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Method for preparing anti-aging agent differential temperature programmed desorption (DTPD)

A technology of anti-aging agent and catalyst, which is applied in the field of preparation of anti-aging agent DTPD, which can solve problems such as uneconomical, increased raw material consumption, and non-compliance with low-carbon principles, and achieve the effect of improving economic benefits and reducing production costs

Inactive Publication Date: 2012-07-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The separated by-products are currently treated by incineration. Incineration is an uneconomical method. On the one hand, it will increase the consumption of raw materials, resulting in an increase in the production cost of DTPD. On the other hand, it does not conform to the low-carbon principle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 100 grams of raw materials, wherein the content of 4-hydroxydiphenylamine is 26.5%, and the content of 2'-methyl-4-hydroxydiphenylamine is 14.3%. Add 26.5 grams of o-toluidine, 1 gram of toluene, and 1.1 grams of ferric chloride, and the temperature rises to react. To the amount of generated water is 3.7 grams, sampling and analysis, the content of 4-hydroxydiphenylamine and 2'-methyl-4-hydroxydiphenylamine in the reaction solution is 1.37%, the reaction solution is cooled to 100 ℃, add water for washing, neutralization, Distilled to obtain DTPD finished product, the initial melting point of 91.4 ℃.

Embodiment 2

[0018] Get 100 grams of raw materials, wherein the content of 4-hydroxydiphenylamine is 22.9%, the content of 2'-methyl-4-hydroxydiphenylamine is 11.5%, add 22.4 grams of o-toluidine, 1 gram of toluene, and 0.9 grams of ferric chloride, and the temperature rise reaction To the amount of generated water is 3.2 grams, sampling and analysis, the content of 4-hydroxydiphenylamine and 2'-methyl-4-hydroxydiphenylamine in the reaction solution is 1.26%, the reaction solution is cooled to 100 ℃, add water for washing, neutralization, Distilled to obtain DTPD finished product, melting point 90.7 ℃.

Embodiment 3

[0020] Take 100 grams of raw materials, wherein the content of 4-hydroxydiphenylamine is 23.4%, and the content of 2'-methyl-4-hydroxydiphenylamine is 17.2%. Add 26.1 grams of o-toluidine, 1 gram of toluene, and 1.0 grams of ferric chloride, and the temperature rises to react. To the amount of generated water is 3.7 grams, sampling and analysis, the content of 4-hydroxydiphenylamine and 2'-methyl-4-hydroxydiphenylamine in the reaction solution is 1.48%, the reaction solution is cooled to 100 ℃, add water for washing, neutralization, Distilled to obtain DTPD finished product, melting point 91.9 ℃.

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PUM

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Abstract

A method for preparing an anti-aging agent differential temperature programmed desorption (DTPD) belongs to the technical field of organic chemistry. Defined amount of o-methylaniline, ferric chloride and toluene are added in about 12%-15% by-product raw material in an anti-aging agent DTPD synthetic process, by means of condensation reaction, 4-hydroxy diphenylamine, 2'-methyl-4-hydroxy diphenylamine in the by-products are converted into effective components of the anti-aging agent DTPD, production cost is reduced, and economic benefits of the DTPD are improved.

Description

technical field [0001] The invention relates to the field of organic chemistry, and relates to a preparation method of anti-aging agent DTPD. Background technique [0002] The anti-aging agent DTPD is a mixture of N, N'-diphenyl-p-phenylenediamine, N-phenyl-N'-o-tolyl-p-phenylenediamine, N, N'-di-o-tolyl-p-phenylenediamine. p-Phenylenediamine anti-aging agent, can prevent ozone, flex and crack resistance performance is similar to anti-aging agent 4010NA and 6PPD, far better than anti-aging agent A, D. The anti-aging agent DTPD has good long-term performance, especially when used together with anti-aging agent 6PPD or 4010NA at a ratio of 1:1, it is the best anti-ozone system to improve the service life of tires. The reason is that the two types of p-phenylenediamine have a synergistic effect. 6PPD or 4010NA provides the necessary short-term protection in the early stage, while the anti-aging agent DTPD provides long-term protection. Since one or two solubilizing groups are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/55C07C209/18C08K5/18C08L21/00
Inventor 王培兰邹宁芬
Owner CHINA PETROLEUM & CHEM CORP
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