Patents by Inventor Horst Wurm

Horst Wurm 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).

  • Water-soluble, sulfoalkyl-containing, hydrophobically modified cellulose ethers, process for preparing them, and their use as protective colloids in polymerizations
    Patent number: 6924369
    Abstract: The present invention relates to water-soluble ionic cellulose ethers from the group of the hydroxyalkylcelluloses which are substituted by on average from 0.001 to 1.0 alkyl group per anhydroglucose unit and which carry from 0.01 to 0.1 sulfoalkyl group per anhydroglucose unit, to processes for preparing them and to the use of water-soluble ionic cellulose ethers from the group of the hydroxyalkylcelluloses which are substituted by on average from 0.001 to 1.0 alkyl group per anhydroglucose unit and which carry from 0.01 to 0.4 sulfoalkyl group per anhydroglucose unit as protective colloids in polymerizations.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: August 2, 2005
    Assignee: SE Tylose GmbH & Co., KG
    Inventors: Reinhard Doenges, Horst Wurm
  • Water-soluble, sulfoalkyl-containing, hydrophobically modified cellulose ethers, process for preparing them, and their use as protective colloids in polymerizations
    Patent number: 6515049
    Abstract: The present invention relates to water-soluble ionic cellulose ethers from the group of the hydroxyalkylcelluloses which are substituted by on average from 0.001 to 1.0 alkyl group per anhydroglucose unit and which carry from 0.01 to 0.1 sulfoalkyl group per anhydroglucose unit, to processes for preparing them and to the use of water-soluble ionic cellulose ethers from the group of the hydroxyalkylcelluloses which are substituted by on average from 0.001 to 1.0 alkyl group per anhydroglucose unit and which carry from 0.01 to 0.4 sulfoalkyl group per anhydroglucose unit as protective colloids in polymerizations.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: February 4, 2003
    Assignee: Clariant GmbH
    Inventors: Reinhard Doenges, Horst Wurm
  • Water-soluble, sulfoalkyl-containing, hydrophobically modified cellulose ethers, process for preparing them, and their use as protective colloids in polymerizations
    Publication number: 20020188117
    Abstract: Water-soluble sulfoalkyl-containing hydrophobically modified cellulose ethers, processes for preparing them, and their use as protective colloids in polymerizations
    Type: Application
    Filed: June 25, 2002
    Publication date: December 12, 2002
    Applicant: Clariant GmbH
    Inventors: Reinhard Doenges, Horst Wurm
  • Hydrophobically modified cellulose ethers, their preparation and use
    Publication number: 20010021387
    Abstract: The present invention relates to water-soluble, organosilylated cellulose ethers in which the organosilyl groups are attached hydrolysis-stably to the cellulose ethers and the remaining substituents on the silicon atoms of the organosilyl groups are likewise stable to hydrolysis. The cellulose ethers of the invention exhibit a strongly thickening action in aqueous solution, even at very low degrees of silylation, and are suitable as thickeners, for example, in paints, adhesives, and cosmetics. They are further suitable as protective colloids in the preparation of polymer dispersions.
    Type: Application
    Filed: February 15, 2001
    Publication date: September 13, 2001
    Applicant: Clariant GmbH
    Inventors: Ralf Krammer, Reinhard Doenges, Juergen Kirchner, Horst Wurm
  • Cellulose ethers containing butenyl groups and use thereof as protective colloids in polymerizations
    Patent number: 6111011
    Abstract: Water-soluble, nonionic cellulose ethers selected from the group consisting of alkylcelluloses and hydroxyalkylcelluloses which are additionally substituted by butenyl groups are used as protective colloids in the preparation of aqueous polymer dispersions.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: August 29, 2000
    Assignee: Clariant GmbH
    Inventors: Reinhard Doenges, Rudolf Ehrler, Horst Wurm
  • Cellulose ethers containing 2-propenyl groups and use thereof as protective colloids in polymerizations
    Patent number: 5994531
    Abstract: Water-soluble, nonionic cellulose ethers selected from the group consisting of alkylcelluloses and hydroxyalkylcelluloses having an average degree of polymerization of less than 900 which is substituted by, on average, from 0.01 to 0.04 2-propenyl groups per anhydroglucose unit are used as protective colloids in the preparation of aqueous polymer dispersions.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: November 30, 1999
    Assignee: Clariant GmbH
    Inventors: Reinhard Doenges, Rudolf Ehrler, Horst Wurm