Patents by Inventor Karl Herrle

Karl Herrle 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).

  • Manufacture of aqueous polyvinylpyrrolidone-iodine solutions
    Patent number: 4320114
    Abstract: Aqueous solutions of polyvinylpyrrolidone-iodine, generally referred to as PVP-iodine, which is finding increasing use because of its germicidal, bactericidal, fungicidal and disinfectant properties.
    Type: Grant
    Filed: August 27, 1980
    Date of Patent: March 16, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Denzinger, Karl Herrle, Hans-Uwe Schenck
  • Manufacture of low molecular weight poly-N-vinylpyrrolidone-2
    Patent number: 4058655
    Abstract: Low molecular weight poly-N-vinyl-pyrrolidone-2 is prepared by polymerizing N-vinylpyrrolidone-2 at elevated temperature in the presence of organic peroxides which carry organic radicals on either side of the peroxide group.
    Type: Grant
    Filed: March 8, 1976
    Date of Patent: November 15, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Denzinger, Kurt Seelert, Karl Herrle
  • Manufacture of vinylpyrrolidone polymers
    Patent number: 4053696
    Abstract: A process for the continuous manufacture of vinylpyrrolidone polymers of low K values, wherein vinylpyrrolidone, with or without comonomers copolymerizable therewith, is polymerized in organic solvents at elevated temperatures and superatmospheric pressures in the presence of a source of free radicals.
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: October 11, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl Herrle, Hermann Gausepohl, Wolfgang Schwarz
  • Thermoplastic vinyl chloride polymer compositions with improved processing properties
    Patent number: 4051200
    Abstract: Mixtures based on vinyl chloride polymers and small amounts of a copolymer of an ester of acrylic acid or methacrylic acid. The said copolymer contains acrylic acid ester or methacrylic acid ester units, units which contain a lactone ring structure, and, optionally, units of other copolymerizable monomers. The mixtures exhibit improved processability and may in particular be used for the manufacture of films, sheets and the like.
    Type: Grant
    Filed: July 6, 1976
    Date of Patent: September 27, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Petr Simak, Karl Herrle, Franz Haaf, Guenter Hatzmann
  • Thermoplastic compositions with improved processing properties
    Patent number: 4048260
    Abstract: Mixtures based on vinyl chloride polymers and small amounts of copolymer of an ester of acrylic acid or methacrylic acid, which mixtures have been obtained by polymerization of vinyl chloride in the presence of the above copolymer. The said copolymer contains acrylic acid ester or methacrylic acid ester units, units which contain a lactone ring structure, and, optionally, units of other copolymerizable monomers. The mixtures exhibit improved processability and may in particular be used for the manufacture of films, sheets and the like.
    Type: Grant
    Filed: July 6, 1976
    Date of Patent: September 13, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Haaf, Guenter Hatzmann, Karl Herrle, Petr Simak
  • Manufacture of polyvinylpyrrolidone-iodine
    Patent number: 4027083
    Abstract: Polyvinylpyrrolidone-iodine, manufactured by reaction of iodine and a polyvinylpyrrolidone obtained by polymerization in an anhydrous organic solvent in the presence of a source of free radicals and optionally in the presence of a heavy metal of atomic number from 23 to 29, in the form of a complex compound or of a salt with an organic acid, as a co-activator, followed by steam distillation of this polyvinylpyrrolidone, if appropriate. The PVP-iodine of the invention is very stable and can be used as a disinfectant.
    Type: Grant
    Filed: August 7, 1975
    Date of Patent: May 31, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl Herrle, Walter Denzinger, Kurt Seelert, Wolfgang Schwarz
  • Manufacture of insoluble and only slightly water-swellable polymers of N-vinyl lactams of improved adsorptivity
    Patent number: 4013825
    Abstract: Manufacture of insoluble polyvinyl lactams in the absence of oxygen and in the presence of .alpha.- or .beta.-ketocarboxylic acids or esters thereof.
    Type: Grant
    Filed: July 3, 1975
    Date of Patent: March 22, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Denzinger, Ernst Hofmann, Karl Herrle
  • Manufacture of insoluble and only slightly water-swellable polymers of N-vinyl lactams of improved adsorptivity
    Patent number: 3992562
    Abstract: Manufacture of insoluble polyvinyl lactams by polymerization in the absence of oxygen and in the presence of sulfur compounds having a functionality of less than 6.
    Type: Grant
    Filed: July 7, 1975
    Date of Patent: November 16, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Denzinger, Ernst Hofmann, Karl Herrle
  • Hair setting compositions containing easily removable neutralized copolymers
    Patent number: 3981987
    Abstract: Copolymers obtained by copolymerization of vinyl esters of aliphatic carboxylic acids and/or acrylic or methacrylic acid esters of aliphatic alcohols, with half-esters of ethylenically unsaturated dibasic carboxylic acids, followed by neutralization with bases, are used in hair setting compositions.
    Type: Grant
    Filed: January 8, 1975
    Date of Patent: September 21, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Linke, Karl Herrle, Wolfgang Schwarz, Johannes Perner
  • Manufacture of insoluble and only sparingly swellable poly-N-vinylpyrrolidone-2 or copolymers of N-vinylpyrrolidone with other N-vinyllactams
    Patent number: 3933766
    Abstract: Manufacture of insoluble poly-N-vinyl-pyrrolidone-2 or copolymers of N-vinylpyrrolidone-2 in the presence of a difunctional crosslinker by heating the reaction solution at temperatures above 80.degree.C and completing the reaction at the boiling temperature of water.
    Type: Grant
    Filed: November 9, 1973
    Date of Patent: January 20, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Ernst Hofmann, Karl Herrle