Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of sulfur-containing silane coupling agent containing long-chain alkoxy group

A sulfur silane coupling agent, alkoxy-containing technology, applied in the field of fine chemicals, can solve the problems of reducing the safety of rubber mixing, affecting the performance of rubber, etc., to save industrial production costs, excellent wear resistance, high efficiency Effect

Pending Publication Date: 2020-09-08
JINGZHOU JIANGHAN FINE CHEM
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Sulfur-containing silane plays a vital role in tire rubber, but the above-mentioned sulfur-containing silane has some defects in the rubber mixing process: for example, when the rubber is mixed at high temperature, the ethoxysilane in the Si69 and Si75 silane molecules is in the inorganic When the surface of the filler reacts, ethanol with a low boiling point is released. Ethanol is easy to vaporize rapidly at high temperature, resulting in many tiny pores in the rubber, which affects the performance of the rubber, and also reduces the safety of rubber mixing.

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
  • Preparation method of sulfur-containing silane coupling agent containing long-chain alkoxy group
  • Preparation method of sulfur-containing silane coupling agent containing long-chain alkoxy group
  • Preparation method of sulfur-containing silane coupling agent containing long-chain alkoxy group

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In a 3000ml four-necked flask, install a mechanical stirrer, a distillation receiving device, a thermometer and a heating device, then add 474g (1mol) of bis-[3-(triethoxysilyl)propyl] disulfide, 340g of disulfide Methyl sulfoxide, 4.5g of stannous chloride, heat the material in the flask to 60-65°C and stir for 0.5h in the stirring state, and the material becomes transparent; then continue to stir and heat, when the temperature of the material reaches 122°C 2060 g (4.05 mol) of isomeric tridecyl alcohol polyoxyethylene ether (TO1307) was added dropwise into the reactor; while stirring while adding dropwise, the ethanol produced by the reaction was recovered by condensation at the same time, and the polyether was added dropwise for 5-6 hours.

[0031] After the material is added dropwise, control the reaction temperature at 122-125°C and continue to stir the reaction for 3-4h; then lower the temperature to 65°C, pump negative pressure and gradually increase the temperatu...

Embodiment 2

[0034] In the four-necked flask of 3000ml, install mechanical stirring, distillation receiving device, thermometer and heating device, then add 539g (1mol) of bis-[3-(triethoxysilane)-propyl]-tetrasulfide, 280g dimethyl sulfoxide, 4.5g of stannous chloride, heat the material in the flask to 60-65°C and stir for 0.5h in the stirring state, and the material becomes transparent; then continue stirring and heating, when the temperature of the material reaches 122°C Then add 2060g (4.05mol) of isomeric tridecyl alcohol polyoxyethylene ether (TO1307) dropwise into the reactor; stir while adding dropwise, and recover the ethanol produced by the reaction at the same time, the polyether dropwise adding time is 5-6h .

[0035] After the material is added dropwise, control the reaction temperature at 122-125°C and continue to stir the reaction for 3-4h; then lower the temperature to 65-75°C, pump negative pressure and gradually increase the temperature to distill and recover ethanol and ...

Embodiment 3

[0038] In a 3000ml four-necked flask, install a mechanical stirrer, a distillation receiving device, a thermometer and a heating device, and then add 364g (1mol) of 3-(octanoylthio)propyltriethoxysilane 300g of dimethyl sulfoxide , 1.2g of stannous chloride, heat the material in the flask to 60-65°C and stir for 0.5h in the stirring state, and the material becomes transparent; then continue to stir and heat, and drop it into the reactor when the temperature of the material reaches 122°C Add 1016g (2mol) of isomeric tridecyl alcohol polyoxyethylene ether (TO1307); stir while adding dropwise, and recover the ethanol produced by the reaction through condensation at the same time. The time for adding polyether is 5-5.5h.

[0039] After the material is added dropwise, control the reaction temperature at 122-125°C and continue to stir the reaction for 3-4h; then lower the temperature to 60-65°C, pump negative pressure and gradually increase the temperature to distill and recover ethano...

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

No PUM Login to View More

Abstract

The invention relates to a preparation method of a long-chain alkoxy sulfur-containing silane coupling agent, and belongs to the technical field of fine chemical engineering. According to the invention, isomeric tridecanol polyoxyethylene ether is adopted to replace a short-chain alkoxy group in a sulfur-containing silane molecular structure; and when the product is applied to rubber mixing, the rubber has excellent wear resistance, tensile strength, strength and other properties, the release of ethanol in the rubber mixing process can be effectively reduced, and good effects on enhancing thesafety and environmental protection level of rubber mixing are achieved.

Description

technical field [0001] The invention relates to a silane coupling agent. Specifically, the invention relates to a preparation method of a long-chain alkoxy-containing sulfur-containing silane coupling agent, which belongs to the technical field of fine chemicals. Background technique [0002] In the production of tire rubber, in order to improve the compatibility of rubber with inorganic fillers such as carbon black and white carbon black, and improve the performance of rubber, sulfur-containing silanes are usually added to rubber, and bis-[3-(triethoxy Silicon) propyl] tetrasulfide (Si69), bis-[3-(triethoxysilyl) propyl] disulfide (Si75). [0003] Rubber production generally uses high-temperature mixing in the internal mixer to mix rubber materials, inorganic fillers (carbon black, white carbon black, etc.), accelerators, vulcanizing agents, sulfur-containing silanes, and other materials. The mixing temperature in the internal mixer is usually Carried out at 150-185°C. Du...

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): C07F7/18C08K5/548C08L21/00
CPCC07F7/1804C07F7/1892C08K5/548C08L21/00
Inventor 王灿靳军陈圣云甘俊甘书官
Owner JINGZHOU JIANGHAN FINE CHEM