Patent ID: 6699405
Filing Date: 2004-03-02
Classification: C09K

Abstract:
A polymerizable liquid-crystalline compound of formula (I) whereinA1 and A2 are each independently of one another, a group of the formula Zâ€”X1â€”(Sp)nâ€”whereinZ is a crosslinkable radical; X1 â€”Oâ€”, â€”Sâ€”,â€”C&boxH;Nâ€”, â€”Oâ€”COâ€”, â€”COâ€”Oâ€”, â€”Oâ€”COâ€”, â€”COâ€”NRâ€”, â€”NRâ€”COâ€”, â€”NRâ€”, â€”Oâ€”COâ€”NR, â€”NRâ€”COâ€”Oâ€”, â€”CH2â€”Oâ€” or â€”NRâ€”COâ€”NR, in which R is H or C1-C4-alkyl; Sp is a spacer having from 1 to 30 carbon atoms, in which the carbon chain may be interrupted by either oxygen, thioether sulfur or nonadjacent imino or C4-C1-alkylimino groups; and n is 0 or 1; the radicals X are identical or different and are each a single bond, â€”Oâ€”, â€”Sâ€”, â€”C&boxH;Nâ€”, â€”Oâ€”COâ€”, â€”COâ€”Oâ€”, â€”Oâ€”COâ€”Oâ€”, â€”COâ€”NRâ€”, â€”NRâ€”COâ€”, â€”NRâ€”, â€”Oâ€”COâ€”NR, â€”NRâ€”COâ€”Oâ€”, â€”CH2â€”Oâ€” or â€”NRâ€”COâ€”NR, in which R is H or C1-C4-alkyl; and M is a mesogenic group.