Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2006-06-07
2008-10-07
Sellers, Robert (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S113000, C525S125000, C525S131000, C525S176000, C525S187000, C525S407000, C525S409000, C525S438000, C525S453000, C525S454000, C528S068000, C528S085000
Reexamination Certificate
active
07432333
ABSTRACT:
Low-cure powder coating compositions are disclosed, comprising at least one epoxy-containing resin and/or at least one siloxane-containing resin, and at least one material having the structurewherein R1is an organic radical having 6 to 25 carbon atoms; each R2is independently a multivalent hydrocarbon group having 1 to 20 carbon atoms; Y iseach R3and R4are independently alkyl or aryl groups having 1 to 8 carbon atoms; each Z is independently oxygen or nitrogen; R5is absent when Z is oxygen and R5is hydrogen, an alkyl or aryl group having 1 to 20 carbon atoms, or (Y)a—R2— when Z is nitrogen; a and b are integers; a is at least 1; b is 1 to 3; and (b) at least one epoxy-containing resin and/or at least one siloxane-containing resin. The material can optionally be reacted with an acidic hydrogen-containing compound. Some compositions are curable without using crosslinking agents or accelerators. Methods for coating a substrate using these compositions, the coated substrates, and additional catalysts useful for the same purpose are also disclosed.
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Ambrose Ronald R.
Chasser Anthony M.
Duffy Shawn P.
Meyers Diane R.
Palladino Donald R.
PPG Industries Ohio Inc.
Sellers Robert
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