Patent ID: 11965102
Assignee: RODENSTOCK GMBH
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  G | IPC C  G

Claim 1:
2. Photochromic fused naphthopyrans as claimed in claim 1, in which the radical R1 represents the moiety:, and the radical R3 is a substituent selected from hydrogen, bromine, chlorine, fluorine, a (C1-C6)-alkyl radical, a (C3-C7)-cycloalkyl radical, a (C1-C6)-thioalkyl radical, a (C1-C18)-alkoxy radical, a hydroxyl radical, a tert-butyldimethylsilyloxy radical, a tert-butyldiphenylsilyloxy radical, a trifluoromethyl radical, a phenyl radical, a 4-methoxyphenyl radical, a phenoxy radical, a 4-methoxyphenoxy radical, a benzyl radical, a 4-methoxybenzyl radical, a benzyloxy radical, a 4-methoxybenzyloxy radical, a biphenylyl radical, a diphenylyloxy radical, a naphthyl radical, a naphthoxy radical, a mono-(C1-C6)-alkylamino radical, a di-(C1-C6)-alkylamino radical, a phenylamino radical, a (C1-C6)-alkyl-phenylamino radical, a diphenylamino radical, a (4-methoxyphenyl)amino radical, a ((C1-C6)-alkyl)-(4-methoxyphenyl)amino radical, a bis(4-methoxyphenyl)amino radical, a piperidyl radical, a 3,5-dimethylpiperidyl radical, an indolinyl radical, a morpholinyl radical, a 2,6-dimethylmorpholinyl radical, a thiomorpholinyl radical, an azacycloheptyl radical, a phenothiazinyl radical, a phenoxazinyl radical, a 1,2,3,4-tetrahydroquinolyl radical, a 1,2,3,4-tetrahydroisoquinolyl radical, a phenazinyl radical, a carbazolyl radical, a 1,2,3,4-tetrahydrocarbazolyl radical or a 10,11-dihydrodibenz[b,f]azepinyl radical; and in which the other radicals are as defined above.