Preparation of color sizing vector resin
A technology of carrier resin and color paste, which is applied in the field of modification of unsaturated polyester resin, can solve the problems of poor coloring power, high price, poor flexibility of pigment paste, etc., and achieve good coloring power, low price, and improved coloring power Effect
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Embodiment 1
[0022] In the first step, 114.5Kg of diethylene glycol, 16.7Kg of ethylene glycol, 39.2Kg of maleic anhydride, and 88.8Kg of phthalic anhydride were put into the reactor, and the esterification reaction was carried out at 160°C for 170 minutes;
[0023] In the second step, the esterification reaction was carried out at 170° C. for 120 minutes;
[0024] In the third step, the esterification reaction was carried out at 200° C. for 180 minutes;
[0025] The 4th step, after esterification, measure the acid value;
[0026] The fifth step is to cool down to 115°C, filter and package, and make the finished product, and take samples for full analysis.
Embodiment 2
[0028] In the first step, 186.6Kg of diethylene glycol, 27.3Kg of ethylene glycol, 58.8Kg of maleic anhydride, and 59.2Kg of phthalic anhydride were put into the reactor, and the esterification reaction was carried out at 170°C for 140 minutes;
[0029] In the second step, the esterification reaction was carried out at 180° C. for 144 minutes;
[0030] In the third step, the esterification reaction was carried out at 190° C. for 168 minutes;
[0031] The 4th step, after esterification, measure the acid value;
[0032] The fifth step is to cool down to 115°C, filter and package, and make the finished product, and take samples for full analysis.
Embodiment 3
[0034] In the first step, 148.4Kg diethylene glycol, 21.7Kg ethylene glycol, 47Kg maleic anhydride, and 77Kg phthalic anhydride were put into the reactor, and the esterification reaction was carried out at 163°C for 166 minutes;
[0035] In the second step, the esterification reaction was carried out at 172° C. for 125 minutes;
[0036] In the third step, the esterification reaction was carried out at 195° C. for 160 minutes;
[0037] The 4th step, after esterification, measure the acid value;
[0038] The fifth step is to cool down to 115°C, filter and package, and make the finished product, and take samples for full analysis.
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