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Composite heat stabilizer and production method of high heat stable insoluble sulfur

A production method and technology of stabilizer, applied in the production field of insoluble sulfur, can solve the problems of less than 80% thermal stability

Active Publication Date: 2019-08-02
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

At present, compared with the international advanced level, the thermal stability of insoluble sulfur in China still has some deficiencies. The main performance is that the thermal stability is far below 80% in an oil bath at 105°C. The present invention provides a new The invention of the compound stabilizer and the production of high thermal stability insoluble sulfur, the high thermal stability of insoluble sulfur can reach more than 85% under the condition of 105 ℃, and all performance indicators meet the national standard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0013] The production method of pretreatment compound type stabilizer, carries out following steps successively: with the CS of 50-60 weight part 2 To make a mother liquor, add 2-4 parts by weight of xanthate and 4-5 parts by weight of dibutyl phthalate in sequence, stir for 1-4 hours, stand still for 24 hours, and set aside.

[0014] The production method of secondary compound type stabilizer, carries out following steps successively: with the CS of 50-60 parts by weight 2 To make mother liquor, add 2-4 parts by weight of xanthate, 2-4 parts by weight of benzyl chloride, 6-8 parts by weight of industrial white oil, and 1-3 parts by weight of 2-mercaptobenzothiazole, and stir evenly , put it aside for 24 hours.

[0015] The production method of high-heat-stable insoluble sulfur, the following steps are carried out in sequence: a. First, add 100 parts by weight of insoluble sulfur with a content of more than 90% to 4-6 parts by weight of a pretreatment composite stabilizer, st...

Embodiment 2

[0017] The production method of pretreatment compound type stabilizer, carries out following steps successively: with the CS of 70-80 parts by weight 2 To make a mother liquor, add 5-7 parts by weight of xanthate and 5-6 parts by weight of dibutyl phthalate in sequence, stir for 1-4 hours, stand still for 24 hours, and set aside.

[0018] The production method of secondary composite stabilizer, carries out following steps successively: with the CS of 70-80 weight part 2 To make mother liquor, add 5-7 parts by weight of xanthate, 4-6 parts by weight of benzyl chloride, 6-8 parts by weight of industrial white oil, and 3-4 parts by weight of 2-mercaptobenzothiazole, and stir evenly , put it aside for 24 hours.

[0019] The production method of high-heat-stable insoluble sulfur, the following steps are carried out in sequence: a. First, add 100 parts by weight of insoluble sulfur with a content of more than 90% to 6-8 parts by weight of a pretreatment composite stabilizer, stir e...

Embodiment 3

[0021] The production method of pretreatment compound type stabilizer, carries out following steps successively: with the CS of 60-70 parts by weight 2 To make a mother liquor, add 4-5 parts by weight of xanthate and 4.5-5.5 parts by weight of dibutyl phthalate in sequence, stir for 1-4 hours, stand still for 24 hours, and set aside.

[0022] The production method of secondary compound stabilizer, carries out following steps successively: with the CS of 60-70 weight part 2 To make mother liquor, add 4-5 parts by weight of xanthate, 3-5 parts by weight of benzyl chloride, 6.5-7.5 parts by weight of industrial white oil, and 2-3 parts by weight of 2-mercaptobenzothiazole, and stir evenly , put it aside for 24 hours.

[0023] A method for producing high-heat-stable insoluble sulfur, which comprises the following steps in sequence: a. First, 100 parts by weight of insoluble sulfur with a content of more than 90% is added to 5-7 parts by weight of a pretreatment composite stabiliz...

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Abstract

The invention discloses a complex heat stabilizer, and a production method of insoluble sulfur with high heat stability, and relates to a production method of insoluble sulfur. The method sequentially comprises the following steps: a, adding 100 weight parts of insoluble sulfur of which the content is greater than 90% into 4-8 weight parts of a pretreating complex heat stabilizer, evenly stirring, drying in a drying kettle, distilling until the temperature of the material reaches 75-85 DEG C, and keeping the temperature for 2-3 hours, b, quickly cooling to room temperature, and finishing pre-treatment; c, adding the processed insoluble sulfur to 2-4 parts of a secondary complex heat stabilizer again, stirring for 15-30 minutes, and drying at the temperature of 80-85 DEG C; and d, cooling to room temperature, discharging, charging oil, packaging, and warehousing. The complex heat stabilizer and the production method have the advantages that through detection, according to the heat stabilization method of the insoluble sulfur and the preparation method of the stabilizer of the insoluble sulfur, the heat stability of the obtained insoluble sulfur reaches over 85% at 105 DEG C, reaches 60%-70% at 115 DEG C, and reaches over 50% at 120 DEG C.

Description

technical field [0001] The invention belongs to the production technical field of rubber accelerators, and in particular relates to a production method of insoluble sulfur. Background technique [0002] As an advanced accelerator and vulcanizing agent in the rubber industry, insoluble sulfur is widely used in the manufacture of tires and other rubber composite products, such as tire carcass compounds, buffer compounds, white sidewall compounds, retreads, rubber hoses It can also be used in rubber materials such as cables, rubber rollers, oil seals, rubber shoes and other rubber products, and it can also be used in light-colored rubber products with a large amount of sulfur. Because the insoluble sulfur can make the meridian, steel wire and rubber stick more firmly, effectively prevent the rubber material from blooming, and improve the heat resistance and wear resistance of the tire. Therefore, insoluble sulfur is an essential and important raw material in tire production. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B17/12
Inventor 苗进之刘志勇严敬磊王奎亮李胜利常淑娟
Owner 河南省开仑化工有限责任公司