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Water and oil repellent finishing agent for fabrics and preparation method of finishing agent

A water- and oil-repellent, finishing agent technology, applied in fiber treatment, textiles and papermaking, etc., can solve problems such as environmental hazards, achieve mild reaction conditions, excellent water- and oil-repellent effects, and is suitable for industrial production and popularization.

Active Publication Date: 2015-05-06
苏州章贡纺织科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, perfluoroalkyl groups with a carbon chain length equal to or greater than eight carbon atoms will not undergo hydrolysis, photolysis or biodegradation in most environmental condition tests, have persistent environmental inertness and bioaccumulative toxicity, and cause harm to the environment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Water and oil repellent finishing agent for fabrics and preparation method of finishing agent
  • Water and oil repellent finishing agent for fabrics and preparation method of finishing agent
  • Water and oil repellent finishing agent for fabrics and preparation method of finishing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Preparation of 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyldimethylsilylpropyl acrylate monomer

[0035] In a three-necked flask equipped with magnetic stirring, a thermometer and a reflux condenser, add 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl bromide 42.7 gram, 7.2 grams of magnesium chips and 160 grams of tetrahydrofuran, heated to 65 ° C for 3 hours to generate the Grignard reagent tridecafluorooctylmagnesium bromide for subsequent use.

[0036] In a three-necked flask equipped with magnetic stirring, a thermometer and a reflux condenser, add 12.4 grams of allyl acrylate, 0.01 grams of chloroplatinic acid and 40 grams of toluene, stir to dissolve, raise the temperature to 71 ° C, and drop the dimethylformamide within 1 hour 10.4 grams of monochlorohydrogensilane. After reacting at 70° C. for 3 hours, the reaction was stopped. The solvent toluene and unreacted dimethyl monochlorohydrosilane were distilled off under reduced pressure, the distillation temperat...

Embodiment 2

[0046] 1. Preparation of bis(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)methylsilylpropyl acrylate

[0047] In a three-necked flask equipped with magnetic stirring, a thermometer and a reflux condenser, add 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl bromide 42.6 gram, 7.2 grams of magnesium chips and 150 grams of tetrahydrofuran, heated to 65° C. for 3 hours to generate the Grignard reagent tridecafluorooctylmagnesium bromide for subsequent use.

[0048] In a three-necked flask equipped with magnetic stirring, a thermometer and a reflux condenser, add 6.2 grams of allyl acrylate, 0.005 grams of chloroplatinic acid and 20 grams of toluene, stir to dissolve, raise the temperature to 71 ° C, drop the methyl alcohol within 1 hour Dichlorohydrosilane 6.0 g. After reacting at 70° C. for 3 hours, the reaction was stopped. The solvent toluene and unreacted methyldichlorohydrogensilane were distilled off under reduced pressure, the distillation temperature was 40° C., and the vac...

Embodiment 3

[0058] 1. Preparation of Tris(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)silylpropyl acrylate monomer

[0059] In a three-necked flask equipped with magnetic stirring, a thermometer and a reflux condenser, add 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl bromide 42.8 gram, 7.3 grams of magnesium chips and 172 grams of tetrahydrofuran were heated to 65° C. for 3 hours to generate the Grignard reagent tridecafluorooctylmagnesium bromide for subsequent use.

[0060]In a three-neck flask equipped with magnetic stirring, a thermometer and a reflux condenser, add 4.1 grams of allyl acrylate, 0.004 grams of chloroplatinic acid and 15 grams of toluene, stir to dissolve, raise the temperature to 70 ° C, and drop the trichloride within 1.2 hours. Hydrogen silane 4.6 g. After reacting at 70° C. for 3 hours, the reaction was stopped. The solvent toluene and unreacted trichlorohydrosilane were distilled off under reduced pressure, the distillation temperature was 40° C., and the vacuum...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a water and oil repellent finishing agent for fabrics and a preparation method of the finishing agent. The active ingredient of the finishing agent refers to perfluoroalkyl silicone acrylate copolymer. The preparation method comprises the following steps: mixing perfluoroalkyl silicone acrylate, butyl acrylate, methyl methacrylate and hydroxyethyl methylacrylate, initiating free radical emulsion copolymerization by virtue of a water-soluble initiator under the emulsification actions of a nonionic surfactant and an anionic surfactant, thereby obtaining the emulsion type perfluoroalkyl silicone acrylate water and oil repellent finishing agent with high stability for fabrics. The finishing agent is applied for finishing cotton fabrics, and the water and oil repellent effects are obviously improved. The water and oil repellent finishing agent provided by the invention is mild in preparation conditions, simple and convenient in preparation process and suitable for industrial production.

Description

technical field [0001] The invention relates to an emulsion-type fabric water-repellent and oil-repellent finishing agent and a preparation method thereof. The active ingredient of the finishing agent is fluoroalkyl silicon polyacrylate, which belongs to the technical field of textile chemical auxiliary agents and polymer synthesis. Background technique [0002] Water and oil repellent finishing is a symbol of the continuous development of textile products towards high performance and multifunctionality. The fabrics after water and oil repellent finishing have the characteristics of low surface energy. The importance of this kind of fabrics in the fields of clothing, decoration and industry has been gradually recognized and valued by people. [0003] The additives that can impart water and oil repellency to fabrics are mainly fluorine-containing acrylate polymers, which have the characteristics of good film-forming properties, strong adhesion, and UV resistance, and have the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/356
Inventor 蔡露李战雄臧雄袁艳华
Owner 苏州章贡纺织科技有限公司
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