Patents Represented by Attorney Thomas C. Doyle
  • Patent number: 4548609
    Abstract: Disclosed is a method for marking mineral tanned leather by treating the unfinished leather with an anionic aqueous dispersion of a fluorescent pigment. The marked leather can then be sorted by exposure to UV-radiation.
    Type: Grant
    Filed: January 12, 1984
    Date of Patent: October 22, 1985
    Assignee: Sandoz Ltd.
    Inventor: Alfred Schone
  • Patent number: 4548902
    Abstract: Dyeings on cellulose with direct or reactive dyestuffs are given improved wet fastness properties by aftertreatment with a reaction product or mixture of a polybasic amino compound (A) with an N-methylol compound (B) or with formaldehyde or a formaldehyde donor and optionally a crosslinking catalyst (C). Particular direct or reactive dyestuffs and polybasic amino compounds are determined to be suitable in the dyeing and aftertreatment when the dyestuff and the polybasic amino compound (A) are such that when mixed together in aqueous solution they give a precipitate which, after washing and drying does not redissolve in aqueous alkali at pH.gtoreq.12 at room temperature.
    Type: Grant
    Filed: June 1, 1983
    Date of Patent: October 22, 1985
    Assignee: Sandoz Ltd.
    Inventors: Rolf Hasler, Francis Palacin
  • Patent number: 4543128
    Abstract: Coloring compositions comprising an aqueous paste or dispersion of a filler which has been dyed with a water-soluble polycationic dyestuff, preferably together with a binding agent, are used in the coating of paper and the fixing, dyeing and printing of non-woven fabrics, including tissue paper.
    Type: Grant
    Filed: August 23, 1983
    Date of Patent: September 24, 1985
    Assignee: Sandoz Ltd.
    Inventors: Juerg Troesch, Walter Portmann
  • Patent number: 4543103
    Abstract: A glass substrate is dyed or printed with a water-soluble polycationic dyestuff in the absence of a size or binding agent. The resulting dyeings have good rubbing fastnesses.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: September 24, 1985
    Assignee: Sandoz Ltd.
    Inventor: Jurg Troesch
  • Patent number: 4531979
    Abstract: Anodically oxidized aluminium or aluminium alloy surfaces are sealed in the presence of an anti-smut agent which is a colorless, light-fast, organic compound having a molecular weight of at least 350 and containing(i) at least one sulphonic acid group; and(ii) a carboxy group and a hydroxy group both aromatically bound and located ortho- to each other on the same aromatic ring, preferably a benzene ring.
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: July 30, 1985
    Assignee: Sandoz Ltd.
    Inventors: Hans Bohler, Ernst Weisskopf
  • Patent number: 4532287
    Abstract: Compositions for flameproofing polymeric material comprising:(a) a halogenated alkylaryl ether, the aryl group of which may be substituted by halogen;(b) an organo-tin compound; and(c) a sterically hindered phenol or a bisphenol containing a sterically hindered --OH group on each phenyl.In this specification by the term "bisphenol" is meant a compound containing two phenol groups linked by a bridging group that is not attached to any other bisphenol groups and by the term "phenol" is meant compounds containing only a single phenol group.
    Type: Grant
    Filed: May 11, 1984
    Date of Patent: July 30, 1985
    Assignee: Sandoz Ltd.
    Inventors: Rudolf Bill, Rainer Wolf
  • Patent number: 4529754
    Abstract: A lacquer composition comprising a water soluble reaction product of(a) a water soluble acrylic polymer or copolymer having pendant amine groups, and(b) a glycidyl ether of a di- or polyhydric alcohol or monomeric phenolic compound having 2-4 aromatic hydroxy groupswith the proviso that per amine equivalent of component (a) 0.5-0.85 epoxide equivalents of component (b) are present, the reaction product being hardened by a mixture of component (b) above and a glycidyl ether of a polymeric phenol-aldehyde condensate or of polyamine derived from ethyleneimine and/or propyleneimine.The composition is useful for coating such substrates as leather.
    Type: Grant
    Filed: November 9, 1982
    Date of Patent: July 16, 1985
    Assignee: Sandoz Ltd.
    Inventor: Werner Walther
  • Patent number: 4526963
    Abstract: Disclosed are dioxazine compounds of formula I ##STR1## in which each R, independently, is C.sub.1-4 alkyl, their production and use as pigments.
    Type: Grant
    Filed: October 28, 1982
    Date of Patent: July 2, 1985
    Assignee: Sandoz Ltd.
    Inventor: Michel Deur
  • Patent number: 4526976
    Abstract: Compounds of formula I ##STR1## in which X is O or S;Y is O, S or NR.sub.3 where R.sub.3 is hydrogen or C.sub.1-4 alkyl (preferably methyl or ethyl) and rings A and B may be further substituted by non-chromophoric substituents.
    Type: Grant
    Filed: March 30, 1983
    Date of Patent: July 2, 1985
    Assignee: Sandoz Ltd.
    Inventors: Fritz Fleck, Alec V. Mercer, Malcolm Oates
  • Patent number: 4516979
    Abstract: The invention relates to a method of dyeing or printing a textile substrate with disperse dyes, using as a dyeing assistant the product of polyesterifying an aliphatic polyol or etherpolyol or a disaccharide with benzoic acid or substituted benzoic acid.
    Type: Grant
    Filed: December 23, 1982
    Date of Patent: May 14, 1985
    Assignee: Sandoz Ltd.
    Inventor: Hans-Peter Baumann
  • Patent number: 4511707
    Abstract: The wet fastness properties of direct or reactive dyeings on cellulosic substrates are improved by aftertreatment with a precondensate of(A) the product of reacting a mono- or polyfunctional primary or secondary amine with cyanamide, dicyandiamide (DCDA), guanidine or biguanidine; or ammonia with cyanamide or DCDA; whereby up to 50 mole % of the cyanamide, DCDA, guanidine or biguanide may be replaced with a dicarboxylic acid or a mono- or di-ester thereof, said product (A) containing reactive hydrogen atoms bound to nitrogen, and either(B) an epihalohydrin or a precursor thereof, or(C) formaldehyde or a formaldehyde precursor, or(D) a dihydroxyalkyleneurea or a methyl ether thereof,followed by formaldehyde or a formaldehyde precursor optionally together with(E) an N-methylol derivative of a urea, melamine, guanamine, triazinone, urone, carbamate or acid amideand, if (A) is used with (C) or (D), or if (E) is present, together with(F) a catalyst for the cross-linking of N-methylol compounds of the type (E) abov
    Type: Grant
    Filed: January 25, 1984
    Date of Patent: April 16, 1985
    Assignee: Sandoz Ltd.
    Inventors: James R. Runyon, Salvatore Valenti
  • Patent number: 4503191
    Abstract: Textile materials, preferably carpets, are backsized with a composition comprising(a) a natural or synthetic polymeric latex(b) a filler, and(c) a fixing agent for anionic dyestuffs.The resulting textile materials are fast to water spotting.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: March 5, 1985
    Assignee: Sandoz Ltd.
    Inventor: Hans-Peter Stakelbeck
  • Patent number: 4501589
    Abstract: A process for dyeing or printing sized textiles comprising applying to the sized substrate a dyeing liquor or a printing paste which contains, in addition to the dyestuffs(i) a compound or a mixture of compounds selected from compounds having solubilizing, washing, emulsifying, dispersing or dye fixation accelerating properties, and(ii) a textile size or a mixture of textile sizes.
    Type: Grant
    Filed: June 10, 1983
    Date of Patent: February 26, 1985
    Assignee: Sandoz Ltd.
    Inventor: Christian Oschatz
  • Patent number: 4501672
    Abstract: A fluid loss reducing additive for an oil-based well working fluid is the product of mixing together, in an oil or oil-based fluid, lignite or humic acid with an aliphatic amide or hydroxyamide, or a cyclic derivative thereof, containing no primary or secondary amine or amine salt groups.
    Type: Grant
    Filed: March 25, 1983
    Date of Patent: February 26, 1985
    Assignee: Sandoz Ltd.
    Inventors: David L. Connell, Jacqueline A. Coates
  • Patent number: 4499018
    Abstract: A phthalocyanine product in which at least two phthalocyanine groups which may be metallized or unmetallized are joined by a bridging group, the bridging group being attached to the phthalocyanine groups through --CH.sub.2 --X.sub.o -- linkages where X.sub.o is a basic group and the phthalocyanine groups are attached to the methylene group of the linkages. The phthalocyanine product is useful as a dyestuff.
    Type: Grant
    Filed: October 15, 1982
    Date of Patent: February 12, 1985
    Assignee: Sandoz Ltd.
    Inventors: Jacky Dore, Helmut Moser
  • Patent number: 4496364
    Abstract: A process for dyeing a voluminous flat form polyamide substrate with anionic dyestuffs according to the cold pad-batch method, which process comprises the step of selecting the initial pH of the dyeing liquor within a range depending on the affinity of the substrate for anionic dyestuffs and the molecular weight of the anionic dyestuffs so as to give a substantial linear exhaustion of the dyeing liquor, the dyeing liquor being free from a thickening, swelling or foaming agent.
    Type: Grant
    Filed: April 25, 1983
    Date of Patent: January 29, 1985
    Assignee: Sandoz Ltd.
    Inventor: Hans-Peter Stakelbeck
  • Patent number: 4494955
    Abstract: Disclosed is mass-dyed polyester comprising, as dyestuff, a compound or mixture of compounds of formula I ##STR1## wherein R.sub.1 is a direct bond, --CONH-- or --NHCO--, R.sub.2 is alkyl, phenyl or naphthyl, optionally substituted or cyano, provided that R.sub.1 is a direct bond when R.sub.2 is cyano, and R.sub.3 is hydrogen, methyl, ethyl, alkoxy-C.sub.1-3 -carbonyl or --CH.dbd.CH--CH.dbd.CH-- bound in the 1,2-position.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: January 22, 1985
    Assignee: Sandoz Ltd.
    Inventors: Peter Bitterli, Bansi L. Kaul
  • Patent number: 4490150
    Abstract: A process for shifting the equilibrium of disperse dyestuffs between an aqueous liquor and a textile substrate comprising adding to the aqueous liquor a compound of formula I ##STR1## wherein R.sub.1 and R.sub.2, independently, are hydrogen or C.sub.4-12 -alkyl, provided that R.sub.1 and R.sub.2 are not both hydrogen;R is a mixed chain containing from 7 to 31 ethyleneoxy and 3 to 27 propyleneoxy units,with the proviso that R contains at most a total of 34 units.
    Type: Grant
    Filed: February 3, 1983
    Date of Patent: December 25, 1984
    Assignee: Sandoz Ltd.
    Inventor: Juerg Heller
  • Patent number: 4485034
    Abstract: Oxalanilides of formula I ##STR1## in which R is C.sub.6-22 alkyl or C.sub.6-22 alkoxyR.sub.1 and R.sub.2 are independently, hydrogen, C.sub.1-8 alkyl, C.sub.1-12 alkoxy, C.sub.1-12 alkylthio, phenoxy or phenylthio; provided that R.sub.1 and R.sub.2 may not both be selected from alkylthio, phenoxy and phenylthio;and R.sub.3 is hydrogen or C.sub.1-8 alkylcertain of which are novel, are useful as UV-stabilizers in organic polymers and organic polymer-containing coatings, particularly automotive finishes. The compounds have low volatility and excellent solubility in organic solvents such as are used in liquid finishes.
    Type: Grant
    Filed: September 6, 1983
    Date of Patent: November 27, 1984
    Assignee: Sandoz Ltd.
    Inventors: Lajos Avar, Evelyne Kalt, Hellmuth Reinshagen
  • Patent number: 4484927
    Abstract: The wet fastness properties of direct or reactive dyeings on cellulosic substrates are improved by aftertreatment with an agent comprising(A) a linear or crosslinked polymer comprising repeating units containing at least two quaternary nitrogen atoms linked by bridging groups connected to the quaternary nitrogen atoms by alkylene or arylene groups; optionally(B) an N-methylol derivative of a urea, melamine, guanamine, triazinone, urone, carbamate or acid amide;and, as an essential component,(C) a catalyst for the cross-linking of N-methylol compounds of the type (B) above,and subsequently carrying out a heat-curing step.Certain of the quaternary polymers (A), containing melamine groups, are novel.
    Type: Grant
    Filed: January 25, 1984
    Date of Patent: November 27, 1984
    Assignee: Sandoz Ltd.
    Inventor: Salvatore Valenti