Rubber accelerator selenobenzothiazole as well as preparation method and application thereof

A technology of rubber accelerator and benzothiazole, which is applied in the field of rubber accelerator selenobenzothiazole and its preparation, can solve the problems of short scorch time, fast vulcanization speed, easy scorch, etc., achieve short reaction time, avoid Wastewater, simple operation effect

Active Publication Date: 2020-11-17
SOUTH CHINA UNIV OF TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In Zhu Lixin, Hou Yujie, Wu Lianghui, Yu Chong, Shi Chuan. A preparation method of rubber accelerator diethyl dithiocarbamate selenium [P].CN110272365A, 2019-09-24. Introduced a dithio The preparation method of the sele

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rubber accelerator selenobenzothiazole as well as preparation method and application thereof
  • Rubber accelerator selenobenzothiazole as well as preparation method and application thereof
  • Rubber accelerator selenobenzothiazole as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] Example 1

[0034] Dissolve 0.55 (0.005mol) of selenium dioxide in 100ml of absolute ethanol under stirring at 500rpm, and dissolve 3.34g (0.02mol) of 2-mercaptobenzothiazole in 100ml of absolute ethanol under stirring at 500rpm. The two solutions are mixed uniformly, the reaction temperature is controlled to 50° C., and after the reaction is kept for 12 hours, the filter residue is filtered while hot, washed, dried, and crushed to obtain the rubber accelerator selenobenzothiazole. The yield of the obtained product was 89.9%, the melting point of the product was 173°C, and the decomposition temperature was 210°C.

Example Embodiment

[0035] Example 2

[0036] Dissolve 0.55 (0.005 mol) selenium dioxide in 150 ml of absolute ethanol under stirring at 300 rpm. Dissolve 4.18 g (0.025 mol) of 2-mercaptobenzothiazole in 150 ml of absolute ethanol under stirring at 300 rpm. The two solutions are mixed uniformly, the reaction temperature is controlled to 30° C., and after the reaction is kept for 10 hours, the filter residue is filtered while hot, washed, dried, and pulverized to obtain the rubber accelerator selenobenzothiazole. The yield of the obtained product was 91.2%, the melting point of the product was 174°C, and the decomposition temperature was 208°C.

Example Embodiment

[0037] Example 3

[0038] Dissolve 0.55 (0.005mol) of selenium dioxide in 150ml of absolute ethanol under 400rpm stirring conditions, and dissolve 5.01g (0.03mol) of 2-mercaptobenzothiazole in 150ml of absolute ethanol under 400rpm stirring conditions. The two solutions are uniformly mixed, the reaction temperature is controlled to 30° C., and after 6 hours of heat preservation and reaction, the filter residue is filtered while hot, washed, dried, and crushed to obtain the rubber accelerator selenobenzothiazole. The yield of the product obtained was 88.5%, the melting point of the product was 174°C, and the decomposition temperature was 209°C.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Melting pointaaaaaaaaaa
Decomposition temperatureaaaaaaaaaa
Decomposition temperatureaaaaaaaaaa
Login to view more

Abstract

The invention discloses a rubber accelerator selenobenzothiazole as well as a preparation method and application thereof. The method comprises the following steps: respectively dissolving selenium dioxide and 2-mercaptobenzothiazole in an organic solvent in a stirring state to obtain a selenium dioxide solution and a 2-mercaptobenzothiazole solution; and then uniformly mixing the selenium dioxidesolution and the 2-mercaptobenzothiazole solution, raising a temperature for a heating reaction, carrying out suction filtration while the solution is hot, taking filter residues, and washing, dryingand crushing the filter residues to obtain the rubber accelerator selenobenzothiazole. The rubber accelerator selenobenzothiazole of the invention is environment-friendly and pollution-free, and has vulcanization accelerating effect superior to the vulcanization accelerating effect of conventional thiazole accelerators. Ethanol can be used as an organic solvent, and can be recycled after the reaction is finished, so the generation of wastewater is completely avoided, and the method is green and environment-friendly. A synthesis process adopted by the invention is a one-pot method, operation issimple, and reaction time is short. The application range of the selenobenzothiazole is expanded, and the promotion efficiency of the selenobenzothiazole is higher than the promotion efficiency of the existing thiazole promoters (M and DM).

Description

technical field [0001] The invention relates to the field of rubber vulcanization accelerators, in particular to a rubber accelerator selenobenzothiazole and its preparation method and application. Background technique [0002] The process of cross-linking rubber is called vulcanization, and the substance that cross-links rubber is called a vulcanizing agent, that is, a cross-linking agent. Vulcanization is the last process of rubber product forming and processing, and it is also the most important physical-chemical process. Unvulcanized rubber has no practical use value. Vulcanization transforms the unvulcanized compounded rubber into vulcanized rubber, and the rubber macromolecules transform from linear chains to three-dimensional network macromolecules, so that rubber products obtain excellent physical, mechanical and chemical properties. [0003] The sulfur vulcanization process has the longest history, and the raw materials used are cheap and abundant. It is the most e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C07D277/68C08K5/48C08L9/06
CPCC07D277/68C08K5/48C08L9/06
Inventor 朱立新江涛杨豪杰颜鹏
Owner SOUTH CHINA UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap