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Mfg. process and tech. of fluorine carbon emulsion for paint

A technology of fluorocarbon emulsion and manufacturing method, applied in the direction of coating, etc., can solve the problems of human body harmfulness and environmental pollution, and achieve the effects of good initiation, high gloss and excellent storage stability

Inactive Publication Date: 2006-11-15
青岛宏丰氟硅科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of a large amount of organic solvents will cause harmfulness to the human body and environmental pollution problems.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] water 240

[0024] Chlorotrifluoroethylene 250

[0025] Vinyl propionate 180

[0026] Undecylenic acid 3.5

[0027] Ethyl vinyl ether 60

[0028] Sodium dodecyl sulfonate 4

[0029] Polyoxyethylene alkyl ether 8.5

[0030] Sodium dihydrogen phosphate 3

[0031] Ammonium persulfate 4

[0032] As a result of the dispersion stability of the above-mentioned aqueous dispersion liquid, the mechanical stability was good, and there was no abnormality in the high-temperature stability. The fluorine content is 10.2%, the solid content is 44.3%, and the yield is 88.6%.

example 2

[0034] Firstly, the emulsifier and various monomers are weighed and added to the dispersion tank. The 5-liter reactor was filled with nitrogen and vacuumized, and this was repeated two or three times. Then the prepared solution is added to the reaction kettle under negative pressure. Add chlorotrifluoroethylene while stirring, raise the temperature to 40-100 degrees, react for 5-40 hours, and the pressure is 0.6-2.6MPa.

[0035] water 1300

[0036] Chlorotrifluoroethylene 1200

[0037] Vinyl acetate 760

[0038] Acrylic 14

[0039] Ethyl vinyl ether 220

[0040] Sodium perfluorooctanoic acid sulfonate 20

[0041] Polyoxyethylene alkyl ether 48

[0042] Sodium bicarbonate 35

[0043] 2,2,-Azobis[2-(2-imidazoline-2-generation)propane]dihydrochloride 22

[0044] As a result of the dispersion stability of the above-mentioned aqueous dispersion liquid, the mechanical stability was excellent, the storage stability was not abnormal, and the chemical stability was not abnorma...

example 3

[0045]Example 3 First, weigh the emulsifier and various monomers and add them to the dispersion tank. The 2-liter reactor was filled with nitrogen and vacuumized, and this was repeated two or three times. Then the prepared solution is added to the reaction kettle under negative pressure. Add chlorotrifluoroethylene while stirring, raise the temperature to 40-100 degrees, react for 5-40 hours, and the pressure is 0.6-2.6MPa.

[0046] water 480

[0047] Chlorotrifluoroethylene 445

[0048] Butenyl vinyl ether 312

[0049] Acrylic 6

[0050] Ethyl vinyl ether 120

[0051] Sodium perfluorooctanoic acid sulfonate 7.8

[0052] Sodium dodecyl sulfonate 15

[0053] Sodium bicarbonate 6

[0054] 2,2,-Azobis[2-(2-imidazoline-2-generation)propane]dihydrochloride 8

[0055] As a result of the dispersion stability of the above-mentioned aqueous dispersion liquid, the mechanical stability was excellent, the storage stability was not abnormal, and the chemical stability was not abno...

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PUM

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Abstract

A process for preparing the F-C emulsion used for paint to obtain the excellent coated film with high weatherability and resistance to dirt and water is prepared the emulsion polymerization reaction between fluorolefine, unsaturated vinyl monomer, vinyl carboxylate monomer and substituent cyclohexyl acrylate monomer in aqueous medium under the action of trigger.

Description

Technical field [0001] The invention belongs to a method for manufacturing a fluorine-containing copolymerized water-based emulsion, and specifically designs a synthesis method of a fluorocarbon water-based emulsion for coatings. Background technique [0002] In the field of coatings, fluorine-containing resin coatings with excellent weather resistance are attracting attention. Proposed fluorine-containing copolymers of chlorotrifluoroethylene, cyclohexyl vinyl ether or alkyl vinyl ether and hydroxyalkyl vinyl ether (JP-A-57-34107) and monochlorotrifluoroethylene, aliphatic ethylene Fluorine-containing copolymers for organic solvent-based coatings such as esters, fluorine-containing copolymers formed from hydroxyl-containing acrylate ethers (JP-A-61-57609). Not only can we obtain a high-gloss coating film from the above-mentioned organic solvent-based fluorine-containing copolymer coating composition, but the coating process and hardening of the coating film have also becom...

Claims

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Application Information

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IPC IPC(8): C08F14/22C08F2/24C08F14/04C08F14/28C09D127/12
Inventor 徐平先纪文任全辉董建伟陆青田
Owner 青岛宏丰氟硅科技有限公司
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