Water-based fluororesin, and its preparing method and use for coating

A resin and modification technology, which is applied in the field of emulsion deep blending method and emulsion core-shell copolymerization method, can solve the problems of insufficient selection of fluoropolymers, etc.

Inactive Publication Date: 2005-12-21
李兴明 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it adopts the core-shell copolymerization technology with fluorine-containing polymer as the core, there are deficiencies in the selection of fluorine-containing polymers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0032] method one

[0033] An example of a blend of MMA / EA / THV=40:59:1:3 was prepared using a semi-continuous batch process. The measured MFFT of latex is 9°C, which is lower than Tg=17°C of MMA / EA=40:60 calculated by Fox's formula.

[0034] first step

[0035] 1L deionized water

[0036]95g sodium salt of alkyl aryl polyether sulfate

[0037] 322g methyl methacrylate (10ug / g MEHQ)

[0038] 479g ethyl acrylate (15ug / g MEHQ)

[0039] 8g methacrylic acid (100ug / g MEHQ)

[0040] 1.5g ammonium persulfate

[0041] Procedure: All reactions were made into emulsions in 800 mL of water. Charge 200 mL of the emulsion and 200 mL of water into a 3-L flask with inert gas inlet tube, thermometer, stirring, addition funnel, and reflux condenser. Heat in a 95°C water bath until the temperature inside the bottle reaches 82°C. At this point reflux begins. Within a few minutes, the temperature will rise to about 85°C, indicating vigorous polymerization. When the reflux decreased, the ...

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PUM

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Abstract

The invention discloses a kind of acrylate modified from fluoride-contained polymer, and its application in dope. It can be obtained from deeply mixing or core-shuck copolymerizing of polymer resin emulsion of tetrafluorin ethane(TFE), hexafluoropropylene(HFP) and vinylidine fluoride(VDF) and propylene diethylene glycol dinitrate emulsion. Thereinto the core is the said fluoride polymer, the shuck is PA. The two kinds of propylene diethylene glycol dinitrate emulsion modified from fluoride polymer have simple producing technics, and is environment friendly. The dope made of them has good anti-waiting and chemistry resistant performance. It can produce room temperature solidified or low temperature roast dope used in such fields as construction, bridge, machine and so on.

Description

Field of invention: [0001] The present invention relates to two kinds of water-based fluororesins modified by acrylic resin, especially the water-based fluororesin in the form of stable emulsion; the preparation method of said water-based fluororesin, in particular relates to emulsion deep blending method and emulsion core-shell copolymerization method and the application of the emulsion of the water-based fluororesin in water-based fluorine coatings. Background technique: [0002] It is a world trend that bulk coatings, especially building exterior wall coatings, are developing in the direction of water-based. Acrylic emulsion paints and styrene-acrylic emulsion paints are the most used in water-based paints. The advantages of acrylic latex paint are low odor, easy construction, fast drying, relatively adjustable softness and hardness of the film-forming material, good adhesion, and relative weather resistance. Styrene acrylic latex paint is relatively more resistant to a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/04
Inventor 李兴明王玉文
Owner 李兴明
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