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A kind of production method of highly dispersed and highly stable insoluble sulfur

A high-stability, high-dispersibility technology, applied in the preparation/purification of sulfur, can solve the problems of poor thermal stability and dispersibility of insoluble sulfur, improve thermal stability and dispersibility, and ensure full play and compatibility good sex effect

Active Publication Date: 2020-05-19
SHANGHAI JINGHAI ANHUI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the relatively poor thermal stability and dispersibility of the insoluble sulfur produced by the existing domestic process, and provide a production method for insoluble sulfur with high dispersibility and high stability

Method used

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  • A kind of production method of highly dispersed and highly stable insoluble sulfur

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Embodiment 1

[0028] The production method of a highly dispersed and highly stable insoluble sulfur in this embodiment uses liquid sulfur as a raw material, and adopts a gasification-quick cooling method to prepare medium-grade insoluble sulfur, and then sequentially extracts, dries, and The insoluble sulfur product is obtained by sieving and oil-extended treatment, wherein an appropriate amount of stabilizer is added to the obtained medium-grade insoluble sulfur after being extracted and dried, and an appropriate amount of fatty alcohol polyoxyethylene ether is added to it during oil-extended treatment , the above stabilizer is prepared from ammonium persulfate, ethyl sodium xanthate and iodine. Specifically, the mass ratio of ammonium persulfate and ethyl sodium xanthate in the stabilizer of this embodiment is 3:4, and the mass ratio of the mother liquor formed by ammonium persulfate and ethyl sodium xanthate to iodine is 119:1. And the addition amount of stabilizer is 2% of the obtained ...

Embodiment 2

[0051] A kind of production method of highly dispersed high stability insoluble sulfur of the present embodiment, its difference to embodiment 1 mainly is: the mass ratio of ammonium persulfate and ethyl sodium xanthate is 3 in the stabilizing agent of the present embodiment: 5. The mass ratio of mother liquor formed by ammonium persulfate and ethyl sodium xanthate to iodine is 121:1, and the amount of stabilizer added is 3% of the mass of the obtained insoluble sulfur product, and the amount of fatty alcohol polyoxyethylene ether added is It is 0.4% of the total weight of the obtained insoluble sulfur finished product. The extract of this embodiment selects CS 2 , when drying after extraction, the extracted medium-grade insoluble sulfur and stabilizer are evenly mixed and placed in a drying pot, heated by hot water to raise the product temperature from 15°C to 60°C for drying, and then the dried The product is sieved with a 100-150 mesh screen to obtain an insoluble sulfur s...

Embodiment 3

[0054] A kind of production method of highly dispersed and highly stable insoluble sulfur of the present embodiment, its difference to embodiment 2 mainly lies in: the mass ratio of ammonium persulfate and ethyl sodium xanthate in the stabilizer of the present embodiment is 3: 4. The mass ratio of mother liquor formed by ammonium persulfate and ethyl sodium xanthate to iodine is 120:1, and the amount of stabilizer added is 3% of the mass of the obtained insoluble sulfur product, and the amount of fatty alcohol polyoxyethylene ether added is It is 0.5% of the total weight of the obtained insoluble sulfur finished product. In this embodiment, when the insoluble sulfur semi-finished product is mixed with rubber oil for oil extension treatment, the mixing mass percentages of the insoluble sulfur semi-finished product and rubber oil are 80% and 20% respectively. The thermal stability and dispersibility of the product obtained in this embodiment are closer to the product obtained in...

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Abstract

The invention discloses a production method of high-dispersibility high-stability insoluble sulphur, and belongs to the technical field of sulphur production. The production method of high-dispersibility high-stability insoluble sulphur comprises the following steps that liquid sulphur is used as raw materials; a gasification-sharp cooling method is used for preparation to obtain middle-grade insoluble sulphur; then, the middle-grade insoluble sulphur is sequentially subjected to extraction, drying, sieving and oil filling treatment to obtain the insoluble sulphur product, wherein when the obtained middle-grade insoluble sulphur is subjected to drying treatment after the extraction, a proper amount of stabilizing agents are added; in addition, during oil filling treatment, a proper amountof fatty alcohol-polyoxyethylene ether is added; the stabilizing agents are prepared from ammonium persulfate, sodium ethyl xanthate and iodine. By using the production method provided by the invention, the thermal stability and dispersion performance of the insoluble sulphur can be effectively improved, so that the application effect is ensured.

Description

technical field [0001] The invention belongs to the technical field of sulfur production, and more specifically relates to a production method of highly dispersible and highly stable insoluble sulfur. Background technique [0002] Insoluble sulfur, also known as elastic sulfur or polymeric sulfur, is a linear polymer formed by the polymerization of a large number of sulfur atoms. The relative molecular weight can reach tens of thousands. It is a non-toxic, flammable yellow powder obtained because it is insoluble in carbon disulfide. It is an allotrope and a polymer modified variety of high-polymerization form of ordinary sulfur. At present, the vast majority of insoluble sulfur is used in the rubber industry, as a high-grade accelerator and vulcanizing agent in the rubber industry, it is widely used in the production of tires and other rubber composite products, such as tire carcass rubber, buffer rubber It can also be used in rubber materials such as cables, rubber rollers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L91/00C08L71/02C08K3/06C08K3/30C08K3/02C01B17/12
CPCC01B17/12C08K3/02C08K3/06C08K3/30C08L71/02C08L91/00
Inventor 陈杰胡建敏
Owner SHANGHAI JINGHAI ANHUI CHEM
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