Patent ID: 8404864

Claim:
A compound of the formula I wherein R 1 and R 2 are independently of each other an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic, aromatic, aromatic-aliphatic, heteroaromatic or heteroaromatic-aliphatic group having up to 49 carbon atoms, a and d independently of each other are 0, 1, 2 or 3, Ar 1 and Ar 4 are independently of each other a bivalent group of the formula II or IV wherein R 6 and R 7 are as defined below, p represents 0, 1, or 2, R 5 is an aliphatic hydrocarbon group having up to 25 carbon atoms, or two vicinal groups R 5 together represent alkylene or alkenylene having up to 7 carbon atoms, it being possible that two groups R 5 present in the group of formula II differ from each other, b, c, e, and f independently of each other represent 1, 2 or 3, Ar 2 , Ar 3 , Ar 5 , and Ar 6 are independently of each other a bivalent group of one of the formulae IV to X, wherein R 6 , R 7 , R 8 , R 9 , R 12 , R 13 , R 15 , R 16 , R 17 , R 18 , R 19 , R 20 and R 21 are independently of each other hydrogen, C 1 -C 25 alkyl, C 1 -C 18 alkoxy, C 6 -C 24 aryl, C 7 -C 25 aralkyl, or heteroaryl, or R 6 and R 7 together represent alkylene or alkenylene which may be both bonded via oxygen and/or sulfur to the thienyl residue and which may both have up to 25 carbon atoms, R 10 and R 11 are independently of each other hydrogen, C 1 -C 18 alkyl, C 6 -C 24 aryl, heteroaryl, or R 10 and R 11 together represent oxo or form a five or six membered ring, which is unsubstituted or substituted by a) an aliphatic hydrocarbon group having up to 18 carbon atoms, b) C 1 -C 18 alkoxy or C 2 -C 18 alkylenedioxy in both of which carbon atoms which are not adjacent to oxygen may be replaced by oxygen, or c) C 6 -C 24 aryl, C 7 -C 25 aralkyl, heteroaryl, C 3 -C 12 cycloalkyl or C 4 -C 12 cycloalkyl-alkyl, and R 3 and R 4 are independently of each other a group of one of the formulae, (XIV) wherein R 22 to R 26 and R 29 to R 58 represent independently of each other hydrogen, an aliphatic hydrocarbon group having up to 25 carbon atoms, alkoxy or alkenyloxy having up to 18 carbon atoms, halogen, a cycloaliphatic, cycloaliphatic-aliphatic, aromatic, aromatic-aliphatic, heteroaromatic or heteroaromatic-aliphatic group having up to 25 carbon atoms, or a group of the formula (III) wherein R represents an aliphatic hydrocarbon group having up to 12 carbon atoms, or two groups R 22 to R 26 and R 29 to R 57 which are in the neighborhood of each other, together represent alkylene or alkenylene having up to 8 carbon atoms, thereby forming a ring, and R 27 and R 28 are independently of each other hydrogen, C 1 -C 25 alkyl, C 1 -C 18 alkoxy, C 6 -C 24 aryl, C 7 -C 25 aralkyl, heteroaryl, or a group of the formula (III) shown above, wherein R represents an aliphatic hydrocarbon group having up to 12 carbon atoms, or R 27 and R 28 together or R 27 and R 58 together represent alkylene or alkenylene which may be both bonded via oxygen and/or sulfur to the thienyl residue and which may both have up to 25 carbon atoms.