Photocrosslinkable naphthyl derivatives

The present invention relates to compounds of the general formula    whereinR1 and R2independently of one another a crosslinkable group such as ethylene, acrylate, methacrylate, 2-chloroacrylate, 2-phenylacrylate, acryloylphenylene, acrylamide, methacrylamide, 2-chloroacrylamide, 2-phenylacrylamide, epoxy, itaconic acid ester, vinyloxy, vinyl ester, styrene derivatives, siloxanes, ethyleneimine Derivatives, maleic acid derivatives, fumaric acid derivatives or an optionally methyl, methoxy, cyano and / or halogen substituted cinnamic acid derivative;S1and S2- (CY2)m-, -O (CY2)m-, - (CY2)mO-, - (CY2)mCOO-, - (CY2)mOOC-, - (Si [(CH3)2]O)m-, -OCH2(Yourself3)2]O)mYourself3)2] CH2O- or -NHCH2(Yourself3)2]O)mYourself3)2] CH2NH-;YHydrogen, fluorine or methyl;a0 or 1;b1 or 2, with the proviso that a + b = 2 is;man integer from 1 to 16;A1 and A2independently of one another optionally halogen, cyano, methyl, methoxy and / or acetyl mono- or polysubstituted 1,4-phenylene, pyridine-2, 5-diyl, pyrimidine-2, 5-diyl, trans-1,4-cyclohexylene or trans -1,3-dioxane-2,5-diyl; andZ1 and Z2independently a single bond, -CH2CH2-, -OCH2-, -CH2O-, -COO-, -OOC-, - (CH2)4-, -O (CH2)3- or - (CH2)3O- mean liquid crystalline mixtures containing such compounds, as well as their use in cross-linked state for optical components.