Patent ID: 6733689
Filing Date: 2004-05-11
Classification: B41M,C09D,C09K

Abstract:
A liquid-crystalline composition comprisingA) a liquid-crystalline mixture comprising A1) 44-99.5% by weight based on the total amount of component A) of at least one compound of the formula Ia Z1â€”Y1â€”A1â€”Y3â€”M1â€”Y4â€”A2â€”Y2â€”Z2â€ƒâ€ƒIa, â€ƒand at least one compound of the formula Ib Z3â€”Y5â€”A3â€”Y7â€”M2â€”Pâ€ƒâ€ƒIb, â€ƒwhere the variables, independently of one another, are as defined below: P is hydrogen, or C1-C15 alkyl, which may be monosubstituted or polysubstituted by methyl, fluorine, chlorine or bromine and in which non-adjacent CH2-groups may be replaced by oxygen, sulfur, â€”COâ€”, â€”Oâ€”COâ€”, â€”COâ€”O or â€”Oâ€”COâ€”Oâ€”, where the variables are as defined below, Z1 to Z3 are polymerizable groups, Y1 to Y5 and Y7 are bridging units and are each a single chemical bond, oxygen, sulfur, â€”Oâ€”COâ€”, â€”COâ€”Oâ€”, â€”Oâ€”COâ€”Oâ€”, â€”COâ€”NRâ€”, â€”NRâ€”CO, â€”Oâ€”COâ€”NRâ€”, â€”NRâ€”COâ€”Oâ€”, or â€”NRâ€”COâ€”NRâ€”, Z1â€”Y1â€”, Z2â€”Y2â€”, and Z3â€”Y5â€” are selected from the group consisting of methacryloyloxy, acryloyloxy and vinyloxy, R is hydrogen or C1-C4 alkyl, A1 to A3 are spacers having 1 to 30 carbon atoms, in which the carbon chain may be monosubstituted or polysubstituted by methyl, fluorine, chlorine or bromine and/or interrupted by ether oxygen, thioether sulfur or by non-adjacent imino or C1-C4 alkylimino groups, M1 is a mesogenic group of the formula Ic â€”T1â€”Y9â€”T1â€²â€”â€ƒâ€ƒIc, â€ƒand M2 is a mesogenic group of the formula Id (â€”T2â€”Y10)râ€”T2â€ƒâ€ƒId, â€ƒwhere the variables in the formulae Ic and Id, independently of one another, are as defined below: T1, T1â€² and T2 are divalent saturated or unsaturated carbocyclic or heterocyclic radicals, Y9 and Y10 are bridging units as defined for Y1 to Y5 and Y7 or â€”CH2â€”Oâ€”, â€”Oâ€”CH2â€”, â€”CH&boxH;Nâ€”, â€”N&boxH;CHâ€” or â€”N&boxH;Nâ€”, r is a value of 0, 1, 2 or 3, where the radicals T2 and Y10, in the case where r is not 0, may be identical or different, and A2) at least one chiral compound selected from the group consisting of (Z5â€”Y11)nXâ€ƒâ€ƒIe, (Z5â€”Y11â€”A5â€”Y12)nXâ€ƒâ€ƒIf, â€ƒand (Z11â€”Y11â€”A5â€”Y12â€”Mâ€”Y13)nXâ€ƒâ€ƒIh, â€ƒin which the variables Z5 and Z11 are polymerizable groups, Y11 to Y13 are bridging units, A5 are spacers and M are mesogenic groups and which have the same general meaning as the variables Y1 to Y5 and Y7, A1 to A3 and M1 and M2 in the formulae Ia and Ib and for M1 and M2 in the formulae Ic and Id, n is 1, 2, 3, 4, 5 or 6, X is an n-valent chiral radical where the n groups bonded to the chiral radical X may be identical or different, B) further additives selected from the group consisting of b1) photoinitiators, b2) reactive thinners and b3) diluents, and C) if desired, further additives selected from the group consisting of c1) antifoams and deaerators, c2) lubricants and flow-control agents, c3) thermal curing or radiation-curing auxiliaries, c4) substrate wetting auxiliaries, c5) wetting and dispersion auxiliaries, c6) hydrophobicizing agents, c7) adhesion promoters and c8) auxiliaries for improving the scratch resistance, and D) if desired, further additives selected from the group consisting of d1) dyes and d2) pigments, and E) if desired, further additives selected from the group consisting of light, heat and/or oxidation stabilizers that stabilize the liquid-crystalline composition against light, heat and/or oxidation, where additives B), C), D) and E) are dispersed throughout the liquid-crystalline mixture A).