Inventors:
Douglas S. Cinoman - Douglassville PA, US
Andrew T. Daly - Sinking Spring PA, US
Gordon L. Tullos - Reading PA, US
Assignee:
Rohm and Haas Company - Philadelphia PA
International Classification:
C08G 63/692
US Classification:
428458, 525167, 525437, 524500, 524904, 428480
Abstract:
The present invention provides storage stable powder compositions comprising one or more carboxylic acid or anhydride functional, phosphorus-containing polyester chosen from aromatic polyesters having an acid number of 15 or higher mg KOH/g polyester, aliphatic polyesters having an acid number of 20 or higher mg KOH/g polyester. The acid functional, phosphorus-containing polyester comprises the reaction product of one or more polyacid, one or more phosphorus-containing acid or salt thereof and one or more polyol. Preferably, the one or more polyol reactant contains no β-hydrogen such as, for example, neopentyl glycol (NPG). The acid functional, phosphorus-containing polyester may comprise all or part of a binder powder composition, such as a coating powder, or it may comprise an additive thereto that imparts improved pigment wetting and corrosion resistance to a binder composition.