Fast curing compositions

Details Fast curing compositions Fast curing compositions

C - Chemistry, Metallurgy

08

G

C08G 18/00 (2006.01) C08G 18/10 (2006.01) C08G 18/48 (2006.01) C08G 18/76 (2006.01) C08G 18/77 (2006.01) C09J 175/04 (2006.01)

Patent

CA 2499447

Fast curing surgical adhesives and sealants contain an NCO-terminated hydrophilic urethane prepolymer derived from an aromatic diisocyanate and a polyol. Substantially all the aromatic diisocyanate used to prepare the NCO- terminated hydrophilic urethane prepolymer is in the para form. Optionally, the aromatic diisocyanate is substituted with at least one electron withdrawing group, such as, for example, a fluorine group.

La présente invention concerne des colles et produits de scellement chirurgicaux durcissant rapidement. Ils contiennent un prépolymère hydrophile d'uréthane à terminaison NCO dérivé d'un diisocyanate aromatique et d'un polyol. La quasi-totalité du diisocyanate aromatique utilisé pour élaborer le prépolymère hydrophile d'uréthane à terminaison NCO se trouve sous la forme para. Le diisocyanate aromatique est éventuellement substitué par au moins un groupe soustracteur d'électrons tel qu'un groupe fluor.

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