Patents by Inventor Alfred Kling

Alfred Kling 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: 4526582
    Abstract: Disclosed are novel N-(hydroxy methyl)-1-amino alkane-1,1-diphosphonic acids and N,N-Bis-(hydroxy-methyl)-1-amino alkane-1,1-diphosphonic acids, preferably N-(hydroxy methyl)-1-amino ethane-1,1-diphosphonic acid, N,N-Bis-(hydroxy methyl)-1-amino ethane-1,1-diphosphonic acid, and their water-soluble salts. Also disclosed is a method for preparing these compounds by reacting the corresponding 1-amino alkane-1,1-diphosphonic acids with formaldehyde in an alkaline medium at elevated temperature. The new phosphonic acid compounds are excellent stabilizing agents for hydrogen peroxide-containing alkaline bleaching liquors, especially useful for bleaching cellulose fibers and blends thereof with synthetic fibers, such as polyester fibers.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: July 2, 1985
    Assignee: Benckiser-Knapsack GmbH
    Inventors: Hans-Adolf Rohlfs, Alfred Kling, Guenter Raab, Michael Vogt, Viktor Specht, Ulrike Schaetzke
  • Patent number: 4510068
    Abstract: Disclosed are novel N-(hydroxy methyl)-1-amino alkane-1,1-diphosphonic acids and N,N-Bis-(hydroxy-methyl)-1-amino alkane-1,1-diphosphonic acids, preferably N-(hydroxy methyl)-1-amino ethane-1,1-diphosphonic acid, N,N-Bis-(hydroxy methyl)-1-amino ethane-1,1-diphosphonic acid, and their water-soluble salts. Also disclosed is a method for preparing these compounds by reacting the corresponding 1-amino alkane-1,1-diphosphonic acids with formaldehyde in an alkaline medium at elevated temperature. The new phosphonic acid compounds are excellent stabilizing agents for hydrogen peroxide-containing alkaline bleaching liquors, especially useful for bleaching cellulose fibers and blends thereof with synthetic fibers, such as polyester fibers.
    Type: Grant
    Filed: May 4, 1982
    Date of Patent: April 9, 1985
    Assignee: Benckiser-Knapsack GmbH
    Inventors: Hans-Adolf Rohlfs, Alfred Kling, Guenter Raab, Michael Vogt, Viktor Specht, Ulrike Schaetzke
  • Patent number: 4337214
    Abstract: Disclosed are novel N-(hydroxy methyl)-1-amino alkane-1,1-diphosphonic acids and N,N-Bis-(hydroxy-methyl)-1-amino alkane-1,1-diphosphonic acids, preferably N-(hydroxy methyl)-1-amino ethane-1,1-diphosphonic acid, N,N-Bis-(hydroxy methyl)-1-amino ethane-1,1-diphosphonic acid, and their water-soluble salts. Also disclosed is a method for preparing these compounds by reacting the corresponding 1-amino alkane-1,1-diphosphonic acids with formaldehyde in an alkaline medium at elevated temperature. The new phosphonic acid compounds are excellent stabilizing agents for hydrogen peroxide-containing alkaline bleaching liquors, especially useful for bleaching cellulose fibers and blends thereof with synthetic fibers, such as polyester fibers.
    Type: Grant
    Filed: August 14, 1980
    Date of Patent: June 29, 1982
    Assignee: Benckiser-Knapsack GmbH
    Inventors: Hans-Adolf Rohlfs, Alfred Kling, Guenter Raab, Michael Vogt, Viktor Specht, Ulrike Schaetzke
  • Patent number: 3954401
    Abstract: Alkaline baths for treating fiber material composed of or containing native cellulose such as cotton do not cause appreciable degradation of the cellulose chain when having added thereto amino alkylene phosphonic acids and/or 1-hydroxy alkane-1,1-diphosphonic acids or their salts.
    Type: Grant
    Filed: December 5, 1973
    Date of Patent: May 4, 1976
    Assignee: Benckiser-Knapsack GmbH
    Inventors: Alfred Kling, Viktor Specht