Method for preparing self-cross linking type water-based fluorine-contained acrylic resin and polyurethane hybrid
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A technology of acrylic resin and water-based polyurethane is applied in the field of preparation of self-crosslinking water-based fluoroacrylic resin-polyurethane hybrid, which can solve problems such as high cost and achieve the effects of reducing cost, improving resin performance and mild reaction conditions
Active Publication Date: 2010-09-01
JIANGSU BLUESTAR GREEN TECH
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[0004] The present invention aims at the shortcomings of the above-mentioned water-based fluororesin, and uses water-based polyurethane to modify the water-based fluororesin, avoiding the disadvantage of high cost of water-based fluororesin, and at the same time compounding the excellent chemical properties of polyurethane
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Embodiment 1
[0024] (1) Under nitrogen protection, 2.500gMA (maleic anhydride), 29.89gAD (adipic acid), 22.41gNPG (neopentyl glycol), 8.460g TMPME (trimethylolpropane monoallyl ether), 5.000g BEPD (2-ethyl-2-butyl 1,3-propanediol), 5.5g dimethylbenzene, 0.2592g polymerization inhibitor (p-hydroxymethyl anisole) are put into with stirring, thermometer, nitrogen air duct, In the four-port reactor of the condenser tube and the water separator, the temperature was raised to 140° C., stirred, and the temperature was slowly raised to 190° C., and the heating time was 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, vacuum out the xylene at about 100°C. 0.045kPa, lower the temperature to 50-80°C and discharge to obtain the unsaturated hydroxyl-terminated polyester (A).
[0025] (2) 23.881g of the above-mentioned unsaturated hydroxyl-terminated polyester (A), 4.088g1,4-butanediol, and 3.591g of dimethylol propionic acid...
Embodiment 2
[0040] (1) Under nitrogen protection, 3.775gPA (phthalic anhydride), 29.89gAD (adipic acid), 23.710gBDO (1,4-butanediol), 6.063gTMPME (trimethylolpropane monoallyl ether), 5.5g dimethylbenzene, 0.259g polymerization inhibitor (p-hydroxymethyl anisole) are put into and have stirring, thermometer, nitrogen gas guide pipe, condenser pipe, in the four-port reactor of water trap, be warming up to 140 ℃, stir , the temperature was slowly raised to 190° C., and the heating time was 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, vacuum out the xylene at about 100°C. 0.045kPa, lower the temperature to 50-80°C and discharge to obtain the unsaturated hydroxyl-terminated polyester (A).
[0041] (2) Add 25.341g of the above-mentioned unsaturated hydroxyl-terminated polyester (A), 7.029g octane glycol, and 3.491g dimethylol butyric acid into a four-port reactor with a stirrer, a thermometer, a nitrogen gas guid...
Embodiment 3
[0055] (1) Under nitrogen protection, 3.775gPA (phthalic anhydride), 33.98gIPA (isophthalic acid), 31.09gHDO (1,6-hexanediol), 7.125gTMPME (trimethylolpropane monoallyl ether) , 5.5g dimethylbenzene, 0.3038g polymerization inhibitor (p-hydroxymethyl anisole) is put into with stirring, and thermometer, nitrogen gas guide pipe, condensing pipe, in the four-port reactor of water trap, be warming up to 140 ℃, Stir and slowly raise the temperature to 190°C for 4 hours. After the reaction at 190°C for 0.5 hours, start to measure the acid value. When the acid value drops to 5mgKOH / g resin, vacuum out the xylene at about 100°C. After the reaction is completed, dry it under vacuum for 1-2 hours. 0.045kPa, lower the temperature to 50-80°C and discharge to obtain the unsaturated hydroxyl-terminated polyester (A).
[0056](2) 21.351g of the above-mentioned unsaturated hydroxyl-terminated polyester (A), 4.088g1, 6-hexanediol, and 4.091g of dimethylol propionic acid are added into a four-w...
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Abstract
The invention relates to a method for preparing self-cross linking type water-based fluorine-contained acrylic resin and polyurethane hybrid, comprising the following process: (1) unsaturated hydroxylThe invention relates to a method for preparing self-cross linking type water-based fluorine-contained acrylic resin and polyurethane hybrid, comprising the following process: (1) unsaturated hydroxylee emulsion. The unsaturated double-linked water-based polyurethane and fluorine-contained acrylic resin are grafted innovatively, and the synthesized environmentally-friendly resin has the excellentee emulsion. The unsaturated double-linked water-based polyurethane and fluorine-contained acrylic resin are grafted innovatively, and the synthesized environmentally-friendly resin has the excellentperformance of both fluorocarbon resin and polyurethane resin and can be widely applied to building coating, woodenware coating and metal coating.performance of both fluorocarbon resin and polyurethane resin and can be widely applied to building coating, woodenware coating and metal coating.-terminated polyester is synthesized after the polycondensation of the double-linked polyhydric alcohol and polybasic acid; (2) the unsaturated hydroxyl-terminated polyester is used as the soft segmen-terminated polyester is synthesized after the polycondensation of the double-linked polyhydric alcohol and polybasic acid; (2) the unsaturated hydroxyl-terminated polyester is used as the soft segment of polyurethane, dihydric alcohol, hydrophilic monomer and isocyanate are added to the polyurethane to react with the polyurethane, production of the reaction is neutralized, and water is added to tt of polyurethane, dihydric alcohol, hydrophilic monomer and isocyanate are added to the polyurethane to react with the polyurethane, production of the reaction is neutralized, and water is added to the resultant of reaction for chain extension so as to prepare unsaturated double-linked water-based polyurethane; and (3) the water-based fluorine-contained acrylic resin and polyurethane hybrid in nuhe resultant of reaction for chain extension so as to prepare unsaturated double-linked water-based polyurethane; and (3) the water-based fluorine-contained acrylic resin and polyurethane hybrid in nucleocapsid structure is polymerized from the unsaturated double-linked water-based polyurethane used as surface active agent and the fluorine-contained acrylic resin and acrylic resin by emulsifier-frcleocapsid structure is polymerized from the unsaturated double-linked water-based polyurethane used as surface active agent and the fluorine-contained acrylic resin and acrylic resin by emulsifier-fr
Description
Technical field: [0001] The invention relates to a preparation method of a self-crosslinking waterborne fluoroacrylic resin-polyurethane hybrid used for substrates such as cement, wood, and metal. The invention synthesizes a new type of water-based fluororesin with a core-shell structure, a wide range of uses, and high cost performance by introducing unsaturated double bonds into polyurethane and copolymerizing it with fluoroacrylate monomers. Background technique: [0002] Although foreign water-based fluorine coatings have been developed for more than 20 years, the variety is still relatively single, and the performance of the coatings needs to be improved. Although my country has made some progress, compared with foreign countries, there is a big gap in both the variety of coatings and the performance of coatings. Due to the low polarity of the F-C bond in the fluorocarbon resin, the fluorocarbon polymer has low surface energy. Compared with other resins, it has excellen...
Claims
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