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Method for preparing organosilicone monomer emulsion

A monomer emulsion and silicone technology, applied in the field of preparation of silicone monomer emulsion, can solve the problems of coagulation, easy oil bleed, poor stability, etc., and achieve the effects of less dosage, strong emulsifying ability and high stability

Inactive Publication Date: 2014-02-05
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has disadvantages such as easy oil floating or coagulation, and poor stability. For a long time, people mainly focus on pretreatment of organosilicon monomers to solve the oil floating problem.

Method used

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  • Method for preparing organosilicone monomer emulsion
  • Method for preparing organosilicone monomer emulsion
  • Method for preparing organosilicone monomer emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add emulsifier (0.2 g sodium dodecylbenzene sulfonate and 0.2 g fatty alcohol polyoxyethylene ether), co-emulsifier (0.1 g glycerol) and 0.1 g water into a 500 mL three-neck flask and stir slowly to mix well , form a uniform emulsion, and then continue to stir and add 40 grams of octamethylcyclotetrasiloxane. The speed of adding octamethylcyclotetrasiloxane is based on the fact that no free silicone oil is produced. After forming a translucent gel, add 40 grams of octamethylcyclotetrasiloxane. gram of water, and continued to stir for 0.5 hour to obtain an octamethylcyclotetrasiloxane monomer emulsion.

Embodiment 2

[0026] Add emulsifier (0.5 g sodium dodecylbenzene sulfonate and 0.5 g fatty alcohol polyoxyethylene ether), co-emulsifier (0.1 g glycerol) and 0.1 g water into a 500 mL three-neck flask and stir slowly to mix well , form a uniform emulsion, and then continue to stir and add 40 grams of hexamethyldisiloxane. The speed of adding hexamethyldisiloxane is based on the fact that no free silicone oil is produced. After forming a translucent gel, add 40 grams of hexamethyldisiloxane water, and continue stirring for 0.5 hour to obtain a hexamethyldisiloxane monomer emulsion.

Embodiment 3

[0028] Add emulsifier (0.9 g sodium dodecylbenzene sulfonate and 0.9 g fatty alcohol polyoxyethylene ether), co-emulsifier (0.3 g glycerol) and 0.3 g water into a 500 mL three-neck flask and stir slowly to mix well , form a uniform emulsion, then continue to stir and add 40 grams of dimethylcyclosiloxane. The speed of adding dimethylcyclosiloxane is based on the fact that no free silicone oil is produced. After forming a translucent gel, add 40 grams of dimethylcyclosiloxane water, and continue stirring for 0.5 hour to obtain a dimethylcyclosiloxane monomer emulsion.

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Abstract

The invention discloses a method for preparing organosilicone monomer emulsion. The method comprises the following steps: slowly stirring and uniformly mixing an emulsifier which is 0.5-15 percent of mass of organosilicone monomer, a co-emulsifier which is 0-50 percent of mass of the emulsifier and water which is 0-100 percent of mass of the emulsifier to form uniform emulsion; adding the organosilicone monomer while continuously stirring, wherein the addition speed of the organosilicone monomer has to meet the condition that free silicone oil is not generated; adding water which is 50-200 percent of mass of the organosilicone monomer after translucent gel is formed; continuously stirring for 0.5 hour, thus obtaining the organosilicone monomer emulsion. According to the method, high-speed stirring is not needed, the energy is saved, and the used organosilicone monomer is widely and readily available. The prepared organosilicone emulsion has high stability, a floating oil phenomenon can be avoided at room temperature within 7-20 days, the use amount of the emulsifier is small, and the emulsifying temperature and a hydrophilic-lipophilic balance value do not need to be controlled.

Description

Technical field [0001] The present invention involves a preparation method for organic silicon monolithic emulsion.This method is designed to prepare the stable emulsion of the silicon monomer of the emulsion particles uniformly, thereby providing a high -quality pre -emulsification process for the monomer to prepare high -quality polysiloxane emulsion by convergence. Background technique [0002] Polyxane has many excellent performance, such as high and low temperature, high hydrophobicity, good breathability, etc. Polyxane emulsion is widely used in leather, coatings, fabric finishing, medicine, cosmetics and other fields.There are two main methods for preparing organic silicon emulsion.The first is the mechanical emulsification method. This method is made of mechanical emulsification by dioma silicon oil.This method usually can only prepare silicon oil emulsion with small molecular weight; large molecular amount of silicon oil is too viscosity, emulsification and stability, so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/03C08L83/04
Inventor 邓卫星孙鹏飞李金红彭锦雯
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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