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Generalization of kinetics in the reaction of isocyanates and polyols for modeling a process‐yielding linear polyurethane, 1
Author(s) -
Król Piotr
Publication year - 1995
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1995.070570609
Subject(s) - polyurethane , reaction rate constant , kinetics , polymer chemistry , isocyanate , reaction rate , carbamate , catalysis , chemistry , thermodynamics , constant (computer programming) , kinetic energy , generalization , process (computing) , materials science , organic chemistry , mathematics , computer science , physics , quantum mechanics , mathematical analysis , operating system , programming language
A general kinetic reaction network has been suggested for the gradual chian growth polyaddition process for the synthesis of linear chain polyurethane. Based on the results from the kinetic investigation of the reactions of model aromatic/aliphatic isocyanates and alcohols and hydroxyethers, some methods were set forth to provide rate‐constant values for the reactions included in this network. Model equations were derived from the collision theory, giving dependencies of reaction rate constant values on the molecular weights of the reacting substances. It was found that it was the structure of the reactants that had the most significant effect on the rate of carbamate‐yielding reactions; the effects derived from temperature, catalyst, and size of reacting molecules follow. © 1995 John Wiley & Sons, Inc.