Patent ID: 6492451
Filing Date: 2002-12-10
Classification: C03C,C08F,C09D

Abstract:
A pigment-comprising formulation for coating substrates, comprising:(i) an aqueous dispersion of at least one water-insoluble polymer P which has phosphonate groups, as a binder, said polymer P having a glass transition temperature Tg in the range of âˆ’60Â° to 80Â° C., (ii) at least one inorganic pigment, (iii) optionally, one or more inorganic fillers, and (iv) at least one auxiliary, wherein water-insoluble polymer P is obtained by free-radical aqueous emulsion polymerization of ethylenically unsaturated monomers comprising: 90 to 99.9% by weight of at least one monomer a, which is selected from the group consisting of vinylaromatic monomers, the esters of acrylic acid with C1-C12-alkanols, the esters of methacrylic acid with C1-C12-alkanols, the vinyl esters of aliphatic C1-C12-monocarboxylic acids, ethylene and vinylchloride, and 0.1 to 10% by weight of at least one different monomer b of the formula (I): or a salt thereof, whereR1 is hydrogen, C1-C4-alkyl, COOH, â€”CO2-alk-OH or â€”CO2-alk-P(O)(OH)2 and R2 is hydrogen, C1-C4-alkyl, â€”CH2â€”COOH, â€”CH2â€”CO2-alk-OH or â€”CH2â€”CO2-alk-P(O)(OH)2, in which alk is C1-C4-alkylene, X is a single bond, alkylene, arylene, â€”R3â€”Zâ€”Oâ€”R4â€” or â€”R3â€”Zâ€”NHâ€”R4â€”, in which R3 is attached to the carbon of the double bond and is a single bond, alkylene or arylene, R4 is alkylene or arylene, and Z is CO or SO2.