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METHOD OF PRODUCING POLYMERS USING 1,6-HEXANEDIOL CONTAINING LESS THAN 500 PPM OF ALDEHYDE
METHOD OF PRODUCING POLYMERS USING 1,6-HEXANEDIOL CONTAINING LESS THAN 500 PPM OF ALDEHYDE
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机译:含少于500 PPM乙醛的1,6-己二醇生产聚合物的方法
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摘要
FIELD: chemistry.;SUBSTANCE: disclosed is a method of producing a polymer, which includes reacting 1,6-hexanediol with dicarboxylic acids or diisocyanates in the presence of at least one catalyst, wherein the 1,6-hexanediol used is 1,6-hexanediol which, after production thereof by hydrogenation, is subjected to distillation at least once, where the molar ratio of oxygen to 1,6-hexanediol is less than 1:100, and which, during the distillation process, contains ≤5 ppm of catalytically active components and less than 500 ppm of aldehyde.;EFFECT: obtaining polymers having a colour index of less than 150 units APHA turbidity.;8 cl, 6 ex
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机译:技术领域:公开了一种制备聚合物的方法,该方法包括使1,6-己二醇与二羧酸或二异氰酸酯在至少一种催化剂的存在下反应,其中使用的1,6-己二醇为1,6。 -己二醇,在通过氢化生产后,至少要蒸馏一次,其中氧与1,6-己二醇的摩尔比小于1:100,并且在蒸馏过程中,其含量≤5ppm催化活性组分和少于500 ppm的醛;效果:获得颜色指数小于150单位APHA浊度的聚合物; 8 cl,6 ex
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