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

A fluorine-containing emulsifier, anionic fluorine-containing emulsion and method prepared based on the emulsifier

An anionic, emulsifier technology, applied in the field of fine chemicals, can solve the problems of unfavorable surface properties and environment of fluorine-containing emulsions, harsh reaction conditions, etc., and achieve the effect of saving resources and stable performance

Active Publication Date: 2017-01-11
SHAANXI UNIV OF SCI & TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are several methods for preparing common fluorine-containing emulsions: (1) homopolymerization or copolymerization of monomers under the joint action of conventional emulsifiers / fluorine-containing emulsifiers; (2) under the action of conventional emulsifiers / organic solvents Homopolymerization or copolymerization of the following monomers; (3) simple blending of polytetrafluoroethylene emulsions and conventional emulsions; but in the above methods, the final products contain conventional emulsifiers or (and) organic solvents, which is harmful to fluorine-containing Unfavorable surface properties and environment of emulsion products
Adding polymerizable fluorine-containing surfactants has become a new preparation method for fluorine-containing emulsions, but currently such fluorine-containing surfactants are mainly polyurethane-based, and organic solvents are also used in the synthesis process, and the reaction conditions are harsh.

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
  • A fluorine-containing emulsifier, anionic fluorine-containing emulsion and method prepared based on the emulsifier
  • A fluorine-containing emulsifier, anionic fluorine-containing emulsion and method prepared based on the emulsifier
  • A fluorine-containing emulsifier, anionic fluorine-containing emulsion and method prepared based on the emulsifier

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] A preparation method of anionic fluorine-containing emulsion, comprising the following steps:

[0033] 1) Raw materials: fluorine-containing acrylate, butyl acrylate, styrene, acrylic acid or 2-acrylamide-2-methylpropanesulfonic acid, emulsifier, initiator and water.

[0034] Wherein, the molar ratio of the polymerized monomer fluorine-containing acrylate, butyl acrylate, styrene, acrylic acid or 2-acrylamide-2-methylpropanesulfonic acid is 0.2-1.0:1.0:1.0:0.02-0.4; the emulsifier accounts for 0.5%-5% of the total mass of the polymerized monomers; the initiator accounts for 0.1-2% of the total mass of the polymerized monomers; water accounts for 200%-300% of the total mass of the polymerized monomers.

[0035] 2) Add all kinds of above-mentioned raw materials (among them: 70% of water is added, and the remaining 30% is used for later use), put into a container and shear at high speed for 30 minutes to obtain a pre-emulsion.

[0036] 3) Add the remaining 30% water and 5...

Embodiment 1

[0040] An anionic fluorine-containing emulsion, its raw material components and consumption are as follows:

[0041] Fluorinated acrylate, butyl acrylate, styrene, acrylic acid, emulsifier (-R f For: -C 4 h 3 f 6 O), ammonium persulfate and water; wherein: the molar ratio of fluorine-containing acrylate, butyl acrylate, styrene, and acrylic acid is 0.7:1.0:1.0:0.02; emulsifier (-R f For: -C 4 h 3 f 6 O) accounts for 1.0% of the total mass of the polymerized monomers; ammonium persulfate accounts for 0.2% of the total mass of the polymerized monomers; water accounts for 220% of the total mass of the polymerized monomers.

[0042] The preparation process of the anionic fluorine-containing emulsion:

[0043]Add all kinds of above-mentioned raw materials (70% of which is added with water, and the remaining 30% for later use) into a container and shear at high speed for 30 minutes to obtain a pre-emulsion. Add the remaining 30% water and 5% pre-emulsion in a dry three-necke...

Embodiment 2

[0045] An anionic fluorine-containing emulsion, its raw material components and consumption are as follows:

[0046] Fluorinated acrylate, butyl acrylate, styrene, 2-acrylamide-2-methylpropanesulfonic acid, emulsifier (-R f For: -C 4 h 3 f 6 O), ammonium persulfate and water; wherein: the molar ratio of fluorine-containing acrylate, butyl acrylate, styrene, and 2-acrylamide-2-methylpropanesulfonic acid is 0.5: 1.0: 1.0: 0.4; emulsifier ( -R f For: -C 4 h 3 f 6 O) accounts for 2.2% of the total mass of the polymerized monomers; ammonium persulfate accounts for 1.1% of the total mass of the polymerized monomers; water accounts for 230% of the total mass of the polymerized monomers.

[0047] The preparation process of the anionic fluorine-containing emulsion:

[0048] Add all kinds of above-mentioned raw materials (70% of which is added with water, and the remaining 30% for later use) into a container and shear at high speed for 30 minutes to obtain a pre-emulsion. Add t...

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 present invention discloses a fluorine-containing emulsifier as well as anionic fluorine-containing emulsion prepared based on the emulsifier and a method, and belongs to the technical field of fine chemical preparation. Fluorocarbon emulsion containing a sulfonic acid group consists of the following raw materials: fluorine-containing acrylate, butyl acrylate, styrene, acrylic acid or 2-acrylamide-2-methylpropane sulfonic acid, an emulsifier, an initiator and water. The preparation comprises: carrying out high speed shearing on all types of the raw materials (wherein 70% of the water is added, and the remaining 30% of the water is kept for later use) for 30 minutes, taking the remaining 30% of water and 5% of the pre-emulsion after obtaining pre-emulsion, raising the temperature of the water and the pre-emulsion to 50-80 DEG C under stirring, and starting to carry out heat preservation; and starting to dropwise add the remaining pre-emulsion after carrying out the heat preservation for 30 minutes, enabling the remaining pre-emulsion to react for 5-25 hours, cooling the remaining pre-emulsion to the room temperature, and discharging the cooled pre-emulsion, thereby preparing the anionic fluorine-containing emulsion . According to the present invention, the emulsifier in the emulsion directly reacts with a polymeric monomer, thereby avoiding a migration problem of a conventional emulsifier; and meanwhile the water is used as a dispersion medium, so that no organic solvent is contained, resources are saved, and environment-friendly requirements are satisfied..

Description

technical field [0001] The invention belongs to the field of fine chemicals and relates to an emulsion and a preparation method thereof, in particular to a fluorine-containing emulsifier and an anionic fluorine-containing emulsion prepared based on the emulsifier and the method. Background technique [0002] Acrylate emulsion has good film-forming properties, good workability, alkali resistance of the coating film, good color retention, and no pollution, etc., and has been widely used. However, its stain resistance, weather resistance, heat resistance, oil resistance, etc. are not satisfactory, so further optimization is needed for acrylate emulsions. [0003] Fluoropolymers are widely used due to their "three high and two phobic" properties of high surface activity, high heat resistance stability, high chemical inertness, hydrophobicity and oil repellency. At present, there are several methods for preparing common fluorine-containing emulsions: (1) homopolymerization or co...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C08F2/30C08G65/00C08F220/18C08F212/08C08F220/22C08F220/06C08F220/58
Inventor 宋洁周雷樊孟孟李刚辉
Owner SHAANXI UNIV OF SCI & 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