Durable fabric waterproofing agent and preparation method thereof

A water repellent, durable technology, applied in plant fibers, textiles and papermaking, fiber processing, etc., can solve the problems of poor waterproof effect, molecular conformation rearrangement, poor waterproof effect, etc. It is suitable for industrial production and popularization and application. The effect of low surface energy, durable water repellency

Active Publication Date: 2019-03-15
湖北六棱花新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, studies have found that materials with short fluorocarbon chains are prone to rearrangement of molecular conformation when exposed to polar liquids, resulting in their waterproof effect being far inferior to finishing agents with long fluorocarbon chains
[0004] Therefore, in

Method used

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  • Durable fabric waterproofing agent and preparation method thereof
  • Durable fabric waterproofing agent and preparation method thereof
  • Durable fabric waterproofing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1. Preparation of trifluorooctyl p-acryloyloxybenzoate functional monomer

[0045] In a three-necked flask equipped with magnetic stirring, water separation device, reflux condenser and thermometer, add 4.15 grams of p-carboxybenzoic acid, 11.01 grams of tridecafluorooctyl alcohol, 0.8 grams of p-toluenesulfonic acid and 100 grams of xylene in sequence, and heat to 130° C., and reacted in a nitrogen atmosphere for 12 hours. After the reaction, the reaction solution was cooled to room temperature (20°C), filtered with suction, washed with hot water at 70°C, and dried (placed in a vacuum drying oven at a temperature of 50°C) to obtain a white solid The intermediate product of trifluorooctyl p-hydroxybenzoate.

[0046] In a three-necked flask equipped with a magnetic stirrer, a thermometer, a constant pressure dropping funnel, and a reflux condenser, add 20 grams of dichloromethane, 1.21 grams of triethylamine, and 4.84 grams of trifluorooctyl p-hydroxybenzoate in sequence,...

Embodiment 2

[0060] 1. Preparation of trifluorooctyl p-acryloyloxybenzoate functional monomer

[0061] In a three-necked flask equipped with magnetic stirring, water separation device, reflux condenser and thermometer, add 4.0 grams of p-carboxybenzoic acid, 11.0 grams of tridecafluorooctyl alcohol, 0.7 grams of p-toluenesulfonic acid and 98 grams of xylene in sequence, and heat to 130° C., and reacted in a nitrogen atmosphere for 12 hours. After the reaction, the reaction solution was cooled to room temperature (20°C), filtered with suction, washed with hot water at 70°C, and dried (placed in a vacuum drying oven at a temperature of 50°C) to obtain a white solid The intermediate product of trifluorooctyl p-hydroxybenzoate.

[0062] In a three-necked flask equipped with magnetic stirring, a thermometer, a constant pressure dropping funnel, and a reflux condenser, add 18 grams of dichloromethane, 1.21 grams of triethylamine, and 4.84 grams of tridefluorooctyl p-hydroxybenzoate in sequence,...

Embodiment 3

[0070] 1. Preparation of trifluorooctyl p-acryloyloxybenzoate functional monomer

[0071] In a three-necked flask equipped with magnetic stirring, water separation device, reflux condenser and thermometer, add 4.2 grams of p-carboxybenzoic acid, 11.3 grams of tridecafluorooctyl alcohol, 0.9 grams of p-toluenesulfonic acid and 102 grams of xylene successively, and heat to 150° C., and reacted in a nitrogen atmosphere for 24 hours. After the reaction, the reaction solution was cooled to room temperature (20°C), filtered with suction, washed with hot water at 70°C, and dried (placed in a vacuum drying oven at a temperature of 50°C) to obtain a white solid The intermediate product of trifluorooctyl p-hydroxybenzoate.

[0072] In a three-necked flask equipped with a magnetic stirrer, a thermometer, a constant pressure dropping funnel, and a reflux condenser, add 22 grams of dichloromethane, 1.24 grams of triethylamine, and 4.88 grams of tridefluorooctyl p-hydroxybenzoate in sequen...

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Abstract

The invention discloses a durable fabric waterproofing agent and a preparation method thereof. The method is characterized by comprising the steps of preparation of trifluorooctyl p-hydroxybenzoate, preparation of trifluorooctyl p-acryloyloxybenzoate, pre-emulsification, and emulsion polymerization. A macromolecular structure of the fabric waterproofing agent provided by the invention contains trifluorooctyl p-acryloyloxybenzoate, and the introduction of a benzene ring in the molecular structure can improve the durability of the waterproofing agent to water droplets and bring a long-lasting waterproof effect. Fluoroalkyl groups used in the invention are all short fluorocarbon chains, do not belong to the range of fluorine-containing chemicals banned by perfluorooctane sulfonamide derivatives, and have no biological toxicity or accumulation problems; meanwhile, the invention adopts emulsion polymerization to prepare the fluorine-containing acrylate polymer type fabric waterproof finishing agent, reaction conditions are mild, and the preparation method has the advantages that the process is simple, raw materials are easy to obtain, and the method is suitable for industrial productionas well as popularization and application.

Description

technical field [0001] The invention belongs to the fields of textile chemical auxiliary agents and polymer synthesis, and in particular relates to a durable fabric waterproofing agent and a preparation method thereof. Background technique [0002] Waterproof finishing is a symbol of the development of textile products towards multi-functionality and high performance. At present, fabric waterproof finishing agents are mainly fluorine-containing acrylate polymers, which have the characteristics of good film-forming properties, strong adhesion, high chemical and thermal stability, and UV resistance. They also have rich sources of raw materials and are easy to produce. Advantages of the implementation. [0003] Among many fluoropolymer materials, long fluorocarbon materials (C n f 2n+1 , n≥8) surface energy can be as low as 8 ~ 10mN / m, making it one of the most ideal and durable low surface energy polymer materials. However, with the deepening of research on fluorine-contai...

Claims

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Application Information

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IPC IPC(8): D06M15/277C08F220/24C08F220/18C08F220/20D06M101/06
CPCC08F220/18C08F220/1804C08F220/24D06M15/277D06M2101/06D06M2200/12C08F220/1818C08F220/20
Inventor 蔡露向帆何雪梅王春霞王思祺陈海家朱裕平姜雨淋
Owner 湖北六棱花新材料有限公司
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