SYSTEM AND METHOD FOR IMPROVING ADHESION AND ABRASION RESISTANCE USING A FRONT SIDE TRANSFER PROCESS TO MANUFACTURE MULTI-COATED PHOTOCHROMIC OPTICAL LENSES
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United States of America Patent
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Issued Date -
Apr 22, 2010
app pub date -
Oct 21, 2008
filing date -
Oct 21, 2008
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Abandoned
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Abstract
A novel photochromic latex formulation is provided, in one embodiment involving the addition of a polyurethane latex to a polyphasic latex, the formulation having improved adhesion qualities, in particular, adhesion onto a hard coat layer. In a preferred embodiment, the polyurethane latex is 20% by weight of the formulation. In addition, an optical article is provided having a coating including a novel photochromic latex formulation in accordance with the present invention, applied via a Front Side Transfer process.
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