Patents by Inventor Leen De Groof

Leen De Groof 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).

  • Polyethylene composition for artificial turf yarn
    Patent number: 10836889
    Abstract: Disclosed herein is a polyethylene composition which includes 45% to 95% by weight of a metallocene-catalyzed polyethylene A. The polyethylene A has a density ranging from 0.916 g/cm3 to 0.940 g/cm3, and a melt index MI2 of at least 1.5 g/10 min to at most 4.0 g/10 min. The polyethylene composition has at least 5% to at most 55% by weight of a metallocene-catalyzed polyethylene B. The metallocene-catalyzed polyethylene B includes 45% to 75% by weight of a metallocene-catalyzed polyethylene B1. The polyethylene B1 has a density of at most 0.918 g/cm3, a melt index MI2 lower than the melt index MI2 of polyethylene A, and includes 25% to 55% by weight of a metallocene-catalyzed polyethylene B2. The density of polyethylene B2 is higher than the density of polyethylene B1. The melt index MI2 of polyethylene B2 is higher than the melt index MI2 of polyethylene B1.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: November 17, 2020
    Assignee: Total Research & Technology Feluy
    Inventors: Jeroen Wassenaar, Leen De Groof
  • Polyethylene Composition for Artificial Turf Yarn
    Publication number: 20190185647
    Abstract: The present invention relates to a polyethylene composition comprising: a) at least 45% to at most 95% by weight of a metallocene-catalyzed polyethylene A, wherein % by weight is based on the total weight of the polyethylene composition; wherein polyethylene A has a density of at least 0.916 g/cm3 to at most 0.940 g/cm3, as measured according to ISO 1183-2:2004 at a temperature of 23° C.; and a melt index MI2 of at least 1.5 g/10 min to at most 4.0 g/10 min, as measured according to ISO 1133 Procedure B at a temperature of 190° C. and a load of 2.16 kg; b) at least 5% to at most 55% by weight of a metallocene-catalyzed polyethylene B, wherein % by weight is based on the total weight of the polyethylene composition; wherein said metallocene-catalyzed polyethylene B comprises b1) at least 45% to at most 75% by weight of a metallocene-catalyzed polyethylene B1, wherein % by weight is based on the total weight of the metallocene-catalyzed polyethylene B; wherein polyethylene B1 has a density of at most 0.
    Type: Application
    Filed: June 29, 2017
    Publication date: June 20, 2019
    Inventors: Jeroen Wassenaar, Leen De Groof
  • Blends of polar low density ethylene copolymers and poly(hydroxy carboxylic acid)s
    Patent number: 8324320
    Abstract: A resin composition comprising at least 0.1% by weight of poly(hydroxy carboxylic acid) and at least 50% by weight of polar low density polyethylene, the pLDPE comprising from 0.5 to 25% by weight of a polar vinyl-containing comonomer.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: December 4, 2012
    Assignee: Total Petrochemicals Research Feluy
    Inventors: Jean-Michel Brusson, Leen De Groof
  • Polyethylene and poly(hydroxyl carboxylic acid) blends
    Patent number: 8283415
    Abstract: A resin composition comprising at least 0.1% by weight of poly(hydroxy carboxylic acid) and at least 50% by weight of polyethylene prepared with a single-site catalyst, preferably a metallocene.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: October 9, 2012
    Assignee: Total Petrochemicals Research Feluy
    Inventors: Jean-Michel Brusson, Leen De Groof
  • POLYETHYLENE AND POLY(HYDROXY CARBOXYLIC ACID) MULTILAYER FILMS
    Publication number: 20110305858
    Abstract: A multilayer film comprising a first layer comprising a poly(hydroxy carboxylic acid) and a second layer adjacent to the first layer comprising more than 50% by weight of polyethylene prepared with a single-site catalyst, preferably a metallocene catalyst.
    Type: Application
    Filed: December 22, 2009
    Publication date: December 15, 2011
    Applicant: TOTAL PETROCHEMICALS RESEARCH FELUY
    Inventors: Leen De Groof, Jean-Michel Brusson
  • Polyethylene and Poly(hydroxyl carboxylic acid) Blends
    Publication number: 20110166294
    Abstract: A resin composition comprising at least 0.1% by weight of poly(hydroxy carboxylic acid) and at least 50% by weight of polyethylene prepared with a single-site catalyst, preferably a metallocene.
    Type: Application
    Filed: February 22, 2010
    Publication date: July 7, 2011
    Applicant: TOTAL PETROCHEMICALS RESEARCH FELUY
    Inventors: Jean-Michel Brusson, Leen De Groof