Patents by Inventor Kristien Roegiers

Kristien Roegiers 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: 10501615
    Abstract: The present invention relates to a polypropylene composition comprising: a first polypropylene homopolymer or random copolymer (PPR1) having a comonomer content lower than the comonomer content of the second polypropylene, a second polypropylene (PPR2) which is a random copolymer of propylene and of the comonomer; said comonomer being an alpha-olefin different from propylene, the melting temperature of the polypropylene composition (Tm(PPR)) being defined as Tm(PPR)>165?6.9*[total comonomer content]?8.4*[comonomer content of the first polypropylene], the difference between the melting temperature and the crystallization temperature of the polypropylene composition ranges from 27 and 33, and a xylene soluble fraction (XS) at 23° C. of not more than 1.5 wt. %. The present invention also relates to a process for the preparation of said polypropylene composition. The present invention further relates to the use of said polypropylene composition for producing films or moulded articles.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: December 10, 2019
    Assignee: Total Research & Technology Feluy
    Inventors: Alain Standaert, Kristien Roegiers, Aurélien Vantomme
  • Publication number: 20180340058
    Abstract: The present invention relates to a polypropylene composition comprising: a first polypropylene homopolymer or random copolymer (PPR1) having a comonomer content lower than the comonomer content of the second polypropylene, a second polypropylene (PPR2) which is a random copolymer of propylene and of the comonomer; said comonomer being an alpha-olefin different from propylene, the melting temperature of the polypropylene composition (Tm(PPR)) being defined as Tm(PPR)>165?6.9*[total comonomer content]?8.4*[comonomer content of the first polypropylene], the difference between the melting temperature and the crystallization temperature of the polypropylene composition ranges from 27 and 33, and a xylene soluble fraction (XS) at 23° C. of not more than 1.5 wt. %. The present invention also relates to a process for the preparation of said polypropylene composition. The present invention further relates to the use of said polypropylene composition for producing films or moulded articles.
    Type: Application
    Filed: January 22, 2016
    Publication date: November 29, 2018
    Inventors: Alain Standaert, Kristien Roegiers, Aurélien Vantomme
  • Patent number: 9650465
    Abstract: The present invention concerns heterophasic propylene copolymers, comprising a propylene homopolymer (PPH) and an ethylene-propylene rubber (EPR), having a very broad molecular weight distribution, a well-defined total ethylene content and a specific intrinsic viscosities of the ethylene-propylene rubber (EPR). The invention further concerns the process to produce such heterophasic propylene copolymers. The heterophasic propylene copolymers of the present invention are particularly suited for pails, pallets, IBCs and crates. In particular, the heterophasic propylene copolymers of the present invention are characterized by an improved resistance to creep.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: May 16, 2017
    Assignee: Total Research & Technology Feluy
    Inventors: Kristien Roegiers, Geert Snellings, Alain Standaert
  • Patent number: 8821784
    Abstract: This invention discloses bottles and pre-forms prepared by injection-stretch-blow-molding (ISBM) from a composition comprising polypropylene and an inorganic non-sorbitol nucleating agent.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: September 2, 2014
    Assignee: Total Research & Technology Feluy
    Inventors: Valerie Smits, Emmanuel Humbeeck, Kristien Roegiers
  • Publication number: 20110124798
    Abstract: The present invention concerns heterophasic propylene copolymers, comprising a propylene homopolymer (PPH) and an ethylene-propylene rubber (EPR), having a very broad molecular weight distribution, a well-defined total ethylene content and a specific intrinsic viscosities of the ethylene-propylene rubber (EPR). The invention further concerns the process to produce such heterophasic propylene copolymers. The heterophasic propylene copolymers of the present invention are particularly suited for pails, pallets, IBCs and crates. In particular, the heterophasic propylene copolymers of the present invention are characterized by an improved resistance to creep.
    Type: Application
    Filed: December 18, 2008
    Publication date: May 26, 2011
    Applicant: TOTAL PETROCHEMICALS RESEARCH FELUY
    Inventors: Kristien Roegiers, Geert Snellings, Alain Standaert
  • Patent number: 7659349
    Abstract: Degraded polypropylene (co)polymer modified with a linear dialkylperoxide in order to retain its impact strength and a process for its preparation.
    Type: Grant
    Filed: April 10, 2006
    Date of Patent: February 9, 2010
    Assignee: Total Petrochemicals Research Feluy
    Inventor: Kristien Roegiers
  • Publication number: 20080246193
    Abstract: This invention discloses bottles and pre-forms prepared by injection-stretch-blow-moulding (ISBM) from a composition comprising polypropylene and an inorganic non-sorbitol nucleating agent.
    Type: Application
    Filed: December 21, 2005
    Publication date: October 9, 2008
    Inventors: Valerie Smits, Emmanuel Humbeeck, Kristien Roegiers
  • Publication number: 20060258815
    Abstract: Degraded polypropylene (co)polymer modified with a linear dialkylperoxide in order to retain its impact strength and a process for its preparation.
    Type: Application
    Filed: April 10, 2006
    Publication date: November 16, 2006
    Inventor: Kristien Roegiers
  • Publication number: 20050277742
    Abstract: This invention relates to the use of a linear dialkyl peroxide having an hexyne or an hexene backbone, for producing a controlled rheology polypropylene heterophasic copolymer of melt index MI2 larger than 15 g/10 min, having simultaneously a very high impact resistance and a high flexural modulus.
    Type: Application
    Filed: November 13, 2002
    Publication date: December 15, 2005
    Inventor: Kristien Roegiers