Preparation method of fluoride-free waterproof agent and product thereof

A fluorine-free water repellent and catalyst technology, applied in textiles and papermaking, liquid-repellent fibers, fiber treatment, etc., can solve the problems that fluorine-free water repellents are difficult to achieve waterproof effect, limited application, and the waterproof effect is not durable enough, etc. Achieve the effect of improving waterproof effect, high market prospect and strong adhesion

Pending Publication Date: 2020-11-17
染格材料科技(上海)有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Fluorine-containing water repellents have outstanding waterproof effects due to the excellent surface properties of fluorine-based substances, while fluorine-free water repellents are usually difficult to achieve a similar waterproof effect to fluorine-containing water repellents, so their applications are limited
Chinese

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  • Preparation method of fluoride-free waterproof agent and product thereof
  • Preparation method of fluoride-free waterproof agent and product thereof

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Example Embodiment

[0019] In order to solve the above problem, the first aspect of the present invention provides a method of preparing a fluorine-free water repellent, including the following steps:

[0020] a. Mix the organic solvent, catalyst, water, tetraeth ester and silane of orthosilicate to obtain a mixture;

[0021] b. Alkane derivatives, emulsifiers, initiators, water of the above mixture, the number of carbon atoms ≥ 10, mixed with fluorine-free water repellent.

[0022] The step A in this application is prepared by the modified nano silica mixture.

[0023] From the perspective of increasing the reaction rate, in some preferred embodiments, the organic solvent is selected from one or more of ethanol, diethyl ether, methanol, acetone, isopropanol, tetrahydrofuran; further preferred, The organic solvent is selected from one or more of ethanol, diethyl ether, methanol.

[0024] In some preferred embodiments, the catalyst is an acid catalyst or a base catalyst.

[0025] The acid catalyst in ...

Example Embodiment

[0052] Example 1

[0053] Example 1 provides a method for producing a fluorine-free waterproofing agent, comprising the steps of:

[0054] a. 320g to 900g of anhydrous ethanol and water were mixed, adjusted to pH 3 hydrochloric acid, stirred at 55 ℃ 25min, added dropwise 360g tetraethylorthosilicate and 10g 3- glycidoxypropyl methyl diethoxy silane, 60 ℃ stirred for 60min, to obtain a mixture.

[0055] b. Under nitrogen, the mixture in step a 100g, dodecanol 15g, 10g cardanol polyoxyethylene polyoxypropylene ethers (preferably Cable available from Shandong Chemical Co., Ltd., trademark BGF-6), 2g ammonium persulfate, 30g of water were mixed and reacted for 2h at 80 ℃, waterproofing agent to obtain fluorine-free.

Example Embodiment

[0056] Example 2

[0057] Example 2 provides a method for producing a fluorine-free waterproofing agent, comprising the steps of:

[0058] a. 320g to 900g of anhydrous ethanol and water were mixed, adjusted to pH 10 aqueous ammonia, stirred at 55 ℃ 25min, added dropwise 360g tetraethylorthosilicate and 10g 3- glycidoxypropyl triethoxysilane , 60 ℃ stirred for 60min, to obtain a mixture.

[0059] b. Under nitrogen, 100g of a mixture of step a, methyl eighteen 15g, 10g, linear alcohol ethoxylates (commercially available from Jiangsu MSC petrochemical plants, Grade OE-2), 2g through ammonium sulfate, 30g of water were mixed, adjusted to pH 8, the reaction 2h at 80 ℃, waterproofing agent to obtain fluorine-free.

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Abstract

The invention discloses a preparation method of a fluoride-free waterproof agent. The preparation method comprises the following steps of a, mixing an organic solvent, a catalyst and water, and addingtetraethyl orthosilicate and silane to obtain a mixed solution; and b, mixing the mixed solution, an alkane derivative with the carbon atom number of more than or equal to 10, an emulsifier, an initiator and water to obtain the fluoride-free waterproof agent. According to the method, through tight combination of inorganic materials and organic molecules, secondary roughness can be constructed onthe rough surface of a fabric, the surface tension of the fabric is reduced, and the waterproof effect of the fabric is improved; and besides, the adhesive force between the waterproof agent and the surface of the fabric is high, excellent waterproof performance can be kept for a long time, and the market prospect is extremely high.

Description

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Claims

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Application Information

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Owner 染格材料科技(上海)有限公司
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