Patents Assigned to Ciba Specialty Chemicals Corporation
  • Patent number: 8404624
    Abstract: The invention relates to an additive composition, which comprises an additive mixture that essentially consists of a) At least one ammonium phosphate ester; b) At least one thiophosphoric acid ester, and c) At least one dithiophosphoric acid derivative; in combination with sulphur containing oil additives; and a process for the reduction of wear in combustion engines, such as spark ignition or Diesel motor engines.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: March 26, 2013
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: Marc Ribeaud
  • Patent number: 8329625
    Abstract: The present invention relates to an aqueous functional fluid comprising an antioxidant of the hindered phenol type and a water-soluble polyalkylene glycol. The aqueous functional fluids are especially suitable for use as hydraulic or metal working fluids. The present invention also relates to the use of the aqueous functional fluid for improving the performance properties of hydraulic or metal working fluids.
    Type: Grant
    Filed: May 3, 2010
    Date of Patent: December 11, 2012
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Peter Rohrbach, Samuel Evans, Stefan Laeuger
  • Patent number: 7875676
    Abstract: The present invention is directed to a method for preparing a cellulose reactive adduct of polyvinylamide and a composition resulting from the method. The preparation of the cellulose reactive adduct is carried out close to a Critical Concentration defined herein. When the reaction is run close to this Critical Concentration, the risk of gelation is minimized, consumed glyoxal is maximized, and shelf live is enhanced. Additionally, the glyoxalated vinylamides of the present invention impart improved wet and dry strengthening efficiency to paper and paperboard when compared to adducts disclosed in previously described art.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: January 25, 2011
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: Matthew D. Wright
  • Patent number: 7871642
    Abstract: A nanodispersion comprises (a) a membrane-forming molecule, (b) a coemulsifier and (c) a lipophilic component, in pharmaceutical end formulations, the nanodispersion being obtainable by (?) mixing the components (a), (b) and (c) until a homogeneous clear liquid is obtained, and (?) adding the liquid obtained in step (?) to the water phase of the pharmaceutical end formulations, where steps (?) and (?) may be carried out without high energy mixing or homogenization. The nanodispersions prepared according to this invention are suitable as transport vehicles for pharmaceutical active agents.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: January 18, 2011
    Assignees: Ciba Specialty Chemicals Corporation, Vesifact AG
    Inventors: Andreas Werner Supersaxo, Hans Georg Weder, Dietmar Hüglin, Joachim Friedrich Röding
  • Patent number: 7842630
    Abstract: The present invention is aimed at a method of providing wettability to polyester fibers or filaments, to woven or nonwoven fabrics made therefrom and to resultant articles of manufacture. The method comprises melt extruding a mixture comprising a polyester and one or more alkyl metal sulfonates where the metal is Na, Li or K and the alkyl is straight or branched chain alkyl of 12 to 15 carbon atoms, or is straight or branched chain alkenyl of 12 to 18 carbon atoms. The alkyl metal sulfonates are present from about 2% to about 5% by weight based on the weight of the polyester. A post treatment step such as an alkaline treatment step is not included. The melt extrusion mixtures do not include certain additives such as polyoxyalkylene compounds, alkylmonoethonolamide compounds, alkyldiethanolamine compounds and polyetheramide compounds.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: November 30, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Colin J. H. Morton, Thomas Thompson, Ashutosh H. Sharma
  • Patent number: 7776182
    Abstract: Selected chlorohydrin and cationic compounds containing nitroxide or hydroxylamine moieties are effective in stabilizing pulp or paper, especially pulp or paper containing lignin, against yellowing and discoloration due to the adverse effects of light. These compounds are added at various points in the paper-making process, especially at the wet ends, making the need for water soluble or water dispersible materials having high affinity for pulp or paper essential. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents and metal chelating agents. Combinations of hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: August 17, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Glen T. Cunkle, David Devore, Thomas F. Thompson
  • Patent number: 7754877
    Abstract: The invention relates to a process for the preparation of reactive cyclodextrins, in which process the cyclodextrins CD are reacted with a bifunctional alkyl compound X—(CH2)n—Y, wherein X is a group which reacts with CD, n is an integer from 2 to 20 and Y is a group which reacts with a group Z or is a group-Reactive which is capable of reaction with cellulosic or proteinic materials and, optionally, in a further step, insofar as Y is a group which reacts with a group Z, the resulting product is reacted with a reactive anchor compound Z-Reactive to form the reactive cyclodextrin, and also to reactive cyclodextrins prepared in accordance therewith, to materials dressed therewith and to the use thereof.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: July 13, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Andreas Schmidt, Hans-Jürgen Buschmann, Dierk Knittel, Eckhard Schollmeyer
  • Patent number: 7731791
    Abstract: The present invention relates to the field of color filters and LCDs.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: June 8, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Takashi Deno, Thomas Eichenberger, Joachim Voigt
  • Patent number: 7731985
    Abstract: A method is provided for the antimicrobial treatment of a surface which comprises the contacting a surface with substituted 4-aminopyrimidines.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: June 8, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Sophie Marquais-Bienewald, Werner Hölzl, Wolfgang Haap, Andrea Preuss, Andreas Mehlin
  • Patent number: 7731820
    Abstract: The invention relates to a composition comprising a) at least one water-soluble fluorescent whitening agent, b) a polymer formed from an ethylenically unsaturated monomer or monomer blend, characterized in that at least one monomer is acrylamide and the water-soluble polymer has an average (weight average) molecular weight of between 500 and 49,000, optionally, c) polyethylene glycol with a weight average molecular weight of between 500 and 6000 and d) water and the use of the composition for the fluorescent whitening of paper in coating and size press or film press applications.
    Type: Grant
    Filed: October 17, 2005
    Date of Patent: June 8, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Robert Cockcroft, Ted Deisenroth, Peter Rohringer, Winfried Steffen
  • Patent number: 7732504
    Abstract: The invention relates to novel photoinitiators of formula (I) wherein each of the substituents is given the definition as set forth in the Specification and the claims. The photoinitiators can be used to prepare multifunctional photoinitiators.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: June 8, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Kurt Dietliker, Rinaldo Hüsler, Jean-Luc Birbaum, Jean-Pierre Wolf
  • Patent number: 7722893
    Abstract: The use of 2,4—bis(alkylamino)pyrimidines of formula (1) R1 is C1-C12alkyl or C6-C10laryl; R2 is hydrogen or C1-C12alkyl; or R1 and R2 together form a radical of formula (1a) R? and R? are each independently of the other hydrogen, C1-C6alkyl or C1-C6alkoxy, R3 and R5 are each independently of the other hydrogen or C1-C8alkyl; R4 is C1-C20alkyl, unsubstituted phenyl, C6-C10aryl, C6-C10aryl-C1-C6alkyl, hydroxy-C1-C6alkyl, di-C1-C6alkylamino-C 1-C6alkyl, mono-C1-C6alkylamino-C1-C6alkyl, —(CH2)2-(O—(CH2)2)1-4—OH or —(CH2)2—(O—(CH2)2)1-4—NH2; R6 is C1-C20alkyl, C6-C10aryl, C6-C10aryl-C1-C6alkyl, hydroxy-C1-C6alkyl, di-C1C6alkylamino-C1-C6alkyl, mono- C1-C6alkylamino-C1-C 6alkyl, —(CH2)2—(O—(CH2)2)1-4—OH or —(CH2)2—(O—(CH2)2)1-4—NH2; or R3 and R 4 and/or R5 and R6, together form a pyrrolidine, piperidine, hexamethyleneimine or morpholine ring; in the antimicrobial treatment of surfaces.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: May 25, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Sophie Marquais-Bienewald, Werner Hölzl, Andrea Preuss, Andreas Mehlin
  • Patent number: 7723397
    Abstract: The invention relates to novel photoinitiators of formula (I) wherein A is —O—, —CH2?, CH(CH3)— or —C(CH3)2?, and R is methyl or trimethylsilyl, and R may in addition be hydrogen when A is simultaneously the group —C(CH3)2?. The invention relates also to compositions comprising (A) at least one ethylenically unsaturated compound, (B) a photoinitiator of formula (I), (C) optionally further binders or additives, (D) optionally further photoinitiators or co-initiators. Compositions comprising (A) an ethylenically unsaturated compound that contains at least one aminoacrylate, (B) a photoinitiator of formula (II) or (III), (C) optionally further binders or additives, (D) optionally further photoinitiators or co-initiators.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: May 25, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Rinaldo Hüsler, André Fuchs
  • Patent number: 7723530
    Abstract: The present invention relates to the use of polymerisable diketopyrrolopyrroles in colour filters, which can themselves be used for example in electro-optical systems such as TV screens, liquid crystal displays, charge coupled devices, plasma displays or electroluminescent displays and the like. In contrast to conventional pigments the polymerisable diketopyrrolopyrroles do not tend to aggregate and, hence, show very good dispersibility. Color filters prepared by using the polymerisable diketopyrrolopyrroles have high transparence and pure hue. In addition, they facilitate adjustment of color points and enable a large choice of shades.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: May 25, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Jean-Marie Adam, Gerardus De Keyzer
  • Patent number: 7723425
    Abstract: The present invention relates to a composition containing modified block copolymer dispersants and dispersible inorganic or organic pigments. The block copolymers are prepared by atom transfer radical polymerisation (ATRP) and modified with a salt forming group. The pigment composition is useful for preparing coating compositions, prints, images, inks or lacquers and other disperse systems.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: May 25, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Clemens Auschra, Ernst Eckstein, Marie-Odile Zink, Andreas Mühlebach
  • Patent number: 7723399
    Abstract: The invention relates to novel N-substituted imides and polymerizable compositions comprising these N-substituted imides. The invention further relates to the use of N-substituted imides as polymerization initiators.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: May 25, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Peter Nesvadba, Johannes Benkhoff, Lucienne Bugnon, Karin Powell, Tunja Jung
  • Patent number: 7723412
    Abstract: The instant invention discloses a nanocomposite material comprising (a) a synthetic polymer, (b) a natural or synthetic phyllosilicate or a mixture of such phyllosilicates in nanoparticles, (c) a phenolic antioxidant and/or a processing stabilizer, and (d) a mono or polyfunctional compound selected from the class consisting of the epoxides, oxazolines, oxazolones, oxazines, isocyanates and/or anhydrides.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: May 25, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Hendrik Wermter, Rudolf Pfaendner
  • Patent number: 7723398
    Abstract: The invention relates to a radiation curable coating or an ink composition comprising a photoinitiator and a stabilizer blend of a sterically hindered nitroxyl radical and a quinone methide.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: May 25, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Stephan Ilg, Edith Pighetti, Peter Nesvadba, André Fuchs
  • Patent number: 7723494
    Abstract: 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.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: May 25, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Michael Lennartz, Adolf Käser, Sandra Weiss
  • Patent number: 7723521
    Abstract: A novel semiconductor device comprises an azaperylene organic semiconductor of the formula I wherein the substitutents are defined herein.
    Type: Grant
    Filed: May 3, 2006
    Date of Patent: May 25, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Frank Bienewald, Beat Schmidhalter, Ulrich Berens, Hans Jürg Kirner