Język Polski
English
Published
: 2022-09-18
The kinetic modeling of consecutive reactions in the controlled process of step-growth polyaddition of diisocyanates to polyols
Abstract
The REAKTOR subroutine verified in earlier studies [34], was used to simulate several polyaddition reactions between diisocyanates and polyols 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 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 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 a PUR of maximum possible M.
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Zasady cytowania
Król, P., & Pilch-Pitera, B. (2022). The kinetic modeling of consecutive reactions in the controlled process of step-growth polyaddition of diisocyanates to polyols. Polimery, 47(2), 77–84. Retrieved from https://ichp.vot.pl/index.php/p/article/view/1946
