Process for preparing gamma-mercaptopropyl-trimethyloxysilane

A technology of mercaptopropyltrimethoxysilane and chloropropyltrimethoxysilane is applied in the field of synthesis of fine chemicals, can solve the problems of low yield, complicated operation and the like, and achieves high yield, good purity and product cost low effect

Inactive Publication Date: 2004-08-18
湖北武大有机硅新材料股份有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If adopting the preparation method of analogue γ-mercaptopropyltriethoxysilane to synthesize γ-mercaptopropyltrimethoxysilane, its yield is low, only about 55%, content>90%, complex operation, and preparation process It needs to be filtered three times and washed with a large amount of methanol

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
  • Process for preparing gamma-mercaptopropyl-trimethyloxysilane
  • Process for preparing gamma-mercaptopropyl-trimethyloxysilane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0013] Example: Dry thiourea and potassium iodide at 100-105°C for 4 hours, add 60g of γ-chloropropyltrimethoxysilane, 28g of dried thiourea, 32g of methanol, and 0.7 g, heat and stir, reflux at 69-73°C for 24 hours, cool down to 60°C, add 10g of ethylene glycol dropwise, stir at 70-73°C for 0.5 hours, change to a distillation device, distill off the solvent methanol, and then depressurize to 4132~4266Pa (31~32mmHg), the product collected at 140~150°C is γ-mercaptopropyltrimethoxysilane, the yield is 78%, and the product content is ≥98%.

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

A process for preapring gamma-mercaptopropyl trimethoxysilane includes reflux reaction of the raw material (gamma-chloropropyl trimethoxysilane and thiourea), solvent (absolute alcohol) and promoter (potassium iodide) and alkalifying by ethanediamine. Its advantages are simple process, high yield (78%), high purity (more than 98%), low cost and no pollution.

Description

technical field [0001] The invention relates to a preparation method of γ-mercaptopropyltrimethoxysilane, which belongs to the synthesis of fine chemicals. Background technique [0002] γ-mercaptopropyltrimethoxysilane is an important silane coupling agent, which is widely used in epoxy resin, polyurethane, polyester, styrene-butadiene rubber and natural rubber to improve the performance of these composite materials; it can also be used in Prepare mercapto-based modified silicone oil, improve the cohesiveness of vulcanized rubber at room temperature, and can also be used as a perm agent, fabric finishing agent and prepare metal surface protective agent. [0003] The synthesis method of γ-mercaptopropyltrimethoxysilane has not been reported. If adopting the preparation method of analogue γ-mercaptopropyltriethoxysilane to synthesize γ-mercaptopropyltrimethoxysilane, its yield is low, only about 55%, content>90%, complex operation, and preparation process The medium needs...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/18
Inventor 张治民廖俊陈圣云朱文喜张彦谦
Owner 湖北武大有机硅新材料股份有限公司
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