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
2006-01-10
2006-01-10
Bissett, Melanie (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S131000, C528S080000, C428S423100, C428S425800, C427S385500
Reexamination Certificate
active
06984693
ABSTRACT:
A two-stage cure coating composition of a binder and a crosslinking component; the binder comprises and acrylic polymer having a weight average molecular weight of 3,000 to 50,000 and hydroxyl moieties in the range of 7.0 to 40.0 weight; wherein at least 40.0 weight percent of the hydroxyl moieties are provided by hydroxy butyl acrylate; the crosslinking component comprises an organic polyisocyanate; and the first stage curing of a finish of the composition forms a water spot free finish within 90 minutes of application and the composition has a pot life of less than a 2 second rise in Zahn cup viscosity in 150 minutes; and the invention also is directed to a method of producing a finish on a substrate utilizing the coating composition.
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Adams James Lamonte
Devlin Brian Patrick
Lewin Laura Ann
Paquet, Jr. Donald Albert
Bissett Melanie
Deshmukh Sudhir G.
E. I. du Pont de Nemours and Company
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