A NOVEL PHOTOCHROMIC ARTICLE AND A PROCESS FOR MAKING A NOVEL PHOTOCHROMIC ARTICLE

摘要

A process for making a photochromic article such as a lens by reacting a liquid reaction composition confined in a mold to an intermediate state of hardness; freeing the composition from the mold and subjecting the composition to a further curing step to substantially fully react the reaction composition and form a solid article; then contacting the solid article with a photochromic moiety to imbibe the photochromic moiety in at least a surface portion of the article.