Patents by Inventor Paul Doswald

Paul Doswald has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6042621
    Abstract: The application is concerned with a compound of the formula (I) ##STR1## and a process for making the same. The compound is useful as fiber-reactive dyestuff in dyeing or printing onto hydroxy- or nitrogen-containing substrates. A printing composition comprising this fiber-reactive dyestuff and a copper phthalocyanine allows to obtain dyeings with less catalytic fading.
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: March 28, 2000
    Assignee: Clariant Finance (BV) Limited
    Inventors: Roland Wald, Paul Doswald
  • Patent number: 5721343
    Abstract: Fiber-reactive monoazo and disazo compounds of the formulaD-N.dbd.N--Kwhich compounds are in free acid or salt form, and mixtures thereof, are useful for dyeing or printing hydroxy group- or nitrogen-containing organic substrates, for example leather and fiber material comprising natural or synthetic polyamides or natural or regenerated cellulose; the most preferred substrate is a textile material comprising cotton.
    Type: Grant
    Filed: May 2, 1995
    Date of Patent: February 24, 1998
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Paul Doswald, Rainer Nusser, Roland Wald
  • Patent number: 5698681
    Abstract: Fiber-reactive disazo dyes correspond to formula I, ##STR1## and they are present as free acids or in salt form. They are used as reactive dyes for dyeing or printing hydroxy-group-containing or nitrogen-containing organic substrates, especially leather or fibrous material, which consists of or contains natural or synthetic polyamides or natural or regenerated cellulose. The dyeings obtained have high fixation values and good light fastness.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: December 16, 1997
    Assignee: Clariant Finance (BVI) Limited
    Inventor: Paul Doswald
  • Patent number: 5693765
    Abstract: Compounds of the formula ##STR1## and salts thereof, wherein eachR.sub.1 is independently hydrogen or C.sub.1-4 alkyl, andR.sub.2 is hydrogen; C.sub.1-6 alkyl; C.sub.2-4 alkenyl; C.sub.2-4 alkynyl; cyclohexyl; phenyl; phenyl substituted by 1 to 3 substituents selected from halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, --SO.sub.3 H and --COOH; phenyl (C.sub.1-4 alkyl); phenyl(C.sub.1-4 alkyl) the phenyl ring of which is substituted by 1 to 3 substituents selected from halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, --SO.sub.3 H and --COOH; or --W--Y,whereinW is linear or branched C.sub.1-6 alkylene, andY is --COOH, --COOC.sub.1-4 alkyl, --SO.sub.3 H, --OSO.sub.3 H, hydroxy, cyano, C.sub.1-4 alkoxy, --NH.sub.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: December 2, 1997
    Assignee: Clariant Finance (BVI) Limited
    Inventor: Paul Doswald
  • Patent number: 5527886
    Abstract: Fiber-reactive compounds of the formulaX-O.sub.2 S-W.sub.1 [F.sub.c ]W.sub.2 -NR-Z,and water-soluble salts thereof each cation of which is independently a non-chromophoric cation, and mixtures of such compounds or water-soluble salts,whereinFc is a chromophore-containing radical of a monoazo, disazo, polyazo, formazan, anthraquinone, dioxazine, phenazine or azomethine dye, which is in metal-free or metal complex form,each of W.sub.1 and W.sub.2 is independently a direct bond or a bridging group which is attached to a carbon atom of an aromatic carbocyclic ring or to a carbon or nitrogen atom of an aromatic heterocyclic ring present in F.sub.c,X is --CH.dbd.CH.sub.2 or --C.sub.2-4 alkylene--Y, wherein Y is hydroxy or a group which can be split off under alkaline conditions,R is hydrogen, C.sub.1-4 alkyl or C.sub.1-4 alkyl monosubstituted by hydroxy, halo, cyano, --SO.sub.3 H, --OSO.sub.3 H or --COOH, andZ is ##STR1## with the provisos as set forth herein.
    Type: Grant
    Filed: June 16, 1992
    Date of Patent: June 18, 1996
    Assignee: Sandoz Ltd.
    Inventors: Gunther Auerbach, Markus Dorr, Paul Doswald, Markus Gisler, Werner Koch, Helmut A. Moser, Roland Wald
  • Patent number: 5386015
    Abstract: Compounds of the formula ##STR1## and salts thereof, and mixtures of such compounds and salts, wherein F.sub.c is ##STR2## wherein D.sub.1 is an unsubstituted or substituted phenyl or naphthyl diazo component radical,each of Q.sub.1, Q.sub.2 and Q.sub.3 is independently hydrogen or a substituent,each R.sub.5 is independently hydrogen, C.sub.1-4 alkyl or C.sub.1-4 alkoxy,each R.sub.6 is independently hydrogen, halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, (C.sub.1-4 alkyl)carbonylamino or --NH--CO--NH.sub.2,R.sub.16 is hydrogen or --SO.sub.3 H,r is 1 or 2, andt is 2 or 3, andb is 1 or 2,whereineach R.sub.1 is independently hydrogen or C.sub.1-4 alkyl,each R.sub.7 is independently hydroxy, C.sub.1-4 alkoxy or --NH.sub.2,each Z is independently ##STR3## and each m is independently 0 or 1.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: January 31, 1995
    Assignee: Sandoz Ltd.
    Inventors: Paul Doswald, Werner Koch
  • Patent number: 5227477
    Abstract: Metal-free compounds of the formula ##STR1## a 1:1 or 1:2 metal complex of a metallizable compound of said formula or a salt of a metal-free compound of said formula or of a 1:1 or 1:2 metal complex thereof each cation of which is independently a non-chromophoric cation, or a mixture, thereof, whereinF.sub.c is the radical of a water-soluble azo, formazan, phthalocyanine, azomethine, oxazine, thiazine, phenazine or triphenylmethane dye,each W is independently --NR.sub.1 --B.sub.1 --NR.sub.1 --, ##STR2## wherein B.sub.1 is linear or branched C.sub.2-6 alkylene; linear or branched C.sub.2-6 alkylene interrupted by --O-- or --NR.sub.1 --; linear or branched C.sub.3-6 alkylene monosubstituted by hydroxy or carboxy or disubstituted by hydroxy, ##STR3## wherein R.sub.2 is hydrogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, carboxy or sulfo, andn is 0, 1, 2, 3 or 4, andm is 0 or 1,each X is independently a direct bond, --CO-- or --SO.sub.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: July 13, 1993
    Assignee: Sandoz Ltd.
    Inventors: Gunther Auerbach, Kurt Brenneisen, Markus Doerr, Paul Doswald, Markus Gisler, Werner Koch, Helmut A. Moser, Roland Wald
  • Patent number: 5227476
    Abstract: Compounds of the formula ##STR1## and salts thereof, wherein R.sub.1 is hydrogen, C.sub.1-4 alkyl or C.sub.1-4 alkoxy,R.sub.2 is hydrogen, halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, (C.sub.1-4 alkyl)carbonylamino or --NHCONH.sub.2, andW is -NR.sub.3 -B.sub.1 -NR.sub.3 -, ##STR2## wherein B.sub.1 is linear or branched C.sub.2-6 alkylene, linear or branched C.sub.2-6 alkylene interrupted by --O-- or --NR.sub.3 -- or linear or branched C.sub.3-6 alkylene monosubstituted or disubstituted by hydroxy, with the proviso that the hydroxy groups of any linear or branched C.sub.3-6 alkylene disubstituted by hydroxy are bound to different carbon atoms, andR.sub.4 is linear or branched C.sub.2-4 alkylene,whereineach R.sub.3 is independently hydrogen, C.sub.1-4 alkyl or C.sub.1-4 alkyl substituted by hydroxy, halo, cyano, sulfo, sulfato or carboxy,with the provisos that the --N.dbd.
    Type: Grant
    Filed: August 21, 1990
    Date of Patent: July 13, 1993
    Assignee: Sandoz Ltd.
    Inventors: Paul Doswald, Werner Koch
  • Patent number: 4843152
    Abstract: Complexes of the formula ##STR1## and salts thereof, whereineach of X.sub.1 and X.sub.2 is independently --NR.sub.1 R.sub.2,whereinR.sub.1 is hydrogen, C.sub.1-4 alkyl or C.sub.2-4 alkyl monosubstituted by hydroxy or C.sub.1-4 -alkoxy, andR.sub.2 is hydrogen; C.sub.1-10 alkyl; C.sub.2-8 hydroxyalkyl; C.sub.2-8 dihydroxyalkyl the hydroxy groups of which are attached to different carbon atoms; C.sub.1-6 alkyl monosubstituted by halo, cyano, --OR.sub.3, (C.sub.1-4 alkyl)carbonyl, (C.sub.1-4 -alkoxy)carbonyl, sulfo or sulfato; phenyl; phenyl substituted by 1 or 2 substituents selected from halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, acetamido and --SO.sub.2 --R.sub.4 ; phenyl(C.sub.1-4 alkyl); phenyl(C.sub.1-4 alkyl) the phenyl group of which is substituted by 1 or 2 substituents selected from halo, C.sub.1-4 -alkyl, C.sub.1-4 alkoxy, acetamido and --SO.sub.2 --R.sub.4 ; C.sub.5-6 cycloalkyl or C.sub.5-6 cycloalkyl substituted by 1 to 3 C.sub.1-4 alkyl groups,whereinR.sub.3 is C.sub.1-4 alkyl, C.sub.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: June 27, 1989
    Assignee: Sandoz Ltd.
    Inventors: Paul Doswald, Hans-Rudolf von Tobel
  • Patent number: 4699626
    Abstract: Complexes of the formula ##STR1## or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, wherein X is chloro or hydroxy,m is 1 or 2, andn is 0 or 1, with the proviso that m + n is 2, with the proviso that one of the asterisked bonds is in the 1-position and the other asterisked bond is in the 2-position, and mixtures thereof, are useful for dyeing or printing hydroxy group- or nitrogen-containing organic substrates, preferably textile material consisting of or containing cellulose fibers, most preferably cotton, alone or blended with other suitable textile fibers. The resulting dyed or printed textile material may be aftertreated with a polymeric polybasic amino compound in order to improve the wet fastness of these dyeings and printings.
    Type: Grant
    Filed: March 12, 1986
    Date of Patent: October 13, 1987
    Assignee: Sandoz Ltd.
    Inventors: Hans-Rudolf von Tobel, Paul Doswald
  • Patent number: 4665162
    Abstract: Metal-free azo compounds of the formula ##STR1## wherein Ra is an aromatic group or an active methylene coupling component radical as defined in the specification,R.sub.t is an arylazo group or a group of the formula --Y--Z,whereinY is a direct bond or a bridging radical, andZ is a basic amino or quaternary ammonium group, ##STR2## wherein each of the variables is as defined above or below, x is a direct bond or a bridging radical,x is hydrogen, hydroxy, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, amino or carboxy,ring B is further unsubstituted or further substituted,d is 0, 1 or 2, andn is 0 or 1,with the provisos that (i) the compounds contain an average of at least 1.3 basic water-solubilizing groups, and (ii) the compounds are free of sulfo groups, and 1:1 and 1:2 metal complexes thereof, which metal-free compounds and metal complexes are useful as dyes for leather and paper.
    Type: Grant
    Filed: June 18, 1985
    Date of Patent: May 12, 1987
    Assignee: Sandoz Ltd.
    Inventors: Paul Doswald, Emil Moriconi, Helmut Moser, Horst Schmid
  • Patent number: 4587292
    Abstract: Metal-free azo compounds of the formula ##STR1## wherein Ra is an aromatic group or an active methylene coupling component radical as defined in the specification,R.sub.t is an arylazo group or a group of the formula --Y--Z, whereinY is a direct bond or a bridging radical, andZ is a basic amino or quaternary ammonium group,R is ##STR2## wherein each of the variables is as defined above or below, X is a direct bond or a bridging radical,x is hydrogen, hydroxy, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, amino or carboxy,ring B is further unsubstituted or further substituted,d is 0, 1 or 2, andn is 0 or 1,with the provisos that (i) the compounds contain an average of at least 1.3 basic water-solubilizing groups, and (ii) the compounds are free of sulfo groups, and 1:1 and 1:2 metal complexes thereof, which metal-free compounds and metal complexes are useful as dyes for leather and paper.
    Type: Grant
    Filed: August 18, 1982
    Date of Patent: May 6, 1986
    Assignee: Sandoz Ltd.
    Inventors: Paul Doswald, Emil Moriconi, Helmut Moser, Horst Schmid
  • Patent number: 4550158
    Abstract: Metal-free azo compounds of the formula ##STR1## wherein Ra is an aromatic group or an active methylene coupling component radical as defined in the specification,R.sub.t is an arylazo group or a group of the formula -Y-Z,whereinY is a direct bond or a bridging radical, andZ is a basic amino or quaternary ammonium group, ##STR2## wherein each of the variables is as defined above or below, X is a direct bond or a bridging radical,x is hydrogen, hydroxy C.sub.1-4 alkyl, C.sub.1-4 alkoxy, amino or carboxy,ring B is further unsubstituted or further substituted,d is 0, 1 or 2, andn is 0 or 1,with the provisos that (i) the compounds contain an average of at least 1.3 basic water-solubilizing groups, and (ii) the compounds are free of sulfo groups,and 1:1 and 1:2 metal complexes thereof,which metal-free compounds and metal complexes are useful as dyes for leather and paper.
    Type: Grant
    Filed: August 18, 1982
    Date of Patent: October 29, 1985
    Assignee: Sandoz Ltd.
    Inventors: Paul Doswald, Emil Moriconi, Helmut Moser, Horst Schmid
  • Patent number: 4483796
    Abstract: Disazo and polyazo compounds of the formula ##STR1## wherein each A is independently ##STR2## and each R.sub.3 is independently C.sub.1-4 alkyl, oreach A, R.sub.3 and the ##STR3## radical to which they are attached, taken together, independently, are ##STR4## wherein each R.sub.21 is independently halo, C.sub.1-4 alkyl or C.sub.1-4 alkoxy,p is 0, 1 or 2,the * denotes the carbon atom attached to the --N.dbd.N-- radical, andthe ** denotes the carbon atom attached to X,each R.sub.1 and the ##STR5## radical to which it is attached taken together, independently, are the radical of an aromatic or heterocyclic coupling component,each A.sub.1 and A.sub.2 taken together are --O--Me--O--, wherein Me is copper, cobalt, iron, nickel, manganese or zinc, oreach A.sub.1 is hydroxy, andeach A.sub.2 is independently hydrogen, hydroxy or C.sub.1-4 alkoxy,X is a direct bond or a bridging radical,each Y is independently a direct bond, C.sub.1-4 alkylene, --CO--NH--(CH.sub.2).sub.m --, --NH--CO--(CH.sub.2).sub.m -- or --SO.sub.
    Type: Grant
    Filed: August 18, 1982
    Date of Patent: November 20, 1984
    Assignee: Sandoz Ltd.
    Inventors: Paul Doswald, Emil Moriconi, Helmut Moser, Horst Schmid
  • Patent number: 4468347
    Abstract: Disazo and polyazo compounds of the formula ##STR1## wherein each A is independently ##STR2## andeach R.sub.1 and the ##STR3## radical to which it is attached, taken together, independently, are ##STR4## wherein ring B may be substituted by one substituent selected from halogen, C.sub.1-4 alkyl and C.sub.1-4 alkoxy, and each R.sub.3 is independently C.sub.1-4 alkyl, orwherein the ** denotes the carbon atom attached to X, or each A, R.sub.3 and the ##STR5## radical to which they are attached, taken together, independently, are each R.sub.1 and the ##STR6## radical to which it is attached, taken together, independently, are the radical of an aromatic carbocyclic or heterocyclic coupling component, ##STR7## wherein each R.sub.21 is independently halo, C.sub.1-4 alkyl or C.sub.1-4 alkoxy,p is 0, 1 or 2,the * denotes the carbon atom attached to the --N.dbd.N-- radical, andthe ** denotes the carbon atom attached to X,eachA.sub.1 and A.sub.
    Type: Grant
    Filed: March 24, 1982
    Date of Patent: August 28, 1984
    Assignee: Sandoz Ltd.
    Inventors: Paul Doswald, Emil Moriconi, Helmut Moser, Horst Schmid
  • Patent number: 4284554
    Abstract: Compounds of the formula ##STR1## in which D is ##STR2## where R.sub.1 is hydrogen, (C.sub.1-4)alkyl or (C.sub.1-4)alkoxy,m and n are 1 or 2, andp is 0 or 1, with the proviso that n+p is 2 or 3,R.sub.2 is hydrogen or (C.sub.1-4)alkyl,R.sub.3 is (C.sub.1-4)alkyl, andHal is fluorine, chlorine or bromine,and mixtures thereof, which compounds are in free acid or salt form, their production and use as reactive dyestuffs for hydroxy group-containing and amide group-containing organic substrates such as leather and textiles consisting of or comprising natural or synthetic polyamides (e.g., wool, silk and nylon) or natural or regenerated cellulose (e.g., cotton, viscose and spun rayon).
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: August 18, 1981
    Assignee: Sandoz Ltd.
    Inventor: Paul Doswald