Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of cationic fluorine silicon polyacrylate soap-free emulsion

A polyacrylate, soap-free emulsion technology, applied in the field of polymer chemical emulsion polymerization, can solve the problems of poor air permeability and flexibility of film formation, unfavorable coating performance, affecting application performance, etc., achieve good adhesion and eliminate adverse effects , Waterproof and oilproof performance improvement effect

Inactive Publication Date: 2014-07-23
SHAANXI RES INST OF AGRI PRODS PROCESSING TECH
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, judging from the current application situation, the fluorine-containing polyacrylate emulsion still has the problem of poor air permeability and poor flexibility in film formation, which is very unfavorable to the performance of the coating and significantly affects its application performance.

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of cationic fluorine silicon polyacrylate soap-free emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) 45g acryloyloxyethyltrimethylammonium chloride, 92g butyl acrylate, 100g perfluoroalkyl methacrylate (CH 2 =(R)C(O)CO(CH 2 ) 2 (CF 2 ) n CF 3 , where R is CH 3 , n is 9), 13g γ-methacryloxypropyltrimethoxysilane, 2g hydroxypropyl acrylate and 80g acetone are mixed uniformly to prepare mixture solution A;

[0024] (2) The mixture solution A and 2g of azobisisobutyronitrile were mixed and stirred evenly to obtain a mixture solution B, and the mixture solution B was polymerized at 60° C. for 2.5 hours to obtain a solution C; then, 850 g of water was added to the solution C while stirring, After stirring evenly, directly distill (60°C, normal pressure) to remove acetone to obtain cationic fluorosilicone polyacrylate prepolymer;

[0025] (3) Add 1.2 g of ammonium persulfate to the cationic fluorosilicon polyacrylate prepolymer, and then polymerize at 80° C. for 5 hours under stirring to obtain a cationic fluorosilicon polyacrylate soap-free emulsion.

Embodiment 2

[0027] (1) 30g methacryloxyethyltrimethylammonium chloride, 115g ethyl methacrylate, 100g perfluoroalkyl methacrylate (CH 2 =(R)C(O)CO(CH 2 ) 2 (CF 2 ) n CF 3 , where R is CH 3 , n is 5), 18g vinyltriethoxysilane, 1.5g hydroxyethyl acrylate and 100g cyclohexane are mixed uniformly to prepare mixture solution A;

[0028] (2) The mixture solution A and 0.8g benzoyl peroxide were mixed and stirred evenly to obtain a mixture solution B, and the mixture solution B was polymerized at 45°C for 4 hours to obtain a solution C; then, 1460g of water was added to the solution C while stirring, After stirring evenly, directly distill (82°C, normal pressure) to remove cyclohexane to obtain cationic fluorosilicone polyacrylate prepolymer;

[0029] (3) Add 2.5 g of ammonium persulfate to the cationic fluorosilicon polyacrylate prepolymer, and then polymerize at 85° C. for 4.5 hours under stirring to obtain a cationic fluorosilicon polyacrylate soap-free emulsion.

Embodiment 3

[0031] (1) 20g of acryloyloxyethyltrimethylammonium chloride, 130g of methyl acrylate, 100g of perfluoroalkyl acrylate (CH 2 =(R)C(O)CO(CH 2 ) 2 (CF 2 ) n CF 3 , where R is H, and n is 13), 15g γ-methacryloxypropyl trimethoxysilane, 2.5g hydroxyethyl acrylate and 50g ethyl acetate are mixed uniformly to prepare mixture solution A;

[0032] (2) Mix and stir the mixture solution A and 0.6g of azobisisobutyronitrile evenly to obtain the mixture solution B, and polymerize the mixture solution B at 50°C for 3.5 hours to obtain the solution C; then add 800g of water to the solution C while stirring , after stirring evenly, directly distill (80°C, normal pressure) to remove ethyl acetate to obtain a cationic fluorosilicon polyacrylate prepolymer;

[0033] (3) Add 4 g of potassium persulfate to the cationic fluorosilicon polyacrylate prepolymer, and then polymerize at 65° C. for 6 hours under stirring to obtain a cationic fluorosilicon polyacrylate soap-free emulsion.

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a preparation method of a cationic fluorine silicon polyacrylate soap-free emulsion, which comprises the following steps: evenly mixing a cationic monomer, a vinyl monomer, perfluoroalkyl(methyl) acrylate, an organic silicon monomer, a crosslinking monomer and organic solvent to obtain a mixture solution A; mixing the mixture solution A and oil-soluble initiator to obtain a mixture solution B; pre-emulsifying the mixture solution B, and polymerizing at 40-80 DEG C for 2-4 hours to obtain a solution C; adding water, directly distilling to remove the organic solvent, and adding water-soluble initiator to obtain a mixture; and while stirring, polymerizing at 50-90 DEG C for 4-7 hours to obtain the cationic fluorine silicon polyacrylate soap-free emulsion. According to the invention, the emulsion has favorable water and oil resistance, and is safe and environment-friendly; and a coated film of the emulsion has favorable flexibility and air permeability.

Description

technical field [0001] The invention belongs to the field of macromolecule chemical emulsion polymerization, and in particular relates to a preparation method of cationic fluorosilicon polyacrylate soap-free emulsion. Background technique [0002] Polyacrylate emulsion has good film-forming properties, good workability, alkali resistance of the coating film, good color retention and no pollution, and has been widely used. However, its stain resistance, weather resistance, heat resistance, oil resistance, etc. are not satisfactory, so further optimization of polyacrylate is needed. Due to the presence of C-F bonds in the molecular structure of fluorine-containing polyacrylate, the fluorine atoms are closely arranged around the carbon main chain, which can increase the water repellency, oil repellency, stain resistance, thermal stability, and chemical solvent resistance of the polymer. performance. In recent years, fluorine-containing polyacrylate emulsions have been widely ...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08F220/18C08F220/24C08F220/34C08F230/08C08F220/28C08F2/22
Inventor 李培枝刘晨迪杨晓武沈一丁牛育华赵志芳罗巧丽
Owner SHAANXI RES INST OF AGRI PRODS PROCESSING TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com