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Organosilicone dimeric surfactant and synthetic method thereof

A technology of surfactants and gemini surfaces, applied in the field of silicone gemini surfactants and their synthesis, can solve the problems of easy hydrolysis and poor oil solubility of trisiloxane gemini surfactants, etc., and achieve easy separation and simple post-treatment , the effect of mild reaction conditions

Inactive Publication Date: 2016-08-24
HEILONGJIANG HEIKE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problems of poor oil solubility and easy hydrolysis of existing trisiloxane gemini surfactants, and provides a kind of organosilicon gemini surfactant and its synthesis method

Method used

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  • Organosilicone dimeric surfactant and synthetic method thereof
  • Organosilicone dimeric surfactant and synthetic method thereof
  • Organosilicone dimeric surfactant and synthetic method thereof

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specific Embodiment approach 1

[0016] Specific embodiment one: the structural formula of the organosilicon gemini surfactant of the present embodiment is as follows:

[0017] where n=1, 2 or 3.

specific Embodiment approach 2

[0018] Specific embodiment two: the preparation method of the organosilicon gemini surfactant described in specific embodiment one is as follows:

[0019] 1. According to the molar ratio of aminoethylaminopropyltrimethoxysilane and hexamethyldisiloxane as 1:(10~20), mix aminoethylaminopropyltrimethoxysilane and hexamethyldisiloxane Add oxane into the reactor, then add tetramethylammonium hydroxide as a catalyst in the reactor, the amount of catalyst added is 0.1-0.5% of the amount of aminoethylaminopropyltrimethoxysilane, and nitrogen gas Protection, heating in an oil bath to 80-90°C, reflux reaction for 4-5 hours, recovering unreacted hexamethyldisiloxane, and then distilling under reduced pressure to obtain aminoethylaminopropyltetrasiloxane;

[0020] Two, take the aminoethylaminopropyltetrasiloxane obtained in step 1 and react with benzaldehyde, wherein the molar ratio of aminoethylaminopropyltetrasiloxane to benzaldehyde is 1:(1~1.3), and the ammonia Add ethylaminopropyl ...

specific Embodiment approach 3

[0023] Specific embodiment three: the difference between this embodiment and specific embodiment two is that the specific steps for preparing diol diglycidyl ether in step three are as follows: take by weighing epichlorohydrin, sodium hydroxide, tetrabutylammonium bromide And containing α, ω-dihydric alcohols, wherein the mass ratio of epichlorohydrin to sodium hydroxide is 1: (1 ~ 1.1), and the amount of tetrabutylammonium bromide is that of epichlorohydrin 0.5-1.5%, containing α, ω-dihydric alcohols and the molar ratio of epichlorohydrin is 1: (2-4), first add epichlorohydrin, sodium hydroxide and tetrabutylammonium bromide into the reactor, then put the reactor in ice water at 0°C, dropwise add substances containing α, ω-dihydric alcohols under stirring conditions, after the dropwise addition, heat up to 40-45°C, and react 1-4 hours, then filter, wash the liquid phase with saturated ammonium chloride aqueous solution to neutrality, after layering, dry the organic layer liqu...

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Abstract

The invention relates to organosilicone dimeric surfactant and a synthetic method thereof to solve the problems that trisiloxane dimeric surfactant is poor in oil solubility and is prone to hydrolysis. The structural formula of the organosilicone dimeric surfactant is shown in the description, wherein n is 1, 2 or 3. The synthetic method comprises the steps that hexamethyldisiloxane and [3-(2-Aminoethyl)aminopropyl]trimethoxysilane react to prepare aminoethyl aminopropyl tetrasiloxane, the aminoethyl aminopropyl tetrasiloxane reacts with benzaldehyde to obtain 2-benzyl ene ethyl-3-four silicon methoxyl propyl amine, diol diglycidyl ether is prepared from epoxy chloropropane and alpha,omega-dihydroxy alcohols, and 2-benzyl ene ethyl-3-four silicon methoxyl propyl amine and the corresponding glyceryl ether react so that the organosilicone dimeric surfactant can be obtained. The interfacial tension of the surfactant in a water phase is 22.9-23.5 Mn / m, the CAC value of the surfactant is 8.56*10 [5]-3.28*10 [4], and hydrolysis does not occur within 6 months. The surfactant can be used in the fields of industry and agriculture.

Description

technical field [0001] The invention relates to a silicone gemini surfactant and a synthesis method thereof. Background technique [0002] Silicone gemini surfactant is a new type of surfactant developed along with new silicone materials, and is widely used in various fields of industry and agriculture. This type of surfactant has hydrophobic groups (Si-O-Si, Si- C-Si or Si-Si) is more hydrophobic than traditional carbon chains and has excellent ability to reduce surface tension. It is widely used in textiles, cosmetics, plastics, coatings, agricultural chemicals, medicine, automobiles and mechanical processing, etc. industry. There are many methods for synthesizing organosilicon gemini surfactants, such as Huang Liangxian et al. in 2015 ("Preparation and Performance of Nonionic Trisiloxane Gemini Surfactants", Printing and Dyeing Auxiliaries, 2015, 32 (10) , 21-25.) discloses a nonionic trisiloxane gemini surfactant (NTSGS) and its preparation method, the method is 1,1,1,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/54C07F7/10C09K23/54
CPCC07F7/10C09K23/00
Inventor 付东谢洋杨帆张晓臣李鹏隋新黄波任伟东
Owner HEILONGJIANG HEIKE TECH CO LTD
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