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Seed emulsion polymerization using fluorine-containing copolymer as auxiliary emulsifier and its preparation method

A technology of co-emulsifier and emulsion polymer, which is used in the field of chemical polymer materials to achieve high chemical stability and good weather resistance.

Inactive Publication Date: 2016-06-08
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, there are relatively few reports on seed emulsion polymerization using fluorine-containing copolymers as co-emulsifiers.

Method used

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  • Seed emulsion polymerization using fluorine-containing copolymer as auxiliary emulsifier and its preparation method
  • Seed emulsion polymerization using fluorine-containing copolymer as auxiliary emulsifier and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Using free radical polymerization to synthesize P (HEMA-G01) as a co-emulsifier for seed emulsion polymerization

[0025] Aggregation steps:

[0026] Preparation of P(HEMA-G01):

[0027] (1) Add 10 g of hydroxyethyl methacrylate monomer, 20 g of hexafluorobutyl acrylate (G01), and 0.09 g of initiator into the reactor, vacuumize the system with nitrogen, and react at 60-70°C for 12 hours. After the reaction, the polymer product was dissolved in tetrahydrofuran and slowly added dropwise to the petroleum ether solution, and a white precipitate appeared. After suction filtration, continue to wash with tetrahydrofuran, repeat the above operation 3 times, and finally put the polymer into a vacuum oven to dry to obtain the P(HEMA-G01) copolymer.

[0028] (2) Monomer pre-emulsification:

[0029] Add 0.5g of methyl methacrylate in total to the colloidal solution consisting of 0.97gSDS, 0.64gOP-10, 0.16g fluorine-containing copolymer, 0.08gPH regulator and 50g deion...

Embodiment 2

[0032] Example 2: Using free radical polymerization to synthesize P (MMA-G01) as a co-emulsifier for seed emulsion polymerization

[0033] Aggregation steps:

[0034] Preparation of P(MMA-G01):

[0035] (1) Add 10g of methyl methacrylate monomer, 20g of hexafluorobutyl acrylate (G01), and 0.09g of initiator into the reactor, vacuumize the system with nitrogen, and react at 60-70°C for 12h. After the reaction, the polymer product was dissolved in tetrahydrofuran and slowly added dropwise to the petroleum ether solution, and a white precipitate appeared. Continue washing with tetrahydrofuran after suction filtration, repeat the above operation 3 times, and finally put the polymer into a vacuum oven to dry to obtain the prepared P(MMA-G01) copolymer.

[0036] (2) Monomer pre-emulsification:

[0037] Add 5.00 g of methyl methacrylate dropwise into a colloidal solution consisting of 2.71 g of SDS, 1.79 g of OP-10, 0.27 g of fluorine-containing copolymer, 0.13 g of pH regulator a...

Embodiment 3

[0040] Example 3: Using free radical polymerization to synthesize P (HEMA-G02) as a co-emulsifier for seed emulsion polymerization

[0041] Aggregation steps:

[0042] Preparation of P(HEMA-G02):

[0043] (1) Add 10g of hydroxyethyl methacrylate monomer, 20g of hexafluorobutyl methacrylate (G02) and 0.09g of initiator into the reactor, vacuum the system with nitrogen, and react at 60-70°C for 12h . After the reaction, the polymer product was dissolved in tetrahydrofuran and slowly added dropwise to the petroleum ether solution, and a white precipitate appeared. After suction filtration, continue to wash with tetrahydrofuran, repeat the above operation 3 times, and finally put the polymer into a vacuum oven to dry to obtain the prepared P(HEMA-G02) copolymer.

[0044] (2) Monomer pre-emulsification:

[0045] Add a total of 5.00g of methyl methacrylate dropwise into a colloidal solution consisting of 0.25gSDS, 0.20gOP-10, 0.1g fluorine-containing copolymer, 0.035gPH regulato...

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Abstract

The invention discloses seed emulsion polymerization using a fluorine-containing copolymer as an auxiliary emulsifier and a preparation method thereof, belonging to the field of chemical polymer materials. Considering the cost of fluorine-containing monomers, we use fluorine-containing copolymers as co-stabilizers to prepare fluorine-containing acrylic emulsions by seed emulsion polymerization to reduce the consumption of fluorine-containing monomers. First, fluorine-containing monomers and vinyl monomers or acrylic monomers are synthesized into copolymers by free radical polymerization; fluorine-containing copolymers are used as co-stabilizers, and fluorine-containing acrylic emulsions are synthesized by seed emulsion polymerization. The fluorine-containing emulsion obtained in the present invention not only retains the good film-forming properties, adhesion, gloss and color retention of polyacrylic acid emulsion, but also has the excellent performance of fluorine-containing polymers to a certain extent, showing excellent hydrophobicity, Oleophobicity, high chemical stability and good weather resistance, etc., and the particle size of the prepared fluorine-containing emulsion is 20-50nm.

Description

technical field [0001] The invention belongs to the field of chemical macromolecular materials. Specifically, the invention relates to the use of a radical polymerization method to synthesize a fluorine-containing copolymer as a co-emulsifier for seed emulsion polymerization and a preparation method thereof. Background technique [0002] Fluorine-containing acrylic emulsion has excellent weather resistance, corrosion resistance, water resistance and oil resistance, and has been widely used in the coating industry, textile finishing and leather finishing and other fields. The fluorine-containing acrylate polymer emulsion not only retains the good film-forming properties and adhesion of the polyacrylate emulsion, but also has the excellent performance of the fluorine-containing polymer to a certain extent, showing the surface characteristics of hydrophobicity, oleophobicity and antifouling. Applying fluorine-containing polymer emulsion coatings on the surface of glass and ston...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F120/14C08F2/26C08F2/30C08F220/22C08F220/28C08F220/14C09D133/12
Inventor 张震乾吉祥王佩何剑虹
Owner CHANGZHOU UNIV