Post-extended anionic polyurethane dispersion

Details Post-extended anionic polyurethane dispersion Post-extended anionic polyurethane dispersion

C - Chemistry, Metallurgy

08

L

C08L 75/04 (2006.01) C08G 18/08 (2006.01) C08G 18/83 (2006.01) C09D 163/00 (2006.01) C09D 175/04 (2006.01) C09D 175/06 (2006.01)

Patent

CA 2083058

The present invention is directed to an aqueous anionic polyurethane dispersion, obtainable by a) dispersing a polyurethane resin, having carboxylic said groups, in water in the presence of a tertiary amine and b) reacting the carboxylic acid groups oh the polyurethane resin with an organic compound having at least two oxirane groups, a basecoat containing said dispersions, a method of coating a substrate with said basecoat and a coated substrate,

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