Polyester resin as well as preparation method and application
A polyester resin and esterification technology, applied in the field of polyester resin, can solve problems such as restricted development, and achieve the effects of avoiding pollution, good storage, and optimizing conditions
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Embodiment 1
[0031] Esterification stage: Add 1.1183 mol of terephthalic acid, 1.0000 mol of isophthalic acid, 0.5649 mol of 3-hydroxypropionic acid, and 1.9170 mol of ethylene glycol into the three-necked flask reaction vessel under the condition of stirring rate of 100 R / min , neopentyl glycol 1.0486mol, tetrabutyl titanate 0.00006mol, zinc acetate 0.0005mol, heated to 180°C within 4 hours, and kept the temperature for 1.5 hours until the mixed solution in the reactor became clear and the outflow of by-products reached the theoretical level. When the by-product is more than 90%, enter the normal pressure reaction stage.
[0032] Atmospheric pressure reaction stage: adjust the stirring rate to 60R / min, add 0.0002 mol of antimony trioxide and 0.0006 mol of triphenyl phosphite to the reactor, and maintain the reaction temperature at 210°C for 15 minutes to make antimony trioxide and phosphorous acid After the triphenyl ester is mixed evenly, it enters the polycondensation stage.
[003...
Embodiment 2
[0036] Esterification stage: Add 1.1183 mol of terephthalic acid, 1.0000 mol of isophthalic acid, 0.5649 mol of 3-hydroxypropionic acid, and 1.9170 mol of ethylene glycol into the three-necked flask reactor under the condition of stirring rate of 90 R / min , 1.0486mol of 1, 2-propanediol, 0.00006mol of tetrabutyl titanate, 0.0005mol of zinc acetate, heated to 190°C within 4 hours, and kept for 1 hour until the mixed solution in the reactor became clear and the outflow of by-products reached the theoretical level. When the by-product is more than 90%, enter the normal pressure reaction stage.
[0037] Atmospheric pressure reaction stage: adjust the stirring rate to 70R / min, add 0.0002mol of antimony trioxide and 0.0006mol of triphenyl phosphite to the reaction kettle, and maintain the reaction temperature at 220°C for 10min to make antimony trioxide and phosphorous acid After the triphenyl ester is mixed evenly, it enters the polycondensation stage.
[0038] Polycondensat...
Embodiment 3
[0041] Esterification stage: Add 1.1183 mol of terephthalic acid, 1.0000 mol of isophthalic acid, 0.8972 mol of 3-hydroxypropionic acid, and 1.9170 mol of ethylene glycol into the three-necked flask reactor under the condition of stirring rate of 110 R / min , neopentyl glycol 1.0486mol, tetrabutyl titanate 0.00006mol, zinc acetate 0.0005mol, heated up to 200°C within 4 hours, and kept the temperature for 1.5 hours until the mixed solution in the reactor became clear and the outflow of by-products reached the theoretical level. When the by-product is more than 90%, enter the normal pressure reaction stage.
[0042] Atmospheric pressure reaction stage: adjust the stirring rate to 50R / min, add 0.0002mol of antimony trioxide and 0.0006mol of triphenyl phosphite to the reactor, and maintain the reaction temperature at 200°C for 10min to make antimony trioxide and phosphorous acid After the triphenyl ester is mixed evenly, it enters the polycondensation stage.
[0043] Polycon...
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