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Preparation method of hydrophilic block polyether aminosilicone

A hydrophilic block, polyether amino technology, applied in textiles, papermaking, fiber processing, etc., can solve the problems of reducing fabric hygroscopicity and wearing comfort, poor softness and hygroscopicity, poor compatibility, etc. Simple and easy conditions, enhanced washability, mild reaction conditions

Inactive Publication Date: 2012-08-01
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The good application performance of amino silicone oil stems from its ability to form a smooth low-energy silicone film on the surface of the fiber with the silicon methyl group facing outward, the Si-O dipole bond and the cationic amino group pointing to the fiber interface, but this arrangement makes the fiber appear It has a certain hydrophobicity, which reduces the hygroscopicity and wearing comfort of the fabric, and is generally easy to break and yellow. It is sensitive to high pH, ​​high electrolyte, high temperature, and high shear force, and has poor compatibility. , it is very easy to produce defects such as "oil spots", "sticky cylinders" and "sticky rollers" during operation
[0003] Early hydrophilic silicone oils, such as epoxy-polyether modified silicone oils and amino silicone oils containing polyether chain links in the side chain, can endow fabrics with certain softness, hygroscopicity, antistatic properties and easy decontamination, etc.; But softness and hygroscopicity are poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Mix 1g hydrogen-containing double head, 65g octamethylcyclotetrasiloxane (D4) and 1g concentrated sulfuric acid evenly, then react at room temperature for 8h, then add anhydrous sodium carbonate three times, stir for 1h each time, Check that the pH is 6-7, remove solids by filtration, vacuumize, pump out low-boiling point substances for 1 hour, and cool down to obtain terminal hydrogen-containing silicone oil;

[0028] 2. Mix 80g terminal hydrogen-containing silicone oil and 6g allyl glycidyl ether evenly, stir and raise the temperature to 80°C, add 3g chloroplatinic acid, keep the temperature for 3.5h, drop to 75°C, add 10g polyetheramine, 4g chloroplatinic acid As a catalyst and 72g of ethanol, rise to reflux temperature and react for 4h until the solution becomes transparent and clear, drop to room temperature and add glacial acetic acid to adjust the pH to 6-7, finally add 16g of fatty alcohol polyoxyethylene ether TO-5, and stir at room temperature for 0.5h , to...

Embodiment 2

[0030] 1. Mix 1g of hydrogen-containing double head, 45g of decamethylcyclopentasiloxane and 2g of concentrated sulfuric acid evenly, then react at room temperature for 6h, then add anhydrous sodium carbonate three times, stir for 1h each time, and detect the pH as 6-7, filter to remove solids, vacuumize, pump out low-boiling point substances for 1 hour, cool down, and obtain terminal hydrogen-containing silicone oil;

[0031] 2. Mix 80g terminal hydrogen-containing silicone oil and 6g allyl polyoxyethylene glycidyl ether evenly, stir to raise the temperature to 80°C, add 4g of chloroplatinic acid, keep the temperature for 5 hours, drop to 70°C, add 8g of polyetheramine, 4g of chlorine Platinic acid as a catalyst and 84g ether, rise to reflux temperature and react for 6h until the solution becomes transparent and clear, then drop to room temperature and add glacial acetic acid to adjust the pH to 6-7, finally add 16g fatty alcohol polyoxyethylene ether AEO-7, stir at room tempe...

Embodiment 3

[0033] 1. Mix 1g hydrogen-containing double head, 90g octamethylcyclotetrasiloxane (D4) and 1g concentrated sulfuric acid evenly, then react at room temperature for 6h, then add anhydrous sodium carbonate three times, stir for 1h each time, Check that the pH is 6-7, remove solids by filtration, vacuumize, pump out low-boiling point substances for 1 hour, and cool down to obtain terminal hydrogen-containing silicone oil;

[0034] 2. Mix 100g terminal hydrogen-containing silicone oil and 8g allyl polyoxyethylene polyoxypropylene glycidyl ether evenly, stir and heat up to 80°C, add 5g chloroplatinic acid, keep warm for 4 hours, drop to 75°C, add 10g polyetheramine , 4g of chloroplatinic acid as a catalyst and 96g of isopropanol, rise to reflux temperature and react for 6h until the solution becomes transparent and clear, drop to room temperature and add glacial acetic acid to adjust the pH to 6-7, and finally add 20g of fatty alcohol polyoxyethylene ether TO -7, Stir at room temp...

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Abstract

The invention discloses a preparation method of hydrophilic block polyether aminosilicone. The method comprises the following steps of: preparing terminal hydrogen-containing silicone oil: mixing hydrogen-containing double end enclosures, polysiloxane and acid, reacting, adding sodium carbonate under a vacuumizing condition, adjusting the pH, filtering a solid out, and extracting a low-boiling-point substance under reduced pressure to obtain low hydrogen-containing silicone oil; preparing epoxy silicone oil: mixing the obtained terminal hydrogen-containing silicone oil with allyl epoxy polyether and a catalyst, and reacting to obtain epoxy silicone oil; and preparing block polyether aminosilicone: and mixing the obtained epoxy silicone oil, polyetheramine, a catalyst and a solvent, reacting, cooling, adding an emulsifier for emulsifying, and adding glacial acetic acid for adjusting the pH to obtain the block polyether aminosilicone. According to the hydrophilic block polyether aminosilicone prepared with the method, the handfeel of a treated fabric can reach the handfeel of ordinary aminosilicone, and the treated fabric can keep a hydrophilic function permanently, is prevented from yellowing, and has high antistatic property.

Description

technical field [0001] The invention relates to a preparation method of hydrophilic block polyether amino silicone oil. Background technique [0002] Polysiloxane, also known as silicone oil, is widely used in fabric softness and simulated finishing because of its soft chain and low surface tension. Ordinary amino silicone oil, such as aminoethylaminopropyl dimethyl siloxane, is a kind of softener widely used in the textile industry. It can improve the fabric feel, make it soft, smooth, elastic, anti-wrinkle, etc. Human friendly, so very popular. The good application performance of amino silicone oil stems from its ability to form a smooth low-energy silicone film on the surface of the fiber with the silicon methyl group facing outward, the Si-O dipole bond and the cationic amino group pointing to the fiber interface, but this arrangement makes the fiber appear It has a certain hydrophobicity, which reduces the hygroscopicity and wearing comfort of the fabric, and is gene...

Claims

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Application Information

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IPC IPC(8): C08G81/00C08G65/00D06M15/647
Inventor 成晓玲吴土萍余林胡永俊郝志峰孙明余倩何军
Owner GUANGDONG UNIV OF TECH
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