Stock material or miscellaneous articles – Composite – Of epoxy ether
Reexamination Certificate
2006-10-24
2006-10-24
Feely, Michael J. (Department: 1712)
Stock material or miscellaneous articles
Composite
Of epoxy ether
C428S423100, C428S480000, C428S500000, C525S510000, C525S519000, C525S533000, C528S363000
Reexamination Certificate
active
07125606
ABSTRACT:
A crosslinking agent that is an ungelled reaction product of (a) an aminoplast resin and (b) a carboxylic acid-containing compound wherein the crosslinking agent is essentially free of reactive carboxylic acid groups and has a glass transition temperature of at least 10° C. is disclosed. Methods for preparing crosslinking agents are also disclosed. Further provided is a curable powder coating composition including a polymer having a glass transition temperature of at least 30° C. containing reactive functional groups and the present crosslinking agent; a multilayer composite coating composition and substrates coated therewith are also disclosed.
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Copending U.S. Appl. No. 10/844,282.
Chasser Anthony M.
Hu Shengkui
Kulfan Jackie L.
Feely Michael J.
Meyers Diane R.
PPG Industries Ohio Inc.
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