Enhanced abrasion resistance radiation curable coating for substrates
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United States of America Patent
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Jun 29, 1999
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N/A
app pub date -
Jan 7, 1997
filing date -
Nov 10, 1994
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Abstract
An abrasion resistant, radiation or heat curable dual composition is applied to a polymer substrate, such as an opthamlic lens. An abrasion enhancement layer is deposited on a surface of the substrate. The abrasion enhancement layer has a modulus of M.sub.1 and a Shore A value of 50 or less. A top coating is deposited on the abrasion enhancement layer. It has a modulus of M.sub.2 that is greater than M.sub.1. The top coating has an abrasion resistance Bayer Haze Gain ratio of 1.0 or greater.
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