Radiation-curable aqueous polyurethane emulsions

Details Radiation-curable aqueous polyurethane emulsions Radiation-curable aqueous polyurethane emulsions

C - Chemistry, Metallurgy

08

G

C08G 18/30 (2006.01) C08G 18/12 (2006.01) C08G 18/67 (2006.01) C09D 175/14 (2006.01) C09D 175/16 (2006.01)

Patent

CA 2159265

A water-dispersable, radiation-curable polyurethane, essentially comprises a) organic polyisocyanates, b) polyesterpolyols, c) if required, polyols differing from b) d) compounds having at least one group reactive toward iso- cyanate and at least one carboxyl or carboxylate group, e) compounds having at least one group reactive toward iso- cyanate and at least one copolymerizable unsaturated group and f) if required, compounds differing from a) to e) and having at least one group reactive toward isocyanate, the K value of the polyurethane being less than 40 and the con- tent of copolymerizable unsaturated groups being from 0.01 to 0.4 mol/100 g of polyurethane (solid) and at least the components a), b) and e) being reacted in one stage in the preparation of the polyurethane.

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