Patents by Inventor Virginie Cirriez

Virginie Cirriez 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: 11952444
    Abstract: The present invention relates to a polyethylene resin prepared using a continuous process having and at least one metallocene catalyst composition: a molecular weight distribution Mw/Mn lower than 6.5; a molecular weight distribution Mw/Mn of at least 3.5; a melt index ranging from an HLMI of at least 1.20 g/10 min to an MI2 of at most 6.0 g/10 min wherein MI2 is determined according to ISO 1133:1997 at a temperature of 190° C. and under a load of 2.16 kg, and HLMI is determined according to ISO 1133:1997, at a temperature of 190° C. and under a load of 21.6 kg; melt index ratio HLMI/MI2 below or equal to 30; and a melt strength of X in Newtons, as determined by Göttfert Rheotens Melt Strength Apparatus, 190° C., as described in the Experimental section, satisfying the following equations (1) and/or (2) X is greater than ?0.026 ln(MI2)+0.0498??(1) X is greater than ?0.026 ln(HLMI)+0.1334??(2) with Mw being the weight-average molecular weight and Mn being the number-average molecular weight.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: April 9, 2024
    Assignee: TOTAL RESEARCH & TECHNOLOGY FELUY
    Inventors: Virginie Cirriez, Alexandre Welle, Aurélien Vantomme, Pierre Bernard
  • Patent number: 11919980
    Abstract: The present invention relates to a catalyst composition comprising: catalyst component A comprising a bridged metallocene compound with two tetrahydroindenyl groups, each group being unsubstituted or substituted; catalyst component B comprising a bridged metallocene compound with a substituted or unsubstituted cyclopentadienyl group and a substituted or unsubstituted fluorenyl group; an optional activator; an optional support; and an optional co-catalyst. The present invention also relates to a polymerization process using said composition. The invention further relates to olefin polymers at least partially catalyzed by said catalyst composition and articles comprising said olefin polymers.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: March 5, 2024
    Assignee: TOTAL RESEARCH & TECHNOLOGY FELUY
    Inventors: Virginie Cirriez, Alexandre Welle, Aurélien Vantomme
  • Patent number: 11274171
    Abstract: The present invention relates to a catalyst composition comprising: catalyst component A comprising a bridged metallocene compound with two indenyl groups, each indenyl being substituted with one or more substituents, wherein at least one of the substituent is an aryl or heteroaryl; catalyst component B comprising a bridged metallocene compound with a substituted or unsubstituted cyclopentadienyl group and a substituted or unsubstituted fluorenyl group; an optional activator; an optional support; and an optional co-catalyst. The present invention also relates to a polymerization process using said composition. The invention further relates to olefin polymers at least partially catalyzed by said catalyst composition and articles comprising said olefin polymers.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: March 15, 2022
    Assignee: Total Research & Technology Feluy
    Inventors: Virginie Cirriez, Alexandre Welle, Aurélien Vantomme
  • Publication number: 20210388133
    Abstract: The present invention relates to a polyethylene resin prepared using a continuous process having and at least one metallocene catalyst composition: a molecular weight distribution Mw/Mn lower than 6.5; a molecular weight distribution Mw/Mn of at least 3.5; a melt index ranging from an HLMI of at least 1.20 g/10 min to an MI2 of at most 6.0 g/10 min wherein MI2 is determined according to ISO 1133:1997 at a temperature of 190° C. and under a load of 2.16 kg, and HLMI is determined according to ISO 1133:1997, at a temperature of 190° C. and under a load of 21.6 kg; melt index ratio HLMI/MI2 below or equal to 30; and a melt strength of X in Newtons, as determined by Göttfert Rheotens Melt Strength Apparatus, 190° C., as described in the Experimental section, satisfying the following equations (1) and/or (2) X is greater than ?0.026 ln(MI2)+0.0498 ??(1) X is greater than ?0.026 ln(HLMI)+0.1334 ??(2) with Mw being the weight-average molecular weight and Mn being the number-average molecular weight.
    Type: Application
    Filed: October 14, 2019
    Publication date: December 16, 2021
    Inventors: Virginie Cirriez, Alexandre Welle, Aurélien Vantomme, Pierre Bernard
  • Publication number: 20210155724
    Abstract: The present invention relates to a catalyst composition comprising: catalyst component A comprising a bridged metallocene compound with two indenyl groups, each indenyl being substituted with one or more substituents, wherein at least one of the substituent is an aryl or heteroaryl; catalyst component B comprising a bridged metallocene compound with a substituted or unsubstituted cyclopentadienyl group and a substituted or unsubstituted fluorenyl group; an optional activator; an optional support; and an optional co-catalyst. The present invention also relates to a polymerization process using said composition. The invention further relates to olefin polymers at least partially catalyzed by said catalyst composition and articles comprising said olefin polymers.
    Type: Application
    Filed: August 2, 2018
    Publication date: May 27, 2021
    Inventors: Virginie Cirriez, Alexandre Welle, Aurélien Vantomme
  • Publication number: 20210087311
    Abstract: The present invention relates to a catalyst composition comprising: catalyst component A comprising a bridged metallocene compound with two tetrahydroindenyl groups, each group being unsubstituted or substituted; catalyst component B comprising a bridged metallocene compound with a substituted or unsubstituted cyclopentadienyl group and a substituted or unsubstituted fluorenyl group; an optional activator; an optional support; and an optional co-catalyst. The present invention also relates to a polymerization process using said composition. The invention further relates to olefin polymers at least partially catalyzed by said catalyst composition and articles comprising said olefin polymers.
    Type: Application
    Filed: August 2, 2018
    Publication date: March 25, 2021
    Inventors: Virginie Cirriez, Alexandre Welle, Aurélien Vantomme