Patent ID: 8487051

Claim:
A millbase, paint, coating, or ink which comprises a particulate solid, a film-forming resin or polymerizable precursor to a film-forming resin, a vehicle in which said particulate solid is dispersed, and a polyurethane dispersant, wherein said polyurethane dispersant comprises a polyurethane backbone and attached solvent-solubilizing polyether chains of poly(C 2-4 -alkylene oxide) or mixtures of polyether chains of poly(C 2-4 -alkylene oxide) and polyester chains, and optionally one or more chain terminators; further comprising a nitrogen in a non-reactive amine (non-reactive with respect to isocyanates) laterally attached to the polyurethane backbone such that said nitrogen atom is separated by at least two atoms from the closest atom on the backbone and wherein the non-reactive amine is derived from the chemical group consisting of N,N-bis(2-hydroxyethyl)isonicotinamide; 1,1′-{[3-(dimethylamino)-propyl]imino}bis-2-propanol; or the compound formed from the Michael addition of dimethylaminopropylamine and 2-hydroxyethyl acrylate and wherein said non-reactive amine is a tertiary amine, a quaternary ammonium salt, or combinations thereof and wherein on average each polyurethane dispersant molecule has at least one reactive carbon to carbon double bond in either the backbone, the solvent solubilizing chains, the chain terminators, or combinations thereof.