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: 20190330459
    Abstract: The present invention is directed to a polypropylene composition (C) comprising a heterophasic propylene copolymer (RAHECO) and a propylene homopolymer (H-PP) as well as a process for the preparation of said polypropylene composition and a film obtained from said polypropylene composition (C).
    Type: Application
    Filed: June 26, 2017
    Publication date: October 31, 2019
    Inventors: Jingbo Wang, Friedrich Berger, Petar Doshev, Manfred Gruenberger, Martina Sandholzer, Markus Gahleitner
  • Patent number: 10450451
    Abstract: Polypropylene composition comprising a heterophasic propylene copolymer and a mineral filler, wherein said heterophasic propylene copolymer has a melting temperature in the range of 140 to 155° C., a xylene cold soluble content in the range of 20 to 35 wt.-% and a comonomer content of the xylene cold soluble fraction in the range of 18 to 95 wt.-%, wherein further the weight ratio between heterophasic propylene copolymer and the mineral filler is in the range of 2/1 to 4/1.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: October 22, 2019
    Assignee: Borealis AG
    Inventors: Jingbo Wang, Luigi Resconi, Petar Doshev, Markus Gahleitner
  • Publication number: 20190301055
    Abstract: Melt-blown fiber comprising two polypropylenes which differ in their molecular weight.
    Type: Application
    Filed: June 2, 2017
    Publication date: October 3, 2019
    Inventors: Jingbo Wang, Joachim Fiebig, Henk Van Paridon, Markus Gahleitner, Petar Doshev, Georg Grestenberger, Antti Tynys
  • Publication number: 20190301054
    Abstract: Melt-blown fiber comprising two polypropylenes which differ in their molecular weight.
    Type: Application
    Filed: June 2, 2017
    Publication date: October 3, 2019
    Inventors: Jingbo Wang, Petar Doshev, Antti Tynys, Joachim Fiebig
  • Patent number: 10358546
    Abstract: Polymer composition comprising at least one polypropylene homopolymer and/or random copolymer, up to 15 wt % of at least one polyethylene, optionally at least one elastomer in an amount of 8 to 40 wt % and optionally fillers and/or additives in an amount of up to 45 wt % based on the total weight of the final polymer composition with the at least one polyethylene having a density of higher than 940 kg/m3, a content of hexane hot extractables of below 0.80 wt % preferably below 0.60 wt %, most preferably below 0.40 wt % and a copolymer/homopolymer (COHO) ratio measured by Temperature Rising Elution Fraction (TREF) up to 6%.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: July 23, 2019
    Assignee: Borealis AG
    Inventors: Jingbo Wang, Claudia Kniesel, Petar Doshev, Floran Prades
  • Publication number: 20190169409
    Abstract: The present invention is directed to a polypropylene composition, said polypropylene composition comprising two different polypropylene fractions (PP1) and (PP2), wherein the first polypropylene (PP1) has a weight molecular weight Mw in the range of above 45 kg/mol to below 65 kg/mol and a melting temperature of at least 140° C.
    Type: Application
    Filed: June 2, 2017
    Publication date: June 6, 2019
    Inventors: Jingbo Wang, Markus Gahleitner, Petar Doshev, Georg Grestenberger
  • Publication number: 20190077946
    Abstract: Polymer composition comprising at least one polypropylene homopolymer and/or random copolymer, up to 15 wt % of at least one polyethylene, optionally at least one elastomer in an amount of 8 to 40 wt % and optionally fillers and/or additives in an amount of up to 45 wt % based on the total weight of the fmal polymer composition with the at least one polyethylene having a density of higher than 940 kg/m3, a content of hexane hot extractables of below 0.80 wt % preferably below 0.60 wt %, most preferably below 0.40 wt % and a copolymer/homopolymer (COHO) ratio measured by Temperature Rising Elution Fraction (TREF) up to 6%.
    Type: Application
    Filed: July 27, 2016
    Publication date: March 14, 2019
    Inventors: Jingbo Wang, Claudia Kniesel, Petar Doshev, Floran Prades
  • Patent number: 10081726
    Abstract: Composite comprising a heterophasic propylene copolymer (HECO), a high density polyethylene, a cellulose-based filler and a compatibilizer.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: September 25, 2018
    Assignee: Borealis AG
    Inventors: Béla Pukánszky, Karoly Renner, Szabolcs Kalmar, Thomas Lummerstorfer, Hermann Braun, Petar Doshev, Michael Jerabek
  • Patent number: 10053568
    Abstract: Heterophasic propylene copolymer for retortability, said copolymer has a comonomer content in the range of 1.5 to 14.0 mol-%; a melting temperature in the range of 140 to 15° C. and a xylene cold soluble (XCS) fraction in the range of 10.0 to below 30.0 wt.-%.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: August 21, 2018
    Assignee: BOREALIS AG
    Inventors: Jingbo Wang, Petar Doshev, Markus Gahleitner, Johanna Lilja
  • Publication number: 20180215908
    Abstract: Composite comprising a heterophasic propylene copolymer (HECO), a high density polyethylene, a cellulose-based filler and a compatibilizer.
    Type: Application
    Filed: August 11, 2016
    Publication date: August 2, 2018
    Inventors: Béla Pukánszky, Karoly Renner, Szabolcs Kalmar, Thomas Lummerstorfer, Hermann Braun, Petar Doshev, Michael Jerabek
  • Patent number: 9988523
    Abstract: Polypropylene composition which combines low sealing initiation temperature (SIT) and high melting point (Tm), furthermore showing a broad sealing window, low hexane solubles and good optical properties, like low haze.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: June 5, 2018
    Assignee: BOREALIS AG
    Inventors: Cornelia Tranninger, Kauno Alastalo, Johanna Lilja, Kristin Reichelt, Petar Doshev
  • Patent number: 9944780
    Abstract: Heterophasic propylene copolymer comprising a propylene-C4 to C12 ?-olefin copolymer as a matrix in which an ethylene-propylene rubber is dispersed, said heterophasic propylene copolymer has good mechanical properties and low extractables.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: April 17, 2018
    Assignee: BOREALIS AG
    Inventors: Jingbo Wang, Petar Doshev, Markus Gahleitner, Pauli Leskinen
  • Patent number: 9932469
    Abstract: A heterophasic propylene ethylene copolymer having an MFR2 of 0.5 to 100 g/10 m in and obtained using single site catalysis comprising: (i) a propylene homopolymer or propylene ethylene copolymer matrix having up to 4 wt % ethylene; and (ii) an ethylene propylene rubber (EPR) dispersed in the matrix; said heterophasic propylene ethylene copolymer having a xylene cold soluble content (XS) of 20 to 40%; wherein the ethylene content of the xylene cold soluble fraction of said heterophasic propylene ethylene copolymer is between 70 and 90 wt. %; wherein the xylene cold soluble fraction of said heterophasic propylene ethylene copolymer has an intrinsic viscosity (IV) of 3.0 dl/g or more; and wherein the melting enthalpy (?HM) of the heterophasic propylene ethylene copolymer is between 10 and 30 J/g at a temperature of 0 to 130° C.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: April 3, 2018
    Assignee: Borealis, AG
    Inventors: Jingbo Wang, Petar Doshev, Luigi Resconi, Wilfried Toltsch
  • Publication number: 20180030256
    Abstract: Polypropylene composition which combines low sealing initiation temperature (SIT) and high melting point (Tm), furthermore showing a broad sealing window, low hexane solubles and good optical properties, like low haze.
    Type: Application
    Filed: February 29, 2016
    Publication date: February 1, 2018
    Inventors: Cornelia Tranninger, Kauno Alastalo, Johanna Lilja, Kristin Reichelt, Petar Doshev
  • Patent number: 9765209
    Abstract: Propylene homo- or copolymer composition comprising an in-situ reactor blend of a Ziegler-Natta catalysed, nucleated polypropylene (znPP) and a metallocene catalysed polypropylene (mcPP), in a weight ratio in the range of 6:94 to 50:50 (wt % znPP:wt % mcPP), preferably in the range of 10:90 to 44:56 (wt % znPP:wt % mcPP), having an excellent balance between optical properties, mechanical properties, thermal properties and processing properties; a process for its production and the use of a mixture of a Ziegler-Natta catalyst system and a metallocene catalyst system.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: September 19, 2017
    Assignee: Borealis AG
    Inventors: Saeid Kheirandish, Petar Doshev, Pauli Leskinen, Bo Malm
  • Publication number: 20170218172
    Abstract: The present invention presents a new method for preparation of an ?-nucleated crystalline polypropylene based on polymeric nucleating agents and very high cooling rates, further the ?-nucleated crystalline polypropylene based on polymeric nucleating agents derived thereof and its use in final articles derivable thereof.
    Type: Application
    Filed: October 2, 2015
    Publication date: August 3, 2017
    Applicant: BOREALIS AG
    Inventors: Jingbo WANG, Daniela MILEVA, Petar DOSHEV, Markus GAHLEITNER
  • Patent number: 9708481
    Abstract: Blow molded article comprising a propylene copolymer composition, the propylene copolymer composition comprises (a) a propylene copolymer (A) having a comonomer content of 0.1 to 2.5 mol-%, the comonomers are C5 to C12 ?-olefins, and (b) a propylene copolymer (B) having a comonomer content of 1.0 to 7.0 mol-%, the comonomers are C5 to C12 ?-olefins, wherein further (i) the comonomer content in the propylene copolymer (A) is lower compared to the comonomer content in the propylene copolymer (B), (ii) the propylene copolymer composition has a comonomer content of 0.4 to 5.0 mol-%, the comonomers are C5 to C12 ?-olefins.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: July 18, 2017
    Assignee: Borealis AG
    Inventors: Jingbo Wang, Katja Klimke, Petar Doshev, Pauli Leskinen
  • Publication number: 20170145199
    Abstract: Heterophasic propylene copolymer comprising a propylene —C4 to C12 ?-olefin copolymer as a matrix in which an ethylene-propylene rubber is dispersed, said heterophasic propylene copolymer has good mechanical properties and low extractables.
    Type: Application
    Filed: April 1, 2015
    Publication date: May 25, 2017
    Inventors: Jingbo Wang, Petar Doshev, Markus Gahleitner, Pauli Leskinen
  • Publication number: 20170137617
    Abstract: Polypropylene composition comprising a heterophasic propylene copolymer and a mineral filler, wherein said heterophasic propylene copolymer has a melting temperature in the range of 140 to 155° C., a xylene cold soluble content in the range of 20 to 35 wt.-% and a comonomer content of the xylene cold soluble fraction in the range of 18 to 95 wt.-%, wherein further the weight ratio between heterophasic propylene copolymer and the mineral filler is in the range of 2/1 to 4/1.
    Type: Application
    Filed: May 18, 2015
    Publication date: May 18, 2017
    Applicant: BOREALIS AG
    Inventors: Jingbo WANG, Luigi RESCONI, Petar DOSHEV, Markus GAHLEITNER
  • Publication number: 20170066912
    Abstract: Heterophasic propylene copolymer for retortability, said copolymer has a comonomer content in the range of 1.5 to 14.0 mol-%; a melting temperature in the range of 140 to 15° C. and a xylene cold soluble (XCS) fraction in the range of 10.0 to below 30.0 wt.-%.
    Type: Application
    Filed: February 3, 2015
    Publication date: March 9, 2017
    Inventors: Jingbo Wang, Petar Doshev, Markus Gahleitner, Johanna Lilja