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Method for producing polycyclohexylene dimethylene terephthalate resin excellent in color and polycyclohexylene dimethylene terephthalate resin produced thereby
Method for producing polycyclohexylene dimethylene terephthalate resin excellent in color and polycyclohexylene dimethylene terephthalate resin produced thereby
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机译:制备颜色优异的聚环己二甲基对苯二甲酸二甲酯的方法和由此生产的聚环己二甲基对苯二甲酸丙二酯
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摘要
A preparation method of a polycyclohexylenedimethylene terephthalate resin according to the present invention includes the steps of injecting a titanium compound and a germanium compound as catalysts to a mixture of a diol compound and dicarboxylic acid under stirring and performing esterification reaction and polycondensation reaction, in which the titanium compound is injected in a titanium atom content of 20 ppm or less, based on the weight of the final polycyclohexylenedimethylene terephthalate resin. The preparation method of the polycyclohexylenedimethylene terephthalate resin according to the present invention can be used to prepare a polycyclohexylenedimethylene terephthalate resin that has excellent degree of polymerization, color and light reflectance and has remarkably improved heat stability, and it is suitable to use the polycyclohexylenedimethylene terephthalate resin according to the present invention as an LED housing material.
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