Tinting optical substrates
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United States of America Patent
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Oct 25, 2011
Grant Date -
Oct 7, 2010
app pub date -
Jun 17, 2010
filing date -
Mar 3, 2003
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Abstract
The present invention provides a method for tinting an optical substrate. The method includes the steps of applying a coating composition containing: a polymerisable monomer having a polyoxyalkylene backbone containing at least four contiguous oxyalkylene units, and an abrasion resistant agent and/or a high crosslinking polymerisable monomer to the optical substrate, polymerising the coating composition to form an abrasion resistant coating layer, and introducing a tinting compound into the coating layer to thereby tint the optical substrate. The invention also provides a coating composition and an optical substrate that is tinted according to the method of the invention.
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