POLYCARBONATE RESIN WITH IMPROVED BLUE-CUT AND NEUTRAL COLOR
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United States of America Patent
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Issued Date -
Nov 14, 2019
app pub date -
Sep 20, 2017
filing date -
Sep 20, 2016
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Abstract
Embodiments of the disclosure relate to color additives and color formulations for offsetting or reducing yellowness index of blue-cut lenses. The color additives and color formulations are selected to provide color neutrality and color homogeneity for blue-cut lenses. Resins formulations comprising at least two color-balancing color additives are also disclosed.
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