Patent ID: 8308995
Filing Date: 2012-11-13
Classification: C07D,C08K,Y10T

Abstract:
1. A chromene composition comprising a chromene compound represented by the following formula (1) and a chromene compound having an absorbance due to thermochromism of 0.1 or less and the absorption end of its ultraviolet absorption spectrum at 380 to 430 nm and represented by the following formula (2): wherein R 1 and R 2 are each independently an alkyl group having 1 to 9 carbon atoms, cycloalkyl group having 3 to 12 carbon atoms, perfluoroalkoxy group having 1 to 6 carbon atoms, aralkyl group having 7 to 11 carbon atoms, aralkoxy group having 7 to 11 carbon atoms, aryl group having 6 to 10 carbon atoms, aryloxy group having 6 to 10 carbon atoms or alkoxy group having 1 to 6 carbon atoms, with the proviso that R 1 and R 2 cannot be alkoxy groups having 1 to 6 carbon atoms at the same time; R R R wherein R 7 and R 8 are each an alkyl group having 1 to 9 carbon atoms, alkoxy group having 1 to 6 carbon atoms, aryl group having 6 to 10 carbon atoms, amino group, heterocyclic group having a nitrogen atom as a hetero atom and bonded to a benzene ring by the nitrogen atom bonded to the benzene ring, or halogen atom, o and p are each an integer of 0 to 2, with the proviso that when o and p are each an integer of 1 to 2, R 7 and R 8 , two R 7 's and two R 8 's may be the same or different; R when q is 2, the both substituents may be bonded together to form an alkylenedioxy group having 1 to 8 carbon atoms; R wherein R 12 is an alkyl group having 1 to 9 carbon atoms, cycloalkyl group having 3 to 12 carbon atoms, alkoxy group having 1 to 6 carbon atoms, aralkyl group having 7 to 11 carbon atoms, aralkoxy group having 7 to 11 carbon atoms, aryl group having 6 to 10 carbon atoms, aryloxy group having 6 to 10 carbon atoms, alkoxycarbonyl group having 2 to 7 carbon atoms, carboxyl group, amino group, heterocyclic group having a nitrogen atom as a hetero atom and bonded to a benzene ring by the nitrogen atom bonded to the benzene ring, cyano group, halogen atom, halogenoalkyl group having 1 to 6 carbon atoms or halogenoalkoxy group having 1 to 6 carbon atoms, and r is an integer of 0 to 3; R further R wherein R 15 is an alkyl group having 1 to 9 carbon atoms, cycloalkyl group having 3 to 12 carbon atoms, alkoxy group having 1 to 6 carbon atoms, aralkyl group having 7 to 11 carbon atoms, aralkoxy group having 7 to 11 carbon atoms, aryl group having 6 to 10 carbon atoms, aryloxy group having 6 to 10 carbon atoms, alkoxycarbonyl group having 2 to 7 carbon atoms, carboxyl group, amino group, heterocyclic group having a nitrogen atom as a hetero atom and bonded to a benzene ring by the nitrogen atom bonded to the benzene ring, cyano group, halogen atom, halogenoalkyl group having 1 to 6 carbon atoms or halogenoalkoxy group having 1 to 6 carbon atoms, and l is an integer of 0 to 3.