Patent ID: 9580540
Date: 2017-02-28
CPC Classifications: A61L,C08G,C09J

Claim:
1. A method for closing, bonding, adhering or covering cell tissue comprising applying a polyurea/polyurethane system comprising an isocyanate functional prepolymer as a component A) obtained by reacting a hydroxy amino polymer as component B), and wherein the equivalent molar mass of a structure shown in formula I does not exceed the value of 18900 g/mol, potentially organic fillers, which may have a viscosity measured according to DIN 53019 at 23° C. in the range of 10 to 6000 mPa, as a component C), a reaction product of the isocyanate functional prepolymer according to component A) with hydroxy amino functional compounds according to component B), and/or organic fullers according to component C) potentially as component D), and optionally water and/or a tertiary amine as a component E), wherein the hydroxy amino polymer is obtained by: a) reacting an H functional starter compound bearing at least one Zerewitinoff active H atom with an unsaturated, cyclical carboxylic acid anhydride and at least one alkylene oxide compound for obtaining a prepolymer bearing hydroxyl groups, b) adding a primary amine and/or an ammonia to the double bond(s) of the prepolymer bearing hydroxyl groups obtained according to step a) for obtaining the hydroxy amino polymer, wherein the ratio of added amino groups to hydroxyl groups in a hydroxy amino polymer is at least 0.6.