Multipolymer resin water dispersoid containing fluorine and silicon

A multi-copolymer and dispersion technology, applied in the field of multi-copolymer resin water dispersion, can solve problems such as weak adhesion, and achieve the effects of high weather resistance, uniform film formation, and improved light aging resistance.

Active Publication Date: 2008-07-02
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Use fluorine monomers and organosilanes to improve anti-light aging performance, film-forming performance and mechanical properties; introduce adhesive chain segments, such as aliphatic carboxylic acids and their esters, to solve the problem of weak adhesion of fluorine and silicon materials to the substrate Problem: The raw materials that adopt are all widely sourced, make the present invention have application prospect

Method used

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  • Multipolymer resin water dispersoid containing fluorine and silicon
  • Multipolymer resin water dispersoid containing fluorine and silicon
  • Multipolymer resin water dispersoid containing fluorine and silicon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 52.8g vinyl acetate, 5.5g isobutyl vinyl ether, 4.5g undecylenic acid, 2.5g acrylic acid, 27g vinyl triethoxysilane, 20g ethylene glycol ether, 25g ethyl acetate, 15g xylene Put it into a 1000ml stainless steel high-pressure reaction kettle, seal the kettle body, and use high-purity N 2 Replace the air in the kettle 4 times to remove oxygen, press in 70g of chlorotrifluoroethylene, increase the pressure to 1.2MPa, stir at 300r / min for 1h, and add 1.7g of azobisisobutyronitrile to the reactor in 4 times within 6h , And gradually increase the temperature to 70°C, keep it for 18h, lower the temperature to 50°C, distill 35g of solvent under reduced pressure, adjust the stirring speed to 1200r / min, add 3.67g triethylamine and 150g water, continue stirring for 3h, continue vacuum distillation Discharge 16 g of solvent, cool and discharge. The resulting water dispersion is translucent and light blue, with a coating viscosity of 6"23 and a solid content of 39%.

[0026] This embodi...

Embodiment 2

[0028] 42.8g vinyl acetate, 6g isobutyl vinyl ether, 15.5g hydroxybutyl vinyl ether, 4.1g undecylenic acid, 3g acrylic acid, 10g vinyl triethoxysilane, 20g ethylene glycol dimethyl ether, Put 25g ethyl acetate and 15g xylene into a 1000ml stainless steel autoclave, seal the body and use high-purity N 2 Replace the air in the kettle 4 times to remove oxygen, press in 80g of chlorotrifluoroethylene, and increase the pressure to 1.2MPa, stir at 300r / min for 1h, and add 1.6g of azobisisobutyronitrile to the reactor in 4 times within 6h , And gradually increase the temperature to 70°C, keep it for 18h, lower the temperature to 50°C, distill 35g of solvent under reduced pressure, adjust the stirring speed to 1200r / min, add 3.67g triethylamine and 150g water, continue stirring for 3h, continue vacuum distillation Discharge 16 g of solvent, cool and discharge. The obtained water dispersion is translucent and light blue, with a coating viscosity of 10"2 and a solid content of 42%.

[0029]...

Embodiment 3 5

[0031] The operation steps of Examples 3 to 5 are the same as Examples 1 and 2. The addition amount of each raw material is shown in Table 1, and the performance of the examples is compared with the acrylic solvent resin and the two-component acrylic polyurethane resin in Table 2.

[0032] Table 1: Examples three to five raw material consumption

[0033] Example

three

Four

Fives

Vinyl acetate (g)

50.8

45.6

38.8

Isobutyl vinyl ether (g)

5.6

5.5

6.0

Hydroxybutyl vinyl ether (g)

2

6.2

18.0

Undecylenic acid (g)

4.5

4.3

4.1

Acrylic (g)

2.7

2.8

3.0

Vinyl triethoxy silane (g)

25

22.1

15

Ethylene glycol ether (initial addition amount g / retention amount after distillation g)

60 / 20

0 / 0

0

Ethylene glycol dimethyl ether (initial addition amount g / retention amount after distillation g)

...

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PUM

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Abstract

The invention relates to a multicomponent copolymer resin aqueous dispersion containing fluorin and silicon, which is characterized in that copolymer resin that is polymerized from free radicals of polymer monomer material in solvent and cosolvent can emulsify and disperse naturally in water to form aqueous dispersion without being added with emulgator. The polymer monomer material of the multicomponent copolymer comprises 15-30 mass percent of liquefied olefin containing fluorin, 2-7 mass percent of organosilane containing duplet bond and oxygen atom, 15-25 mass percent of aliphatic carboxylic acid with duplet bond, mixture of aliphatic carboxylic acid esters with duplet bond and alkyl vinyl ether, 1-3 mass percent of cosolvent and 40-65 mass percent of water. The aqueous dispersion prepared by the invention can be taken as base stock of onecomponent coating and also can be made into base stock of two-component coating after being solidified with hydrophilic isocyanate. The coating prepared by adopting the invention has the advantages of photoaging resistance, low surface energy, film forming ability, etc. and can be used in field of external wall coating of building that requires high weatherability.

Description

Technical field [0001] The invention relates to an aqueous dispersion of a multi-element copolymer resin containing fluorine and silicon. Background technique [0002] Polymers prepared from fluorine-containing olefins have been widely used because of their outstanding advantages in weather resistance and mechanical properties. However, fluoropolymer resins with excellent performance, industrialization, and environmental protection are still in urgent need of further development. Patents US4151340, US4345057, etc. give the general synthesis methods of traditional solvent-based fluoropolymer resins, and are widely used in coatings due to their excellent weather resistance; but traditional fluoropolymers are solvent-based resins that can volatile organic compounds. Substances have obvious destructive effects on the environment. [0003] Patent US5859123, Patent CN1362422 and Patent CN1322775 all use conventional emulsifiers as a means of dispersing fluorine-containing copolymers in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F214/18C08F2/04C08F230/08C08F220/06
Inventor 郑天亮王轩陈冰清王兵存李英波
Owner BEIHANG UNIV
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