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Reactive polysiloxane modified polyacrylate soap-free emulsion and preparation method thereof

A technology of polyacrylate and polysiloxane, applied in the field of textile auxiliaries, can solve the problem of short reaction route and achieve the effects of good stability, no environmental pollution and small particle size distribution

Active Publication Date: 2021-02-05
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reactive polysiloxane-modified polyacrylate soap-free emulsion is prepared by using reactive emulsifier and soap-free emulsion polymerization technology with reactive monovinyl-terminated polysiloxane as the reactive monomer. The synthesis conditions are simple and the reaction The route is short, and it has wide application prospects in the field of waterproof and moisture-proof coatings, but there is no relevant report on the introduction of monovinyl-terminated polysiloxane into polyacrylate

Method used

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  • Reactive polysiloxane modified polyacrylate soap-free emulsion and preparation method thereof

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example 1

[0057] Step 1. Use a certain amount of reactive monovinyl polysiloxane monomer (Mn=2000), methyl methacrylate, and butyl methacrylate to prepare mixed monomers to obtain oil phase A; weigh allyloxy Nonylphenol polyoxyethylene ether ammonium sulfate and deionized water, allyloxy nonylphenol polyoxyethylene ether ammonium sulfate is dissolved in deionized water to form an emulsifier aqueous solution, and the aqueous phase B is prepared; the monovinyl polysilicon The mass ratio of oxane monomer (Mn=2000), methyl methacrylate, butyl methacrylate, allyloxy nonylphenol polyoxyethylene ether ammonium sulfate, and deionized water is 11:85:35:15 :128;

[0058] Step 2. Add the oil phase A prepared in step 1 to the water phase B at one time to form a mixed solution. At room temperature, use an ultrasonic disperser to ultrasonically disperse the mixed solution to obtain an O / W pre-emulsion. Ultrasonic The power is 5%, and the ultrasonic time is 20 minutes;

[0059] Step 3. Add 1 / 4 of th...

example 2

[0061] Step 1. Use a certain amount of reactive monovinyl polysiloxane monomer (Mn=2800), methyl acrylate, butyl acrylate, and lauryl acrylate to prepare mixed monomers to obtain oil phase A; weigh allyl oxide Allyloxy nonylphenol polyoxyethylene ether ammonium sulfate and deionized water, allyloxynonylphenol polyoxyethylene ether ammonium sulfate was dissolved in deionized water to form an emulsifier aqueous solution, and the aqueous phase B was prepared; the monovinyl polyoxyethylene ether The mass ratio of siloxane monomer (Mn=2800), methyl acrylate, butyl acrylate, lauryl acrylate, allyloxy nonylphenol polyoxyethylene ether ammonium sulfate, and deionized water is 9:35:65 :12:15:130;

[0062] Step 2. Add the oil phase A prepared in step 1 to the water phase B at one time to form a mixed solution. At room temperature, use an ultrasonic disperser to ultrasonically disperse the mixed solution to obtain an O / W pre-emulsion. Ultrasonic The power is 15%, and the ultrasonic time...

example 3

[0065] Step 1. Use a certain amount of reactive monovinyl polysiloxane monomer (Mn=2000), methyl methacrylate, and octadecyl acrylate to prepare mixed monomers to obtain oil phase A; weigh methacryloxy Ethyl dimethyl cetyl ammonium bromide and deionized water, allyloxynonylphenol polyoxyethylene ether ammonium sulfate was dissolved in deionized water to form an emulsifier aqueous solution, and the aqueous phase B was prepared; the monoethylene The mass ratio of polysiloxane monomer (Mn=2000), methyl methacrylate, stearyl acrylate, methacryloxyethyl dimethyl hexadecyl ammonium bromide and deionized water is 9 :58:22:15:130;

[0066] Step 2. Add the oil phase A prepared in step 1 to the water phase B at one time to form a mixed solution. At room temperature, use an ultrasonic disperser to ultrasonically disperse the mixed solution to obtain an O / W pre-emulsion. Ultrasonic The power is 5%, and the ultrasonic time is 5 minutes;

[0067] Step 3. Add 1 / 2 of the O / W pre-emulsion ob...

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Abstract

The invention discloses a reactive polysiloxane modified polyacrylate soap-free emulsion. The reactive polysiloxane modified polyacrylate soap-free emulsion comprises the following components in partsby mass: 1-10 parts of a monovinyl polysiloxane monomer, 20-50 parts of an acrylate monomer, 0.5-5.0 parts of a reactive emulsifier, 0.5-4.0 parts of an initiator and 50-80 parts of deionized water.Reactive monovinyl polysiloxane and acrylate monomers are used as reaction monomers, a reactive emulsifier is adopted, and the reactive polysiloxane modified polyacrylate soap-free emulsion is prepared through a soap-free emulsion polymerization technology. The prepared reactive polysiloxane modified polyacrylic acid soap-free emulsion is high in stability and small in emulsion particle size distribution. The method disclosed by the invention is simple in process, does not pollute the environment, and has a very wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of textile auxiliaries, and in particular relates to a preparation method and application of a reactive polysiloxane-modified polyacrylate soap-free emulsion. Background technique [0002] Acrylate polymers have the characteristics of excellent oxidation resistance, photochemical stability, good film-forming properties, decorative properties, high strength, weathering resistance and outstanding oil resistance, and the source of raw materials is abundant, cheap, and easy to implement. Its emulsion Products are widely used in many ways. However, acrylate emulsions also have some disadvantages, such as poor moisture permeability, water resistance, solvent resistance, brittleness at low temperature, stickiness at high temperature, etc., which greatly restrict the development of acrylate emulsions. Polysiloxane molecular main chain has high bond energy, large molecular volume, and low cohesive energy density, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/12C08F220/14C08F220/18C08F230/02C08F220/34C08F2/22C08F2/24
CPCC08F283/124C08F2/22C08F2/24C08F220/14C08F220/1804C08F220/1812C08F220/1818C08F220/34C08F230/02
Inventor 周建华王琳
Owner SHAANXI UNIV OF SCI & TECH
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