Summaries
The chemistry of polyurethanes, polyureas, polyurethane dispersions and their reaction partners such as oxazolidines continues to grow judging by the number of patent applications and papers published. The application areas of these products also continues to increase. This paper presents a review of past and current technology including examples of the synthesis of the above species. Hybridisation of these systems is in vogue and this trend will continue. Some chemical synthesis pathways are suggested for the modification of the above-mentioned species to enhance properties. A few predictions are made as to what the future might hold. Fast and slow reacting systems are discussed along with their uses in coating structural steelwork, floors and other substrates.
Résumé
La chimie des polyuréthanes, des polyuréthanes en dispersion et de leurs réactifs tels que les oxazolidines va toujours croissant à en juger par le taux des demandes de brevets et des articles publiés. Le cadre d’application de ces prodits continue également à s’accroître. Cet article présente un examen de la technologie du passé et de nos jours et comprend des exemples des synthèses des espèces ci-dessus. L’hybridation de ces systèmes est à la mode et cette tendance va continuer. Des voies de synthèse chimique sont suggérées pour faciliter la modification des espèces ci-dessus afin d’amméliorer leurs propriétés. On a fait quelques prévisions en ce qui concerne l’avenir. Des systèmes à réaction vite et à réaction lente sont discutés aussi bien que l’utilisation de ceux-ci dans le cadre du revêtement des tôleries de construction, des planchers et d’autres substrats.
Zusammenfassung
Die Chemie, die mit Polyurethanen. Polyurethandispersionen und Polyharnstoffen und ihren Reaktionspartnern wie Oxazolidinen durchgeführt wird, wächst ständig zu, gemessen an der Anzahl der Patentanträge und der Forschungsarbeiten. Die Anwendungsgebiete dieser Stoffe werden auch stets größer. Diese Arbeit bewertet die Technologien der Vergangenheit und der Gegenwart in diesem Gebiet. Die Hybridisierung der verschiedenen Systeme ist im Moment sehr in Mode, und dieser Trend wird sich weiter fortsetzen. Einige Syntheserouten für die Modifizierung und Verbesserung der obengenannten Stoffe werden vorgeschlagen, und wir machen ein paar Vorhersagen für die Zukunft. Wir beschreiben schnell und langsam reagierende Systeme und ihre Verwendung in Anstrichfarben für Baustahl. Fußböden und andere Substrate.
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Howarth, G. Polyurethanes, polyurethane dispersions and polyureas: Past, present and future. Surface Coatings International Part B: Coatings Transactions 86, 111–118 (2003). https://doi.org/10.1007/BF02699621
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DOI: https://doi.org/10.1007/BF02699621