Patents by Inventor Linda Witt

Linda Witt 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: 4654043
    Abstract: Cotton and cotton-containing fabrics are desized in strongly alkaline aqueous solution with an alkali metal hypochlorite by a process in which from 0.5 to 8.0 g/l of a tertiary hydroxyalkylamine which is soluble in aqueous alkaline solution, of an oxyethylated and/or oxypropylated ethylenediamine, of an oxyethylated polyethyleneimine, of malonic acid, of cyanuric acid, of a cyanuric acid derivative, of a urea derivative, of cyanoguanidine, of oxazolidone, of pyrrolidone, of N-methylpyrrolidone, of N-methylimidazole or of a mixture of these is added to the aqueous bath, as an activator for the hypochlorite. Activators for hypochlorite are used in the desizing of cotton and cotton-containing fabrics in strongly alkaline aqueous solutions.
    Type: Grant
    Filed: January 11, 1985
    Date of Patent: March 31, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Streit, Linda Witt, Heinz-Dieter Angstmann, Rolf Blanckenhorn, Rolf Fikentscher
  • Patent number: 4507220
    Abstract: Water-containing peroxydisulfate suspensions containing potassium peroxydisulfate, a water-soluble polymer or copolymer of acrylic acid and/or maleic acid, with or without an anionic surfactant, where appropriate mixed with a non-ionic surfactant, and water, in which the aqueous phase contains from 12 to 65% by weight of not less than one other dissolved compound which keeps the system at a pH of not less than 5 and is a source of potassium ions.
    Type: Grant
    Filed: December 23, 1982
    Date of Patent: March 26, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Streit, Linda Witt, Heinz-Dieter Angstmann