Supercharge Your Innovation With Domain-Expert AI Agents!

Preparation method of alkyl imidazoline organosilicon quaternary ammonium salt

A technology of organosilicon quaternary ammonium salt and alkyl imidazoline, which is applied in the field of organic synthesis, can solve the problems of non-compliance with green development, ecological development, difficult biodegradation, high price, etc., and achieve good high and low temperature resistance, improve bulkiness, The effect of reducing static electricity

Active Publication Date: 2018-12-07
广东顺德源本生活科技有限公司
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that it is not resistant to high temperature, and imidazoline is easily hydrolyzed. Quaternizing imidazoline to obtain imidazoline quaternary ammonium salt can improve the stability of imidazoline, and can improve the water solubility of imidazoline
But the organosilicon quaternary ammonium salt widely used at present is mainly (trimethoxysilyl propyl) octadecyl dimethyl ammonium chloride (DC-SQ-5700) developed by U.S. Dow Corning Company in 1967, although this product Superior performance, but expensive and difficult to biodegrade, does not conform to the current direction of green development and ecological development vigorously advocated by the state

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 alkyl imidazoline organosilicon quaternary ammonium salt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of alkyl imidazoline organosilicon quaternary ammonium salt, the method steps are as follows:

[0027] S1: amidation reaction: weigh long-chain alkyl fatty acid, diethylenetriamine and xylene, heat and react for 6h, pass nitrogen, and the reaction temperature is 155°C; the molar ratio of long-chain alkyl fatty acid to diethylenetriamine is 1 : 1.1, the addition amount of xylene is 70% of the total mass of long-chain alkyl fatty acid and diethylenetriamine, and the long-chain alkyl fatty acid is lauric acid.

[0028] S2: cyclization reaction: continue the reaction at 220°C for 4h, finish the reaction, cool to 120°C, evaporate the residual xylene to obtain a pale yellow liquid, recrystallize three times with acetone to obtain a white solid, and dry to obtain a white powder, obtain Alkyl imidazoline, the yield of long-chain alkyl imidazoline is 86.7%;

[0029] S3: quaternization reaction: add the alkyl imidazoline, halogenated organosilane and catalys...

Embodiment 2

[0032] A preparation method of alkyl imidazoline organosilicon quaternary ammonium salt, the method steps are as follows:

[0033] S1: Amidation reaction: weigh long-chain alkyl fatty acid, diethylenetriamine and xylene, heat and react for 7h, pass nitrogen, and the reaction temperature is 160°C; the molar ratio of long-chain alkyl fatty acid to diethylenetriamine is 1 : 1.2, the addition amount of xylene is 75% of the total mass of long-chain alkyl fatty acid and diethylenetriamine, and the long-chain alkyl fatty acid is myristic acid.

[0034] S2: cyclization reaction: the temperature was increased to 230°C and the reaction was continued for 5h, the reaction was completed, cooled to 120°C, and the residual xylene was evaporated to obtain a pale yellow liquid, which was recrystallized with acetone for 3 times to obtain a white solid, and dried to obtain a white powder, obtained Alkyl imidazoline, the yield of long-chain alkyl imidazoline is 85.3%;

[0035] S3: quaternization...

Embodiment 3

[0038] A preparation method of alkyl imidazoline organosilicon quaternary ammonium salt, the method steps are as follows:

[0039] S1: Amidation reaction: weigh long-chain alkyl fatty acid, diethylenetriamine and xylene, heat and react for 7.5h, pass nitrogen, and the reaction temperature is 165°C; the molar ratio of long-chain alkyl fatty acid to diethylenetriamine is 1:1.15, the addition amount of xylene is 80% of the total mass of long-chain alkyl fatty acid and diethylenetriamine, and the long-chain alkyl fatty acid is palmitic acid.

[0040]S2: cyclization reaction: heat up to 235°C and continue the reaction for 6h, finish the reaction, cool to 120°C, evaporate the residual xylene to obtain a pale yellow liquid, recrystallize with acetone for 3 times to obtain a white solid, and dry to obtain a white powder, obtain Alkyl imidazoline, the yield of long-chain alkyl imidazoline is 87.2%;

[0041] S3: Quaternization reaction: add the alkyl imidazoline, halogenated organosila...

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 alkyl imidazoline organosilicon quaternary ammonium salt. The preparation method comprises the following steps: (S1) amidation reaction: weighing long-chain alkyl fatty acid, diethylenetriamine and xylene, and heating for reaction for 6-8 hours; (S2) cyclization reaction: heating to continue reaction for 4-6 hours, after the reaction is finished, cooling to 120 DEG C, evaporating residual xylene so as to obtain faint yellow liquid, carrying out recrystallization by using acetone for three times so as to obtain white solids, and drying to obtain white powder, namely alkyl imidazoline; and (S3) quaterisation reaction: adding alkyl imidazoline prepared in the step (S2), halogenated organosilane and a catalyst into a solvent, carrying out microwave heating reaction for 60-70 minutes, after the reaction is finished, carrying out reduced pressure distillation to remove the solvent, and drying so as to obtain solid powder. Alkyl imidazoline organosilicon quaternary ammonium salt prepared by virtue of the preparation method has a high yield of 62.4%-68.5%. The product is applied to a feather (down feather) antibacterial fluffy finishing agent, so that various microorganisms can be effectively inhibited, the fluffy degree of the feather (down feather) can be increased, and the static electricity of the feather (down feather) can be reduced.

Description

technical field [0001] The invention relates to the technical field of organic synthesis, in particular to a preparation method of an alkyl imidazoline organosilicon quaternary ammonium salt. Background technique [0002] Imidazoline surfactants are a class of surfactants with excellent properties. They are mild in nature and have good decontamination, hard water resistance, foaming and emulsifying properties, especially with extremely low toxicity and minimal irritation to skin and eyes. , good foaming, excellent emulsifying performance and good biodegradability, has a very broad application prospect in daily chemical, textile, printing and dyeing, medical and health, petroleum mining and other fields, low toxicity, hard water resistance, foaming, emulsification Good performance. The disadvantage is that it is not resistant to high temperature, and the imidazoline is easily hydrolyzed. The imidazoline is quaternized to obtain an imidazoline quaternary ammonium salt, which ...

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): C07F7/18B01F17/18B01F17/54C11D1/62C11D3/48A01N55/10A01P1/00A01P3/00C09K3/16D06M13/513D06M19/00C09K23/18C09K23/54
CPCA01N55/00C09K3/16C11D1/62C11D3/001C11D3/48D06M13/513D06M16/00D06M19/00C07F7/1892D06M2200/50C09K23/00
Inventor 徐光年朱继广阮果连慈旭佳
Owner 广东顺德源本生活科技有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com