Temperature stable and sunlight protected photochromic articles

A photochromic article comprising:

• (a) the polymerizate of
• i. at least one monomer selected from monomers represented by the graphic formula, ##STR4## wherein R.sub.o is selected from the group consisting of hydrogen and methyl, R is selected from the group consisting of C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.20 ethylenically unsaturated alkyl(alkenyl), C.sub.5 -C.sub.8 cycloalkyl, hydroxy (C.sub.1 -C.sub.4) alkyl, C.sub.1 -C.sub.4 alkoxy (C.sub.2 -C.sub.4) alkyl, C.sub.2 -C.sub.4 oxiranyl, C.sub.1 -C.sub.8 amino alkyl, C.sub.1 -C.sub.4 alkoxy (C.sub.1 -C.sub.4) alkoxy (C.sub.2 -C.sub.4) alkyl, phenyl, substituted phenyl, phenyl (C.sub.1 -C.sub.9) alkyl, substituted phenyl (C.sub.1 -C.sub.9) alkyl, phenoxy (C.sub.1 -C.sub.9) alkyl and substituted phenoxy (C.sub.1 -C.sub.9) alkyl, wherein the phenyl substituents are represented by X.sub.m and wherein X is selected from the group consisting of C.sub.1 -C.sub.9 alkyl, cyano, chloro, bromo, methoxy, nitro, amino, methylthio and m is selected from the integers 1-5, and n is selected from the integers 1-4;
• and
• ii. a crosslinking amount of a material selected from the group consisting of anhydrous methacrylic anhydride, anhydrous acrylic anhydride, and mixtures of such anhydrides;
• and
• (b) a photochromic amount of a photochromic material selected from the group consisting of spiro(indoline) pyrido benzoxazine and spiro(benzindoline) pyrido benzoxazine, said polymerizate being permeable to ultraviolet and visible light.