Stock material or miscellaneous articles – Composite – Of metal
Reexamination Certificate
2007-05-02
2009-12-29
Wu, David (Department: 1796)
Stock material or miscellaneous articles
Composite
Of metal
C525S167000, C525S437000, C524S500000, C524S904000, C428S480000
Reexamination Certificate
active
07638201
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.
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Cinoman Douglas S.
Daly Andrew T.
Tullos Gordon L.
Jones, Jr. Robert
Merriam Andrew E. C.
Rohm and Haas Company
Wu David
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