Patents by Inventor Athanassios Tzikas

Athanassios Tzikas 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: 6160101
    Abstract: Azo dyes comprising at least one structural unit of the formula (1) ##STR1## The azo dyes according to the invention are particularly suitable for dyeing cotton and wool and produce dyeings with good allround properties.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: December 12, 2000
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Athanassios Tzikas, Rolf Deitz
  • Patent number: 5989297
    Abstract: Dye mixtures comprising at least one compound of the formula ##STR1## and at least one compound of the formula ##STR2## in which the variables are as defined in the claims,which are suitable as fibre-reactive dyes for dyeing widely varying fibre materials, are described.
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: November 23, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Hans Reichert, Bernhard Muller, Athanassios Tzikas
  • Patent number: 5984978
    Abstract: There are described reactive dyes of formula ##STR1## wherein the variables are as defined in the claims. The reactive dyes of formula (1) are suitable especially for dyeing or printing cellulosic fiber materials.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: November 16, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Herbert Klier, Athanassios Tzikas
  • Patent number: 5969113
    Abstract: Compounds of the formula ##STR1## in which the variables are as defined in the claims, which are suitable as fibre-reactive dyes for dyeing widely varying fibre materials, are described.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: October 19, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Rolf Deitz, Bernhard Muller, Athanassios Tzikas
  • Patent number: 5964900
    Abstract: A process for dyeing or printing cellulosic fiber materials, which comprises using at least one reactive dye of formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently of one another hydrogen, halogen, sulfo, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy,R.sub.5 and R.sub.6 are each independently of the other hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkanoylamino, ureido, or C.sub.1 -C.sub.4 alkoxy which is unsubstituted or substituted in the alkyl moiety by hydroxyl, sulfato or C.sub.1 -C.sub.4 alkoxy,Z.sub.1 and Z.sub.2 are each independently of the other vinyl or the radical --CH.sub.2 --CH.sub.2 --U, andU is a leaving group.
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: October 12, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Edmond Ruhlmann, Athanassios Tzikas, Herbert Klier
  • Patent number: 5936072
    Abstract: A description is given of reactive dyes of formula ##STR1## wherein R.sub.1 and R.sub.2 are each independently of the other hydrogen, sulfo, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or halogen,X is fluoro or chloro, andY is a --CHT--CH.sub.2 T or --CT.dbd.CH.sub.2 group, and T is bromo or chloro. The reactive dyes of formula (1) are particularly suitable for dyeing or printing cellulosic fiber materials.
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: August 10, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Athanassios Tzikas, Herbert Klier
  • Patent number: 5892006
    Abstract: The invention relates to dye mixtures which contain dyes of the formulae ##STR1## and to dyes of the formula ##STR2## in which A.sub.1, A.sub.2, A.sub.3, B, B.sub.1, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, Z.sub.1, Z.sub.2, X.sub.1, X.sub.2 and X.sub.3 are as defined in claim 1.The dyes and dye mixtures are distinguished by generally good properties and produce dyeings and prints having good wet and light fastness properties.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: April 6, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: Athanassios Tzikas
  • Patent number: 5849887
    Abstract: Dye mixtures comprising at least one reactive dye of formula ##STR1## together with at least one reactive dye of formula ##STR2## give dyeings having good fastness properties on nitrogen-containing or hydroxyl group-containing fiber materials.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: December 15, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Urs Lehmann, Rolf Deitz, Hans Reichert, Athanassios Tzikas
  • Patent number: 5817779
    Abstract: Described are compounds of formula ##STR1## which are suitable as fibre-reactive dyes for dyeing and printing a very wide range of different fibre materials.
    Type: Grant
    Filed: January 15, 1997
    Date of Patent: October 6, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Rolf Deitz, Paul Herzig, Athanassios Tzikas
  • Patent number: 5750662
    Abstract: Compounds of the formula ##STR1## in which the variables are as defined in the claims, which are suitable as fibre-reactive dyes for dyeing or printing widely varying fibre materials, are described.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: May 12, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Hans Reichert, Bernhard Muller, Athanassios Tzikas
  • Patent number: 5735911
    Abstract: The invention relates to dye mixtures which contain dyes of the formulae ##STR1## and to dyes of the formula ##STR2## in which A.sub.1, A.sub.2, A.sub.3, B, B.sub.1, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, Z.sub.1, Z.sub.2, X.sub.1, X.sub.2 and X.sub.3 are as defined in claim 1.The dyes and dye mixtures are distinguished by generally good properties and produce dyeings and prints having good wet and light fastness properties.
    Type: Grant
    Filed: January 2, 1997
    Date of Patent: April 7, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: Athanassios Tzikas
  • Patent number: 5731421
    Abstract: Reactive dyes of the formula ##STR1## in which K and Z are as defined in claim 1, are suitable in particular for the dyeing and printing of cellulose-containing fibre material and produce dyeings and prints having good fastness properties in high coloristic yield.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: March 24, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Athanassios Tzikas, Claudia Carisch
  • Patent number: 5723587
    Abstract: Disperse dyes of formula ##STR1## wherein D is the radical of a diazo component of the benzene, naphthalene, diphenyl, azobenzene, thiophene, benzothiazole, benzisothiazole, thiazole, thiadiazole, indazole, benzotriazole, pyrazole, anthraquinone, naphtholimide, chromone or diphenylene oxid series;X is hydrogen, methyl, halogen or --NH--CO--R, wherein R is methyl, ethyl, propyl, isopropyl, ethoxy or amino;Y is hydrogen, halogen, methoxy or --O--(CH.sub.2).sub.n --OR', wherein R' is hydrogen, CH.sub.3 or CH.sub.2 CH.sub.2 CN, and n is an integer from 1 to 6;R.sub.3 is C.sub.1 -C.sub.6 alkyl, andR.sub.4 is hydrogen, C.sub.1 -C.sub.6 alkyl or alkyl.The dyes are particularly suitable for dyeing polyester textile material and are distinguished in particular by very good lightfastness.
    Type: Grant
    Filed: August 8, 1996
    Date of Patent: March 3, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Antoine Clement, Athanassios Tzikas
  • Patent number: 5717078
    Abstract: Reactive dyes of the formula ##STR1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently of one another are hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 alkyl,X.sub.1 and X.sub.2 are halogen,B.sub.1 is an aromatic or aliphatic bridge member, or the radical of the formula --N(R.sub.2)--B.sub.1 --N(R.sub.3)-- is a piperazine radical,A.sub.1 is the radical of a monoazo, polyazo, metal complex azo, anthraquinone, phthalocyanine, formazan or dioxazine chromophore and,A.sub.2 is a radical of the formula ##STR2## in which D.sub.1 is substituted or unsubstituted phenyl or naphthyl,R.sub.5 and R.sub.6 independently of one another are hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 alkyl, alk is substituted or unsubstituted C.sub.2 -C.sub.6 alkylene andZ is vinyl or a radical --CH.sub.2 --CH.sub.2 --U.sub.1, and U.sub.1 is a leaving group, andthe radicals A.sub.1 and A.sub.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: February 10, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Athanassios Tzikas, Peter Aeschlimann
  • Patent number: 5686584
    Abstract: Compounds of the formula ##STR1## in which the variables are as defined in the claims, and which are suitable as fibre-reactive dyes for dyeing and printing widely varying fibre materials, are described.
    Type: Grant
    Filed: November 15, 1995
    Date of Patent: November 11, 1997
    Assignee: Ciba-Geigy Corporation
    Inventors: Rolf Deitz, Bernhard Muller, Athanassios Tzikas
  • Patent number: 5684138
    Abstract: Reactive dyes of the formula ##STR1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently of one another are hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 alkyl,B is an aliphatic bridge member,Y.sub.1 and Y.sub.2 independently of one another are halogen or carboxypyridinium,A.sub.1 is the radical of an anthraquinone, phthalocyanine, dioxazine, formazan or disazo dye or a radical of the formulae (2a) to (2h) defined in claim 1 andA.sub.2 is as defined above for A.sub.1 or is a radical of the formulae (2i) to (2m),where A.sub.1 and A.sub.2 have different meanings to one another, are particularly suitable for dyeing or printing fibre materials containing hydroxyl groups or containing nitrogen. Dyeings having good fastness properties coupled with a high tinctorial yield are obtained.
    Type: Grant
    Filed: May 29, 1996
    Date of Patent: November 4, 1997
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Herbert Klier, Bernhard Muller, Edmond Ruhlmann, Athanassios Tzikas
  • Patent number: 5629410
    Abstract: The invention relates to compounds of formula ##STR1## wherein the variables are as claimed in the claims and which are suitable as fibre-reactive dyes for dyeing a wide range of fibre materials.
    Type: Grant
    Filed: October 11, 1995
    Date of Patent: May 13, 1997
    Assignee: Ciba-Geigy Corporation
    Inventors: Rolf Deitz, Bernhard M uller, Athanassios Tzikas
  • Patent number: 5612463
    Abstract: The invention relates to dye mixtures which contain dyes of the formulae ##STR1## and to dyes of the formula ##STR2## in which A.sub.1, A.sub.2, A.sub.3, B, B.sub.1, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, Z.sub.1, Z.sub.2, X.sub.1, X.sub.2 and X.sub.3 are as defined in claim 1.The dyes and dye mixtures are distinguished by generally good properties and produce dyeings and prints having good wet and light fastness properties.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: March 18, 1997
    Assignee: Ciba-Geigy Corporation
    Inventor: Athanassios Tzikas
  • Patent number: 5599911
    Abstract: Reactive dyes of the formula ##STR1## in which the variables have the meanings stated in the claims, are described. The dyes according to the invention are particularly suitable for dyeing cellulosic fibre materials and give dyeings with good fastness properties and a high color yield.
    Type: Grant
    Filed: August 25, 1994
    Date of Patent: February 4, 1997
    Assignee: Ciba-Geigy Corporation
    Inventors: Rolf Deitz, Bernhard M uller, Athanassios Tzikas
  • Patent number: 5597904
    Abstract: Reactive dyes of formula ##STR1## wherein Z is a group of formula --CH.dbd.CH.sub.2 or --CH.sub.2 --CH.sub.2 --Y, and Y is a leaving group, and K is a radical of formula ##STR2## wherein X is a radical of formula --(CH.sub.2).sub.n --Cl, ##STR3## or --CH.dbd.CH.sub.2 ; Hal is halogen; and n is 1, 2, 3 or 4; R is hydrogen or unsubstituted or substituted C.sub.1 -C.sub.4 alkyl; R.sub.1 is amino or hydroxyl; R.sub.2 is methyl or carboxyl; and R.sub.3 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.2 -C.sub.4 alkanoylamino, halogen or carboxyl, are particularly suitable for dyeing or printing cellulosic fibre materials or natural or synthetic polyamide fibre materials in high tinctorial yield, and give dyeings and printings with good fastness properties.
    Type: Grant
    Filed: March 12, 1996
    Date of Patent: January 28, 1997
    Assignee: Ciba-Geigy Corporation
    Inventors: Athanassios Tzikas, Claudia Carisch