Index modified coating on polymer substrate

Details Index modified coating on polymer substrate Index modified coating on polymer substrate

2011-08-09

2011-08-09

Ortiz, Angela (Department: 1783)

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

C428S220000, C428S212000, C427S475000, C427S561000, C427S569000, C427S162000, C427S402000

Reexamination Certificate

active

07993733

ABSTRACT:
The invention includes the structure of a multilayer protective coating, which may have, among other properties, scratch resistance, UV absorption, and an effective refractive index matched to a polymer substrate such as polycarbonate. Each layer may contain multiple components consisting of organic and inorganic materials. The multilayer protective coating includes interleaved organic layers and inorganic layers. The organic layers may have 20% or more organic compounds such as SiOxCyHz. The inorganic layers may have 80% or more inorganic materials, such as SiO2, SiOxNy, and ZnO, or mixtures thereof. Each layer of the multilayer protective coating is a micro layer and may have a thickness of 5 angstroms or less in various embodiments. The multilayer protective coating may contain in the order of hundreds or thousands of micro layers, depending upon the design requirement of applications. In each micro layer, the components may have substantially continuous variations in concentration.

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