Patents by Inventor Reinhard Pedrazzi

Reinhard Pedrazzi 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: 4875903
    Abstract: Compounds of the formula ##STR1## wherein each R.sub.1 is independently hydrogen, C.sub.1-4 alkyl or C.sub.1-4 alkyl monosubstituted by hydroxy, halo, cyano or C.sub.1-4 alkoxy,each of X.sub.1 and X.sub.3 is independently halo, hydroxy, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, phenyl, phenoxy, amino or an aliphatic, cycloaliphatic, aromatic or heterocyclic amino group,each of X.sub.2 and X.sub.4 is independently an aliphatic, cycloaliphatic, aromatic or heterocyclic amino group containing at least one protonatable nitrogen atom or quaternary ammonium group,m is 0 or 1, andeach of n.sub.1 and n.sub.2 is independently 0 or 1, with the proviso that n.sub.1 +n.sub.2 is 1 or 2,wherein each halo is independently fluoro, chloro or bromo, with the provisos that (1) the total number of basic and cationic groups present as X.sub.1 -X.sub.
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: October 24, 1989
    Assignee: Sandoz Ltd.
    Inventor: Reinhard Pedrazzi
  • Patent number: 4876342
    Abstract: Oxazine compounds containing basic groups correspond to the formula ##STR1## wherein the symbols are as defined in the Specification. These compounds are suitable for dyeing or printing organic substrates containing hydroxy groups or nitrogen in accordance with known methods. Preferred substrates are textile materials which consist of or contain natural or regenerated cellulose, e.g. cotton, but also bast fibres or leather. Most preferred substrates are paper or paper products. Furthermore, these compounds can be used to prepare all kinds of inks, such as ball-pen inks or printing inks.Similarly, a mixture of one or more of the above compounds together with one or more copper phthalocyanine dyes containing basic and/or cationic groups can be used as dyeing or printing agent.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: October 24, 1989
    Assignee: Sandoz Ltd.
    Inventor: Reinhard Pedrazzi
  • Patent number: 4833235
    Abstract: Disazo compounds of the formula ##STR1## and salt thereof, D is the radical of a diazo component of the benzene or naphthalene series.K is the radical of a heterocyclic coupling component of the aminopyrazole-, pyridone- or barbituric acid-series, n is 1 to 4,R.sub.1 is hydrogen, C.sub.1-4 alkyl or substituted C.sub.1-4 alkyl,each of R.sub.2 and R.sub.3 is independently hydrogen, halo, C.sub.1-4 alkyl, substituted C.sub.1-4 alkyl, C.sub.1-4 alkoxy, substituted C.sub.1-4 alkoxy, --NHCO--Rhd 5, amino, substituted amino or a quaternary ammonium group, wherein R.sub.5 is C.sub.1-4 alkyl, substituted C.sub.1-4 alkyl, C.sub.1-4 alkoxy or amino,R.sub.4 is hydrogen, C.sub.1-4 alkyl, C.sub.
    Type: Grant
    Filed: October 7, 1987
    Date of Patent: May 23, 1989
    Assignee: Sandoz Ltd.
    Inventor: Reinhard Pedrazzi
  • Patent number: 4780106
    Abstract: Metal-free compounds of the formula ##STR1## 1:1 and 1:2 metal complexes thereof, and acid addition salts of metal-free compounds of said formula and 1:1 and 1:2 metal complexes thereof, whereinB is hydrogen; C.sub.1-4 alkyl; C.sub.1-4 alkyl monosubstituted by C.sub.1-4 alkoxy; C.sub.2-4 alkyl substituted by hydroxy; C.sub.5-6 cycloalkyl; C.sub.5-6 cycloalkyl substituted by 1 to 3 C.sub.1-4 alkyl groups; phenyl(C.sub.1-3 alkyl); phenyl(C.sub.1-3 alkyl) the phenyl group of which is substituted by 1 to 3 substituents selected from C.sub.1-4 alkyl, C.sub.1-4 alkoxy and halo; --A--NH--R.sub.2 ; --A'.sub.4 --N(R.sub.7).sub.2 ; --A.sub.4 --N.sup..sym. (R.sub.8).sub.2 R.sub.9 A.sup..crclbar. or --N(R.sub.7).sub.2,R is hydrogen; C.sub.1-4 alkyl; C.sub.5-6 cycloalkyl; C.sub.5-6 cycloalkyl substituted by 1 or 2 C.sub.
    Type: Grant
    Filed: June 10, 1987
    Date of Patent: October 25, 1988
    Assignee: Sandoz Ltd.
    Inventors: Helmut Moser, Manfred Greve, Reinhard Pedrazzi, Roland Wald
  • Patent number: 4764175
    Abstract: Metal-free compounds of the formula, ##STR1## and 1:1 copper complexes of metallizable metal-free compounds of said formula and internal and external salts of metal-free compounds of said formula and of 1:1 copper complexes of metallizable metal-free compounds of said formula, whereineach Q is independently linear or branched C.sub.2-6 alkylene; linear or branched C.sub.2-6 alkylene interrupted by --O--, --S-- or --NR.sub.4 --; linear or branched C.sub.3-6 alkylene monosubstituted or disubstituted by hydroxy or --*NHCO--CH.sub.2 --, wherein the * denotes the atom attached to the --NR.sub.4 -- radical,each R.sub.1 is independently hydrogen, halo, nitro, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, (C.sub.1-4 alkyl)carbonylamino, --SO.sub.2 NR.sub.3 R.sub.4, --CONR.sub.4 --C.sub.6 H.sub.5 or benzamido,R.sub.2 is hydrogen, hydroxy, halo, nitro, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, (C.sub.1-4 alkyl)carbonylamino or --NHCONR.sub.3 R.sub.4,X is --NR.sub.5 R.sub.6 or --N.sup..sym. R.sub.7 R.sub.8 R.sub.9 An.sup..crclbar.
    Type: Grant
    Filed: August 15, 1986
    Date of Patent: August 16, 1988
    Assignee: Sandoz Ltd.
    Inventors: Jacky Dore, Reinhard Pedrazzi
  • Patent number: 4742160
    Abstract: Metal-free compounds of the formula ##STR1## and 1:1 and 1:2 metal complexes thereof, and salts of the metal-free compounds and 1:1 and 1:2 metal complexes, whereR is hydrogen, --SO.sub.3 H or --NR.sub.5 R.sub.6 ;R.sub.a is hydrogen or --NR.sub.5 R.sub.6 ;R.sub.1 is hydrogen, halogen, --OH, C.sub.1-4 alkyl, C.sub.1-4 alkoxy or --SO.sub.3 H;R.sub.3 is hydrogen or C.sub.1-4 alkyl;R.sub.4 is halogen, --OH, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, phenyl, --NH.sub.2, an aliphatic, cycloaliphatic or aromatic amino group, a heterocyclic amino group containing 1 to 3 hereto atoms or a hydrazino group,R.sub.5 is hydrogen or C.sub.1-4 alkyl; andR.sub.6 is an organic radical, are useful as cationic dyes for dyeing and printing fibers, threads and textile materials comprising, for example, a natural or regenerated cellulosic material such as cotton, a modified synthetic polyamide or polyester, and a homo- or co-polymer of acrylonitrile or 1,1-dicyanoethylene, bast fibers such as hemp and particularly paper and leather.
    Type: Grant
    Filed: February 28, 1986
    Date of Patent: May 3, 1988
    Assignee: Sandoz Ltd.
    Inventors: Jacky Dore, Reinhard Pedrazzi
  • Patent number: 4686285
    Abstract: (i) Metal-free compounds of the formula ##STR1## (ii) tautomers thereof, (iii) 1:1 and 1:2 metal complexes of (i) and (ii),(iv) salts of (i), (ii), and (iii), and(v) mixtures of (i), (ii), (iii), and (iv),wherein the symbols are as defined in the Specification, are useful as dyes for, for example, polymers and copolymers of acrylonitrile, polyesters modified to contain acid groups, polyamides such as wool, leather, cotton, bast fibers such as hemp, flax, sisal jute, coir and straw, regenerated cellulose, glass fibers and paper (those wherein R.sub.o is other than hydrogen) or as intermediates for the synthesis of dyes.
    Type: Grant
    Filed: February 8, 1985
    Date of Patent: August 11, 1987
    Assignee: Sandoz Ltd.
    Inventor: Reinhard Pedrazzi
  • Patent number: 4673735
    Abstract: A compound of formula I ##STR1## in metal-free; 1:1 or 1:2 metal complex form and, when an acid group is present, in free acid or acid addition salt form, in which R.sub.1 is hydrogen or --N.dbd.N--D where D is a diazo component and R, T and B are organic radicals defined in the text.
    Type: Grant
    Filed: April 9, 1984
    Date of Patent: June 16, 1987
    Assignee: Sandoz Ltd.
    Inventors: Helmut Moser, Manfred Greve, Reinhard Pedrazzi, Roland Wald
  • Patent number: 4670546
    Abstract: Compounds of the formula ##STR1## in metal-free, 1:1 or 1:2 metal complex form, or in acid addition salt form, where the symbols are defined in the specification, useful as dyes for, for example, regenerated cellulose, cotton, synthetic polyamides and polyesters modified to contain acid groups and polymers and copolymers of acrylonitrile and 1,1-dicyanoethylene.
    Type: Grant
    Filed: June 28, 1984
    Date of Patent: June 2, 1987
    Assignee: Sandoz Ltd.
    Inventors: Jacky Dore, Reinhard Pedrazzi
  • Patent number: 4594410
    Abstract: Azo dyes of the formula ##STR1## and external salts thereof, wherein F is the residue of a monoazo or disazo compound in 1:1 metal complex form or of a trisazo, disazoazoxy or tetrakisazo compound in metal-free or 1:1 metal complex form,each X is independently --NR.sub.2 --Q--NR.sub.3 R.sub.4 or --NR.sub.2 --Q--N.sup..sym. R.sub.5 R.sub.6 R.sub.7,whereinQ is linear or branched C.sub.2-6 alkylene or --NH--CO--CH.sub.2 --,R.sub.2 is hydrogen or C.sub.1-4 alkyl,each of R.sub.3 and R.sub.4 is independently hydrogen; C.sub.1-6 alkyl; C.sub.2-6 alkyl monosubstituted by cyano or hydroxy in the 2-, 3-, 4-, 5- or 6-position; phenyl(C.sub.1-3 alkyl); phenyl(C.sub.1-3 alkyl) having, on the phenyl ring, 1, 2 or 3 substituents selected from chloro, C.sub.1-4 alkyl and C.sub.1-4 alkoxy; C.sub.5-6 cycloalkyl or C.sub.5-6 cycloalkyl substituted by 1, 2 or 3 C.sub.1-4 alkyl groups or --NR.sub.3 R.sub.
    Type: Grant
    Filed: August 18, 1982
    Date of Patent: June 10, 1986
    Assignee: Sandoz Ltd.
    Inventor: Reinhard Pedrazzi
  • Patent number: 4465627
    Abstract: Disazo, trisazo and tetrakisazo compounds of the formula ##STR1## in which each D.sub.1 independently is a disazo component of the aniline series or the naphthylamine series;each K.sub.1 independently is a coupling and disazo component of the aniline series or the naphthylamine series;each K.sub.2 independently is a coupling component of the aniline series or the naphthylamine series;each m independently is 0 or 1;Y is a bridging group attached to the amino group of each K.sub.2, which bridging group is other than one having two alkylene end groups;Z and Z.sub.Z are basic or cationic groups;b is 0 to 2; andn is at least 1,with the proviso that the compounds are free of sulfo groups,are useful as dyes for dyeing and printing cellulosic substrates such as cotton and paper and leather, particularly paper.
    Type: Grant
    Filed: August 7, 1981
    Date of Patent: August 14, 1984
    Assignee: Sandoz Ltd.
    Inventor: Reinhard Pedrazzi
  • Patent number: 4367172
    Abstract: Compounds of the formula ##STR1## wherein F is the residue of a monoazo or disazo compound,each X is independently --NR.sub.2 --Q--NR.sub.3 R.sub.4 or --NR.sub.2 --Q--N.sup..sym. R.sub.5 R.sub.6 R.sub.7,whereinQ is linear or branched C.sub.2-6 alkylene,R.sub.2 is hydrogen or C.sub.1-4 alkyl,each of R.sub.3, R.sub.4, R.sub.5 and R.sub.6 is independently hydrogen; C.sub.1-6 alkyl; C.sub.2-6 alkyl substituted by hydroxy or cyano; C.sub.1-3 alkyl substituted by phenyl or substituted phenyl having 1 to 3 substituents selected from chloro, C.sub.1-4 alkyl and C.sub.1-4 alkoxy; C.sub.5-6 cycloalkyl or C.sub.5-6 cycloalkyl substituted by 1 to 3 C.sub.1-4 alkyl groups, with the proviso that neither R.sub.5 nor R.sub.6 can be hydrogen, orR.sub.3 and R.sub.4 or R.sub.5 and R.sub.6 taken together and with the nitrogen atom to which they are joined form a 5- or 6-membered ring containing at most one further hetero atom, andR.sub.7 is C.sub.1-4 alkyl or benzyl,each Z.sub.1 is independently --CO--, --SO.sub.
    Type: Grant
    Filed: December 4, 1980
    Date of Patent: January 4, 1983
    Assignee: Sandoz Ltd.
    Inventor: Reinhard Pedrazzi
  • Patent number: 4363761
    Abstract: Compounds of the formula ##STR1## wherein F is the residue of a monoazo or disazo compound, each X is independently --NR.sub.2 --Q--NR.sub.3 R.sub.4 or --NR.sub.2 --Q--N.sup..sym. R.sub.5 R.sub.6 R.sub.7,wherein Q is linear or branched C.sub.2-6 alkylene, R.sub.2 is hydrogen or C.sub.1-4 alkyl,each of R.sub.3, R.sub.4, R.sub.5 and R.sub.6 is independently hydrogen; C.sub.1-6 alkyl; C.sub.2-6 alkyl substituted by hydroxy or cyano; C.sub.1-3 alkyl substituted by phenyl or substituted phenyl having 1 to 3 substituents selected from chloro, C.sub.1-4 alkyl and C.sub.1-4 alkoxy; C.sub.5-6 cycloalkyl or C.sub.5-6 cycloalkyl substituted by 1 to 3 C.sub.1-4 alkyl groups, with the proviso that neither R.sub.5 and R.sub.6 can be hydrogen, orR.sub.3 and R.sub.4 or R.sub.5 and R.sub.6 taken together and with the nitrogen atom to which they are joined from a 5- or 6-membered ring containing at most one further hetero atom, andR.sub.7 is C.sub.1-4 alkyl or benzyl,each Z.sub.1 is independently --CO--, --SO.sub.
    Type: Grant
    Filed: December 4, 1980
    Date of Patent: December 14, 1982
    Assignee: Sandoz Ltd.
    Inventor: Reinhard Pedrazzi
  • Patent number: 4273707
    Abstract: Compounds of the formula ##STR1## wherein F is the residue of a monoazo or disazo compound,each X is independently --NR.sub.2 --Q--NR.sub.3 R.sub.4 or --NR.sub.2 --Q--N.sup..sym. R.sub.5 R.sub.6 R.sub.7,whereinQ is linear or branched C.sub.2-6 alkylene,R.sub.2 is hydrogen or C.sub.1-4 alkyl,each of R.sub.3, R.sub.4, R.sub.5 and R.sub.6 is independently hydrogen; C.sub.1-6 alkyl; C.sub.2-6 alkyl substituted by hydroxy or cyano; C.sub.1-3 alkyl substituted by phenyl or substituted phenyl having 1 to 3 substituents selected from chloro, C.sub.1-4 alkyl and C.sub.1-4 alkoxy; C.sub.5-6 cycloalkyl or C.sub.5-6 cycloalkyl substituted by 1 to 3 C.sub.1-4 alkyl groups, with the proviso that neither R.sub.5 nor R.sub.6 can be hydrogen, orR.sub.3 and R.sub.4 or R.sub.5 and R.sub.6 taken together and with the nitrogen atom to which they are joined form a 5- or 6-membered ring containing at most one further hetero atom, andR.sub.7 is C.sub.1-4 alkyl or benzyl,each Z.sub.1 is independently --CO--, --SO.sub.
    Type: Grant
    Filed: April 20, 1979
    Date of Patent: June 16, 1981
    Assignee: Sandoz Ltd.
    Inventor: Reinhard Pedrazzi
  • Patent number: 4126608
    Abstract: Salts of stilbene-azo and stilbene-azoxy dyestuffs, and mixtures thereof in hich the cations are selected from tetra-alkylammonium, tetraalkylammonium in combination with lithium, sodium, potassium or ammonium, and ammonium in combination with lithium, sodium or potassium, have good cold water solubility relative to known salts of such dyes.The preferred dyes have the formula ##STR1## wherein (1) EACH R' is independently --SO.sub.3.sup..crclbar. M.sup..sym. or --SO.sub.3.sup..crclbar. N.sup..sym. (R).sub.4'wherein each R is independently alkyl of 1 to 6 carbon atoms or alkyl of 1 to 6 carbon atoms substituted by hydroxy, cyano, halo or phenyl, andEach M.sup..sym. is independently hydrogen, lithium, sodium, potassium or ammonium, with the proviso that at least one R' is --SO.sub.3.sup..crclbar. N.sup..sym. (R).sub.4'(2) each R' is --SO.sub.3.sup..crclbar. M.sup..delta.,wherein each M.sup..sym. is lithium, sodium, potassium, or ammonium, with the proviso that at least one M.sup..sym.
    Type: Grant
    Filed: December 17, 1975
    Date of Patent: November 21, 1978
    Assignee: Fidelity Union Trust Company as Executive Trustee under the Sandoz Trust
    Inventor: Reinhard Pedrazzi
  • Patent number: 3953419
    Abstract: Novel salts of stilbene-azo or stilbene-azoxy dyestuffs, in which the cations are selected from tetra-alkylammonium, tetra-alkylammonium in combination with lithium, sodium, potassium or ammonium, and ammonium in combination with lithium, sodium or potassium, have good cold water solubility relative to known salts of such dyes. The preferred dyes have the formula ##SPC1##Wherein1. each R' is independently --SO.sub.3 .sup.-M.sup.+ or --SO.sub.3 .sup.-N.sup.+(R).sub.4,wherein each R is independently alkyl of 1 to 6 carbon atoms or alkyl of 1 to 6 carbon atoms substituted by hydroxy, cyano, halo or phenyl, andEach M.sup.+ is independently hydrogen, lithium, sodium, potassium or ammonium,With the proviso that at least one R' is --SO.sub.3 .sup.-N.sup.+(R).sub.4,2. each R' is --SO.sub.3 .sup.-M.sup.+,wherein each M.sup.+ is lithium, sodium, potassium or ammonium,With the proviso that at least one M.sup.+ is ammonium, or3. each R' is independently --SO.sub.3 .sup.-M.sup.+ or --SO.sub.3 .sup.-N.sup.+(R).sub.
    Type: Grant
    Filed: August 6, 1973
    Date of Patent: April 27, 1976
    Assignee: Sandoz Ltd.
    Inventor: Reinhard Pedrazzi