Stock material or miscellaneous articles – Composite – Of epoxy ether
Reexamination Certificate
2005-03-08
2005-03-08
Buttner, David J. (Department: 1712)
Stock material or miscellaneous articles
Composite
Of epoxy ether
C525S115000, C525S131000, C525S327300, C525S340000, C525S533000, C525S398000
Reexamination Certificate
active
06863982
ABSTRACT:
A curable film-forming composition of 5 to 95 weight percent (based on the total resin solids weight in the composition) of a crosslinking agent; 5 to 95 weight percent ot a polymer containing functional groups reactive with the crosslinking agent; and 0.01 to 15 weight percent of at least one additive selected from a reaction product of phosporous acid and: at least one diepoxide; at least one diepoxide and at least one anhydride; at least one diepoxide and at least one anhydride, chain extended with at least one diol; at least one monoepoxide and at least one anhydride, chain extended with at least one diepoxide; and mixtures thereof. The additives in the composition prevent thermal oxidation, minimizing visual effects (i.e., yellowing). A multi-component composite coating includes a base coat and a top coat which may be derived from the above curable film-forming composition.
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Barkac Karen A.
Campbell Susan A.
Humbert Kurt A.
Kania Charles M.
McQuown Stephen G.
Altman Deborah M.
Buttner David J.
Keehan Christopher
PPG Industries Ohio Inc.
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