Patent ID: 7220814

Claim:
Polyisocyanates comprising at least one of I) or ii) i) nonionically hydrophilicizing groups based on polyalkylene oxide polyethers containing at least 30% by weight ethylene oxide units, ii) ionically or potentially ionically hydrophilicizing groups which on interaction with water enter into a pH-dependent dissociation equilibrium and are therefore neutral or positively or negatively charged depending on pH, and iii) at least one structural unit of the formula (1) in which X is an electron-withdrawing group, R 1 , R 2 independently of one another are a hydrogen atom, a saturated or unsaturated aliphatic or cycloaliphatic radical or an optionally substituted aromatic or araliphatic radical and each contain up to 12 carbon atoms and n is an integer from 0 to 5.