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Preparation method of low-yellowing negative ion-modified organic silicon emulsion

A technology of anion modification and silicone emulsion, which is applied in the field of silicone emulsion, and can solve problems such as oil floating, yellowing of light-colored fabrics, and insufficient hand feeling.

Inactive Publication Date: 2012-10-31
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, the light-colored fabric is prone to yellowing, oil floating and many other unstable situations during use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] 1) 1.5g N, N-dimethylaminopropylaminopropylmethyldimethoxysilane, 0.6g γ-aminopropyltriethoxysilane and 108g octamethylcyclotetrasiloxane in proportion Mix well to make a mixture;

[0014] 2) Put 456g of deionized water, 21g of sulfonic acid, 2.1g of polyethylene glycol PEG400, and 4.8g of fatty alcohol polyoxyethylene ether into the reactor according to the proportion, stir, heat up to 64°C, and keep warm for 1.5 hours;

[0015] 3) Add the mixture prepared in step 1) dropwise to the system in step 2), and control the dropwise addition within 120 minutes, then slowly raise the temperature to 82°C and keep it warm for 5.3 hours; then cool down, neutralize, filter, and discharge, A low-yellowing anion-modified silicone emulsion is obtained.

Embodiment 2

[0017] 1) Mix 1.8g N,N-dimethylaminopropylaminopropylmethyldimethoxysilane, 0.6g γ-aminopropyltriethoxysilane, and 102g octamethylcyclotetrasiloxane according to the formula Than mixing evenly to make a mixture;

[0018] 2) Put 468g of deionized water, 21.6g of sulfonic acid, 3g of polyethylene glycol PEG400, and 3g of fatty alcohol polyoxyethylene ether into the reaction kettle according to the proportion, stir, heat up to 64°C, and keep warm for 1.5 hours;

[0019] 3) Add the mixture prepared in step 1) dropwise to the system in step 2), and control the dropwise addition within 120 minutes, then slowly raise the temperature to 80°C and keep it warm for 5.9 hours; then cool down, neutralize, filter, and discharge, A low-yellowing anion-modified silicone emulsion is obtained.

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PUM

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Abstract

The invention relates to a preparation method of a low-yellowing negative ion-modified organic silicon emulsion. The emulsion is mainly used for enhancing the flexibility and the wearability of a light color fabric and almost has no influence on the chromatic light of the fabric simultaneously. The method comprises the following steps of: compounding a negative ion emulsifier, polyethylene glycolPEG400 and nonionic emulsifier fatty alcohol polyoxyethylene ether; and performing emulsion polymerization on N,N-dimethyl aminopropyl aminopropyl methyl dimethoxy silane, gamma-aminopropyl triethoxysilane and an organic silicon monomer by taking sulfoacid as a catalyst to obtain a modified emulsion. The modified emulsion prepared by the invention has the solid content between 21 percent and 25 percent, and is a blue-light semitransparent emulsion. The emulsion has excellent flexibility and wearability on a light-colored fabric and almost has no influence on the chromatic light of the fabricsimultaneously.

Description

technical field [0001] The invention relates to a silicone emulsion, in particular to a method for preparing a low-yellowing anion-modified silicone microemulsion. The emulsion has excellent softness and wearability on light-colored fabrics, and has almost no effect on the shade of the fabric. 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 many other unstable situations during use. Contents of the invention [0003] The technical problem to b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/26C08G77/06D06M15/643
Inventor 刘瑞云
Owner 张家港科道化学有限公司