Epoxy modified waterborne polyester resin and preparation method thereof
A water-based polyester resin and epoxy modification technology, applied in the field of chemical coatings, can solve the problems of limited application range, poor water resistance, slow water volatilization, etc., and achieve the effect of shortening reaction time, excellent performance and excellent adhesion
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Embodiment 1
[0026] An epoxy-modified water-based polyester resin, characterized in that it comprises the following components by weight: 20 parts of adipic acid, 25 parts of isophthalic acid, 5 parts of E-44 epoxy resin, trimethylolpropane 15 parts, 25 parts of dimethylol propionic acid (DMPA), 0.3 parts of monobutyl tin oxide (esterification catalyst), 12 parts of butyl glycol ether (BCS), 8 parts of propylene glycol methyl ether, N, N-di 3 parts of methyl ethanolamine (neutralizing agent).
[0027] The preparation method of the above-mentioned epoxy-modified water-based polyester resin comprises the following steps: first prepare a four-necked flask as a reaction vessel, and the four-necked flask is equipped with a stirring device, a thermometer, and ensures that the bottle is clean and free of impurities; then prepare the raw materials Components:
[0028] (1) adopt solvent method earlier with the adipic acid of 20 parts, the isophthalic acid of 25 parts, the E-44 epoxy resin of 5 par...
Embodiment 2
[0032] An epoxy-modified water-based polyester resin, characterized in that it comprises the following components by weight: 22 parts of adipic acid, 27 parts of isophthalic acid, 7 parts of E-44 epoxy resin, trimethylolpropane 17 parts, 27 parts of dimethylol propionic acid (DMPA), 0.3 parts of monobutyl tin oxide (esterification catalyst), 12 parts of butyl glycol ether (BCS), 8 parts of propylene glycol methyl ether, N, N-di 3 parts of methyl ethanolamine (neutralizing agent).
[0033] The preparation method of the above-mentioned epoxy-modified water-based polyester resin comprises the following steps: first prepare a four-necked flask as a reaction vessel, and the four-necked flask is equipped with a stirring device, a thermometer, and ensures that the bottle is clean and free of impurities; then prepare the raw materials Components:
[0034] (1) adopt solvent method earlier with the adipic acid of 22 parts, the isophthalic acid of 27 parts, the E-44 epoxy resin of 7 par...
Embodiment 3
[0038]An epoxy-modified water-based polyester resin, characterized in that it comprises the following components by weight: 24 parts of adipic acid, 29 parts of isophthalic acid, 9 parts of E-44 epoxy resin, trimethylolpropane 17 parts, 28 parts of dimethylol propionic acid (DMPA), 0.3 parts of monobutyl tin oxide (esterification catalyst), 14 parts of butyl glycol ether (BCS), 10 parts of propylene glycol methyl ether, N, N-di 5 parts of methyl ethanolamine (neutralizing agent).
[0039] The preparation method of the above-mentioned epoxy-modified water-based polyester resin comprises the following steps: first prepare a four-necked flask as a reaction vessel, and the four-necked flask is equipped with a stirring device, a thermometer, and ensures that the bottle is clean and free of impurities; then prepare the raw materials Components:
[0040] (1) adopt solvent method earlier with the adipic acid of 24 parts, the isophthalic acid of 29 parts, the E-44 epoxy resin of 9 par...
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