Photochromic compound, composition and use thereof.

摘要

Spiroxazines of formula (I) <CHEM> wherein R<1> and R<2> are the same or different and each is alkyl of 1 to 20 carbon atoms, or R<1> and R<2> together with the carbon to which both R<1> and R<2> are bonded form a cycloalkyl ring, a bicycloalkyl ring or a tricycloalkyl ring; R<3> is alkyl of 1 to 10 carbon atoms, aryl of 6 to 10 carbon atoms, aralkyl of 7 to 14 carbon atoms, cyanoalkyl wherein the alkyl group has 1 to 10 carbon atoms, or alkoxycarbonylalkyl wherein the alkoxy group has 1 to 10 carbon atoms and the alkylene group has 1 to 10 carbon atoms; R<4> and R<5> are the same or different and each is hydrogen, halogen, alkyl of 1 to 10 carbon atoms, aryl of 6 to 10 carbon atoms, aralkyl of 7 to 14 carbon atoms, alkoxy of 1 to 10 carbon atoms, cyano, halogenoalkyl of 1 to 4 carbon atoms, amino,mono- or di-substituted amino, cyclic amino, alkoxycarbonyl wherein the alkoxy group has 1 to 5 carbon atoms, or a monocyclic heterocyclyl group having 5 or 6 ring atoms including one ring nitrogen; <CHEM> is a substituted or unsubstituted aromatic hydrocarbon group or a substituted or unsubstituted unsaturated heterocyclic group wherein each substituent is selected from halogen, hydroxyl, cyano, nitro, alkyl of 1 to 20 carbon atoms, alkoxy of 1 to 20 carbon atoms, aryl of 6 to 10 carbon atoms, alkylamino of 1 to 4 carbon atoms, dialkylamino having 1 to 4 carbon atoms in each alkyl group, halogenoalkyl of 1 to 4 carbon atoms, monocyclic heterocyclic group having 5 or 6 ring atoms, aralkyl of 7 to 14 carbon atoms and alkoxycarbonyl of 1 to 5 carbon atoms, and <CHEM> is a substituted or unsubstituted aromatic hydrocarbon group or a substituted or unsubstituted unsaturated heterocyclic group wherein each substituent is selected from halogen, cyano, nitro, alkyl of 1 to 20 carbon atoms, alkoxy of 1 to 20 carbon atoms, amino or dialkylamino having 1 to 4 carbon atoms in each alkyl group provided that, when R1 and R2 are both methyl, <CHEM> is a substituted or unsubstituted fused polycyclic aromatic hydrocarbon group are photochromic and may be used in photochromic lenses.