Synthesis and thermal crosslinking of oxazolidine‐functionalized polyurethanes |
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| Authors: | Robert Andreu Gerard Lligadas Joan Carles Ronda Marina Galià Virginia Cádiz |
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| Affiliation: | 1. Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, Campus Sescelades, Carrer Marcel.lí Domingo s/n, 43007 Tarragona, Spain;2. Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, Campus Sescelades, Carrer Marcel.lí Domingo s/n, 43007 Tarragona, SpainDepartament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, Campus Sescelades, Carrer Marcel.lí Domingo s/n, 43007 Tarragona, Spain |
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| Abstract: | A new oxazolidine derivative was obtained from phenol, 2‐amino‐2‐methylpropane‐1,3‐diol and paraformaldehyde. The reaction of this novel oxazolidine diol with phenylisocyanate lead to a urethane model compound which can be polymerized thermally by oxazolidine ring opening to give a Mannich bridge structure. Linear segmented polyurethanes were prepared by reaction of different ratios of oxazolidine diol and commercial polyethylenglycol (Mw ～ 400) with 4,4′‐methylenbis (cyclohexylisocyanate) (HMDI, 90% isomers mixture). The polyurethanes were thermally characterized and crosslinked by oxazolidine ring opening to obtain materials which showed improved thermal stability. © 2007 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 45: 4965–4973, 2007 |
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| Keywords: | crosslinking oxazolidine polyurethanes thermosets |
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