Ciba-geigy Corporation

Ciba Specialty Chemicals Corporation

Basf Se Corporation

Datalase Limited

Ciba Corporation

Adolf Käser

Holger Lautenbach

Jonathan Campbell

Frank Bachmann

Georg Roentgen

Michael Lennartz

Sandra Weiss

Chandrasekhar Dayal Mudaliar

Dinesh Narendra Rele

Sneha Shankar Rane

Athanassios Tzikas

Urs Lehmann

Marc Andrew Mamak

Robert M O'Neil

Howard Roger Dungworth

Ralf Knischka

Michael Heneghan

John Whitworth

Hans Kramer

Christof Dosenbach

Alan Platt

Wolfgang Schlenker

Karen O'Donoghue

Francesca Peri

Mini Jeevanath

Roger Wolfgang Basler

Charles Hunger

Alfred Hohener

Jacek Malisz

Martina Hoffmann

Alfred Höhener

Rainer Kaufel

Elke Polley

Robert Montgomery O'Neil

Aqueous composition comprising a color former, a developer, and a binder, wherein (a) the weight ratio between the developer and the color former is in the range of from 1 to 5; (b) the binder comprises an acrylate binder, comprising acrylic acid and styrene, and at least one additional monomer selected from the group consisting of &#x3b1;-methyl styrene, ethyl acrylate and 2-ethylhexyl acrylate; and (c) the color former and/or the developer are present in an un-encapsulated form; a process for the preparation of these compositions, substrates coated with this composition and a process for its preparation, and a process for preparing a marked substrate using this composition.

Aqueous laser-sensitive composition for marking substrates

Coating composition comprising a char forming compound as a first compound capable of forming a colored substance upon exposition to energy; at least one latent activator selected from the group consisting of ammonium phosphate, ammonium polyphosphate, ammonium sulfite, ammonium thiosulfate, ammonium sulfamate and ammonium sulfate; and a second compound capable of forming a colored substance upon exposition to energy selected from the group consisting of color formers, oxygen containing transition metal compounds, and metal-chelate-type color forming systems; a coating composition comprising a char forming compound as a first compound capable of forming a colored substance upon exposition to energy, and a second compound capable of forming a colored substance upon exposition to energy selected from the group consisting of color formers and metal-chelate-type color forming systems; a process for the preparation of these compositions, substrates coated with these compositions and a process for their preparation, a process for preparing marked substrates using these compositions and marked substrates obtainable by the latter process.

Coating composition for marking substrates

Fiber products, comprising in their body at least 20% by weight of cellulose fibers, and adequate amounts of an acid and a cationic retention aid for the acid, can be marked by means of a laser beam.

Fiber products

The invention relates to a powder composition comprising particles of a) an alkali metal tungsten bronze, b) tungsten oxide, and c) tungsten metal, a method for the preparation of said powder composition, and to the use of said powder composition in form of a dispersion in a polymer material or article for heat shielding, or to increase the heat-input amount of near infrared radiation in processes selected from laser welding of plastics, NIR curing of coatings, drying of printing inks, fixing of ink toners to a substrate, heating of plastic performs, laser marking of plastics or paper.

Heat absorbing additives

The present invention relates to a shading process characterized by using a composition comprising a phthalocyanine to which at least one dyestuff is attached through a covalent bonding, to shading compositions, to new compounds used in these shading compositions as well as to the production of these new compounds.

Shading process

The present invention relates to new compounds, which are molecular combinations of a phthalocyanine and a mono-azo dyestuff linked via specific linking groups and to a process for their preparation. Further aspects are shading compositions using these compounds.

The present invention provides coating compositions comprising (i) a) a compound containing a free carbonyl group and b) a nucleophile or (ii) a compound containing a free carbonyl group, which compound is substituted with one or more nucleophilic groups. The present invention also provides a process for the preparation of these compositions, substrates coated with these compositions and a process for their preparation, a process for preparing marked substrates using these compositions, and marked substrates obtainable by the latter process.

Electromagnetic radiation or thermally sensitive composition

The present invention relates to novel yellow anionic dyes, a process for their preparation, certain novel intermediates necessary for their preparation and the use of these dyes for dyeing natural or synthetic materials, in particular, paper. The dyes are of formula (14), (15) or (16) in which

Yellow anionic disazo dyes

The invention relates to an aqueous dye solution comprising a) 5 to 30% by weight of an anionic or cationic direct dye, b) 0.01 to 5% by weight of the compound of formula (1), in which M represents hydrogen, an alkali metal or alkaline earth metal, ammonium or ammonium, that is mono-, di-, tri- or tetra-substituted by C-Calkyl or C-Chydroxyalkyl or mixtures thereof, c) 0 to 10% by weight of an inorganic or an organic acid, d) 0 to 20% by weight of further additives and e) water to complete to 100%, with the proviso that direct dyes of the formula (2) in which K is a residue of a coupling component of the acetoacetanilide, pyridone, pyrazolone or pyrimidine series and M is as defined above, are excluded, a process for their preparation and the use thereof for dyeing paper. 

Aqueous solutions of direct dyes

The present invention provides a composition, which comprises a latent activator. It also provides a process for the preparation of these compositions, substrates coated with these compositions and a process for their preparation, a process for preparing marked substrates using these compositions and marked substrates obtainable by the latter process.

Coating compositions comprising a latent activator for marking substrates

The invention relates to an aqueous dye solution comprising a) 5 to 30% by weight of an anionic or cationic direct dye, b) 0.1 to 10% by weight of 1-phenoxy-2-propanol, c) 0 to 20% by weight of an inorganic or an organic acid, d) 0 to 20% by weight of further additives and e) water to complete to 100%, a process for the preparation of the solution and the use thereof for dyeing paper.

1-phenoxy-2-propanol as a formulating aid for dyes

The present invention relates storage stable aqueous dye solutions comprising in which K is a residue of a coupling component of the acetoacetanilide, pyridone, pyrazolone or pyrimidine series and M is hydrogen, an alkali metal or alkaline earth metal, ammonium or alkyl ammonium, or a residue of the formula in which

Aqueous dye solutions

The present invention relates to novel yellow anionic dyes, a process for their preparation, certain novel intermediates necessary for their preparation and the use of these dyes for dyeing natural or synthetic materials, in particular, paper.

The invention relates to novel dyes of the formula (1) in which D represents a phenyl or naphthalene residue which is substituted by one or two sulphonic Acid or carboxylic acid groups and, optionally, by one or two groups selected from C-Calkyl, hydroxyl and nitro, each Rand R, independently, represent hydrogen or, a C-Calkyl group, R'represents hydrogen, hydroxyl, C-Calkyl or C-Chydroxyalkyl, Rrepresents hydrogen, C-Calkyl or phenyl, which is unsubstituted or substituted by one or two groups selected from C-Calkyl, C-Calkoxy, halogen, hydroxyl, &#x2014;NH, nitro, &#x2014;SOM and &#x2014;COM and M represents hydrogen, an alkaline or alkaline earth metal, ammonium or ammonium that is mono-, di-, tri- or tetrasubstituted by C-Calkyl or C-Chydroxyalkyl or a polyglycolammonium cation and also known dyes of formula (5), in which D&#x2032; represents a phenyl or naphthalene residue which is substituted by one or two sulphonic acid or carboxylic acid groups and, optionally, by one or two groups selected from C-Calkyl and C-Calkoxy and Rand M are as defined above, and their mixtures suitable for shading white paper, a process for shading, a process for the preparation of the novel dyes and white paper which has been treated with such shading components.

Growing community of inventors

Bottmingen, Switzerland

Adolf Käser