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Fluorosilicone resin, preparation method and application thereof

A technology of fluorosilicone resin and reaction solution, which is applied in textiles, papermaking, fiber treatment, etc. It can solve the problems of poor moisture permeability and achieve the effects of no change in whiteness, excellent moisture permeability, and simple preparation process

Inactive Publication Date: 2014-03-26
SUZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defect that fluorocarbon resin is used as a coating agent in the prior art and its moisture permeability is poor, and to provide an organic coating that still has good water repellency and moisture permeability after textile finishing, and has no change in hand feeling. Silicon modified fluorocarbon resin and preparation method thereof

Method used

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  • Fluorosilicone resin, preparation method and application thereof
  • Fluorosilicone resin, preparation method and application thereof
  • Fluorosilicone resin, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Synthesis of silicone resin

[0029] The reactor is equipped with mechanical stirring, thermometer, constant pressure addition funnel, ice-water bath cooling and reflux condenser.

[0030] First mix 650 grams of dimethyldichlorosilane and 1500 grams of methyltrichlorosilane to prepare mixed monomers.

[0031] Add 1200 g of water into the reactor, and after cooling to 0-25°C, add the above-mentioned mixed monomers into the constant-pressure feeding funnel, and slowly add the monomers dropwise. Control the reaction temperature below 25°C, add the mixed monomers dropwise in 3 hours, and keep warm at 0-25°C for 3 hours after the addition. After the reaction, 1200 g of butyl acetate was added for extraction x 3 times, the extracts were combined, washed with water 400 g x 3 times, dried by adding 120 g of anhydrous sodium sulfate for 2 h, and the desiccant was removed by filtration.

[0032] The filtrate was distilled off under reduced pressure at 50° C. and a vacuum of ...

Embodiment 2

[0043] 1. Preparation of fluorosilicone resin

[0044] The reactor is equipped with mechanical stirring, thermometer, oil bath heating, water separator and reflux condenser.

[0045]120 grams of cyclohexane, 45 grams of silicone resin and 70 grams of fluororesin (fluororesin 212 purchased from Wuxi Wanbo Paint Chemical Co., Ltd., with a carboxyl content of 3.5%) were sequentially added to the reactor. Stir to dissolve evenly. After adding 1.1 g of dibutyltin dilaurate and 2.8 g of glycidoxypropylmethyldimethoxysilane, the temperature of the reaction solution was raised to 70° C. and refluxed for water separation for 8 hours.

[0046] After the reaction ended, the reaction was stopped, and 4.5 grams of water were separated out. The reaction solution was distilled off cyclohexane under reduced pressure at 50°C and a vacuum of 10 mmHg to obtain 112 g of a colorless viscous fluorosilicone resin product with a yield of 97%.

[0047] 2. Coating agent for fabric finishing

[0048...

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Abstract

The invention relates to fluorosilicone resin, a preparation method and the application thereof. According to the fluorosilicone resin, the preparation method and the application thereof, organic silicon resin and organic fluorine resin are taken as raw materials and are subjected to catalysis and condensation under the action of a coupling agent to generate the fluorosilicone resin; and an obtained product can be solidified into a film and used as a coating agent, and can provide a water repellency effect when applied to fabric finishing, and simultaneously, the water vapor permeability required by wearability of textiles is not lost. The synthetic process for preparing the fluorosilicone resin coating agent is simple, special processing equipment is not required, and raw materials adopted for the synthesis are industrial raw materials, so that the preparation method is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a fluorosilicon material and a synthesis method thereof, in particular to a fluorosilicon coating agent applied to fabric finishing and a preparation method thereof. Background technique [0002] In recent years, the research and application of coupled fluorocarbon resins and fluorine-containing fabric finishing agents at home and abroad are very active, and gradually become a hot topic for new coating agents. At the same time, there are also many literatures about fluorocarbon resins and fluorine-containing fabric finishing agents reports. Since fluorine is the most electronegative element in the periodic table, the electronegativity (4.0), the fluorine atomic radius is small (van der Waals radius 0.135nm), and the chemical structure is stable. The C-C chain in the fluorocarbon resin molecule is tightly surrounded by fluorine atoms to form a helical structure. The resin fluoroolefins and vinyl esters (or ethers) are alternate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/02D06M15/657
Inventor 李战雄袁剑春蔡露张佳平
Owner SUZHOU UNIV
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