Ciba Specialty Chemicals Corporation

Basf Se Corporation

Ciba Corporation

Max-Planck-Gesellschaft Zur F&#xf6;rderung Der Wissenschaften E. V.

Hans Reichert

Athanassios Tzikas

Helmut Reichelt

Harald Walter

Herbert Klier

Bernhard Muller

Oliver Seeger

Urs Lehmann

Klaus Muellen

Philippe Bugnon

Thomas Bolle

Yves Bron

Thomas Gessner

Korinna Dormann

Alexander Stuck

Rolf Deitz

Klaus Müllen

Michelle Richert

Thomas Eichenberger

Véronique Hall-Goulle

Marc Schnieper

Bernhard Müller

Peter Simmendinger

Long Chen

Max Hügin

Rene Fischer

Karin Eberius

Christian Doerr

Ulrich Veith

Thomas Verdugo

Igor Zhurminsky

Christian Fabian

Bernhard Seider

Marina Schiller

Daniel Jaensch

Sibylle Soder

René Fischer

The present invention relates to a new crystal form of bis(diphenylimidazolidinetrithione-&#x3ba;S4, &#x3ba;S5)-, (SP-4-1)-nickel(II), a printing ink formulation for security printing and security documents, comprising the new crystal form of bis(diphenylimidazolidinetrithione-&#x3ba;S4, &#x3ba;S5)-, (SP-4-1)-nickel(II) as well as its use as IR absorber.

Crystal form of a dithiolene metal complex

The present invention relates to the use of specific naphthalocyanine chromophores with different axial substituents as almost colourless IR absorbers for security printing applications.

Naphthalocyanine derivatives

The present invention relates to specific Ga-naphthalocyanine chromophores with short chain alkoxy axial substituents, their use as almost colourless IR absorbers, for optical filter applications; especially for plasma display panels, or for laser welding of plastics. The compounds may be used in compositions for inks, paints and plastics, especially in a wide variety of printing systems and are particularly well-suited for security applications.

Ga-naphthalocyanine chromophores with short chain alkoxy axial substituents

Provided is a 4-oxoquinoline compounds of the formula (I) (I) wherein A is selected from diradicals of the formulae (A.1), (A.2), (A.3), (A.4), (A.5) and (A.6), (A.1) (A.2) (A.3) (A.4) (A.5) (A.6) wherein R, R, R, R, R, if present R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, Rand Rare as defined in the claims and in the description. Also provided is a method for their preparation and their use. 

4-oxoquinoline compounds

The present invention is in the field of security documents, more particularly in the field of security elements aimed to protect security documents against copying (illegal reproduction) and counterfeiting. It discloses a security element having a security feature which changes its visual appearance after irradiation with light, especially with UV light and at rotation and/or tilting. Security documents comprising said security element, as well as a method for producing said security element, are also disclosed.

Security element

The invention relates to novel inorganic brighteners, a process for their preparation and their use for brightening substrates. More specifically, the novel inorganic brighteners are phosphors characterized in that they have (i) an absorption maximum in the range of from 350 to 375 nm; (ii) a steep decrease of the absorption band near 400 nm; (iii) a quantum yield of the phosphorescence of at least 0.8; and (iv) a phosphorescence maximum in the range between 415 and 445 nm.

Inorganic optical brightener

The present invention is directed to 2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxo-propyl]azo]-benzoic acid (C.I. Pigment Yellow 151): (I), characterized by a &#x394;E* (black/white) in masstone below 22.0&#xb1;0.7, a process for its preparation and its use for pigmenting macromolecular organic materials of natural or synthetic origin. The pigment has high opacity and high color strength.

2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]-benzoic acid and a process for its preparation

The present invention relates to a method of printing a substrate, comprising (a) printing onto the substrate at least one time temperature indicator with chromic properties based on an azo coupling reaction between a capped diazonium component and a coupling component.

Method of printing a time-temperature indicator based on azo coupling reactions onto a susbtrate

A time temperature indicator for indicating temperature change over time is provided, comprising an immobilized enzyme and a substrate of the enzyme, wherein the reaction of the substrate catalyzed by the enzyme produces a reaction product in a time and temperature dependent manner and wherein the formation of the reaction product can be detected by monitoring a physical characteristic of the substrate and/or the product which is linked to its concentration. Also provided is a method of time temperature indication comprising the step of an enzyme-catalyzed reaction, a method of printing the enzyme-based time temperature indicator on a packaging material or a label, a printing ink or printing ink concentrate comprising components of the enzyme-based time temperature indicator and a packaging material or a label comprising the enzyme-based time temperature indicator.

Enzyme-based time temperature indicator

Reactive dyes of formulawherein A is the radical of a monoazo, polyazo, metal complex azo, anthraquinone, phthalocyanine, formazan or dioxazine chromophore, R, Rand Rare each hydrogen or unsubstituted or substituted C-Calkyl, Xand Xare halogen, B is an organic bridging member, T is a reactive radical as defined herein and Vand Vare each independently of the other N, C&#x2014;H, C&#x2014;Cl or C&#x2014;F, give prints that are distinguished by brilliant color shades and good all-round properties.

Method of printing cellulosic fiber materials without an additional fixing process step

Method for printing cellulosic fiber materials without an additional fixing process step

Reactive dyes, processes for their preparation and their use

Reactive dyes containing a formazan dye radical and monoazo dye radical, a process for their preparation and their use

Dye mixtures comprising at least one compound of the formula ##STR1## and at least one compound of the formula ##STR2## in which the variables are as defined in the claims, which are suitable as fibre-reactive dyes for dyeing widely varying fibre materials, are described.

Dye mixtures processes for their preparation and their use

Dye mixtures comprising at least one reactive dye of formula ##STR1## together with at least one reactive dye of formula ##STR2## give dyeings having good fastness properties on nitrogen-containing or hydroxyl group-containing fiber materials.

Mixtures of reactive dyes and their use

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Rheinfelden, Germany

Hans Reichert