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Cover Picture: Macromol. Chem. Phys. 7/2004
Author(s) -
Ubaghs Luc,
Novi Christina,
Keul Helmut,
Höcker Hartwig
Publication year - 2004
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200490019
Subject(s) - copolymer , isocyanate , polymer chemistry , monomer , reactivity (psychology) , cover (algebra) , carbonate , chemistry , polymer science , polyurethane , polymer , organic chemistry , alternative medicine , medicine , mechanical engineering , pathology , engineering
Cover: Due to thermodynamical reasons, ethylene carbonate (EC) and 1,2‐propylene carbonate (PC) are monomers which cannot be homopolymerized to polycarbonates with uniform microstructure. However, copolymerization of EC and PC with tetramethylene urea (TeU) leads to polyurethanes with randomly distributed TeU‐EC/TeU‐PC units. It was found that the reactivity of PC is significantly lower than that of EC. The properties of the polyurethanes are determined by the ratio of EC to PC which was deduced from 1 H NMR analysis. This isocyanate‐free route to polyurethanes is of ecological importance. Further details can be found in the Full Paper by L. Ubaghs, C. Novi, H. Keul, * and H. Höcker on page 888.