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Insoluble sulfur efficient stabilizer and preparation method thereof

A technology of sulfur stabilizer and solubility, which is applied in the preparation/purification of sulfur, etc.

Active Publication Date: 2013-03-20
WUXI HUASHENG RUBBER TECHN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to invent a kind of high-efficiency stabilizer for improving the stability of insoluble sulfur and its preparation method for the deficiency of existing insoluble sulfur stabilizer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 0.1 mol of sodium isopropylxanthate to 100 mL of water and stir to dissolve; while stirring, add 0.1 mol of 2-chloromethyl-1,3-butadiene dropwise. After the dropwise addition was completed, stirring was continued at 25° C. for 5 h. After the reaction, the reaction material was transferred into a separatory funnel, and after standing for a period of time, the water layer was separated. The oil layer was washed 3 times with 50 mL of distilled water to obtain an oily product. The weighing calculation product yield is 91.3%.

Embodiment 2

[0019] Add 0.1 mol sodium butyl xanthate to 80 mL water and 20 mL ethanol, stir to dissolve; while stirring, add 0.1 mol benzyl chloride dropwise. After the dropwise addition was completed, stirring was continued at 35° C. for 4 h. After the reaction, the reaction material was transferred into a separatory funnel, and after standing for a period of time, the water layer was separated. The oil layer was washed 3 times with 50 mL of distilled water to obtain an oily product. The weighing calculation product yield is 89.5%.

Embodiment 3

[0021] Add 0.11 mol of sodium ethyl xanthate to 100 mL of water and stir to dissolve; while stirring, add 0.1 mol of 2-chloromethyl-1,3-butadiene dropwise. After the dropwise addition was completed, stirring was continued at 55° C. for 6 h. After the reaction, the reaction material was transferred into a separatory funnel, and after standing for a period of time, the water layer was separated. The oil layer was washed 3 times with 50 mL of distilled water to obtain an oily product. The weighing calculation product yield is 94.8%.

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Abstract

The invention discloses an insoluble sulfur efficient stabilizer and a preparation method thereof, and belongs to the field of fine chemicals and advanced materials. The chemical structural formula of the efficient stabilizer is as follows. The insoluble sulfur efficient stabilizer is made of raw materials of alkyl sodium xanthate and 2-chloromethyl-1, 3-butadiene or benzyl chloride. The insoluble sulfur efficient stabilizer can be used in polymerization, sharp quenching, extraction, oil charge and other links of production of insoluble sulfur, and can obviously improve stability of the insoluble sulfur.

Description

technical field [0001] The invention relates to an insoluble sulfur high-efficiency stabilizer and a preparation method thereof, belonging to the field of fine chemicals and new materials. Background technique [0002] Insoluble sulfur (abbreviated as IS) refers to polymerized sulfur insoluble in carbon disulfide, which is a thermoplastic linear polymer homopolymer. Insoluble sulfur has obvious chemical inertness and physical inertness, and it is not easy to migrate when used in rubber vulcanization, so it can increase the viscosity of vulcanized rubber, prevent frosting, reduce scorch and prolong the storage time of glue. The radial tire produced by using insoluble sulfur as a vulcanizing agent has 30%~50% higher wear resistance than ordinary tires and 1.5 times the life of ordinary tires. Insoluble sulfur has become a special vulcanizing agent for producing high-quality radial tires. [0003] Insoluble sulfur is a metastable substance that may be depolymerized into ordina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/12
Inventor 陈明清刘士荣倪忠斌陈杰施冬健
Owner WUXI HUASHENG RUBBER TECHN
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