Abstract: Novel benzimidazolo[1,2-a]benzimidazoles carrying aryl- or heteroarylnitril groups, an electronic device, comprising said novel benzimidazolo[1,2-a]benzimidazoles carrying aryl- or heteroarylnitril groups, which is preferably an electroluminescent device, a charge transport layer, a charge/exciton blocker layer, or an emitting layer comprising said novel benzimidazolo[1,2-a]benzimidazoles carrying aryl- or heteroarylnitril groups, an apparatus selected from the group consisting of stationary visual display units; mobile visual display units; illumination units; key-boards; items of clothing; furniture; wallpaper, comprising said organic electronic device, or said charge transport layer, said charge/exciton blocker layer, or said emitting layer.

Abstract: The present invention relates to compounds of formula (I) which are characterized in that they are substituted by at least one nitrile substituted carbazolyl group and their use in electronic devices, especially electroluminescent devices. When used as electron transport material, hole blocking material and/or host material for phosphorescent emitters in electroluminescent devices, the compounds of formula I may provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices.

Abstract: Novel benzimidazolo[1,2-a]benzimidazoles carrying aryl- or heteroarylnitril groups, an electronic device, comprising said novel benzimidazolo[1,2-a]benzimidazoles carrying aryl- or het-eroarylnitril groups, which is preferably an electroluminescent device, a charge transport layer, a charge/exciton blocker layer, or an emitting layer comprising said novel benzimidazolo[1,2-a]benzimidazoles carrying aryl- or heteroarylnitril groups, an apparatus selected from the group consisting of stationary visual display units; mobile visual display units; illumination units; key-boards; items of clothing; furniture; wallpaper, comprising said organic electronic device, or said charge transport layer, said charge/exciton blocker layer, or said emitting layer.

Abstract: The present invention relates to compounds of formula (I) which are characterized in that they are substituted by at least one nitrile substituted carbazolyl group and their use in electronic devices, especially electroluminescent devices. When used as electron transport material, hole blocking material and/or host material for phosphorescent emitters in electroluminescent devices, the compounds of formula I may provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices.

Abstract: The present invention relates to a photochromic ink, the process for its preparation which is based on a spiropyran powder obtainable by melting, cooling and crushing, and to a new form of a spiropyran obtainable thereby. Said process to prepare a photochromic ink comprises the steps of a) heating and melting the spiropyran at a temperature below 250 C, b) cooling the melt to obtain a solidified spiropyran, c) crushing the solidified spiropyran to obtain a powder, d) optionally adding the powder to a binder providing the basis for the photochromic ink.

Abstract: The present invention relates to a device for monitoring integral value of time, temperature comprising at least one layer of polymer comprising a latent pigment capable of undergoing at least one colour change, and an organic acid; or comprising one layer of polymer comprising a latent pigment capable of undergoing at least one colour change, and one layer of polymer comprising an organic acid, wherein said latent pigment is converted to its pigmentary form which causes said colour change. The device can be used for monitoring sterilization of medical and kitchen supplies, canned foods and doneness of microwave foods.

Abstract: The present invention relates to an oxonol dye of formula (I) wherein R1 and R2 are each independently of the other linear or branched C2-C6alkyl residues; R3, R4 and R5 are each independently of the other hydrogen, a C2-C14alkyl residue which may be unsubstituted or hydroxy- or amino-substituted and optionally interrupted by an oxygen atom and R6 is a C2-C14alkyl residue, which may be unsubstituted or hydroxy- or amino-substituted and optionally interrupted by an oxygen atom.

Abstract: The present invention relates to a photochromic ink, the process for its preparation which is based on a spiropyran powder obtainable by melting, cooling and crushing, and to a new form of a spiropyran obtainable thereby. Said process to prepare a photochromic ink comprises the steps of a) heating and melting the spiropyran at a temperature below 250 C, b) cooling the melt to obtain a solidified spiropyran, c) crushing the solidified spiropyran to obtain a powder, d) optionally adding the powder to a binder providing the basis for the photochromic ink.

Abstract: The present invention relates to time-temperature indicator (TTI) systems comprising indolenin based spiropyrans containing a N-acetylamido or N-acetylester side chain, especially to a time temperature indicator comprising at least one spiropyran indicator of formula (I) Wherein R1 is hydrogen, —C1-C18 alkoxy, —C1-C18 alkylthio, —C1-C18 alkyl-SO—, —C1-C18 alkyl-SO2—, phenylthio, phenyl, halogen, —C1-C18 alkylthio, —C1-C18 alkyl-SO—, —C1-C18 alkyl-SO2—, phenylthio, phenyl, halogen, —C1-C18 alkyl or —NO2; R2 is hydrogen or —C1-C18 alkoxy; R3 is NO2 or halogen; R4 is hydrogen, —C1-C18 alkoxy or halogen; R5 is hydrogen, halogen, —C1-C18 alkoxy, —COOH, —COO—C1-C18alkyl, —CF3 or phenyl; R6 is hydrogen or R6 and R7 form together a phenyl ring; R7 is hydrogen; Ra is hydrogen or —C1-C6 alkyl; Rb is hydrogen or —C1-C6 alkyl, or together with Ra form a 5-6 membered ring; Y is —CH2—COO—R8 or —CH2—CO—N(R10)—R9; or CH2—CO—N(R10)-L-N(R10) CO—CH2— or Y is —CH2—CO—O-L?-O—CO—CH2— wherein R8 is hydrogen, C3-C18alkyl or R8 is et

Abstract: The present invention relates to a time temperature indicator for indicating a temperature change over time comprising one dimeric or trimeric spiropyran indicator of the formula I or II wherein R1-R4 independently of one another is hydrogen, —C1C6 alkoxy, halogen, CF3, —C1C6 alkyl or —NO2, R5 is hydrogen, halogen, —C1-C6 alkoxy, —COOH, —COO—C1-C6 alkyl, —CF3 or phenyl; R11 is hydrogen or R11 and R5 form together a phenyl ring; Ra is —C1-C6 alkyl Rb is —C1-C6 alkyl, or together with Ra form a 5-6 membered ring L is a divalent linker; L? is a trivalent linker.

Abstract: The present invention relates to time-temperature indicator (TTI) systems comprising spiropyran indicator of formula (I) wherein R1 is hydrogen, —C1-C6 alkoxy, halogen, —C1-C6 alkyl or —NO2, R2 is hydrogen or —C1-C6 alkoxy; R3 is NO2 halogen; R4 is hydrogen, —C1-C6 alkoxy or halogen; R5 is hydrogen, halogen, —C1-C6 alkoxy, —COOH, —COO—C1-C6alkyl, —CF3 or phenyl; R11 hydrogen or R11 and R5 form together a phenyl ring; Y is phenyl, naphthyl, anthracen-9-yl, 9H-fluoren-9-yl or a residue Formula (A) wherein R6 is hydrogen, halogen, —C1-C6 alkoxy, —NO2, —CF3, —O—CF3, —CN, —COO—C1-C6alkyl, phenyl or biphenyl, 9H-fluoren-9-yl; R7 is hydrogen, halogen, —CN,—C1-C6 alkoxy or R7 and R6 form together a phenyl ring; R8 is hydrogen, halogen, —CN, or —C1-C6 alkoxy; R9 is hydrogen or halogen or CN. R10 is hydrogen or halogen or CN. Ra is —(CH2)n- with n=1-6 or —CH2—CH?CH—. With the proviso that Formula (B) and Formula (C) are excluded.

Abstract: The present invention relates to a colorant composition comprising (i) an oxonol dye of general formula (I) wherein R1 and R2 are each independently of the other linear or branched C2-C6alkyl residues; R3, R4 and R5 are each independently of the other hydrogen, a C2-C14alkyl residue which may be unsubstituted or hydroxy- or amino-substituted and optionally interrupted by an oxygen atom and R6 is a C2-C14alkyl residue, which may be unsubstituted or hydroxy- or amino-substituted and optionally interrupted by an oxygen atom; and (ii) at least one cellulose nitrate binder.

Abstract: The present invention relates to azo dyes of formula (1) which are soluble in organic solvents, wherein R1 is —CN, —COOR5, —CONR6R7 or a heterocyclic ring, R2 is unsubstituted or substituted alkyl, unsubstituted or substituted aryl, —CF3, —COOR5, —CONR6R7 or —COR5, R3 is hydrogen, —SO3M, alkyl, alkoxy, alkylcarbonyl, —NO2 or halogen, R4 is substituted aryl, substituted heteroaryl or an aryl-N?N-aryl radical, wherein one or both of the aryl radicals in aryl-N?N-aryl is/are unsubstituted or substituted, or a radical heteroaryl-N?N-heteroaryl, wherein one or both of the heteroaryl radicals in heteroaryl-N?N-heteroaryl is/are unsubstituted or substituted, R5 is hydrogen, alkyl or unsubstituted or substituted aryl, R6 is hydrogen, alkyl or unsubstituted or substituted aryl, R7 is hydrogen, alkyl or unsubstituted or substituted aryl, M+ is a cation, n is a number 1, 2 or 3 and m is a number 1, 2 or 3, to a process for the preparation thereof and to the use thereof in the production of colored plastics or polymeric

Abstract: The present invention relates to azo dyes of formula (1) which are soluble in organic solvents, wherein R1 is —CN, —COOR5, —CONR6R7 or a heterocyclic ring, R2 is unsubstituted or substituted alkyl, unsubstituted or substituted aryl, —CF3, —COOR5, —CONR6R7 or —COR5, R3 is hydrogen, —SO3M, alkyl, alkoxy, alkylcarbonyl, —NO2 or halogen, R4 is substituted aryl, substituted heteroaryl or an aryl-N?N-aryl radical, wherein one or both of the aryl radicals in aryl-N?N-aryl is/are unsubstituted or substituted, or a radical heteroaryl-N?N-heteroaryl, wherein one or both of the heteroaryl radicals in heteroaryl-N?N-heteroaryl is/are unsubstituted or substituted, R5 is hydrogen, alkyl or unsubstituted or substituted aryl, R6 is hydrogen, alkyl or unsubstituted or substituted aryl, R7 is hydrogen, alkyl or unsubstituted or substituted aryl, M+ is a cation, n is a number 1, 2 or 3 and m is a number 1, 2 or 3, to a process for the preparation thereof and to the use thereof in the production of coloured plastics or polym