LATENT CROSS-LINKING AQUEOUS DISPERSIONS CONTAINING A POLYURETHANE

摘要

Latent-crosslinking aqueous polyurethane dispersions comprisingI) a disperse phase (P.I) comprisingIa) a polyurethane (Ia) which carries carbodiimide groups in addition to hydrophilic groups which make it dispersible in water but carries essentially no carboxyl groups orIb) a physical mixture ofIbi) a polyurethane (Ibi) which carries hydrophilic groups which make it dispersible in water but carries essentially no carbodiimide or carboxyl groups andIbii) a carbodiimide (Ibii) which carries essentially no hydrophilic groups which make it dispersible in water, andII) a disperse phase (P.II) comprising another polymer (II) which carries carboxyl groups and essentially no carbodiimide groups.