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

Preparation method of N,N-dimethyl-N-fatty alcohol polyethenoxy ether-base carboxymethyl lycine

A technology of alcohol polyoxyethylene ether and carboxymethyl beet, which is applied in the preparation of organic compounds, cyanide reaction preparation, chemical instruments and methods, etc., and can solve the problems of unavoidable toxicity, many process steps, and harmful environment and production equipment Hydrogen halide and other problems, to achieve the effect of excellent surfactant properties

Inactive Publication Date: 2013-03-13
JIANGNAN UNIV
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former Ministry of Light Industry Taiyuan Household Chemistry Research Institute Wang Rulin and others used fatty alcohol polyoxyethylene ether as raw material to obtain a non-cationic mixed surfactant long alkyl chain alcohol ether trimethyl through two-step reaction of chlorination and quaternization ammonium chloride, but this technique can produce harmful hydrogen halides to environment and production equipment; The starting material of the process route is aliphatic alcohol, which needs to undergo multi-step reactions such as epoxidation addition, chlorination, and quaternization, and it is also difficult to avoid the generation of by-product hydrogen halide; Zhang Jian et al. The preparation method of ethylene glycol-based tertiary amine has many process steps and still cannot avoid the formation of toxic by-products

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 N,N-dimethyl-N-fatty alcohol polyethenoxy ether-base carboxymethyl lycine
  • Preparation method of N,N-dimethyl-N-fatty alcohol polyethenoxy ether-base carboxymethyl lycine
  • Preparation method of N,N-dimethyl-N-fatty alcohol polyethenoxy ether-base carboxymethyl lycine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1 Preparation of N,N-dimethyl-N-fatty alcohol polyoxyethylene ether carboxymethyl betaine

[0019] Take 35g of fatty alcohol polyoxyethylene ether (3) sulfate sodium salt AES, 35g of dimethylamine, and 25g of deionized water in a reactor, airtightly stir and heat to 145°C for 12 hours, then remove unreacted dimethylamine; After adding 6.25g of sodium chloroacetate and 23.75g of ethanol, adjust the pH of the system to 8 with sulfuric acid and control the reaction temperature to 70°C; keep the reaction for 8 hours to obtain the product N,N-dimethyl-N-fatty alcohol polyoxyethylene Ether Carboxymethyl Betaine 34.3g, its infrared spectrum is attached figure 1 Shown. 2960cm -1 , 2929cm -1 , 2854cm -1 Nearby is the C-H stretching vibration absorption peak of saturated alkane group, 1727cm -1 , 1630cm -1 Nearby is the C-O stretching vibration absorption peak of the carbonyl group, 1465cm -1 , 1395cm -1 Nearby is the C-H flexural vibration absorption peak of methyl and meth...

Embodiment 2

[0021] Example 2 Preparation of N,N-dimethyl-N-fatty alcohol polyoxyethylene ether carboxymethyl betaine

[0022] Take 250g of fatty alcohol polyoxyethylene ether (3) sulfate sodium salt AES, 250g parts of dimethylamine, and 250g of deionized water in the reactor, airtightly stir and heat to 185°C for 8 hours, then remove unreacted dimethylamine After adding 50g of potassium chloroacetate and 200g of ethanol, adjust the pH of the system to 10 with hydrochloric acid, and control the reaction temperature to 100℃; keep the reaction for 4 hours to obtain the product N,N-dimethyl-N-fatty alcohol polyoxyethylene ether 247g of carboxymethyl betaine.

Embodiment 3

[0023] Example 3 Preparation of N,N-dimethyl-N-fatty alcohol polyoxyethylene ether carboxymethyl betaine

[0024] Take 3kg of fatty alcohol polyoxyethylene ether (3) sulfate sodium salt AES, 3kg of dimethylamine, and 1.5kg of deionized water in the reactor, stir tightly and raise the temperature to 180°C for 10 hours, then remove unreacted dimethylamine After adding 1kg of sodium chloroacetate and 1.5kg of ethanol, adjust the pH of the system to 9.0 with phosphoric acid and control the reaction temperature to 85°C; keep the reaction for 6.5 hours to obtain the product N,N-dimethyl-N-fatty alcohol polyoxyethylene Ether carboxymethyl betaine 2.92 kg.

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 discloses a preparation method of N,N-dimethyl-N-fatty alcohol polyethenoxy ether-base carboxymethyl lycine, belonging to the technical field of fine chemical engineering. The commercially available non-anionic surfactant fatty alcohol polyethenoxy ether sodium sulfate is subjected to tertiary-amination and a quaternized intermittent two-step process to obtain the N,N-dimethyl-N-fatty alcohol polyethenoxy ether-base carboxymethyl lycine. The preparation technique of the N,N-dimethyl-N-fatty alcohol polyethenoxy ether-base carboxymethyl lycine has the advantages of simple steps and no environmental three wastes; and the prepared N,N-dimethyl-N-fatty alcohol polyethenoxy ether-base carboxymethyl lycine has obvious hard water resistance, and can be completely dissolved in a saturated saline solution while still performing excellent surfactant properties.

Description

Technical field [0001] The invention relates to the preparation of a novel amphoteric surfactant N,N-dimethyl-N-fatty alcohol polyoxyethylene ether carboxymethyl betaine with polyoxyethylene ether group fragments in the hydrophobic main chain The method belongs to the technical field of fine chemicals. Background technique [0002] Based on the application experience of non-anionic mixed surfactant fatty alcohol polyoxyethylene ether (3) sodium sulfate (AES) and fatty alcohol polyoxyethylene ether carboxylate (AEC), it is not difficult to predict the traditional ionic surface The molecular structure of the active agent is grafted with non-ionic polyoxyethylene ether (EO n ) Segment, which will greatly improve the various application properties of the original surfactant varieties to meet the urgent needs of high-concentration inorganic salt, inorganic acid and inorganic alkali-resistant surfactants in textile dyeing and finishing, tertiary oil recovery and other industrial fields...

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 Applications(China)
IPC IPC(8): C07C229/12C07C227/08B01F17/46C09K23/46
Inventor 刘雪锋夏琪波陈晖
Owner JIANGNAN UNIV
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