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Preparation method of isocyanate polyether modified silicone oil finishing agent

A technology of polyether modification and isocyanate, which is applied in fiber treatment, textiles and papermaking, and fibers that affect crease behavior. It can solve the problems of different effects, anti-wrinkle effect needs to be further improved, and easy mutual restraint, etc., to achieve low cost, The effect of increasing wrinkle recovery angle and reducing strong damage

Active Publication Date: 2021-01-22
常州嘉博染织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Modification with different reactive groups has different effects after finishing. Commonly used modification methods include amino modification, carboxyl modification, fatty alcohol modification, epoxy group modification, etc., but side chain polyfunctional silicone oil Various functional groups are easy to restrict each other
Therefore, the anti-wrinkle effect of existing silicone finishing agents still needs to be further improved

Method used

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  • Preparation method of isocyanate polyether modified silicone oil finishing agent
  • Preparation method of isocyanate polyether modified silicone oil finishing agent
  • Preparation method of isocyanate polyether modified silicone oil finishing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Add 0.25mol cyclohexane-1,3 diisocyanate to a four-necked flask equipped with a thermometer, condenser, and magnetic stirrer, add 15mL dioxane to it, and stir and heat up under nitrogen protection conditions to 50°C, slowly add 0.125 molHPEG modified hydroxyalkyl polysiloxane dropwise, after the addition, raise the temperature to 70°C, add 3 drops of stannous octoate as a catalyst, and react for 3 hours to obtain isocyanate polyether modified polysiloxane pre- Polymer.

[0055] (2) Lower the isocyanate polyether-modified polysiloxane prepolymer prepared in step (1) to 20-30° C., add 0.1 mol of ethylene glycol, and continue to heat up to 90° C. to react for 4 hours to obtain the final product. Cool to room temperature, add water to disperse under vigorous stirring to obtain isocyanate-modified polysiloxane, which is light yellow transparent viscous liquid. The end-capping rate was calculated by referring to the method for calculating the end-capping rate above, and ...

Embodiment 2

[0059] Same as the preparation method in Example 1, the only difference is that the catalyst stannous octoate is replaced with dibutyltin dilaurate, all the other methods and consumption are constant, and the end-capping rate is calculated with reference to the method for calculating the end-capping rate above, The calculation results are shown in Table 1.

Embodiment 3

[0061] The same as the preparation method in Example 1, the only difference is that the catalyst stannous octoate is replaced by triethylenediamine, the rest of the methods and dosage remain unchanged, the end-capping rate is calculated with reference to the method for calculating the end-capping rate above, and the calculation results See Table 1.

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Abstract

The invention discloses a preparation method of an isocyanate polyether modified silicone oil finishing agent, and belongs to the technical field of modified silicone oil finishing agents. According to the preparation method, methylallyl polyoxyethylene ether (HPEG) modified hydroxyalkyl polysiloxane and cyclohexane 1,3-diisocyanate are used as raw materials, stannous octoate is used as a catalyst, and an isocyanate-terminated polyether siloxane prepolymer is obtained through a reaction; then with the prepolymer as a raw material and ethylene glycol as an end-capping reagent, a reaction is carried out to obtain the alcohol-terminated isocyanate polyether modified polysiloxane. When the prepared isocyanate polyether modified polysiloxane is used as a raw material for preparing a clothes finishing agent, the wrinkle recovery angle of the treated fabric is increased, and meanwhile, the strength damage of the finished fabric can be reduced. Under the optimal condition, the wrinkle recoveryangle of the treated fabric can reach 257.5 degrees, and the breaking strength retention rate reaches 99.1%.

Description

technical field [0001] The invention relates to a preparation method of an isocyanate polyether modified silicone oil finishing agent, and belongs to the technical field of modified silicone oil finishing agents. Background technique [0002] Silk fabric has the advantages of soft and smooth feel, bright luster, moisture absorption and breathability, and is comfortable to wear, so it is deeply loved by people. However, the wrinkling of silk fabrics after washing has limited its application, so the anti-wrinkle finishing of silk fabrics has received more and more attention. Silicone finishing agent is a type of softener with the most outstanding effect in finishing fabrics. It is widely used in the textile field and has excellent performance. It can effectively endow fabrics with various properties such as softness, smoothness, moisture absorption, antistatic and antibacterial. Oxane has excellent lubricity and film-forming properties, and a thin layer of silicone film is fo...

Claims

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Application Information

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IPC IPC(8): C08G77/46D06M15/647D06M15/53
CPCC08G77/46D06M15/647D06M15/53D06M2200/20
Inventor 林伟李科庄苍伟杨凤丽梁国斌
Owner 常州嘉博染织有限公司
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