Patents by Inventor Alfred Weihrather

Alfred Weihrather 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: 10844151
    Abstract: An aqueous dispersion free of fluorochemicals comprising (A) at least one copolymer obtained by polymerization of the following monomers a) at least one fluorine-free (meth)acrylate ester of a C16-C18 alcohol, b) at least one fluorine-free (meth)acrylate ester of a C18-C22 alcohol, c) at least one monomer selected from the group of vinyl chloride and vinylidene chloride, and, optionally, d) at least one monomer selected from the group of 2-hydroxyethyl(meth)acrylate and 3-chloro-2-hydroxyethyl(meth)acrylate, (B) at least one component selected from the group of a paraffin wax, (C) at least one surfactant, and (D) water, wherein the monomers a) and b) of copolymer (A) are distinct, and the copolymer (A) does not contain any polymerized units of styrene or ?-methylstyrene, is useful for the finishing of natural and synthetic textile fabrics to endow the said fabrics with excellent water repellent properties.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: November 24, 2020
    Assignee: HUNTSMAN TEXTILE EFFECTS (GERMANY) GmbH
    Inventors: Dieter Probst, Alfred Weihrather, Andreas Fuchs, Isabella Rettenbacher
  • Publication number: 20200017616
    Abstract: An aqueous dispersion free of fluorochemicals comprising (A) at least one copolymer obtained by polymerization of the following monomers a) at least one fluorine-free (meth)acrylate ester of a C16-C18 alcohol, b) at least one fluorine-free (meth)acrylate ester of a C18-C22 alcohol, c) at least one monomer selected from the group of vinyl chloride and vinylidene chloride, and, optionally, d) at least one monomer selected from the group of 2-hydroxyethyl(meth)acrylate and 3-chloro-2-hydroxyethyl(meth)acrylate, (B) at least one component selected from the group of a paraffin wax, (C) at least one surfactant, and (D) water, wherein the monomers a) and b) of copolymer (A) are distinct, and the copolymer (A) does not contain any polymerized units of styrene or ?-methylstyrene, is useful for the finishing of natural and synthetic textile fabrics to endow the said fabrics with excellent water repellent properties.
    Type: Application
    Filed: September 11, 2017
    Publication date: January 16, 2020
    Applicant: Huntsman Textile Effects (Germany) GmbH
    Inventors: Dieter PROBST, Alfred WEIHRATHER, Andreas FUCHS, Isabella RETTENBACHER
  • Publication number: 20130333121
    Abstract: Mixtures are described which contain reaction products of one or more amines with one or more epoxides and additionally isocyanates. Applying such mixtures to textile fabrics, especially polyester fiber fabrics, reduces or prevents unpleasant sweaty odor after physical exercise. The effects are very durable to laundering.
    Type: Application
    Filed: February 29, 2012
    Publication date: December 19, 2013
    Applicant: Huntsman Textile Effects (Germany) GmbH
    Inventors: Alfred Weihrather, Gunter Presnitz, Reinhold Braun
  • Patent number: 7051572
    Abstract: Gaseous or volatile substances which are either themselves odor-active or components of odor-active mixtures of substances are applied to fabrics. The amount of these substances adsorbed by the textiles is then determined. It is then determined what amount of these substances is desorbed again by the textiles upon storage. Comparison of the results which are obtained on textiles which had been finished beforehand with textile auxiliaries with the results of non-finished textiles enables statements to be made regarding odor-inhibiting properties of textile auxiliaries.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: May 30, 2006
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Rule Niederstadt, Rolf Moors, Alfred Weihrather, Jürgen Ellmann, Felix A. Reifler, Axel Ritter
  • Publication number: 20050081657
    Abstract: Gaseous or volatile substances which are either themselves odor-active or components of odor-active mixtures of substances are applied to fabrics. The amount of these substances adsorbed by the textiles is then determined. It is then determined what amount of these substances is desorbed again by the textiles upon storage. Comparison of the results which are obtained on textiles which had been finished beforehand with textile auxiliaries with the results of non-finished textiles enables statements to be made regarding odor-inhibiting properties of textile auxiliaries.
    Type: Application
    Filed: December 11, 2002
    Publication date: April 21, 2005
    Inventors: Rule Niederstadt, Rolf Moors, Alfred Weihrather, Jurgen Ellmann, Felix Reifler, Axel Ritter