Patents Represented by Attorney Thomas C. Doyle
  • Patent number: 4864007
    Abstract: Diallylamine compounds may be polymerized to water-soluble, linear, high-molecular weight polymers having low residual monomer content by the use of cationic azo initiators and phosphorous acid or a derivative thereof as regulator. The polymers are useful as pre- or after-treatment agents for anionic dyeings on textile substrates.
    Type: Grant
    Filed: June 30, 1987
    Date of Patent: September 5, 1989
    Assignee: Sandoz Ltd.
    Inventor: Eckart Schleusener
  • Patent number: 4859725
    Abstract: A compound of formula I ##STR1## in which R to R.sub.5 are organic radicals, for use as a light stabilizer in polymeric systems.
    Type: Grant
    Filed: August 23, 1988
    Date of Patent: August 22, 1989
    Assignee: Sandoz Ltd.
    Inventor: Lajos Avar
  • Patent number: 4852991
    Abstract: The invention relates to a process for dyeing synthetic or natural polyamide fibers with anionic dyestuffs, comprising (i) bringing the polyamide fibers into contact with an aqueous dyeing liquor which contains in addition to one or more dyestuffs a cationic dyeing assistant having affinity for anionic polyamide dyestuffs, and dyeing the polyamide fibers at a temperature of from 60.degree. to 105.degree. C., and (ii) adding an anionic dyeing assistant to the dyeing liquor 15 to 60 minutes after reaching the dyeing temperature, to complete the dye exhaustion. Surface and fibre level dyeings with a good dye penetration are thus obtained.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: August 1, 1989
    Assignee: Sandoz Ltd.
    Inventors: Josef Frauenknecht, Dieter Schwer
  • Patent number: 4845256
    Abstract: The invention relates to a process for the production of silyl quaternary ammonium compounds comprising reacting a tertiary amine with a trialkoxy silane in the presence of a catalytic amount of an alkali metal or earth alkali metal iodide. The resulting compounds can be used directly without a further purification step.
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: July 4, 1989
    Assignee: Sanitized Ag
    Inventors: Bruno Mebes, Christine Ludi
  • Patent number: 4838896
    Abstract: A mixture of a textile auxiliary (T) obtained by reacting epichlorohydrin and ammonia in defined mole ratio, and a polymeric compound (P) which is a water-soluble homopolymer of a mono- or di-allylamine, or a water-soluble copolymer consisting of mono-, di- or tri-allylamine units may be used as an aftertreatment agent for fixation of anionic and sulphur dyeings on cellulosic fibres. The treated dyeings have better fastness properties than dyeings treated with either (T) or (P) alone.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: June 13, 1989
    Assignee: Sandoz Ltd.
    Inventors: Bruno Kissling, Tibor Robinson
  • Patent number: 4838943
    Abstract: A pigment, which retains a crystal or particulate structure throughout a process of coloration of a substrate, containing one or more 2,2,6,6-tetraalkylpiperidien groups.
    Type: Grant
    Filed: April 8, 1987
    Date of Patent: June 13, 1989
    Assignee: Sandoz Ltd.
    Inventors: Peter Bitterli, Manfred Geisel, Jurgen Goldmann, Bansi L. Kaul
  • Patent number: 4834769
    Abstract: Dye compositions containing (a) at least one blue sulpho group-containing triphendioxazine dye and (b) at least one blue sulpho group-containing anthraquinone dye and preferably (c) lignine sulphonic acid or a salt of it and optionally (d) a non-ionic blending agent are outstandingly suitable for the level and fast dyeing of leather substrates.
    Type: Grant
    Filed: December 8, 1987
    Date of Patent: May 30, 1989
    Assignee: Sandoz Ltd.
    Inventors: Michel Dien, Herbert Holliger
  • Patent number: 4834896
    Abstract: Compositions comprising(a) phosphoric acid partial esters of oxyalkylated C.sub.14-20 -fatty alcohols and(b) phosphoric acid partial esters of non-oxyalkylated C.sub.12-20 -fatty alcoholsoptionally together with(c) a hydrophilic non-ionic or anionic surfactant different from (a) a (b)but essentially free of optionally chemically modified natural leather-fatting agentsare excellently suitable for the softening and fatting of leather without admixture of optionally chemically modified natural leather fatting agents.
    Type: Grant
    Filed: December 2, 1987
    Date of Patent: May 30, 1989
    Assignee: Sandoz Ltd.
    Inventor: Markus Badertscher
  • Patent number: 4832700
    Abstract: A fluidized bed apparatus comprises a chamber having a perforated floor, a spray nozzle located in the chamber above the perforated floor, whereby material to be granulated is introduced into the chamber in the form of a solution or dispersion, means for passing heated gas upward through said perforated floor, whereby solid particles of said material are formed in said chamber, particle size-reducing means outside of said chamber, whereby particles larger than a first predetermined size are reduced in size, a screw shaft located above said perforated floor and communicating with said size-reducing means, whereby particles are withdrawn from said chamber and conveyed to said size-reducing means, a pipe having one end located downstream of said size-reducing means and its other end communicating with said chamber, and means for generating a flow of air whereby particles smaller than a second predetermined size exiting from said size-reducing means are returned through said pipe to said chamber.
    Type: Grant
    Filed: July 9, 1984
    Date of Patent: May 23, 1989
    Assignee: Sandoz Ltd.
    Inventors: Jan Kaspar, Pierre Schmid
  • Patent number: 4830764
    Abstract: The invention relates to phosphoric acid partial esters derived from a block ethoxylated and propoxylated C.sub.9-16 aliphatic alcohol. These phosphoric acid partial esters are useful as wetting agents, especially in the pre-treatment of cellulosic textile materials.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: May 16, 1989
    Assignee: Sandoz Ltd.
    Inventor: Achim Wiedemann
  • Patent number: 4801303
    Abstract: Polyester-cotton blend textile substrates are dyed with a disperse dye and then with a sulfur dye from the same dyebath which is maintained at a temperature no higher than 105.degree. C. when the sulfur dye is present therein and which preferably contains glucose as the reducing agent for the sulfur dye.
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: January 31, 1989
    Assignee: Sandoz Ltd.
    Inventors: Mark S. Carlough, Laszlo A. Meszaros
  • Patent number: 4797131
    Abstract: Leather, hides, skins or fur-skins are treated before and/or during dyeing with basic dyes, with a compound of formula I ##STR1## in which R.sub.1 is a C.sub.8-18 aliphatic residue;each R.sub.2, independently, is C.sub.1-4 alkyl;R.sub.3 is a C.sub.1-18 aliphatic residue or --CH.sub.2 -R.sub.4 where R.sub.4 is phenyl; phenyl substituted by up to two substituents selected from the group consisting of chlorine, bromine, methyl, methoxy and ethoxy; or naphthyl; andX is an anion,or a mixture thereof. Dyeings with improved levelness and reproducibility are thus obtained.
    Type: Grant
    Filed: February 19, 1987
    Date of Patent: January 10, 1989
    Assignee: Sandoz Ltd.
    Inventor: Hans-Peter Baumann
  • Patent number: 4780492
    Abstract: A liquid concentrate comprising an oxamide and a 2,2,6,6-tetraalkylpiperidine compound dissolved in an organic solvent is useful for the UV-stabilization of hardenable liquid finishes, particularly automotive finishes.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: October 25, 1988
    Assignee: Sandoz Ltd.
    Inventor: Lajos Avar
  • Patent number: 4780222
    Abstract: A water soluble or water dispersible composition containing(a) at least one phosphoric acid partial ester(b.sub.1) at least one mono- or di-(C.sub.2-3 alkylene) glycol mono-(C.sub.1-4 -alkyl) ether or at least one aliphatic C.sub.4-6 alcohol or a mixture thereof(b.sub.2) mono- or diethylene glycol or a mixture thereof(c) at least one aromatic-free or aromatic-poor hydrocarbon oil, and(d) a water miscible alkanolamine,the phosphoric acid partial ester (a) being dispersed or dissolved in the mixture (b.sub.1)+(b.sub.2)+(c), and component (a) being at least partially neutralized in salt form, with the proviso that the composition has a water content .ltoreq.5% by weight.It is useful as fatting agent for fatting leather.
    Type: Grant
    Filed: February 12, 1987
    Date of Patent: October 25, 1988
    Assignee: Sandoz Ltd.
    Inventor: Werner Amati
  • Patent number: 4780494
    Abstract: An aqueous dispersion comprising one or more 2,2,6,6-tetraalkylpiperidine compounds having a molecular weight 2000 or less than 2000 and a melting point of 100.degree. C. or more, one or more cationic, non-ionic and/or anionic dispersing agents and an aqueous medium. These dispersions are suitable for use as light stabilizers in aqueous systems.
    Type: Grant
    Filed: April 11, 1985
    Date of Patent: October 25, 1988
    Assignee: Sandoz Ltd.
    Inventors: Erwin Hess, Rainer Wolf
  • Patent number: 4778476
    Abstract: A method of fatting tanned leather substrates comprising(a) applying to the substrate as the fatting agent an aqueous solution or dispersion of an ortho-phosphoric acid partial ester having attached to the phosphorus atom an average 1 to 2 (which may be a non-integral number) groups of the formula I ##STR1## where each A independently is ##STR2## and n is a number from 2 to 10 with the proviso that 2 to 6 groups A are --(CH.sub.2).sub.2,R is an unsubstituted linear or branched (preferably linear) C.sub.14-20 alkyl group or an unsubstituted linear or branched (preferably linear) C.sub.14-20 alkenyl group,the phosphoric acid partial ester being in free acid or salt form;(b) treating with an agent selected from polyvalent metal oxide, hydroxide and salt, at the same time as fatting or after fatting.
    Type: Grant
    Filed: July 10, 1986
    Date of Patent: October 18, 1988
    Assignee: Sandoz Ltd.
    Inventor: Werner Amati
  • Patent number: 4774332
    Abstract: A compopund containing one or more units of formula I ##STR1## in which R.sub.1 is --CH.sub.2 C.sub.1-4 alkyl or --CH.sub.3 or both groups R.sub.1 form --(CH.sub.2).sub.5 --;R.sub.2 is --CH.sub.2 C.sub.1-4 alkyl or --CH.sub.3 or both groups R.sub.2 form --(CH.sub.2).sub.5 --;R.sub.3 is furylmethyl, unsubstituted C.sub.1-18 alkyl; C.sub.1-4 alkyl monosubstituted by phenyl, the phenyl group of which is unsubstituted or substituted by 1 to 3 groups selected from --OH and C.sub.1-8 alkyl; C.sub.2-8 alkyl monosubstituted by C.sub.1-4 alkoxy; phenyl, unsubstituted or substituted by 1 to 3 groups selected from C.sub.1-8 alkyl and --OH; or cyclohexy, unsubstituted or monosubstituted by C.sub.1-8 alkyl or --OH.These compounds are useful as light stabilizers for polymeric material.
    Type: Grant
    Filed: July 11, 1986
    Date of Patent: September 27, 1988
    Assignee: Sandoz, Ltd.
    Inventor: Lajos Avar
  • Patent number: 4764176
    Abstract: The invention relates to a method for preventing the brightening effect of an optical brightening agent on a textile substrate comprising applying on the textile substrate a water-soluble, cationic, optical brightener quencher either before or together with a resin precursor and submitting the treated substrate to a heat treatment. This method imparts an antibrightening effect to goods when they are washed with an optical brightener containing detergent.
    Type: Grant
    Filed: July 16, 1986
    Date of Patent: August 16, 1988
    Assignee: Sandoz Ltd.
    Inventor: Toshinobu Sakamoto
  • Patent number: 4764585
    Abstract: Cationic fixing agents based on the reaction products of(a) a monofunctional or polyfunctional amine having one or more primary and/or secondary and/or tertiary amino groups and(b) cyanamide, dicyandiamide, guanidine or bisguanidinegive improved results when the reaction takes place in the presence of a catalyst (K) selected from metals, metal salts and heterocyclic nitrogen-containing organic bases, particularly zinc chloride.
    Type: Grant
    Filed: September 15, 1987
    Date of Patent: August 16, 1988
    Assignee: Sandoz Ltd.
    Inventors: Jurg Heller, Bruno Kissling, Curt Muller, Tibor Robinson, Salvatore Valenti
  • Patent number: 4759801
    Abstract: A method for preparing a pigment preparation comprising kneading a pigment presscake (comprising a pigment and water and/or one or more organic liquids) at a temperature in the range 80.degree. to 200.degree. C. under vacuum together with a thermoplastic material, thereby at the same time removing the water and/or any organic liquids present. These preparations are useful for coloring polymeric material.
    Type: Grant
    Filed: July 10, 1986
    Date of Patent: July 26, 1988
    Assignee: Sandoz Ltd.
    Inventors: Jurgen Goldmann, Bansi L. Kaul