Cobaltocene cation-based waterborne polyurethane, corrosion inhibitor system and preparation method thereof

A cobaltene cation and water-based technology, applied in the field of chemical anti-corrosion, can solve problems such as environmental pollution, achieve high-efficiency polymerization, and slow down corrosion.

Active Publication Date: 2019-12-17
西北工业大学太仓长三角研究院 +1
View PDF16 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some inorganic heavy metal salt corrosion inhibitors have good corrosion inhibition effect, but their discharge will cause pollution to the environment; polymer corrosion inhibitors are easy to form a single or multi-layer dense protective film on the

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
  • Cobaltocene cation-based waterborne polyurethane, corrosion inhibitor system and preparation method thereof
  • Cobaltocene cation-based waterborne polyurethane, corrosion inhibitor system and preparation method thereof
  • Cobaltocene cation-based waterborne polyurethane, corrosion inhibitor system and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0050] The preparation method of the dihydrocene cobalt cation derivative represented by general formula I, according to figure 1 The compound reacts according to the specified route to obtain one of the following general formulas:

[0051]

[0052] Where: R=-C 6 h 12 ,-C 7 h 6 ,-C 9 h 14 ,-C 13 h 22 .

Embodiment 1

[0053] Embodiment 1: when R=-C 6 h 12 , Preparation of X=Cl

[0054] Dissolve 1 to 5 parts of trimethylsilyl-protected ethynyl cobaltocene hexafluorophosphate and 1 to 10 parts of bis-azido-neopentyl glycol in 20 to 50 mL of anhydrous acetonitrile, and purify oxygen with nitrogen for 30 minutes to obtain solution A ; At the same time, add 0.1 to 1.2 parts of catalyst in another round-bottomed flask, pass nitrogen to remove oxygen for 5-60min, and obtain solution B; the catalyst is CuI or CuBr; then solution A is transferred to solution B under nitrogen protection , after 5-30min, add 1-20 parts of finely ground anhydrous potassium carbonate K 2 CO 3 , 25 ~ 90 ℃ under the protection of nitrogen to react for 10 ~ 48h to obtain a suspension; filter the reacted suspension, rinse with acetonitrile, and then concentrate by rotary evaporation to obtain a concentrated solution; add the concentrated solution dropwise to diethyl ether, collect the precipitate, and finally pass After...

Embodiment 2

[0063] The concentration of hydrochloric acid solution is 4.0mol / L, the dosage of hydrochloric acid solution is 150mL, the dosage of cobaltocene-based waterborne polyurethane (PU-HDI) is 20mg / L, and 10# steel is immersed in the acid solution at 25°C for 2-6 hours.

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 cobaltocene cation-based aqueous polyurethane, a corrosion inhibitor system and a preparation method thereof. An active functional group, namely alcohol hydroxyl, is introduced to cobaltocene cation by taking a triazole ring as a connecting group, and then the cobaltocene cation-based aqueous polyurethane is obtained through simple and convenient step-by-step addition polymerization reaction and ion exchange reaction, thereby realizing low-cost synthesis and high-efficiency polymerization. The structure of the target cobaltocene cation-based aqueous polyurethane has many advantages of inorganic, organic and polymer corrosion inhibitors compared with corrosion inhibitors commonly used at present. The product of the cobaltocene cation-based aqueous polyurethane can be used as a corrosion inhibitor to slow down the corrosion of hydrochloric acid to iron and steel products in practical applications such as pickling.

Description

technical field [0001] The invention belongs to the field of chemical anticorrosion, and relates to a cobaltocene-based waterborne polyurethane, a corrosion inhibitor system and a preparation method. Background technique [0002] Metals and their alloys are one of the most important structural materials, and their applications range from daily life to electrical and mechanical manufacturing to construction, military and other fields. With the rapid development of my country's economy, the domestic demand for metal materials and steel is also rising rapidly. However, metal materials such as iron and steel, which are industrial skeletons, have serious corrosion problems. For example, in the shipping industry, the exterior of the hull is exposed to severe corrosion if it is soaked in seawater for a long time; various transportation pipelines in the petrochemical industry also face serious corrosion problems due to long-term exposure to some chemicals. Corrosion in a broad sen...

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): C08G18/76C08G18/75C08G18/73C08G18/32C23F11/00
CPCC08G18/3897C08G18/73C08G18/755C08G18/758C08G18/7614C23F11/00
Inventor 颜静闫毅李学装张军平关昊
Owner 西北工业大学太仓长三角研究院
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