C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/38 (2006.01) A61F 2/06 (2006.01) C08G 18/48 (2006.01) C08G 18/61 (2006.01) C08G 18/71 (2006.01) C08G 61/08 (2006.01) C08G 65/336 (2006.01) C08J 3/00 (2006.01) C08L 65/00 (2006.01) C08L 71/02 (2006.01) A61F 2/00 (2006.01)
Patent
CA 2501643
Thermoplastic polyurethanes having an alternating sequence of hard and soft segments in which a nanostructured polyhedral oligomeric silsesquioxane 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 POSS and a diisocyanate. The polyurethanes have multiple applications including for example, important for human health care, drug delivery matrices, superabsorbant hydrogels, coatings, adhesives, temperature and moisture sensors, etc.
L'invention concerne des polyuréthannes thermoplastiques possédant une séquence alternée de segments durs et souples dans laquelle un diol silsesquioxane oligomérique polyhédral nanostructuré est utilisé en tant qu'allongeur de chaîne en vue de former un segment dur cristallin constituant les polymères à mémoire de forme (SMP). Les polyuréthannes sont formés par réaction d'un polyol, d'un POSS à terminaison dihydroxyle allongeur de chaîne et d'un diisocyanate. Les polyuréthannes ont des applications multiples telles que par exemple, des implants pour la santé humaine, des matrices d'administration de médicament, des hydrogels superabsorbants, des revêtements, des adhésifs, des capteurs de température et d'humidité, etc..
Ge Qing
Liu Changdeng
Mather Patrick T.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
University Of Connecticut
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