Patent ID: 6541602
Filing Date: 2003-04-01
Classification: C08G,C09K

Abstract:
A conjugated polymer which comprises structural units of the formula (I) and formula (II) in which R1 and R2 are identical or different and are hydrogen, C1-C22-alkyl, C2-C20-heteroaryl, C5-C20-aryl, F, Cl, CN, wherein said alkyl is branched, unbranched or alternatively is a cycloalkyl radical, and individual, non-adjacent CH2 group(s) of said alkyl is optionally replaced by O, S, C&boxH;O, COO, Nâ€”R5 or a simple aryl radical, wherein said above mentioned aryls are optionally substituted by one or more substituents R3, R3 and R4 are identical or different and are C1-C22-alkyl, C2-C20-heteroaryl, C5-C20-aryl, F, Cl, CN, SO3R5 or NR5R6, wherein the alkyl radical is branched, unbranched or alternatively is a cycloalkyl radical, and individual, non-adjacent CH2 group(s) of the alkyl radical is optionally replaced by O, S, C&boxH;O, COO, Nâ€”R5 or a simple aryl radical, wherein the above mentioned aryls are optionally substituted by one or more non-aromatic substituents R3, R5 and R6 are identical or different and are H, C1-C22-alkyl, C2-C20-heteroaryl or C5-C20-aryl, wherein the alkyl radicals are branched or unbranched or alternatively are cycloalkyl radicals, and individual, non-adjacent CH2 groups of the alkyl radical are optionally replaced by O, S, C&boxH;O, COO, Nâ€”R5 or a simple aryl radical, wherein the above mentioned aryls are optionally substituted by one or more non-aromatic substituents R3, and m and n are each an integer 0, 1, 2 or 3, Ar is a mono- or polycyclic aromatic conjugated system having 5 to 20 carbon atoms, in which one or more carbon atoms are optionally replaced by nitrogen, oxygen or sulfur and whose linking points are selected so that an angle not equal to 180Â° is formed along the main polymer chain.