Patents by Inventor Karin Katzer

Karin Katzer 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: 9803295
    Abstract: The present invention relates to nonwoven webs or fabrics. In particular, the present invention relates to nonwoven webs having superior abrasion resistance and excellent softness characteristics. The nonwoven materials comprise monocomponent fibers having a surface comprising a polyethylene, said nonwoven material having a fuzz/abrasion of less than 0.7 mg/cm3. The present invention is also related to fibers having a diameter in a range of from 0.1 to 50 denier, said fibers comprising a polymer blend, wherein the polymer blend comprises: from 40 weight percent to 80 weight percent (by weight of the polymer blend) of a first polymer which is a homogeneous ethylene/?-olefin interpolymer having: a melt index of from about 1 to about 1000 grams/10 minutes, and a density of from 0.870 to 0.
    Type: Grant
    Filed: April 8, 2005
    Date of Patent: October 31, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Rajen M. Patel, Gert Claasen, Wenbin Liang, Karin Katzer, Kenneth B. Stewart, Thomas Allgeuer, Jesus Nieto
  • Patent number: 7736737
    Abstract: The present invention relates to soft touch fibers and nonwoven fabrics made from such fibers. The fibers comprise an incompatible polymer system which leads to the soft touch quality. The fibers comprise a mixture of at least two thermoplastic polymers each having different viscosities and wherein the mixture has an interfacial tension from about 0.5 to about 20 mN/m, and wherein the mixture comprises a portion of the fiber surface. The fibers may include from 40-98 percent of a polyolefin continuous phase and from 2 to 60 weight percent of an amorphous thermoplast dispersed phase, such as polystyrene or polyamide.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: June 15, 2010
    Assignee: Dow Global Technologies Inc.
    Inventors: Jozef J. I. Van Dun, Daniel R. Bosak, John E. Flood, Edward N. Knickerbocker, Thomas Allgeuer, Karin Katzer, Miguel A. Prieto Goubert
  • Publication number: 20100143652
    Abstract: A composite structure including a substrate and a fluid in contact with the substrate, wherein the substrate comprises a non-woven, a foam, or combinations thereof and is characterized by having a basis weight of 15 to 500 grams per square meter.
    Type: Application
    Filed: February 11, 2008
    Publication date: June 10, 2010
    Applicant: DOW GLOBAL TECHNOLOGIES INC.
    Inventors: Luther E. Stockton, Susan M. Machelski, Deidre A. Strand, Harold C. Fowler, Young-Sam Kim, Gert J. Claasen, Friederike Stollmaier, Verena M.T. Thiede, Xiaodong Zhang, Karin Katzer-Galatik
  • Publication number: 20080146110
    Abstract: The present invention relates to nonwoven webs or fabrics. In particular, the present invention relates to nonwoven webs having superior abrasion resistance and excellent softness characteristics. The nonwoven materials comprise monocomponent fibers having a surface comprising a polyethylene, said nonwoven material having a fuzz/abrasion of less than 0.7 mg/cm3. The present invention is also related to fibers having a diameter in a range of from 0.1 to 50 denier, said fibers comprising a polymer blend, wherein the polymer blend comprises: from 40 weight percent to 80 weight percent (by weight of the polymer blend) of a first polymer which is a homogeneous ethylene/?-olefin interpolymer having: a melt index of from about 1 to about 1000 grams/10 minutes, and a density of from 0.870 to 0.
    Type: Application
    Filed: April 8, 2005
    Publication date: June 19, 2008
    Inventors: Rajen M. Patel, Gert Claasen, Wenbin Liang, Karin Katzer, Kenneth B. Stewart, Thomas Allgeuer, Jesus Nieto
  • Publication number: 20070173161
    Abstract: The invention relates to a method for the manufacture of a functionalised polyolefin by free radical grafting of a polyolefin with a monomer in the presence of 0.5 to 25 weight percent, based on the total weight of polyolefin and monomer, of a propylene polymer and/or copolymer comprising a free radical initiator distributed therein.
    Type: Application
    Filed: July 9, 2004
    Publication date: July 26, 2007
    Inventors: Thomas Allgeuer, Karin Katzer
  • Publication number: 20060234049
    Abstract: The present invention relates to soft touch fibers and nonwoven fabrics made from such fibers. The fibers comprise an incompatible polymer system which leads to the soft touch quality. The fibers comprise a mixture of at least two thermoplastic polymers each having different viscosities and wherein the mixture has an interfacial tension from about 0.5 to about 20 mN/m, and wherein the mixture comprises a portion of the fiber surface. The fibers may include from 40-98 percent of a polyolefin continuous phase and from 2 to 60 weight percent of an amorphous thermoplast dispersed phase, such as polystyrene or polyamide.
    Type: Application
    Filed: January 30, 2004
    Publication date: October 19, 2006
    Inventors: Jozef Van Dun, Daniel Bosak, John Flood, Edward Knickerbocker, Thomas Alleguer, Karin Katzer, Miguel Prieto Goubert
  • Publication number: 20050106965
    Abstract: A multilayer structure comprising (A) a fabric and (B) a polymeric layer comprising a substantially random interpolymer comprising in polymerized form i) one or more ?-olefin monomers and ii) one or more vinyl or vinylidene aromatic monomers and/or one or more sterically hindered aliphatic or cycloaliphatic vinyl or vinylidene monomers, and optionally iii) other polymerizable ethylenically unsaturated monomer(s); layer (B) being free from a substantial amount of tackifier. The multilayer structure has desirable haptics and surprisingly good drape properties. It is useful in many applications, for example as water-impermeable clothes, tablecloths, tents, water-impermeable covers, curtains, artificial leather or upholstery.
    Type: Application
    Filed: February 18, 2004
    Publication date: May 19, 2005
    Inventors: Ronald Wevers, Karin Katzer, Antonio Batistini, Emil Hersche, Simon Waddington, Alastair Hill, Dave Kelley, Stan Ng, Simon Lee
  • Patent number: 6699573
    Abstract: The subject invention provides a flexible, protective, integral liner comprising at least one first polymer which is a homogeneous linear or substantially linear ethylene/&agr;-olefin interpolymer having a density of from 0.850 g/cm3 to 0.920 g/cm3, and at least one second polymer which is an ethylene/&agr;-olefin interpolymer having a density of from 0.905 g/cm3 to 0.935 g/cm3, provided that the density or the second polymer is at least 0.002 g/cm3 greater than the density of the first polymer. In preferred embodiments, the liner will further comprise an ignition resistance additive. The liners of the invention exhibit an excellent balance of flexibility and strength, and, when an ignition resistance additive is employed, excellent ignition resistance.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: March 2, 2004
    Assignee: Dow Global Technologies Inc.
    Inventors: Karin Katzer, Wolfgang Quack
  • Publication number: 20030216509
    Abstract: A graft polymer according to the invention contains a backbone of one or more substantially random interpolymers, comprising: (1) polymer units derived from: (a) at least one vinyl or vinylidene aromatic monomer, or (b) at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, or (c) a combination of at least one aromatic vinyl or vinylidene monomer and at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, and (2) polymer units derived from at least one of ethylene and/or a C3-20 &agr;-olefin; and (3) optionally polymer units derived from one or more of ethylenically unsaturated polymerizable monomers other than those derived from (1) and (2); said backbone being grafted with one or more olefinically unsaturated organic monomer(s). In a preferred embodiment such graft polymers were prepared using a reactive extrusion process.
    Type: Application
    Filed: November 15, 2002
    Publication date: November 20, 2003
    Inventors: Gabriele Goethel, Michael E Rowland, Martin J Guest, Steve R Betso, Karin Katzer, Thomas T Allgeuer, Ronald Wevers, Hari P Reddy