Patent ID: 6649230
Filing Date: 2003-11-18
Classification: C08F,C09K,G02F

Abstract:
A photoactive polymer, which comprises identical or different repeating monomer units M, wherein one or more of the monomer units M are substituted with at least one side chain as shown in formula I: in which:P is a photoactive group which can photoisomerise and/or photodimerise; B represents an aromatic or alicyclic group which is unsubstituted or substituted by fluorine, chlorine or cyano, or by a cyclic, straight-chain or branched alkyl residue which is unsubstituted, mono-substituted by cyano or halogeno, or poly-substituted by halogeno, having 1 to 18 carbon atoms and wherein one or more CH2 groups may independently be replaced by â€”Oâ€”, â€”COâ€”, â€”COâ€”Oâ€”, â€”Oâ€”COâ€”, â€”Si(CH3)2â€”Oâ€”Si(CH3)2â€”, â€”NR2â€”, â€”NR2â€”COâ€”, â€”COâ€”NR2â€”, â€”NR2â€”COâ€”Oâ€”, â€”Oâ€”COâ€”NR2â€”, â€”NR2â€”COâ€”NR2â€”, â€”CH&boxH;CHâ€”, â€”Câ‰¡Câ€”, or â€”Oâ€”COâ€”Oâ€”, with the proviso that oxygen atoms are not directly attached to each other, and wherein R2 represents a hydrogen atom or lower alkyl, or B alternatively represents a nitrogen atom or â€”CR2â€”; A, C, D each independently of the other represents an aromatic or alicyclic group which is unsubstituted or substituted by fluorine, chlorine, or cyano, or by a cyclic, straight-chain or branched alkyl residue which is unsubstituted, mono-substituted by cyano or halogeno, or poly-substituted by halogeno, having 1 to 18 carbon atoms and wherein one or more CH2 groups may independently be replaced by â€”Oâ€”, â€”COâ€”, â€”COâ€”Oâ€”, â€”Oâ€”COâ€”, â€”Si(CH3)2â€”Oâ€”Si(CH3)2â€”, â€”NR2â€”, â€”NR2â€”COâ€”, â€”COâ€”NR2â€”, â€”NR2â€”COâ€”Oâ€”, â€”Oâ€”COâ€”NR2â€”, â€”NR2â€”COâ€”NR2â€”, â€”CH&boxH;CHâ€”, â€”Câ‰¡Câ€”, or â€”Oâ€”COâ€”Oâ€”, with the proviso that oxygen atoms are not directly attached to each other, and wherein R2 represents a hydrogen atom or lower alkyl; M represents a repeating monomer unit in a homo- or copolymer; S1, S2, S3, S4, S5 each independently represent a single covalent bond or a spacer unit, comprising a straight-chain or branched alkylene residue which is unsubstituted, mono-substituted by cyano or halogeno, or poly-substituted by halogeno, having 1 to 24 carbon atoms, wherein one or more CH2 groups may independently be replaced by â€”Oâ€”, â€”COâ€”, â€”COâ€”Oâ€”, â€”Oâ€”COâ€”, â€”Si(CH3)2â€”Oâ€”Si(CH3)2â€”, â€”NR2â€”, â€”NR2â€”COâ€”, â€”COâ€”NR2â€”, â€”NR2â€”COâ€”Oâ€”, â€”Oâ€”COâ€”NR2â€”, â€”NR2â€”COâ€”NR2â€”, â€”CH&boxH;CHâ€”, â€”Câ‰¡Câ€”, or â€”Oâ€”COâ€”Oâ€”, with the proviso that oxygen atoms are not directly attached to each other, and wherein R2 represents a hydrogen atom or lower alkyl; n1, n2 are each independently 0, 1 or 2 with the proviso that n1+n2&lE;2; R1 is a hydrogen atom, or a straight-chain or branched alkyl residue which is unsubstituted, mono-substituted by cyano or halogeno, or poly-substituted by halogeno, having 1 to 18 carbon atoms, wherein one or more CH2 groups may independently be replaced by â€”Oâ€”, â€”COâ€”, â€”COâ€”Oâ€”, â€”Oâ€”COâ€”, â€”Si(CH3)2â€”Oâ€”Si(CH3)2â€”, â€”NR2â€”, â€”NR2â€”COâ€”, â€”COâ€”NR2â€”, â€”NR2â€”COâ€”Oâ€”, â€”Oâ€”COâ€”NR2â€”, â€”NR2â€”COâ€”NR2â€”, â€”CH&boxH;CHâ€”, â€”Câ‰¡Câ€”, or â€”Oâ€”COâ€”Oâ€”, with the proviso that oxygen atoms are not directly attached to each other, and wherein R2 represents a hydrogen atom or lower alkyl.