of destroying the elastic structure of rubber, reducing the service life of nitrile rubber, becoming hard and brittle, etc., to improve economic benefits and save money. Low synthesis cost and low environmental pollution

Inactive Publication Date: 2018-06-15
昕中和成都胶业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the thermo-oxidative aging process of nitrile rubber, the products after chain breaking are mainly interwoven together, which destroys the elastic structure of the rubber, becomes hard and brittle, and greatly reduces the service life of nitrile rubber.

Method used

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  • Improved type synthesis process of rubber aid

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The invention provides an improved synthetic process for rubber additives, the specific steps of which are:

[0036] Step 1, add N-(4-methylphenyl) 2-N'-(1,3-dimethylbutyl) p-phenylenediamine anti-aging agent and N,N'-diphenyl-p-phenylenediamine anti-aging At the same time, add the acetone organic solvent and stir evenly, then add vinyl stearic acid amide and mix evenly to obtain a mixed solution;

[0037] Step 2, under stirring conditions, add water and ethyl acrylate to the mixed solution prepared in the step 1, after mixing evenly, continue to add p-hydroxyanisole dropwise, control the reaction temperature to 50°C; control p-hydroxybenzene The dropping time of methyl ether is 10min, and the stirring speed is 100r / min;

[0038] Step 3, step 3, after the p-hydroxyanisole was added dropwise in step 2, the temperature was raised to 80°C, and the heating rate was controlled to be 2°C / min. The finished product is obtained after extraction, washing and drying.

[0039] W...

Embodiment 2

[0048] The invention provides an improved synthetic process for rubber additives, the specific steps of which are:

[0049] Step 1, add N-(4-methylphenyl) 2-N'-(1,3-dimethylbutyl) p-phenylenediamine anti-aging agent and N,N'-diphenyl-p-phenylenediamine anti-aging At the same time, add the acetone organic solvent and stir evenly, then add vinyl stearic acid amide and mix evenly to obtain a mixed solution;

[0050] Step 2, under stirring conditions, add water and ethyl acrylate to the mixed solution prepared in the step 1, after mixing evenly, continue to add p-hydroxyanisole dropwise, control the reaction temperature to 50°C; control p-hydroxybenzene The dropping time of methyl ether is 15min, and the stirring speed is 100r / min;

[0051] Step 3, step 3, after the p-hydroxyanisole was added dropwise in step 2, the temperature was raised to 80°C, and the heating rate was controlled to be 2°C / min. The finished product is obtained after extraction, washing and drying.

[0052] W...

Embodiment 3

[0061] The invention provides an improved synthetic process for rubber additives, the specific steps of which are:

[0062] Step 1, add N-(4-methylphenyl) 2-N'-(1,3-dimethylbutyl) p-phenylenediamine anti-aging agent and N,N'-diphenyl-p-phenylenediamine anti-aging At the same time, add the acetone organic solvent and stir evenly, then add vinyl stearic acid amide and mix evenly to obtain a mixed solution;

[0063] Step 2, under stirring conditions, add water and ethyl acrylate to the mixed solution prepared in the step 1, after mixing evenly, continue to add p-hydroxyanisole dropwise, control the reaction temperature to 50°C; control p-hydroxybenzene The dropping time of methyl ether is 12min, and the stirring speed is 95r / min;

[0064]Step 3, step 3, after the p-hydroxyanisole was added dropwise in step 2, the temperature was raised to 80°C, and the heating rate was controlled to be 2°C / min. The finished product is obtained after extraction, washing and drying.

[0065] Whe...

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Abstract

The invention discloses an improved type synthesis process of a rubber aid. The synthesis process particularly comprises the following steps: adding an N-(4-methyl phenyl)2-N'-(1,3-dimenthyl butyl)p-phenylenediamine anti-ageing agent and an N,N'-diphenyl p-phenylenediamine anti-ageing agent into an acetone organic solvent simultaneously, stirring uniformly, adding vinyl stearate amide, and mixinguniformly to obtain a mixed solution; under the stirring condition, adding water and ethyl acrylate into the mixed solution, continuously adding para-hydroxybenzole dropwise after mixing uniformly, and controlling the reaction temperature to 50 DEG C, and after complete dropwise addition of the para-hydroxybenzole, heating to 80 DEG C, continuously performing reaction, cooling to room temperature,and performing extraction, washing, and drying to obtain a finished product. According to the synthesis process provided by the invention, the integrated step is simple, preparation of the anti-ageing agent can be completed at low temperature and within short time, the synthesis cost is greatly reduced and the economic benefit is improved.

Description

technical field [0001] The invention relates to the synthesis of rubber additives, in particular to an improved synthesis process of rubber additives. Background technique [0002] Nitrile rubber is produced by emulsion polymerization of butadiene and acrylonitrile. Nitrile rubber is mainly produced by low-temperature emulsion polymerization. It has excellent oil resistance and high wear resistance. During long-term storage and use of rubber and its products, due to the effects of heat, oxygen, ozone, variable-valent metal ions, mechanical stress, light, high-energy rays, and other chemical substances and molds, etc., they will gradually become sticky and change. Hard and brittle or cracked. This decrease in physical and mechanical properties and elasticity over time is called aging. [0003] Thermal oxygen aging, increasing the temperature can cause thermal cracking or thermal crosslinking of rubber, but the basic function of heat is activation, increasing the diffusion r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/18C08K5/20C08K5/13C08L9/02
CPCC08K5/18C08K5/13C08K5/20C08K2201/014C08L9/02C08L2201/08
Inventor 吴佳伟雷宇袁海桃
Owner 昕中和成都胶业有限公司
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