Patents by Inventor Petar Doshev

Petar Doshev 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).

  • Publication number: 20120220727
    Abstract: Heterophasic polypropylene resin having a MFR (2.16 kg, 230° C.) of at least 1.0 g/1 Omin, determined according to ISO 1133, comprising a propylene random copolymer matrix phase (A), and an ethylene-propylene copolymer rubber phase (B) dispersed within the matrix phase, wherein the heterophasic polypropylene resin has a fraction soluble in p-xylene at 25° C. (XCS fraction) being present in the resin in an amount of 15 to 45 wt % whereby the XCS fraction has an ethylene content of 25 wt % or lower, and a fraction insoluble in p-xylene at 25 0C (XCU fraction), said heterophasic polypropylene resin being characterised by a strain hardening factor (SHF) of 1.7 to 4.0 when measured at a strain rate of 3.0 s?1 and a Hencky strain of 3.0.
    Type: Application
    Filed: October 28, 2010
    Publication date: August 30, 2012
    Applicant: BOREALIS AG
    Inventors: Katja Klimke, Petar Doshev, Susana Filipe, Anh Tuan Tran
  • Publication number: 20120214947
    Abstract: Heterophasic polypropylene resin comprising a propylene random copolymer matrix phase (A), and an ethylene-propylene copolymer rubber phase (B) dispersed within the matrix phase wherein the heterophasic polypropylene resin has a MFR (2.16 kg, 230° C.) of 1.0 to 100 g/10 min, determined according to ISO 1133, and a fraction soluble in p-xylene at 25° C. (XCS fraction) which is present in the resin in an amount of 28 to 50 wt %, and which has a molecular weight distribution (Mw/Mn) of 1.0 to 4.0.
    Type: Application
    Filed: October 21, 2010
    Publication date: August 23, 2012
    Applicant: BOREALIS AG
    Inventors: Katja Klimke, Petar Doshev
  • Publication number: 20120015170
    Abstract: The present invention relates to a high flow polypropylene composition comprising (A) a low molecular weight propylene homopolymer fraction and (B) a high molecular weight propylene copolymer fraction, having a comonomer content of not higher than 8 wt %, wherein the ratio between the MFR2 of fraction (A) and the MFR2 of fraction (B) is at least 3 and wherein the MFR2 of the entire composition is at least 5 g/10 min, the values of MFR2 being measured according to ISO 1133 (230° C., 2.16 kg load), and to processes for producing such compositions and to articles made there from.
    Type: Application
    Filed: June 30, 2010
    Publication date: January 19, 2012
    Applicant: BOREALIS AG
    Inventors: Petar Doshev, Pirjo Jaaskelainen, Saeid Kheirandish, Pauli Leskinen, Geir Kristian Johnsen, Hao Ding
  • Publication number: 20100292410
    Abstract: The application provides propylene polymer including at least 80 mol % units derived from propylene and less than 0.5 mol % units derived from a tertiary diene wherein said tertiary diene is not a 1,4-diene, said polymer including 1-50 tertiary double bonds per 10,000 carbon atoms of the main chain of said polymer. The polymer may be obtained using a Ziegler Natta catalyst. The application further provides a long chain branched propylene polymer obtainable from the afore-mentioned propylene polymer including tertiary double bonds.
    Type: Application
    Filed: November 7, 2008
    Publication date: November 18, 2010
    Applicant: BOREALIS TECHNOLOGY OY
    Inventors: Petar Doshev, Svein Nenseth, Tung Pham, Ariid Follestad, Bernt-Ake Sultan
  • Publication number: 20100280206
    Abstract: This application relates to an ethylene polymer having a weight average molecular weight of at least 120,000 including 1-50 tertiary double bonds per 10,000 carbon atoms.
    Type: Application
    Filed: October 11, 2007
    Publication date: November 4, 2010
    Applicant: BOREALIS TECHNOLOGY OY
    Inventors: Ariid Follestad, Petar Doshev, Anne Britt Bjaland, Bernt-Ake Sultan, Magnus Palmlof, Morten Lundquist
  • Publication number: 20100280166
    Abstract: The present invention relates to a heterophasic polypropylene resin comprising a polypropylene homo- or copolymer matrix phase (A) and an ethylene-propylene copolymer phase (B) dispersed within the matrix, wherein the heterophasic polypropylene resin has a fraction insoluble in p-xylene (XCU) at 25° C. with an intrinsic viscosity of 2.0 dl/g or less, determined according to DIN EN ISO 1628-1 and -3, and a fraction soluble in p-xylene (XCS) at 25° C. having an intrinsic viscosity of 2.0 to 4.5 dl/g, determined according to DIN EN ISO 1628-1 and -3, and an amount of ethylene monomer units of 60 to 85 mol %, a heterophasic polypropylene composition comprising such a resin, a process for preparing that resin, and an article made thereof.
    Type: Application
    Filed: October 29, 2008
    Publication date: November 4, 2010
    Applicant: BOREALIS TECHNOLOGY OY
    Inventors: Svein Nenseth, Petar Doshev
  • Publication number: 20100280181
    Abstract: The present invention relates to a heterophasic polypropylene resin comprising a propylene homo- or copolymer matrix (A) and an ethylene-propylene rubber phase (B) dispersed within the matrix, wherein the heterophasic polypropylene resin has a fraction insoluble in p-xylene at 25° C. (XCU) with an intrinsic viscosity of 1.5 dl/g or less, determined according to DIN EN ISO 1628-1 and -3 and an amount of propylene monomer units of at least 95 mol %, and a fraction soluble in p-xylene at 25° C. (XCS) with an intrinsic viscosity of 1.5 to 3.0 dl/g, determined according to DIN EN ISO 1628-1 and -3, and an amount of propylene monomer units of 50 to 75 mol %, and a MFR (2.16 kg, 230° C.) of more than 100 g/10 min, determined according to ISO 1133, a heterophasic polypropylene composition comprising such a resin, a process for preparing that resin, and an article made thereof.
    Type: Application
    Filed: October 28, 2008
    Publication date: November 4, 2010
    Applicant: BOREALIS TECHNOLOGY OY
    Inventors: Svein Nenseth, Petar Doshev
  • Publication number: 20100004378
    Abstract: This invention relates to use of a polymer composition for rotomoulding, wherein said composition comprises: (i) at least two propylene polymer components; and (ii) a nucleating agent.
    Type: Application
    Filed: July 13, 2007
    Publication date: January 7, 2010
    Applicant: BOREALIS TECHNOLOGY OY
    Inventors: Espen Ommundsen, Petar Doshev, Heidi Finstad, Ronny Ervik
  • Publication number: 20090291305
    Abstract: This invention relates to use of a polymer composition for rotomoulding, wherein said composition comprises: (i) at least two propylene polymer components; (ii) a nucleating agent; and (iii) an impact modifier.
    Type: Application
    Filed: July 13, 2007
    Publication date: November 26, 2009
    Applicant: Borealis Technology OY
    Inventors: Espen Ommundsen, Petar Doshev, Heidi Finstad, Ronny Ervik