caa a22 4500 465786804 CHVBK 20180323112011.0 cr unu---uuuuu 170327e19900701xx s 000 0 eng 10.1007/BF00298317 doi (NATIONALLICENCE)springer-10.1007/BF00298317 Reaction of a diepoxide with a diisocyanate in bulk [Elektronische Daten] I. Use of a tertiary amine catalyst [D. Caille, J. Pascault, L. Tighzert] Summary: Reactions between a diepoxide and a diisocyanate can lead to copolymers having two kinds of heterocycles in their chemical structure: isocyanurate rings which are the result of the reaction of three isocyanate functions with themselves and oxazolidone rings which are the result of the reaction of an epoxy function with an isocyanate function. Differential Scanning Calorimetry (DSC) and Fourier Transform Infrared Spectroscopy (FTIR) were used in order to understand the influence of a catalyst, like a tertiary amine, on the reaction mechanism of polymer formation. We also observed the influence of the stoechiometric ratio between the diisocyanate and the diepoxide on the glass-transition temperature of the obtained network. We have identified the nature of the exotherms observed in DSC experiments and proposed an assignment of the different peaks observed in the FTIR spectra. We showed that the amount of catalyst and the stoechiometric ratio between the diisocyanate and the diepoxide strongly influence the structure of the final polymer and its thermal characteristics such as the glass-transition temperature. Springer-Verlag, 1990 Caille D. Laboratoire des Matériaux Macromoléculaires, INSA de Lyon, Bâtiment 403, U.R.A. 507,. 20, avenue Albert Einstein, F-69621, Villeurbanne Cédex, France aut Pascault J. Laboratoire des Matériaux Macromoléculaires, INSA de Lyon, Bâtiment 403, U.R.A. 507,. 20, avenue Albert Einstein, F-69621, Villeurbanne Cédex, France aut Tighzert L. Laboratoire des Matériaux Macromoléculaires, INSA de Lyon, Bâtiment 403, U.R.A. 507,. 20, avenue Albert Einstein, F-69621, Villeurbanne Cédex, France aut Polymer Bulletin Springer-Verlag 24/1(1990-07-01), 23-30 0170-0839 24:1<23 1990 24 289 https://doi.org/10.1007/BF00298317 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00298317 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Caille D. Laboratoire des Matériaux Macromoléculaires, INSA de Lyon, Bâtiment 403, U.R.A. 507,. 20, avenue Albert Einstein, F-69621, Villeurbanne Cédex, France aut NATIONALLICENCE 700 1- Pascault J. Laboratoire des Matériaux Macromoléculaires, INSA de Lyon, Bâtiment 403, U.R.A. 507,. 20, avenue Albert Einstein, F-69621, Villeurbanne Cédex, France aut NATIONALLICENCE 700 1- Tighzert L. Laboratoire des Matériaux Macromoléculaires, INSA de Lyon, Bâtiment 403, U.R.A. 507,. 20, avenue Albert Einstein, F-69621, Villeurbanne Cédex, France aut NATIONALLICENCE 773 0- Polymer Bulletin Springer-Verlag 24/1(1990-07-01), 23-30 0170-0839 24:1<23 1990 24 289 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 465786677 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer