C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/38 (2006.01) C08G 18/42 (2006.01) C08G 18/48 (2006.01)
Patent
CA 2605497
Thermoplastic polyurethanes having an alternating sequence of hard and soft segments in which a nanostructured polyhedral oligosilsesquioxane diol is used as a chain extender to form a crystalline hard segment constituting SMPs. The polyurethanes are formed by reacting a polyol, a chain extender dihydroxyl- terminated polyhedral oligosilsesquioxane and a diisocyanate. The polyurethanes have multiple applications including for example, implants for human health care, drug delivery matrices, superabsorbant hydrogels, coatings, adhesives, temperature and moisture sensors, etc.
L'invention concerne des polyuréthanes thermoplastiques comportant une séquence alternée de segments durs et de segments mous, contenant un oligosilsequioxane-diol polyédrique nanostructuré servant d'allongeur de chaîne afin de former un segment dur cristallin constituant des PMF. Ces polyuréthanes sont formés par réaction d'un polyol, d'un allongeur de chaîne oligosilsesquioxane polyédrique à terminaison dihydroxyle, et d'un diisocyanate. Ces polyuréthanes ont des applications multiples, comprenant notamment des implants médicaux destinés à des patients humains, des matrices de diffusion de médicaments, des hydrogels superabsorbants, des revêtements, des adhésifs, des capteurs de température et d'humidité etc.
Ge Qing
Liu Changdeng
Mather Patrick T.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
University Of Connecticut
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