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Preparation method of hydroxy fluorine-containing water-based acrylic resin-polyurethane hybrid

A technology of water-based acrylic and water-based polyurethane, applied in the direction of coating, etc., can solve problems such as high cost, and achieve the effects of cost reduction, excellent weather resistance, and mild reaction conditions

Active Publication Date: 2010-09-29
广东天银实业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention utilizes a single molecule of water-based polyurethane as a surface-active macromonomer, realizes hybridization with acrylic resin through free-radical soap-free emulsion polymerization, and the introduced hydroxy acrylate monomer can overcome the disadvantages of thermoplastic water-based resin through cross-linking and curing. Modification of fluoropropylene resin by water-based polyurethane avoids the disadvantage of high cost of fluoropropylene resin, and at the same time combines the excellent physical properties of polyurethane

Method used

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  • Preparation method of hydroxy fluorine-containing water-based acrylic resin-polyurethane hybrid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026](1) Under the protection of nitrogen, 26.80gAD (adipic acid), 3.460gBEPD (2-butyl-2-ethyl-1,3-propanediol), 6.300gTMPME (trimethylolpropane monoallyl ether) ), 14.85g NPG (neopentyl glycol), and 5.500g xylene were added to a reactor equipped with a stirrer, a thermometer, and a water separator, and the temperature was raised to 140°C. Stirring was started, and the temperature was gradually raised to 190°C over 4 hours. After the reaction at 190°C for 1 hour, start to measure the acid value; when the acid value drops to 5mgKOH / g resin, remove the xylene in a vacuum at 100°C, the vacuum degree is ≥0.045kPa, cool down to 40°C, filter, and discharge to obtain Unsaturated hydroxyl terminated polyester. Its hydroxyl value is 112 mgKOH / g resin; the functionality is 2.

[0027] (2) Add 20.20g of the above-mentioned unsaturated hydroxyl-terminated polyester, 1.750g of 1,4-butanediol, and 2.650g of dimethylol propionic acid into a reactor with a stirrer and a thermometer, and the...

Embodiment 2

[0037] (1) Under nitrogen protection, mix 15.80gAD (adipic acid), 5.82gMA (maleic anhydride), 6.820gCHDM (1,4-cyclohexanedimethanol), 6.800gTMPME (trimethylolpropane monoallyl Base ether), 15.78g NPG (neopentyl glycol), and 5.320g xylene were added to a reactor equipped with a stirrer, a thermometer, and a water separator, and the temperature was raised to 140°C, stirring was started, and the temperature was gradually raised to 190°C over 4 hours. After heat preservation at 190°C for 1 hour, start to measure the acid value; when the acid value drops to 5mgKOH / g resin, vacuum out xylene at about 100°C, the vacuum degree is ≥0.045kPa, cool down, filter, and discharge to obtain the unsaturated end Hydroxy polyester. Its hydroxyl value is 112 mgKOH / g resin; the functionality is 2.

[0038] (2) Add 20.12g of the above-mentioned unsaturated hydroxyl-terminated polyester, 5.100g of neopentyl glycol, and 3.580g of dimethylol butyric acid into a reactor with a stirrer and a thermomete...

Embodiment 3

[0048] (1) Under nitrogen protection, 12.87gAD (adipic acid), 8.000gMA (maleic anhydride), 6.220gCHDM (1,4-cyclohexanedimethanol), 6.560gTMPME (trimethylolpropane monoallyl base ether), 15.78g HDO (1,6-hexanediol), and 4.940g xylene were added to the reactor equipped with a stirrer, thermometer, and water separator, the temperature was raised to 140°C, stirring was started, and the temperature was gradually raised to 190°C in 4 hours. ℃. After heat preservation at 190°C for 1 hour, start to measure the acid value; when the acid value drops to 5mgKOH / g resin, vacuum out xylene at about 100°C, the vacuum degree is ≥0.045kPa, cool down, filter, and discharge to obtain the unsaturated end Hydroxy polyester. Its hydroxyl value is 112 mgKOH / g resin; the functionality is 2.

[0049] (2) Add 22.25g of the above-mentioned unsaturated hydroxyl-terminated polyester, 5.100g of 1,6-hexanediol, and 3.520g of dimethylol propionic acid into a reactor with a stirrer and a thermometer, and th...

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Abstract

The invention relates to a preparation method of hydroxy fluorine-containing water-based acrylic ester-polyurethane. The preparation process is as follows: (1) carrying out condensation polymerization on dihydric alcohol containing double bonds and binary acid at different proportions to synthesize unsaturated hydroxyl-terminated polyester; (2) taking unsaturated polyester as the talleta of polyurethane, adding a certain amount of dihydric alcohol chain extender so as to enable hydrophilic monomer, catalyst and diisocyanate to react, neutralizing and adding water for chain extension to prepare water-based polyurethane containing unsaturated double bonds; and (3) taking the macro-monomer of the water-based polyurethane as a surfactant, and utilizing acrylic ester- ethylene monomers, fluorine-containing acrylic ester monomers and hydroxyl acrylic ester monomers to synthesize the hydroxy fluorine-containing water-based acrylic resin-polyurethane hybrid by a nonsoap emulsion polymerization method. The invention can regulate the structure and performances of resin by regulating the use amount of fluorine monomers and hydroxyl monomers. The invention introduces hydroxyl into a water-based fluorine-containing acrylic ester polyurethane macromolecule chain so as to prepare room temperature-dried or baking-type thermoset water-based paint together with water-based polyisocyanates and water-based amino plastic, thus greatly improving the performance of the water-based paint; and the prepared paint can be used in various basal materials such as wooden wares, metal, plastics, concretes and the like.

Description

technical field [0001] The invention relates to a preparation method of a hydroxyl type fluorine-containing waterborne acrylic resin-polyurethane hybrid body. The thermosetting water-based paint formulated from it can be used on various substrates such as cement, wood, metal and plastic. The present invention introduces unsaturated double bonds into the water-based polyurethane macromolecular chain by using unsaturated polyester diol, so that it can be combined with acrylates (or vinyls), fluorine-containing acrylates, and hydroxyl-type acrylates. Soap-free emulsion copolymerization was carried out to synthesize a new type of hydroxyl water-based fluorine-containing resin with soap-free, high cost performance and wide application. Background technique [0002] Water-based coatings represent the development direction of coatings, and water-based resins play a decisive role in the performance of water-based coatings. Water-based coatings are divided into two categories, incl...

Claims

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Application Information

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IPC IPC(8): C08F283/00C08F220/22C08G18/68C08G63/676C09D151/08
Inventor 闫福安陈少双蔡明生郑宗武
Owner 广东天银实业有限公司
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