Patents by Inventor Sebastian Weiand

Sebastian Weiand 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: 10364306
    Abstract: The present disclosure provides a low density polyethylene (LDPE) having (A) a density from 0.910 to 0.924 g/cm3, determined according to ISO 1183 at 23° C.; (B) an elongational hardening of at least 4.2, at 150° C. at an elongational rate of 1 s?1; (C) a ratio Mw/Mn of at least 18, where (i) Mw is the weight average molar mass, measured by a MALLS detector coupled to a GPC, and (ii) Mn is the number average molar mass, measured by GPC (Gel Permeation Chromatography); and (D) a Mw of at least 230,000 g/mol. The present disclosure also provides an article of manufacture made from or containing (A) a substrate and (B) a coating layer made from or containing the disclosed LDPE. The present disclosure further provides a polymerization process occurring (A) in the presence of oxygen as the only radical initiating agent and (B) in the absence of solvents.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: July 30, 2019
    Assignee: Basell Polyolefine GmbH
    Inventors: Sebastian Weiand, Andrei Gonioukh, Stephan Schmitz, Andre-Armand Finette, Guido Bürger, Guido Küpper, Thomas Herrmann, Iakovos Vittorias, Dieter Lilge, Gerd Mannebach
  • Patent number: 9273162
    Abstract: A process for monitoring the polymerization of ethylene or ethylene and comonomers in the presence of free-radical polymerization initiator at pressures in the range of from 160 MPa to 350 MPa and temperatures in the range of from 100° C. to 350° C. in a tubular reactor with one or more reaction zones, which is equipped with cooling jackets for cooling the tubular reactor with a cooling medium, comprising a step of measuring as process parameters the temperature profile and the pressure of the reaction medium and the flow and temperature profile of the cooling medium along the reactor.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: March 1, 2016
    Assignee: Basell Polyolefine GmbH
    Inventors: Sebastian Weiand, Wolfgang Gsella, Victor Kuhne, Christian-Ulrich Schmidt, Tom Zimmermann
  • Publication number: 20130333832
    Abstract: Process for preparing ethylene homopolymers or copolymers in the presence of free-radical polymerization initiator and at least one chain transfer agent at pressures in the range of from 110 MPa to 350 MPa and temperatures in the range of from 100° C. to 350° C. in a tubular reactor with at least two reaction zones having different concentrations of the chain transfer agent, wherein the concentration of the chain transfer agent in the first reaction zone is less than 70% of the concentration of the chain transfer agent in the reaction zone with the highest concentration of the chain transfer agent, ethylene homopolymers or copolymers obtainable by such a process, the use of the ethylene homopolymers or copolymers for extrusion coating and a process for extrusion coating a substrate selected from the group consisting of paper, paperboard, polymeric film, and metal, with such ethylene homopolymers or copolymers.
    Type: Application
    Filed: March 1, 2012
    Publication date: December 19, 2013
    Applicant: Basell Polyolefine GmbH
    Inventors: Iakovos Vittorias, Barbara Gall, Sebastian Weiand, Andrei Gonioukh, Stephan Schmitz, Klaus Berhalter, Gerd Mannebach, Markus Busch, Thomas Herrmann
  • Publication number: 20130274424
    Abstract: Process for monitoring the polymerization of ethylene or ethylene and comonomers in the presence of free-radical polymerization initiator at pressures in the range of from 160 MPa to 350 MPa and temperatures in the range of from 100° C. to 350° C.
    Type: Application
    Filed: December 19, 2011
    Publication date: October 17, 2013
    Applicant: BASELL POLYOLEFINE GmbH
    Inventors: Sebastian Weiand, Wolfgang Gsella, Victor Kuhne, Christian-Ulrich Schmidt, Tom Zimmermann