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A kind of preparation method of self-emulsifying block copolymerization silicone oil emulsion

A technology of block copolymerization and silicone oil emulsion, which is applied in the field of silicone, can solve problems such as environmental pollution and affecting product performance, and achieve the effect of avoiding the impact of product performance

Active Publication Date: 2021-12-14
浙江理工大学桐乡研究院有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when preparing polyether amino block silicone oil, it is often necessary to add a large amount of emulsifier for emulsification. The use of emulsifier will affect the performance of the product to a certain extent. Will cause some pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of preparation method of self-emulsifying block copolymerization silicone oil emulsion, concrete steps are as follows:

[0026] (1) Mix 100g of terminal hydrogen-containing silicone oil, 12g of allyl epoxy polyether and 5.6g of absolute ethanol evenly, stir and heat up to 65°C, add 0.3ml of chloroplatinic acid catalyst, keep warm for 3 hours, cool down to 40°C and take out , to obtain terminal epoxy intermediates.

[0027] The molar ratio of terminal hydrogen-containing silicone oil and allyl epoxy polyether added in this example is 1:2, wherein the molecular weight of terminal hydrogen-containing silicone oil is 8000, the molecular weight of allyl epoxy polyether is 480, and the solvent is anhydrous The mass of ethanol accounts for 5% of the total mass of terminal hydrogen-containing silicone oil and allyl epoxy polyether.

[0028] (2) Mix 100g of epoxy-terminated intermediate and 1.5g of N-N dimethylethylenediamine evenly, stir and heat up to 100°C for 8h unti...

Embodiment 2

[0031] A method for preparing a self-emulsifying block copolymerized silicone oil emulsion, the specific steps are the same as in Example 1, the difference is: (1) 100g of terminal hydrogen-containing silicone oil, 12g of allyl epoxy polyether and 5.6g of absolute ethanol Mix evenly, stir and heat up to 65°C, add 0.3ml of chloroplatinic acid catalyst, keep it warm for 3 hours, cool down to 40°C, and take out the terminal epoxy intermediate.

[0032] The molar ratio of terminal hydrogen-containing silicone oil and allyl epoxy polyether added in this example is 1:2, wherein the molecular weight of terminal hydrogen-containing silicone oil is 8000, the molecular weight of allyl epoxy polyether is 480, and the solvent is anhydrous The mass of ethanol accounts for 5% of the total mass of terminal hydrogen-containing silicone oil and allyl epoxy polyether.

[0033] (2) Mix 100g of epoxy-terminated intermediate and 1.8g of N-N dimethylethylenediamine evenly, stir and heat up to 100°C...

Embodiment 3

[0036] A method for preparing a self-emulsifying block copolymerized silicone oil emulsion, the specific steps are the same as in Example 1, the difference is: (1) 100g of terminal hydrogen-containing silicone oil, 9.6g of allyl epoxy polyether and 5.5g of anhydrous Mix ethanol evenly, stir and raise the temperature to 65°C, add 0.3ml of chloroplatinic acid catalyst, keep the reaction for 3h, cool down to 30°C, and take out the terminal epoxy intermediate.

[0037] The molar ratio of terminal hydrogen-containing silicone oil and allyl epoxy polyether added in this example is 1:2, wherein the molecular weight of terminal hydrogen-containing silicone oil is 10000, the molecular weight of allyl epoxy polyether is 480, and the solvent is anhydrous The mass of ethanol accounts for 5% of the total mass of terminal hydrogen-containing silicone oil and allyl epoxy polyether.

[0038] (2) Mix 100g of epoxy-terminated intermediate and 1.2g of N-N dimethylethylenediamine evenly, stir and...

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PUM

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Abstract

The invention relates to a preparation method of a self-emulsifying block copolymerized silicone oil emulsion, which belongs to the technical field of organic silicon. The present invention uses terminal hydrogen-containing silicone oil as a raw material, reacts with allyl epoxy polyether under the action of a chloroplatinic acid catalyst and a small amount of solvent absolute ethanol to generate a terminal epoxy intermediate; then mix the terminal epoxy intermediate with N- N-dimethylethylenediamine reacts to form a block copolymerized silicone oil, and the hydrophilicity of the silicone oil is improved by adjusting the ratio of the polyether group to the dimethylsiloxane segment, thereby realizing the self-emulsification of the block silicone oil. The preparation process of the present invention is simple, the preparation raw materials are easy to obtain, and the obtained block copolymerized silicone oil can directly prepare the block copolymerized silicone oil emulsion without adding an emulsifier, which effectively avoids the influence of the emulsifier on the product performance and the harm to the environment, and Can effectively reduce costs.

Description

technical field [0001] The invention relates to a preparation method of a self-emulsifying block copolymerized silicone oil emulsion, which belongs to the technical field of organic silicon. 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. The fabric finishing agents commonly used in the market today are mainly amino silicone oil emulsions, which are generally easy to demulsify and yellow. The finished fabric is hydrophobic and does not absorb sweat, which greatly affects the comfort of the fabric; An emulsifier needs to be added for emulsification, which increases the production cost to a certain extent. In recent years, a series of modified silicone oils such as amino polyether, hydrophilic and epoxy / polyether have appeared one after another, but they cannot meet the increasing needs of people, and their effects are far from those developed a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/46C08J3/03C08L83/12
CPCC08G77/46C08J3/03C08J2383/12
Inventor 李永强王娟曹志海许海军
Owner 浙江理工大学桐乡研究院有限公司
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