Abstract: The present invention provides an aqueous polyurethane dispersion (PUD) comprising an amorphous polyester having a glass transition temperature (Tg) as determined by differential scanning calorimetry of less than ?30° C.; wherein the aqueous polyurethane dispersion (PUD) has a glass transition temperature (Tg) as determined by differential scanning calorimetry (DSC) of 0° C. to 20° C. and a hard block content of greater than 50%.

Abstract: The present invention provides an aqueous polyurethane dispersion (PUD) comprising an amorphous polyester having a glass transition temperature (Tg) as determined by differential scanning calorimetry of less than ?30° C.; wherein the aqueous polyurethane dispersion (PUD) has a glass transition temperature (Tg) as determined by differential scanning calorimetry (DSC) of 0° C. to 20° C. and a hard block content of greater than 50%.

Abstract: The present invention provides an aqueous polyurethane dispersion (PUD) comprising an amorphous polyester having a glass transition temperature (Tg) as determined by differential scanning calorimetry of less than ?30° C.; wherein the aqueous polyurethane dispersion (PUD) has a glass transition temperature (Tg) as determined by differential scanning calorimetry (DSC) of 0° C. to 20° C. and a hard block content of greater than 50%.

Abstract: The present invention provides an aqueous polyurethane dispersion (PUD) comprising an amorphous polyester having a glass transition temperature (Tg) as determined by differential scanning calorimetry of less than ?30° C.; wherein the aqueous polyurethane dispersion (PUD) has a glass transition temperature (Tg) as determined by differential scanning calorimetry (DSC) of 0° C. to 20° C. and a hard block content of greater than 50%.

Abstract: The invention relates to new, hydrolysis-stable, aqueous polyurethane-polyurea dispersions based on polycarbonate-polyols, to a process for preparing them and to their use in coating materials.

Abstract: The invention relates to new, hydrolysis-stable, aqueous polyurethane-polyurea dispersions based on polycarbonate-polyols, to a process for preparing them and to their use in coating materials.

Abstract: A polyurethane dispersion prepared by: A) forming an isocyanate functional prepolymer containing acid functional groups by reacting a first polyol, a second polyol having carboxylic acid functionality and a polyisocyanate; and optionally B) reacting an amino acid with the prepolymer. The dispersion is used in coating compositions that include (i) the above-described polyurethane dispersion and (ii) a cross-linking agent for the polyurethane which does not contain free isocyanate groups. The coating composition is used to coat substrates by: (a) mixing components (i) and (ii); and (b) applying the mixture to a surface of the substrate.

Abstract: An aqueous polyurethane dispersion (PUD) that includes an isocyanate functional prepolymer containing acid functional groups prepared by reacting a polyol containing carboxylic acid functionality and a polyisocyanate. The polyol has a molecular weight (Mn) of from 100 to 10,000, an acid number of 25 to 500 mg KOH/g and a hydroxyl number of from 25 to 500 mg KOH/g. The PUD can be used in coating compositions that also contain a cross-linking agent. The coating compositions can be used coat substrates by applying a mixture of the PUD and cross-linking agent to a surface of the substrates.