| abstract |
1,2-Phenylene cpds. of formula (I) are new. In (I), A-F = pyr(im)idin-2,5-diyl; trans-1,4-cyclohexylene; trans-1,3-dioxan-2,5-diyl; or 1,4-phenylene, opt. substd. by halogen, Me and/or CN; Z<1>, Z<2>, Z<7> = -CH2-(CH2)s-, -(CH2)sO-, -O(CH2)s-, -COO-, -OOC-, -(CH2)sCOO- or -(CH2)sOOC-; Z<3>, Z<4>, Z<8> = a single bond, -CH2CH2-, -CH2O-, -OCH2-, -COO-, -OOC-, -(CH2)4-, -O(CH2)3- or -(CH2)3O-; Z<5>, Z<6> = -(CY2)s-, -O(CY2)s-, -(CY2)sO-, -(CY2)sCOO-, -(CY2)sOOC-, -(SiÄMeÜ2O)s-, -OCH2(SiÄMeÜ2O)sSiÄMeÜ2CH2O- or -NHCH2(SiÄMeÜ2O)sSiÄMeÜ2CH2NH-; Y = H or F; m, n, w, r = 0, 1 or 2; s = 1-16; R<1>, R<2> = crosslinkable CH2=CH-, CH2=CX-COO-, CH2=CH-COO-Ph-, CH2=CX-CO-NH-, CH2=C(COOR')-CH2-COO-, CH2=CH-O-, CH2=CH-OOC-, Ph-CH=CH-, Me-C(=NR')-, cis,trans-HOO-CR'=CR'-COO- epoxy, R'-Phe-CH=CH- or R"-Phe-CH=CH-COO- gps.; X = H, Me, Cl or Ph; Ph = phenyl; Phe = phenylene; R' = lower alkyl; R" = Me, OMe, CN or halogen; R<1>-Z<5> and R<2>-Z<6> contain no -O-O- or -N-O- gps.; R<3> = H; halogen; CN; or an alkyl, alkoxy, alkoxycarbonyl or alkanoyloxy gp., opt. substd. y OMe, CN and/or halogen; X<1>, X<2>, X<3> = H, halogen, CN or lower alkyl. Also claimed are curable, liquid crystalline (LC) mixts. contg. NOTLESS 2 components, NOTLESS 1 of which is a cpd. (I). |