Patents by Inventor Anja Weismann

Anja Weismann 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).

  • Process for dyeing and foaming thermoplastic polyurethane
    Patent number: 10876252
    Abstract: A process for the preparation of coloured and expanded thermoplastic polyurethane (coloured ETPU) material which comprises the following steps: a) providing thermoplastic polyurethane (TPU) material and at least one gaseous fluid wherein the melting temperature of the TPU material is above the supercritical temperature of the at least one gaseous fluid b) placing the TPU material in an autoclave together with a colorant and/or a fluorescent whitening agent (FWA), wherein the colorant is selected from at least one of a disperse dye, an acid dye and a pigment; c) increasing the pressure in the autoclave by introducing the at least one gaseous fluid at a temperature below the melting point of the TPU material and at least above the supercritical temperature of the at least one gaseous fluid at the applied pressure (saturation step); and d) allowing the non-expanded TPU material to saturate; and e) decreasing the pressure in the autoclave down to ambient pressure at a temperature between the melting temperatur
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: December 29, 2020
    Assignee: HUNTSMAN INTERNATIONAL LLC
    Inventors: Lars Bohmer, Ian Burnell, Rene Alexander Klein, Jan Vandenbroeck, Anja Weismann
  • PROCESS FOR DYEING AND FOAMING THERMOPLASTIC POLYURETHANE
    Publication number: 20200063338
    Abstract: A process for the preparation of coloured and expanded thermoplastic polyurethane (coloured ETPU) material which comprises the following steps: a) providing thermoplastic polyurethane (TPU) material and at least one gaseous fluid wherein the melting temperature of the TPU material is above the supercritical temperature of the at least one gaseous fluid b) placing the TPU material in an autoclave together with a colorant and/or a fluorescent whitening agent (FWA), wherein the colorant is selected from at least one of a disperse dye, an acid dye and a pigment; c) increasing the pressure in the autoclave by introducing the at least one gaseous fluid at a temperature below the melting point of the TPU material and at least above the supercritical temperature of the at least one gaseous fluid at the applied pressure (saturation step); and d) allowing the non-expanded TPU material to saturate; and e) decreasing the pressure in the autoclave down to ambient pressure at a temperature between the melting temperatur
    Type: Application
    Filed: November 11, 2017
    Publication date: February 27, 2020
    Inventors: Lars Bohmer, Ian Burnell, Alexander Rene Klein, Jan Vandenbroeck, Anja Weismann