Diphenylamine rubber age inhibitor and preparation thereof

The technology of a rubber antioxidant and diphenylamine, which is applied in the field of diphenylamine rubber antioxidant and its preparation, can solve the problems of easy volatilization and the like, and achieve the effects of reducing volatility, low cost and reducing water extractability.

Inactive Publication Date: 2009-01-28
河南省开仑化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Diphenylamine itself is a good anti-aging agent, and its flex resistance is very good, but it is extremely volatile, so it is rarely used as an anti-aging agent

Method used

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  • Diphenylamine rubber age inhibitor and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The diphenylamine rubber antioxidant is prepared by the following method:

[0024] 1) Put diphenylamine, styrene and activated clay into the reaction kettle at a ratio of 10:20:1, and react for 4 hours at a speed of 200 rpm and 250°C to obtain A;

[0025] 2) Put diphenylamine, α-methylstyrene and activated clay into the reactor at a ratio of 10:25:1, and react for 8 hours at a speed of 100 revolutions / min and 200°C to generate B;

[0026] 3) Put A, B and ultra-fine calcium carbonate into the reactor in a ratio of 1:2:3, and stir for 1 hour under the conditions of a rotation speed of 100 revolutions / min and 150°C to obtain an antioxidant product.

Embodiment 2

[0028] 1) Put diphenylamine, styrene and activated clay into the reactor at a ratio of 8:22:1, and react for 5 hours at a speed of 500 rpm and 200°C to obtain A;

[0029] 2) Put diphenylamine, α-methylstyrene and activated clay into the reactor at a ratio of 8:30:1, and react for 10 hours at a speed of 300 revolutions / min and 180°C to generate B;

[0030] 3) Put A, B and superfine calcium carbonate into the reaction kettle in a ratio of 1:2:4, and stir for 2 hours under the conditions of a rotation speed of 300 revolutions / min and 140° C. to obtain an antioxidant product.

Embodiment 3

[0032] 1) Put diphenylamine, styrene and activated clay into the reactor at a ratio of 12:18:1, and react for 3 hours at a speed of 100 revolutions / min and 300°C to obtain A;

[0033] 2) Put diphenylamine, α-methylstyrene and activated clay into the reactor at a ratio of 12:20:1, and react for 6 hours at a speed of 50 rpm and 220°C to generate B;

[0034] 3) Put A, B and superfine calcium carbonate into the reaction kettle at a ratio of 1:2:5, and stir for 0.5 hours at a speed of 50 rpm and 160° C. to obtain an antioxidant product.

[0035] Effect example:

[0036] The antioxidant of Example 1 was used in rubber products.

[0037] The product composition and matching ratio are as follows:

[0038] 65 parts of natural rubber, 35 parts of butadiene rubber, 54 parts of fillers, 0.5 parts of antioxidant 4010NA, 3 parts of antioxidant of Example 1, vulcanization system (sulfur, NOBS, zinc oxide, stearic acid) and 15.3 parts of aromatic oil.

[0039] The physical and mechanical properti...

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PUM

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Abstract

The invention relates to a diphenylamine-typed rubber age inhibitor and a preparation method thereof, belonging to the technical field of rubber age inhibitor production. Diphenylamine, styrene and catalyst are added into a reaction kettle for reacting for 3 to 5 hours at the temperature of 200 DEG C to 300 DEG C, obtaining A; diphenylamine, Alpha-vinyltoluene and catalyst are added into the reaction kettle for reacting for 6 to 10 hours at the temperature of 180 DEG C to 220 DEG C, obtaining B; A, B and superfine calcium carbonate are added into the reaction kettle for stirring for 0.5 to 3 hours at the temperature of 140 DEG C to 160 DEG C, obtaining the diphenylamine-typed rubber age inhibitor. The age inhibitor of the invention is a universal age inhibitor with low price and good comprehensive performance, has the advantages of high effectiveness, long functioning and health caring, and can replace naphthylamine-typed, ursol-typed and ketoamine-typed age inhibitor.

Description

(1) Technical field [0001] The invention belongs to the technical field of production of rubber antioxidants, and specifically relates to a diphenylamine rubber antioxidant and a preparation method thereof. (2) Background technology [0002] With the increasing use of rubber products and the increasingly demanding conditions of use, rubber manufacturers have higher and higher requirements for antioxidants. Naphthylamine antioxidants have been gradually eliminated due to their harmful effects on human health. Amine and ketamine antioxidants are restricted by the price of raw materials, and the market price is relatively high, which increases the cost of rubber manufacturers. Therefore, the research and development of high-efficiency, healthy and inexpensive new general-purpose antioxidants will have broad market prospects. Diphenylamine itself is a good anti-aging agent with very good flexural resistance, but it is very volatile, so it is rarely used as an anti-aging agent. If dip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/18C08K3/26C08L21/00
Inventor 苗进之刘志勇王奎亮张基础薛玉聪毛国先
Owner 河南省开仑化工有限责任公司
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