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首页> 外文期刊>Polimery >The Kinetic Modeing of Consecutive Reactions in the Controlled Process of Step-Growth Polyaddition of Diisocyanates to Polyols
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The Kinetic Modeing of Consecutive Reactions in the Controlled Process of Step-Growth Polyaddition of Diisocyanates to Polyols

机译：异氰酸酯逐步多元加成多元醇的受控过程中连续反应的动力学模型

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摘要

The REAKTOR subroutine verified in earlier studies [34], was used to simulate several polyaddition reactions between dissocyanates and polyolis yielding linear polyurethanes (PUR) (eqn.2.) Optimum reaction time and temperature were established for the step-growth polyadditions of toluylene diisocyanate (TDI) to 1,4-butanediol or to oligooxyethylene glycols (M = 200, 600 and 1000), which were run with either the macrodiol or TDI used in excess. The M_n of PUR and the number of steps were studied in relation to initial reactants concentrations and mole ratios and substitutent type In TDI diisocyanates. The growth of M_n of PUR was monitored in the individual steps of the polyaddition reactions involving various macrodiols (Figs. 6-8). Temperature simulations allowed to establish the optimum reaction time to yield of PUR of maximum possible M_n.
机译：REAKTOR子程序已在较早的研究中验证[34]，用于模拟二异氰酸酯和多元醇之间的几种加聚反应，生成线性聚氨酯（PUR）（等式2）。确定了甲苯二异氰酸酯逐步加成的最佳反应时间和温度。 （TDI）转化为1,4-丁二醇或低聚氧乙二醇（M = 200、600和1000），它们与大分子二醇或过量使用的TDI一起运行。研究了PUR的M_n和步骤数与TDI二异氰酸酯中初始反应物浓度，摩尔比和取代基类型的关系。在涉及各种大分子二醇的加聚反应的各个步骤中监测了PUR M_n的生长（图6-8）。温度模拟允许建立最佳反应时间，以产生最大可能的M_n的PUR。

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