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Method for preparing water-proof, oil-proof fluorine acrylic acid containing cation/non-tonic surface active agent emulsions

A non-ionic surface and surfactant technology, which is applied in the field of fabric finishing agent preparation, can solve the problem of poor compatibility between fluorine-containing monomers and non-fluorine-containing monomers, surfactants that cannot reach the nanometer level, and surfactants Low activity and other problems, to achieve excellent water and oil repellent antifouling performance, stable polymerization rate, high surface activity effect

Inactive Publication Date: 2008-10-29
SHANGHAI FAREAST FLUORINE MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Simple pre-emulsification of surfactants cannot reach nanoscale
[0005] 2. The activity of the surfactant in the polymerization system is low, the dosage is large, and the polymerization system is unstable
[0006] 3. The compatibility between fluorine-containing monomers and non-fluorine-containing monomers is poor, the content of components in the polymer and the distribution of chains are not uniform, and the content of components fluctuates greatly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) 30 grams of perfluoroalkyl acrylate, 35 grams of methyl methacrylate, 35 grams of myristyl methacrylate, 200 grams of deionized water, 65 grams of organic solvent acetone, quaternary ammonium salt cationic surfactant, Add 3.5 grams of 0 non-ionic surfactant, 2 grams of N-methylolacrylamide, high shear at room temperature to obtain a pre-emulsion. Then put 1 / 5 of the pre-emulsion in a place with a stirring paddle, a thermometer, and reflux In the four-necked flask of the nitrogen pipe device, the temperature was raised to 60°C, and the initiator was added dropwise to initiate the polymerization reaction to obtain a bluish white emulsion with a solid content of about 30% and a conversion rate of >98%, and the acetone was distilled off.

Embodiment 2

[0025] (2) 35 grams of perfluoroalkyl acrylate, 30 grams of methyl methacrylate, 35 grams of myristyl methacrylate, 200 grams of deionized water, 65 grams of organic solvent acetone, quaternary ammonium salt cationic surfactant, Add 3.5 grams of 0 non-ionic surfactant, 2 grams of N-methylolacrylamide, high shear at room temperature to obtain a pre-emulsion. Then put 1 / 5 of the pre-emulsion in a place with a stirring paddle, a thermometer, and reflux In a four-necked flask with a nitrogen pipe passing device, the temperature was raised to 60° C., and the initiator was added dropwise to initiate the polymerization reaction. A bluish white emulsion with a solid content of about 30% and a conversion rate of >98% was obtained. The acetone was distilled off.

[0026] The water-repellent and oil-repellent fluorine-containing acrylic acid cationic nonionic surfactant emulsion of the present invention is used for the use method of fabric water-repellent and oil-repellent: add this emul...

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Abstract

The invention aims to provide a preparation method of a hydrophobic lipophobic fluorine-containing acrylic acid cation / non-ionic surfactant emulsion. The preparation method comprises the steps of: mixing copolymerization monomers with cationic surfactant quarternary ammonium salt, a non-ionic surfactant Peregal O and an initiator to obtain a pre-emulsion under high shearing condition, and allowing copolymerization with N-methylol acrylamide. The cation / non-ionic surfactant emulsion is obtained by using a high-speed shearing machine, so that the mechanical void effect makes the reactants to reach nanometer scale. The polymerization rate is stable and the composition distribution of the polymer is uniform. The inventive surfactant emulsion has good mechanical stability, pH stability, chemical stability, dilution stability, and storage stability. The textile post-treated by the inventive emulsion has excellent hydrophobic, lipophobic and anti-fouling properties.

Description

technical field [0001] The invention relates to a preparation method of a fabric finishing agent, in particular to a preparation method of a water- and oil-repellent fluorine-containing acrylic cationic / nonionic surfactant emulsion. Background technique [0002] Fluorine-containing alkyl copolymers belong to fabric finishing agents, which endow fabrics, leather, paper and other substrates with excellent waterproof, oil-proof and anti-fouling finishing effects. my country's research in this field started late, and most of the production technologies were mastered by 3M, DuPont, Daikin and other companies, resulting in high product prices and a sharp increase in the production cost of printing and dyeing products, which greatly reduced the competitiveness of Chinese products in the international market. [0003] Some companies and units in my country are also engaged in the research of this project, but there are the following problems: [0004] 1. Simple pre-emulsification o...

Claims

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Application Information

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IPC IPC(8): C08F220/22C08F2/24D06M15/277
Inventor 费植煌王忠严识渊朱正军尹松涛
Owner SHANGHAI FAREAST FLUORINE MATERIAL TECH
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