Organosilicone gemini quaternary ammonium salt and synthetic method thereof

A technology of a gemini quaternary ammonium salt and a synthesis method, which is applied in the field of fine chemicals and can solve the problems of complex synthesis method steps and high cost

Inactive Publication Date: 2009-10-21
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are fewer research reports on silicon-containing gemini surfactants, and the existing synthetic methods have complicated steps and higher costs

Method used

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  • Organosilicone gemini quaternary ammonium salt and synthetic method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 18g (CH 3 O) 2 CH 3 Si(CH 2 ) 3 Cl and 10g of ethanol were added into a four-neck flask equipped with a dropping funnel, a thermometer, a reflux condenser and a nitrogen protection device, stirred and heated to reflux, slowly added dropwise 5g of tetramethylethylenediamine, and reacted at 80°C for 8 hours to obtain ( CH 3 O) 2 CH 3 Si(CH 2 ) 3 N + (CH 2 ) 2 N + (CH 2 ) 3 Si CH 3 (CH 3 O) 2 2Cl - ethanol solution, the ethanol was distilled off, washed several times with anhydrous ether and then vacuum-dried to obtain a yellow transparent product with a yield of 40%.

[0048] The attached picture shows the compound 1 H-NMR spectrum, the corresponding chemical shifts are: 0.042ppm for -Si-C H 3 , 1.1ppm is the methylene peak connected to silicon-Si-CH 3 -CH 2 -CH 2 -, 2.18ppm for -N + -C H 2 -CH 2 -CH 2 -Si-, 2.7ppm for -N + -C H 2 -C H 2 -N + -, 3.6ppm for Si-O-C H 3 , 3.25ppm for C H 3 -N + -, 1.5ppm for -N + -CH 2 ...

Embodiment 2

[0050] 15.8g (CH 3 O) 2 CH 3 Si(CH 2 ) 3 Cl and 10g of methanol were added into a four-neck flask equipped with a dropping funnel, a thermometer, a reflux condenser and a nitrogen protection device, stirred and heated to reflux, slowly added dropwise 8g of tetramethylhexamethylenediamine, and reacted at 70°C for 12 hours to obtain ( CH 3 O) 2 CH 3 Si(CH 2 ) 3 N + (CH 2 ) 6 N + (CH 2 ) 3 Si CH 3 (CH 3 O) 2 2Cl - Methanol solution, conversion rate 21.6%.

Embodiment 3

[0052] Add 33g (C 2 h 5 O) 2 CH 3 Si(CH 2 ) 3 Cl and 10g of anhydrous methanol are heated to reflux under electromagnetic stirring, and 10g of tetramethylethylenediamine is slowly added dropwise, and the reaction is obtained in 14 hours (C 2 h 5 O) 2 CH 3 Si(CH 2 ) 3 N + (CH 2 ) 2 N + (CH 2 ) 3 Si CH 3 (C 2 h 5 O) 2 2Cl - Methanol solution, the conversion rate is 24%.

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Abstract

The invention relates to organosilicone gemini quaternary ammonium salt and a synthetic method thereof. The synthetic method is as below: mixing and heating (RO)2CH3Si(CH2)3Cl and solvent, dropping (CH3)2NR1N(CH3)2, controlling the reaction conditions, and then obtaining the organosilicone gemini quaternary ammonium salt. The organosilicone gemini quaternary ammonium salt has the advantages of easily obtained raw materials and simple and easily controlled reaction conditions. The obtained compound has high surfaceactivity, therefore, the compound can serve as the cationic surfactant of the organosilicone; in addition, the compound can be used as a disinfectant and an antibacterial. Addition of the organosilicone improves the flexibility and safety of products, and the organosilicone gemini quaternary ammonium salt can serve as a soft antibacterial of textile fabrics and is an antibacterial product doing no harm to human bodies.

Description

Technical field: [0001] The present invention relates to the synthesis of a class of novel surfactants with excellent performance, especially the synthesis of organosilicon gemini quaternary ammonium salt surfactants, which can be used to prepare daily chemicals, fabric finishing agents, etc., and belong to the field of fine chemicals . Background technique: [0002] Gemini surfactants contain two hydrophilic head groups and two hydrophobic chains connected by linking groups through chemical bonds. This kind of compound shows excellent surface activity, such as very small critical micelle concentration (cmc), very low minimum surface tension value and so on. A series of studies have shown that Gemini surfactants have much higher surface activity than traditional surfactants composed of a single alkane chain and a single ionic head group. [0003] The earliest reported gemini surfactant is a series of detergent builders synthesized by Frederick C.B. in the US patent US25242...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/18
Inventor 李俊英李天铎郭宏韩永德袁小娇王俊楠
Owner QILU UNIV OF TECH
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