Patents Represented by Attorney Tyler A. Stevenson
  • Patent number: 7408077
    Abstract: The invention relates to novel compounds of the formula I, II; III or IV wherein the general symbols are as defined in claim 1. These compounds are useful as surface modifiers for polymers in order to improve resistance to fog formation or water and oil repellency.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: August 5, 2008
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Piero Piccinelli, Manuele Vitali, Andrea Landuzzi, Giovanni Da Roit, Primo Carrozza, Markus Grob, Nicola Lelli
  • Patent number: 7407519
    Abstract: A process for improving the sun protection factor (SPF) of cellulosic fibre materials and blends thereof, which comprises contacting said materials with at least one compound of the formula (1) in which M is hydrogen, an alkali metal atom, ammonium or a cation formed from an amine; R1 and R1? independently of each other are —NH—R3, —N(R3)2 or —O—R3, wherein R3 is aryl substituted by —CO—X—R5, wherein X is O or NH and R5 is optionally substituted C1-C4-alkyl, R2 is a group of formula —O—R4 wherein R4 is hydroxy alkyl, alkoxy alkyl or hydroxy alkoxy alkyl, and R2? has the meaning of R1 or R2.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: August 5, 2008
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Georges Metzger, Fabienne Cuesta
  • Patent number: 7402639
    Abstract: The present invention relates to 1-alkoxy-polyalkyl-peridine derivatives containing a structural element of formula (I) G1, G2, G3, G4 are independently C1-C6alkyl with the proviso that at least one is not methyl or G1 and G2 or G3 and G4, or G1 and G2 and G3 and G4 together form a C5-C12cycloalkyl group; G5, G6 independently are H, C1-C18alkyl, phenyl, naphthyl or a group COOC1-C18alkyl and X represents a group such that the free radical X• derived from X is capable of initiating polymerization of ethylenically unsaturated monomers, with the proviso that compounds A1 and A2 are excluded Further subjects of the invention are a polymerizable composition comprising a) at least one ethylenically unsaturated monomer and b) a 1-alkoxy-polyalkyl-piperidine derivative, a process for polymerizing ethylenically unsaturated monomers, and the use of 1-alkoxy-polyalkyl-piperidine derivatives for controlled polymerization.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: July 22, 2008
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Andreas Kramer, Peter Nesvadba
  • Patent number: 7402675
    Abstract: An amine ether of formula A wherein a is 1 or 2; and when a is 1, E is E?; when a is 2, E is L; E? is C1-C36 alkyl; C3-C18 alkenyl; C2-C18 alkinyl; C5-C18 cycloalkyl; C5-C18 cycloalkenyl; a radical of a saturated or unsaturated aliphatic bicyclic or tricyclic hydrocarbon of 7 to 12 carbon atoms; C2-C7alkyl or C3-C7alkenyl substituted by halogen; C7-C15 aralkyl or C7-C15 aralkyl substituted by C1-C4 alkyl or phenyl; or E? is a radical of formula (VII) as explained in claim 1; T? is tertiary C4-C18alkyl or phenyl, each of which are unsubstituted or substituted by halogen, OH, COOR21 or C(O)—R22; or T? is C5-C12cycloalkyl; C5-C12cycloalkyl which is interrupted by at least one O or —NR18—; a polycyclic alkyl radical having 7-18 carbon atoms, or the same radical which is interrupted by at least one O or —NR18—; or T? is —C(G1)(G2)-T?; or C1-C18alkyl or C5-C12cycloalkyl substituted by T? is hydrogen, halogen, NO2, cyano, or is a monovalent organic radical comprising 1-50 carbon atoms; or T? and T?
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: July 22, 2008
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Andreas Hafner, Hans Jürg Kirner, Franz Schwarzenbach, Paul Adriaan Van Der Schaaf, Peter Nesvadba
  • Patent number: 7390574
    Abstract: Polyolefin substrates, for example polypropylene, polyethylene or thermoplastic olefin molded parts, are made scratch resistant by the incorporation therein of an additive combination of a maleated alpha-olefin functionalized with a long chain alcohol or long chain amine and a primary or secondary fatty acid amide. The present polyolefins exhibit good weatherability, scratch resistance, good processability, good mechanical strength, good gloss retention and are non-sticky. The functionalized maleated alpha-olefin is for example the ester or half ester of maleated C18-C26 alpha-olefin with tallow fatty alcohol. The fatty acid amide is for example oleyl palmitamide or stearyl erucamide.
    Type: Grant
    Filed: February 15, 2005
    Date of Patent: June 24, 2008
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: Ashutosh H. Sharma
  • Patent number: 7390904
    Abstract: Sterically hindered N-hydrocarbyloxyamines are prepared from hindered amine N-oxyl compounds by a process which uses hydrogen peroxide or a hydrogen peroxide equivalent, a catalytic amount of a peroxide decomposing transition metal salt, metal oxide, or metal-ligand complex, a hydrocarbon solvent containing no activated hydrogen atoms, and a relatively inert cosolvent. These compounds are useful as thermal and light stabilizers for a variety of organic substrates.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: June 24, 2008
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: James P. Galbo, Robert E. Detlefsen
  • Patent number: 7384464
    Abstract: The present invention relates to an ink-jet ink, an ink-jet recording material or an ink-jet system containing at least one water-soluble hindered amine compound of the general formula (I): wherein G1 and G2 are independently alkyl 1 to 4 carbon atoms or are together pentamethylene; Z1 and Z2 are each methyl, or Z1 and Z2 together form an unsubstituted linking moiety or a linking moiety substituted by one or more groups selected from an ester, ether, hydroxy, oxo, cyanohydrin, amide, amino, carboxy or an urethane group; E is alkoxy of 1 to 18 carbon atoms, cycloalkoxy of 5 to 12 carbon atoms or aralkoxy of 7 to 15 carbon atoms, or E is —O-T-(OH)b; T is a straight or branched chain alkylene of 1 to 18 carbon atoms, cycloalkylene of 5 to 18 carbon atoms, cycloalkenylene of 5 to 18 carbon atoms, a straight or branched chain alkylene of 1 to 4 carbon atoms substituted by phenyl or by phenyl substituted by one or two alkyl groups of 1 to 4 carbon atoms; b is 1, 2 or 3 with the proviso that b cannot exceed the
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: June 10, 2008
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Mervin G. Wood, Robert E. Detlefsen, Joseph Suhadolnik, Walter Renz
  • Patent number: 7375149
    Abstract: The invention describes novel mixtures comprising i) a processing stabilizer selected from the group consisting of hydroxylamine stabilizers, nitrone stabilizers, benzofuran-2-one stabilizers and/or a compound of the formula I wherein R2 is C7-C30alkyl, R3 is C1-C30alkyl, and ii) an antistatic agent selected from the group consisting of an ethoxylated amine and/or an ethoxylated amide, as stabilizers for protecting organic materials, in particular synthetic polymers, against oxidative, thermal or lightinduced degradation
    Type: Grant
    Filed: September 2, 2003
    Date of Patent: May 20, 2008
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Bruno Rotzinger, Kurt Hoffmann, Dietmar Mäder, Neil Dunski
  • Patent number: 7374387
    Abstract: A method and an arrangement are provided for emptying a Big Bag or similar transport container which is filled with pourable, especially pulverized goods which are not to come into contact with their surroundings, wherein the Big Bag is inserted in a sluice means (2) which is closed off from the surroundings, with simultaneous sealing of the sluice means, which communicates with a processing container (3) for receiving the contents of the Big Bag, whereupon the Big Bag is cut open inside the sluice means by a cutting means (6) provided therein. The empty Big Bag is compressed in a removal zone (A) inside the sluice means (2) and removed into a plastic sack (8) attached to the sluice means (2).
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: May 20, 2008
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Rolf Strub, Wan-Chang Chiu
  • Patent number: 7368525
    Abstract: The instant invention pertains to polymeric alkoxyamines, which are prepared by atom transfer radical addition polymerization (ATRA). Further aspects of the invention are a process for their preparation and their use as light stabilizers, flame retardants and polymerization regulators/initiators in controlled radical polymerization processes. Yet another aspect of the invention are novel monomeric intermediate alkoxyamines, which are also useful as polymerization regulators/initiators.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: May 6, 2008
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Peter Nesvadba, Lucienne Bugnon
  • Patent number: 7361291
    Abstract: Polymer compositions comprising a) a polymer substrate selected from the group consisting of the polyolefins, polyesters, polyamides and polylactic acids and b) a combination of i) at least one permanent antistatic additive selected from the group consisting of the polyetheresteramides and ii) at least one migratory antistatic additive selected from the group consisting of the alkylsulfonic acid salts, the alkyl diethanolamines and the alkyl diethanolamides, are effectively antistatic.
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: April 22, 2008
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Hui Chin, Christopher J. Fagouri
  • Patent number: 7361755
    Abstract: This invention pertains to a novel process for preparing sterically hindered N-substituted alkyloxyamines from alkenes by the transition-metal-catalyzed reaction of a intermediate alkylborane with a sterically hindered nitroxyl radical.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: April 22, 2008
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Stephen Daniel Pastor, Sai Ping Shum
  • Patent number: 7358311
    Abstract: The instant invention relates to a process for crosslinking unsaturated polymer resins as e.g. unsaturated polyesters using hydroxyamine esters as radical source. Further aspects of the invention are a composition comprising unsaturated polymer resins as e.g. unsaturated polyester resins and a hydroxylamine ester and the use of hydroxylamine esters for crosslinking unsaturated polymers.
    Type: Grant
    Filed: September 17, 2002
    Date of Patent: April 15, 2008
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Michael Roth, Dirk Simon
  • Patent number: 7341607
    Abstract: The present invention relates to novel yellow anionic dyes, a process for their preparation, certain novel intermediates for their preparation and the use of these dyes for dyeing natural or synthetic materials, in particular, paper.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: March 11, 2008
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Michael Lennartz, Adolf Käser, Sandra Weiss
  • Patent number: 7326740
    Abstract: Disclosed are natural products composites protected against the deleterious effects of microorganisms comprising at least one natural product, at least one thermoplastic resin, and an effective amount of an antifungal agent. The composites are further advantageously protected against weathering and color formation by the incorporation therein of at least one light stabilizer and at least one compound selected from the group consisting of the oxides, hydroxides or silicates of Ca, Mg, Al and Zn. The light stabilizers are selected from the group consisting of the ultraviolet light absorbers and the sterically hindered amines. The metal oxide is for example CaO. The natural products are for example wood flour, flax, hemp, jute, kenaf, or rice husk. The thermoplastic resin is for example polyethylene or polypropylene. The antifungal agent and potential coadditives are incorporated via melt processing such as extrusion, co-kneading, pultrusion and injection molding.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: February 5, 2008
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Urs Stadler, Gerry Capocci, Shing Li, Melinda Reyes, Heinz Herbst
  • Patent number: 7323505
    Abstract: The present invention relates to aqueous dispersions for solid phenolic antioxidants, wherein the antioxidants are dispersed in the aqueous phase with polyvinyl alcohol as dispersing agent. The invention also relates to a process, which comprises stabilising a polymer material against oxidative, thermal or light-induced degradation by adding to the polymer the aqueous dispersion.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: January 29, 2008
    Assignee: Ciba Specialty Chemicals Corp.
    Inventor: Daniel Thibaut
  • Patent number: 7323517
    Abstract: The present invention relates to a composition and process for enhancing the controlled radical polymerization in the presence of nitroxyls and nitroxylethers by adding a chain transfer agent selected from the group consisting of mercaptanes, thioethers and disulfides to the polymerizable mixture. A further subject of the invention is the use of mercaptanes, thioethers and disulfides for increasing rate and yield of controlled radical polymerizations in the presence of a nitroxyl or a nitroxylether.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: January 29, 2008
    Assignee: Ciba Specialty Chemicals Corp
    Inventors: Wiebke Wunderlich, Rudolf Pfaendner
  • Patent number: 7323502
    Abstract: Organic polymeric substrates, for example polyolefins such as polypropylene, can be made flame retardant by the incorporation of a synergistic mixture of (i) at least one compound selected from the group consisting of the (a) sterically hindered nitroxyl stabilizers, (b) sterically hindered hydroxylamine stabilizers and (c) sterically hindered alkoxyamine stabilizers and (ii) at least one phosphazene flame retardant. Advantageously, a further flame retardant may be added, without the need of adding an antimony synergist. The compositions of the invention combine good flame retardant properties with light stability and good mechanical properties.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: January 29, 2008
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: Nikolas Kaprinidis
  • Patent number: 7314839
    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: July 20, 2005
    Date of Patent: January 1, 2008
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Colin J. H. Morton, Thomas Thompson, Ashutosh H. Sharma
  • Patent number: 7297819
    Abstract: The present invention relates to open chain alkoxyamine compounds, a polymerizable composition comprising a) at least one ethylenically unsaturated monomer and b) at least one open chain alkoxyamine compound. Further aspects of the present invention are a process for polymerizing ethylenically unsaturated monomers, and the use of open chain alkoxyamine compounds for controlled polymerization. The intermediate N-oxyl derivatives, a composition of the N-oxyl derivatives with ethylenically unsaturated monomers and a free radical initiator X, as well as a process and their use for polymerization are also subjects of the present invention.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: November 20, 2007
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Tobias Hintermann, Peter Nesvadba, Andreas Kramer, Jochen Fink