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Preparation method of negative ion hydrophilic organic silicon emulsion

A silicone emulsion, hydrophilic technology, applied in the direction of plant fibers, etc., can solve problems such as insufficient hand feeling, oil floating, yellowing of light-colored fabrics, etc.

Inactive Publication Date: 2011-06-15
张家港科道化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the fabric is treated with the emulsion prepared by this method, the hand feeling is insufficient, and at the same time, it is easy to cause yellowing of light-colored fabrics during use, oil floating and other unstable situations.

Method used

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  • Preparation method of negative ion hydrophilic organic silicon emulsion
  • Preparation method of negative ion hydrophilic organic silicon emulsion
  • Preparation method of negative ion hydrophilic organic silicon emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) With 3.2g aminosilane coupling agent modified by epoxy polyether, the structure is as follows:

[0018]

[0019] Mix evenly with 144g octamethylcyclotetrasiloxane in proportion to make mixture;

[0020] 2) Put 616g of deionized water, 24g of sulfonic acid, 8g of polyethylene glycol PEG400, and 4.8g of fatty alcohol polyoxyethylene ether into the reaction kettle according to the proportion, stir, heat up to 63°C, and keep warm for 1.5 hours;

[0021] 3) Add the mixture prepared in step 1) dropwise to the system in step 2), and control the dropwise addition within 110 minutes, then slowly raise the temperature to 81°C and keep it warm for 5.5 hours; then cool down, neutralize, filter, and discharge, An anionic hydrophilic silicone emulsion is obtained.

Embodiment 2

[0023] 1) With 2.4g aminosilane coupling agent modified by epoxy polyether, the structure is as follows:

[0024]

[0025] Mix evenly with 136g octamethylcyclotetrasiloxane in proportion to make mixture;

[0026] 2) Put 624g of deionized water, 27.2g of sulfonic acid, 5.6g of polyethylene glycol PEG400, and 4.8g of fatty alcohol polyoxyethylene ether into the reaction kettle according to the proportion, stir, heat up to 63°C, and keep warm for 1.5 hours;

[0027] 3) Add the mixture prepared in step 1) dropwise to the system in step 2), and control the dropwise addition within 115 minutes, then slowly raise the temperature to 80°C and keep it warm for 6 hours; then cool down, neutralize, filter, and discharge , to obtain anionic hydrophilic silicone emulsion.

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Abstract

The invention relates to a preparation method of an negative ion hydrophilic organic silicon emulsion. The emulsion is mainly used for enhancing the flexibility and shrinkage-proof function of a fabric and also has a hydrophilicity function. The method comprises the following steps of: compounding a negative ion emulsifier, polyethylene glycol PEG400 and nonionic emulsifier fatty alcohol polyoxyethylene ether; and performing emulsion polymerization on an epoxy polyether-modified aminosilane coupling agent with a structure shown in the specifications and an organic silicon monomer by taking sulfoacid as a catalyst to obtain the hydrophilic modification emulsion. The organic silicon emulsion prepared by using the method has the solid content between 20 percent and 24 percent, and is a blue-light semitransparent emulsion. The emulsion has an excellent flexibility and shrinkproofing function on a pure cotton fabric, and has a hydrophilicity function.

Description

technical field [0001] The invention relates to a silicone emulsion, in particular to a method for preparing an anionic hydrophilic silicone microemulsion. It is mainly used to improve the softness, anti-shrinkage and hydrophilicity of pure cotton fabrics. Background technique [0002] Silicone emulsion plays an important role in improving the fabric's handle and anti-shrinkage performance in the textile industry. At present, most of the modified silicone emulsions used as softeners are prepared by a two-step method: first, amino-modified silicone oil is synthesized by bulk polymerization, and then micro-emulsified with a suitable emulsifier. After the fabric is treated with the emulsion prepared by this method, the hand feeling is insufficient, and at the same time, the light-colored fabric is prone to yellowing, oil floating and other unstable situations during use. Contents of the invention [0003] The technical problem to be solved by the present invention is to pro...

Claims

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Application Information

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IPC IPC(8): C08G77/46C08G77/26C08G77/06D06M15/647D06M101/06
Inventor 刘瑞云
Owner 张家港科道化学有限公司