Method of preparing a shaped article having a photochromic coating thereon
AssigneePPG Industries Ohio, Inc.
InventorRobin L. Hunt
Life of this patent
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Abstract
A method of preparing a shaped article having a photochromic coating thereon, and curable photochromic powder coating compositions are described. The method includes: applying at least one curable powder coating composition to at least a portion of the interior of a mold, e.g., a lens mold, wherein at least one of the applied powder coating compositions includes a photochromic amount of photochromic material; curing at least partially the applied photochromic powder coating; charging a polymerizable organic casting composition into the mold; polymerizing the casting composition; and removing a shaped article having a photochromic coating on at least a portion of its surface from the mold.
Claims15
A method of preparing a shaped article having a photochromic coating thereon comprising:
- (a) applying at least one curable powder coating composition to at least a portion of the interior of a mold having defined interior surfaces, wherein at least one of said applied powder coating compositions comprises a photochromic amount of photochromic material;
- (b) curing at least partially said applied powder coating composition;
- (c) charging a polymerizable organic casting composition into said mold;
- (d) polymerizing said polymerizable organic casting composition;
- and
- (e) removing from said mold a shaped article having a photochromic coating on at least a portion of a surface of said shaped article.
Dependencies are inferred from the claim text.