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Chlorine-free durable waterproof and oil-proof agent and preparation method thereof

A waterproof and oil-repellent agent, waterproof and oil-repellent technology, applied in the direction of textiles and papermaking, fiber treatment, plant fiber, etc., can solve the problem of limiting the use of cross-linking monomers, great influence on water and oil repellency, and affecting water and oil repellency and other issues, to achieve the effect of being beneficial to environmental protection, improving waterproof and oil-proof performance, and enhancing the effect of water and oil repellency

Pending Publication Date: 2022-04-15
桐乡市钜成涂装科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] ①Introduction of cross-linking monomers: cross-linking monomers have a greater impact on water and oil repellency, and water and oil repellency will be adversely affected, so this method limits the use of cross-linking monomers
[0009] ②Introduction of vinyl chloride / vinylidene chloride: Vinyl chloride / vinylidene chloride has relatively little effect on water and oil repellency, but only relying on the polarization of chlorine cannot achieve good washing resistance
[0012] 2. Vinyl chloride / vinylidene chloride is highly toxic, and improper use in production may easily lead to safety accidents, and vinyl chloride / vinylidene chloride is likely to remain in the finished water and oil repellent emulsion
[0013] 3. Regardless of the introduction of cross-linking monomers or vinyl chloride / vinylidene chloride, they will occupy a considerable proportion in the same polymer polymer, thereby diluting the concentration of perfluoroalkylethyl (meth)acrylate , will more or less affect the water and oil repellency

Method used

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  • Chlorine-free durable waterproof and oil-proof agent and preparation method thereof
  • Chlorine-free durable waterproof and oil-proof agent and preparation method thereof
  • Chlorine-free durable waterproof and oil-proof agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Fluorine-containing polymers and fluorine-free polymers were respectively prepared by conventional free radical emulsion polymerization process according to the following proportions.

[0048]

[0049] 1. The specific preparation method of water and oil repellent is as follows:

[0050] (1) Stir and insulate the ingredients except the initiator at 60°C for 30 minutes, high-speed shear for 5 minutes, and homogenize;

[0051] (2) feed liquid is poured into reaction bottle, logical nitrogen N 2 , the temperature dropped to 55°C, and the nitrogen gas was turned off;

[0052] (3) The initiator is diluted with 10 times of water, and the initiator is added dropwise when the temperature in the reaction bottle rises to 62°C;

[0053] (4) 15 minutes after the initiator was added dropwise, the temperature rise reaction began, and the temperature rose to 68-69°C and began to fall. After 20 minutes, the initiator was dripped and kept warm to 62-65°C. Continue to react until the...

Embodiment 2

[0060] Fluorine-containing polymers and fluorine-free polymers were respectively prepared by conventional free radical emulsion polymerization process according to the following proportions.

[0061]

[0062]

[0063] The specific preparation method of the water and oil repellent is the same as in Example 1.

[0064] According to the mass ratio of 1:1, the fluorine-containing polymer and the fluorine-free polymer are evenly mixed.

[0065] The waterproof and oil-repellent finishing method of fabric is identical with embodiment 1.

Embodiment 3

[0067] Fluorine-containing polymers and fluorine-free polymers were respectively prepared by conventional free radical emulsion polymerization process according to the following proportions.

[0068]

[0069] The specific preparation method of the water and oil repellent is the same as in Example 1.

[0070] According to the mass ratio of 1:1, the fluorine-containing polymer and the fluorine-free polymer are evenly mixed.

[0071] The waterproof and oil-repellent finishing method of fabric is identical with embodiment 1.

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Abstract

The invention discloses a chlorine-free durable waterproof and oil-proof agent, which is composed of a fluorine-containing polymer and a fluorine-free polymer in a mass ratio of 0.1: 9.9-9.9: 0.1. The present invention is a binary water-and oil-repellent agent formed from a fluorine-containing polymer and a fluorine-free polymer as a carrier, in which the fluorine-containing polymer as a main body is linked to the fluorine-free polymer as a carrier via a cross-linking group (the linking occurs during a drying process during use of the water-and oil-repellent agent), the fluorine-containing polymer serving as a main body has the main function of water and oil repellency, and the fluorine-free polymer serving as a carrier has other functions of durability and the like. On the basis that vinyl chloride / vinylidene chloride is not introduced, the waterproof and oil-proof functions and the durability are divided into two functions, so that the waterproof and oil-proof performance and the durability are balanced, and the waterproof and oil-proof effects of the water and oil repellent agent are enhanced.

Description

technical field [0001] The invention relates to the field of fabric finishing, in particular to a waterproof and oil-repellent agent for fabrics and a preparation method thereof. Background technique [0002] In the technical field of water and oil repellent finishing of fabrics, the latex of perfluorooctylethyl (meth)acrylate polymer is often used for treatment. For reasons of environmental protection, it is currently partially converted to the use of perfluorohexylethyl (meth)acrylate polymers. With the increasingly stringent environmental protection requirements, perfluorohexylethyl (meth)acrylate polymers will occupy more and more market shares. The fluorine-free water repellents currently on the market can only be used for single waterproof finishing of fabrics because they do not have oil repellent function, but not for waterproof and oil repellent finishing. [0003] The basic synthesis method of water and oil repellent agent is: perfluorohexylethyl (meth)acrylate m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/277D06M15/263D06M101/06
Inventor 徐秀峰
Owner 桐乡市钜成涂装科技有限公司
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