Patents by Inventor Hermann Loffler

Hermann Loffler 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: 6011140
    Abstract: Reactive dyes of the formula ##STR1## where n is 1 or 2,G.sup.1 is hydrogen or hydroxyl,G.sup.2 is hydrogen or hydroxysulfonyl,G.sup.3 is hydrogen or arylazo,R.sup.1 is hydrogen or hydroxysulfonylmethyl,R.sup.2 is hydrogen or hydroxysulfonylmethyl, andD is the radical of a diazo or tetraazo component having in each case at least one anchor radical of the formula SO.sub.2 --Y, where Y is vinyl or substituted ethyl,their use for dyeing or printing hydroxyl-containing or nitrogenous organic substrates, and naphthylamines as intermediates therefor.
    Type: Grant
    Filed: July 6, 1998
    Date of Patent: January 4, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Andrea Zamponi, Manfred Patsch, Hermann Loffler
  • Patent number: 5929217
    Abstract: Reactive dyes of the formula I ##STR1## where a is 1 or 2,b is 0 or 1,Z.sup.1 is hydrogen, C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, halogen, nitro, amino, hydroxysulfonyl, C.sub.1 -C.sub.6 -alkoxycarbonyl, carbamoyl or C.sub.1 -C.sub.6 -mono- or dialkylcarbamoyl,A is methylene, carbonyl, sulfonyl or a radical of the formula CH.sub.2 --CO or CH.sub.2 --SO.sub.2,X is a direct linkage or a linker,Y.sup.1 is vinyl or a radical of the formula C.sub.2 H.sub.4 Q where Q is a group which can be eliminated under alkaline conditions,W is in case 1) the radical of a chromophore which may have further reactive groups, or in case 2) the radical of a coupling component to which additionally the radical of a diazo component may be linked via an azo bridge and which may have additional reactive groups, andL.sup.1 and L.sup.2 are each linkers,their intermediates and a process for dyeing or printing substrates having hydroxyl groups or nitrogen atoms using the novel dyes are described.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: July 27, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Manfred Patsch, Hermann Loffler, Claus Marschner
  • Patent number: 5789557
    Abstract: Reactive dyes of the formula ##STR1## where n is 1 or 2,R.sup.1 is hydrogen or hydroxysulfonyl,R.sup.2 is hydrogen or hydroxyl,R.sup.3 is substituted C.sub.1 -C.sub.4 -alkyl, C.sub.5 -C.sub.7 -cycloalkyl or substituted phenyl,R.sup.4 is hydrogen or R.sup.3 and R.sup.4, together with the nitrogen atom linking them, form a heterocyclic radical andD is a radical of a diazo or tetrazo component, each having at least one mechanism,their use for dyeing or printing hydroxyl-containing or nitrogen-containing organic substrates, and novel aminonaphthalenes.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: August 4, 1998
    Assignee: Basf Aktiengesellschaft
    Inventors: Jurgen Dornhagen, Heike Kilburg, Manfred Patsch, Hermann Loffler, Ortwin Schaffer
  • Patent number: 4305718
    Abstract: A process for dyeing and printing cellulose-containing textile material, wherein the dye used is a compound of the general formula I ##STR1## where K is the radical of a coupling component of the pyridone, pyrazole or indole series,one of the radicals X, Y and Z is a carboxylic acid ester group of a total of 2 to 19 carbon atoms, a carboxamide group of a total of 1 to 19 carbon atoms, an unsubstituted or substituted sulfonic acid phenyl ester group or a sulfonamide group of a total of 6 to 18 carbon atoms, andthe remaining substituents X, Y and Z are hydrogen, methyl, chlorine, bromine or nitro.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: December 15, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Hermann Loffler, Werner Juenemann, Gunther Lamm