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Water-based fluorosilicone acrylic resin and preparation method thereof

A technology of acrylic resin and water-based fluorosilicone, which is applied in the direction of antifouling/underwater coatings, coatings, paints containing biocide, etc., and can solve the problems of low utilization rate of fluorine and silicon monomers, increased gel rate, monomer Difficult emulsification and other problems, to achieve the effect of improving applicability, good film forming, and low surface energy

Inactive Publication Date: 2017-05-17
QUANGANG PETROCHEM RES INST OF FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong hydrophobic and oleophobic properties of organic fluorine and silicon monomers, in conventional emulsion polymerization, the monomers are difficult to emulsify, and it is also difficult to enter the micelles through the water system for polymerization, resulting in an increase in the gel rate. Fluorine, silicon The phenomenon of low monomer utilization rate and high production cost

Method used

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  • Water-based fluorosilicone acrylic resin and preparation method thereof
  • Water-based fluorosilicone acrylic resin and preparation method thereof
  • Water-based fluorosilicone acrylic resin and preparation method thereof

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preparation example Construction

[0039] A kind of preparation method of above-mentioned water-based fluorosilicone acrylic resin, is characterized in that, comprises the following steps:

[0040] Mix the acrylate monomer, organofluorine monomer, organosilicon monomer, initiator and co-stabilizer uniformly to obtain a mixed solution;

[0041] Dissolve the emulsifier in deionized water, add the mixture dropwise while stirring, stir evenly, and ultrasonically emulsify for 5 to 15 minutes to obtain a monomer fine emulsion;

[0042] Oxygen in the single-system emulsion is removed, the temperature is raised to 65-85° C. while stirring, kept for 3-6 hours, cooled to room temperature, discharged, and filtered.

[0043] The principle of the present invention is: the microemulsion of the monomer is obtained by ultrasonic fine emulsification, so that the monomer droplet becomes the main place where the polymerization reaction takes place, the monomer does not need to migrate from the droplet to the micelle, and the orga...

Embodiment 1

[0046] 1.8g acrylic acid, 5.0g hydroxyethyl acrylate, 30.0g methyl methacrylate, 22.0g butyl acrylate, 8.0g dodecafluoroheptyl methacrylate, 4.0g vinyl-terminated silicone oil, 0.3g azobis Isobutyronitrile (AIBN) and 2.0g n-hexadecane are mixed uniformly to obtain a mixed solution for use;

[0047] Dissolve 1.4g of allyloxynonylphenol polyoxyethylene ether ammonium sulfate in 100.0g of deionized water, add the above mixture dropwise while stirring, and after stirring evenly, emulsify for 10min with an ultrasonic cell pulverizer to obtain a monomer miniemulsion ;

[0048] Transfer the monomer fine emulsion into a four-necked flask equipped with a stirrer, a condenser, a nitrogen conduit, and a dropping funnel. After purging nitrogen to remove oxygen, the temperature was raised to 75°C while stirring, and the temperature was kept for 6 hours. After the reaction, it was lowered to Discharge at room temperature and filter with a 200-mesh sieve.

[0049] The water-based fluorosil...

Embodiment 2

[0051] 1.8g acrylic acid, 5.0g hydroxyethyl acrylate, 30.0g methyl methacrylate, 20.0g butyl methacrylate, 10.0g dodecafluoroheptyl methacrylate, 4.0g vinyl-terminated silicone oil, 0.3g AIBN and 2.0g n-hexadecane are mixed uniformly to obtain a mixed solution for use;

[0052] Dissolve 1.0g of allyloxynonylphenol polyoxyethylene ether ammonium sulfate and 0.4g of sodium lauryl sulfate in 100.0g of deionized water, add the above mixture dropwise while stirring, and after stirring evenly, use ultrasonic cell crushing Machine emulsification for 10 minutes to obtain monomer fine emulsion;

[0053] Transfer the monomer fine emulsion into a four-necked flask equipped with a stirrer, a condenser, a nitrogen conduit and a dropping funnel. After purging nitrogen to remove oxygen, heat up to 75°C while stirring, keep the temperature for 6 hours, and drop to Discharge at room temperature and filter with a 200-mesh sieve.

[0054] The water-based fluorosilicone acrylic resin emulsion o...

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Abstract

The invention relates to water-based fluorosilicone acrylic resin, which has a general molecular formula shown as the accompanying drawing, wherein x and y are respectively any one integer from 1 to 200; R1 is H or CH3; R2 is COOH, COO(CH2)3CH3, COOCH3, COO(CH2)2OH, COOCH2CF3, COOCH2CF2CHFCF3 or COOCH2CF(CF3)CHFCF(CF3)2; R3 is a silicon-containing chain section. The invention also discloses a preparation method of the water-based fluorosilicone acrylic resin. By a fine emulsion polymerization method, a fluorine-containing chain section and a silicon-containing chain section are simultaneously introduced into the resin, so that the performance of the water-based fluorosilicone acrylic resin is better; the preparation cost is lower.

Description

technical field [0001] The invention relates to the field of functional acrylic resin synthesis, in particular to a water-based fluorosilicone acrylic resin and a preparation method thereof. Background technique [0002] Water-based coatings have become one of the main development directions of environmentally friendly coatings because of their advantages such as energy saving, less volatile organic compounds (VOC), low cost, non-combustible, easy storage and transportation, non-toxic, non-irritating, and less harm to coating personnel. one. The main film-forming component of water-based coatings is water-based resin, and its preparation is the research and development direction of new water-based coatings. Among them, the research on new film-forming polymers mainly focuses on the chemical composition and spatial structure design of polymer molecular chains. [0003] Water-based acrylic resin has the advantages of good film-forming performance, low price, good color and g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/12C08F283/06C08F220/06C08F220/28C08F220/14C08F220/18C08F220/22C08F2/30C08F2/26C09D151/08C09D5/16
CPCC09D151/08C09D151/085C08F2/26C08F2/30C08F283/065C08F283/124C09D5/1662C09D5/18C08F220/281C08F220/1804
Inventor 刘灿培高举李培双陈明锋葛斌刘毅豪
Owner QUANGANG PETROCHEM RES INST OF FUJIAN NORMAL UNIV
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