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Preparing method for organic silicon compound containing quaternary ammonium group

A technology of organosilicon compounds and quaternary ammonium groups, which is applied in the fields of organic chemistry, compounds of Group 4/14 elements of the periodic table, chemical instruments and methods, etc., can solve the problems of many reaction steps, troublesome processing and high price.

Inactive Publication Date: 2007-08-15
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In the existing preparation method, one is to use expensive platinum catalyst or other catalysts in the reaction, and the other is that there are many reaction steps, and the post-treatment is troublesome.

Method used

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  • Preparing method for organic silicon compound containing quaternary ammonium group

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Embodiment 1

[0047] 90g (CH 3 O) 2 CH 3 Si(CH 2 ) 3 Add Cl and 200g of diethylamine into a dry reaction kettle, heat to 105°C under stirring, and the pressure is 0.3-0.4Mpa. After 10 hours of reaction, stir and cool down to room temperature, and filter the feed liquid. The filtrate is distilled at atmospheric pressure first, and then decompressed Distillation (71 ~ 72 ℃ / 4mmHg) to obtain 50g intermediate product (CH 3 O) 2 CH 3 Si(CH 2 ) 3 N(C 2 h 5 ) 2 .

Embodiment 2

[0049] 45ml (CH 3 O) 2 CH 3 Si(CH 2 ) 3 Cl and 150ml of diethylamine were added to a four-neck flask equipped with stirring, thermometer, reflux condenser and nitrogen protection device, stirred and heated to 60°C under normal pressure, stirred and cooled to room temperature after 20 hours of reaction, the feed liquid was filtered, and the filtrate was first Atmospheric distillation, and then vacuum distillation (101 ~ 109 ° C / 30mmHg) to obtain 12g intermediate product (CH 3 O) 2 CH 3 Si(CH 2 ) 3 N(C 2 h 5 ) 2 .

Embodiment 3

[0051] In the four-neck flask equipped with thermometer, reflux condenser, dropping funnel and nitrogen protection device, add 10.95g (CH 3 O) 2 CH 3 Si(CH 2 ) 3 N(C 2 h 5 ) 2 and 30g of anhydrous methanol, heated up to 55°C under electromagnetic stirring, slowly added dropwise 5.6g of epichlorohydrin, and reacted for 4 hours to obtain the organosilicon compound containing quaternary ammonium groups (CH 3 O) 2 CH 3 Si(CH 2 ) 3 N + (C 2 h 5 ) 2 CH 2 CHOCH 2 Cl - methanol solution, methanol was distilled off, washed several times with anhydrous ether and then vacuum-dried to obtain a light yellow transparent quaternary ammonium salt product. The chloride ion content was 90.12% and the epoxy value was 70.99% as measured by silver nitrate titration.

[0052] Accompanying drawing 1 is this compound 1 H-NMR spectrum, the corresponding chemical shifts are: 0.419ppm for -Si-C H 3 peak, the triplet at 0.974ppm is -Si-C H 2 -C peak, 1.648ppm for -C-C H 2 -C-peak,...

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Abstract

The invention discloses a making method of organic silicon compound with little-surface tension quaternary ammonium group, which is characterized by the following: reacting (RO)2CH3Si(CH2)3X and secondary amine to produce organic silicon compound with tertiary amino; reacting with halogenated alkyl to do quaternised reaction; making the organic silicon compound with structure as (RO)2CH3Si(CH2)3N+R1R2R3X-; fitting for surface activator of organic silicon cation, sterilizer and antibacterial agent; lengthening sterilizing time.

Description

Technical field: [0001] The invention relates to a preparation method of a chemical having bactericidal and antibacterial properties, in particular to a preparation method of an organosilicon compound containing a quaternary ammonium group, belonging to the field of fine chemicals Background technique: [0002] There are many types of bactericidal and antibacterial agents currently used, and the widely used cationic surfactants are mostly alkyl quaternary ammonium salts, but their chemical activity is low, the binding force with the application object is weak, and they are easy to be lost. And its toxicity is relatively large, subject to certain restrictions. Due to its special structure, organosilicon cationic surfactants can be combined with objects through chemical bonds in application, and have persistence, and the toxicity of organosilicon is greatly reduced due to the physiological inertness of organosilicon. [0003] In 1967, Dowcorning Corporation of the United Stat...

Claims

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Application Information

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IPC IPC(8): C07F7/18
Inventor 李俊英宋增峰李天铎杨鹏飞张萌
Owner QILU UNIV OF TECH
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