Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of cysteamine derivative and its preparation method and application as carbon steel pickling corrosion inhibitor

A technology of cysteamine and derivatives, which is applied in the field of cysteamine derivative corrosion inhibitors and their preparation, can solve the problems of high toxicity and environmental pollution, and achieve the effects of high corrosion inhibition rate, small dosage and mild reaction conditions

Active Publication Date: 2021-07-30
HENAN UNIVERSITY
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional pickling corrosion inhibitors are mostly inorganic corrosion inhibitors, such as chromate, nitrate, nitrite, etc., but these corrosion inhibitors usually have the disadvantages of high toxicity and serious environmental pollution.

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
  • A kind of cysteamine derivative and its preparation method and application as carbon steel pickling corrosion inhibitor
  • A kind of cysteamine derivative and its preparation method and application as carbon steel pickling corrosion inhibitor
  • A kind of cysteamine derivative and its preparation method and application as carbon steel pickling corrosion inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A preparation method for cysteamine derivatives, specifically: add cysteamine (77 g) and ethylene glycol diglycidyl ether (87 g) in a round-bottomed flask, add 150 mL of methanol as a solvent, and control the reaction temperature to 20°C, stirred for 3 h. After the reaction was completed, the solvent was distilled off under reduced pressure, and 131.5 g of a brown solid was obtained after washing with acetone, which was a cysteamine derivative, and the yield was 80.5%.

Embodiment 2

[0041] A preparation method of cysteamine derivatives, specifically: add cysteamine (77 g) and ethylene glycol diglycidyl ether (87 g) in a round bottom flask, add 150 mL of ethanol as a solvent, and control the reaction temperature to 20°C, stirred for 3 h. After the reaction was completed, the solvent was distilled off under reduced pressure, and 128.9 g of a brown solid was obtained after washing with acetone, which was a cysteamine derivative, and the yield was 78.6%.

Embodiment 3

[0043] A preparation method of cysteamine derivatives, specifically: add cysteamine (77 g) and ethylene glycol diglycidyl ether (87 g) in a round bottom flask, add 150 mL of ethanol as a solvent, and control the reaction temperature to 10°C, stirred for 5 h. After the reaction was completed, the solvent was distilled off under reduced pressure, and 136.0 g of a brown solid was obtained after washing with acetone, which was a cysteamine derivative, and the yield was 82.9%.

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 present invention relates to a cysteamine derivative. The molecular structure of the cysteamine derivative is as follows: The present invention also provides the application of the above-mentioned cysteamine derivatives as corrosion inhibitors for pickling carbon steel. The cysteamine derivative has a hyperbranched molecular structure and contains heteroatoms such as N, O, and S, which is conducive to the formation of an adsorption layer on the surface of carbon steel, thereby effectively inhibiting the corrosion reaction that occurs when the carbon steel material is in contact with the cleaning solution . The corrosion inhibitor of the present invention has a pure organic structure, has the characteristics of less dosage, high slow-release rate, degradability, environmental friendliness, etc., and conforms to the development trend of corrosion inhibitors.

Description

technical field [0001] The invention belongs to the technical field of pickling corrosion and protection of carbon steel materials, and in particular relates to a cysteamine derivative corrosion inhibitor used to prevent or slow down the corrosion of carbon steel materials in the pickling process and its preparation method and application . Background technique [0002] In the 21st century with the rapid development of the global economy, the efficient use of resources has become one of the important criteria to measure the level and quality of a country's development. In industrial production, carbon steel materials are more and more widely used. During the processing and application of carbon steel materials, pickling solutions such as sulfuric acid and hydrochloric acid are often used to descale or derust them. However, while the pickling solution removes scale and rust, it will also have a significant corrosion effect on carbon steel materials or equipment, and is ofte...

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): C07C323/25C07C319/12C23G1/06C23G1/08
CPCC07C323/25C23G1/065C23G1/081
Inventor 张磊赵文善许英徐燕华柴春晓
Owner HENAN UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com