Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Physical dimension specified
Reexamination Certificate
2005-02-15
2005-02-15
Jackson, Monique R. (Department: 1773)
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Physical dimension specified
C428S334000, C428S337000, C428S409000, C428S412000, C428S413000, C428S447000, C428S522000, C427S487000, C427S508000, C427S515000
Reexamination Certificate
active
06855415
ABSTRACT:
A product and a method for producing a product consisting of a thermoplastic substrate having a cured coating thereon. The coating consists of the ultra-violet radiation cured product of a brominated epoxy acrylate oligomer, a polyfunctional acrylate monomer, a silicone hard coat and a photoinitiator. The coated thermoplastic substrate has a low birefringence (<25 nm), and a low delta refractive index between the coating and thermoplastic substrate and a smooth upper surface having a gloss of at least 90% and a surface roughness of about 10.0 μm or less. In order to obtain such a product, the thermoplastic substrate must be prepared by first producing a substrate having a smooth lower surface and a textured upper surface to which is applied the curable coating. A thermoplastic substrate, particularly an aromatic polycarbonate substrate, is prepared by passing a heated substrate between a pair of rolls wherein the upper roll has a textured surface and the lower roll has a smooth polished surface.
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General Electric Company
Jackson Monique R.
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