公开(公告)号：US20230257567A1

公开(公告)日：2023-08-17

申请号：US18020680

申请日：2021-08-25

Applicant: Borealis AG

Inventor： Jingbo Wang ,  Markus Gahleitner ,  Klaus Bernreitner ,  Pauli Leskinen ,  Peter Niedersuess ,  Stefan Ortner

IPC: C08L23/14

CPC classification number: C08L23/14

Abstract: The present invention relates to a film, preferably an unoriented film, comprising a polypropylene composition comprising a random copolymer of propylene monomer units and ethylene comonomer units, wherein the random copolymer has a content of ethylene comonomer units of from 0.5 to 4.0 wt %, based on the total weight amount of monomer units in the random copolymer, the polypropylene composition has a melt flow rate MFR2 of from 0.5 to 20.0 g/10 min, determined according to ISO 1133 at a temperature of 230° C. and a load of 2.16 kg, and the film has a tensile modulus in machine direction TM-MD in the range of from 450 to 850 MPa, when measured according to ISO 527-3 on a 50 μm monolayer cast film, a process for producing such a film and the use of such a polypropylene composition for the production of a film with an improved balance of properties of tensile modulus and protrusion impact.

公开(公告)号：US20230174759A1

公开(公告)日：2023-06-08

申请号：US17925617

申请日：2021-05-17

Applicant: Borealis AG

Inventor： Jingbo Wang ,  Markus Gahleitner ,  Klaus Bernreitner ,  Pauli Leskinen ,  Georg Grestenberger

IPC: C08L23/12 ,  C08K7/14 ,  C08J3/20

CPC classification number: C08L23/12 ,  C08K7/14 ,  C08J3/203 ,  C08L2205/08 ,  C08L2314/06 ,  C08J2323/12 ,  C08J2451/06

Abstract: Fiber reinforced composite comprising a polypropylene with high melting temperature and very narrow molecular weight distribution.

公开(公告)号：US11618794B2

公开(公告)日：2023-04-04

申请号：US17623300

申请日：2020-06-19

Applicant: Borealis AG

Inventor： Jingbo Wang ,  Markus Gahleitner ,  Pauli Leskinen ,  Klaus Bernreitner ,  Katja Ellen Klimke ,  Markku Vahteri

IPC: C08F210/06

Abstract: The present invention relates to a propylene polymer composition comprising a long chain branched propylene polymer, wherein said propylene polymer composition has a) a crystallization temperature Tc of less than 115° C., b) a melting temperature Tm of less than 155° C. c) a F30 melt strength of from 5.0 to less than 30.0 cN, and d) a V30 melting extensibility of more than 190 mm/s, a process for producing said propylene polymer composition by reactive modification of a propylene polymer in the presence of a peroxide, an article comprising said propylene polymer composition, the use of said propylene polymer composition for producing an article.

公开(公告)号：US20230001340A1

公开(公告)日：2023-01-05

申请号：US17779240

申请日：2020-12-03

Applicant: BOREALIS AG

Inventor： Jingbo Wang ,  Markus Gahleitner ,  Klaus Bernreitner ,  Joachim Fiebig ,  Henk Van Paridon ,  Wilhelmus Sars ,  Gustaf Tobieson

IPC: B01D39/16 ,  D01F6/06 ,  D04H1/56 ,  C08F4/6592 ,  C08F10/06

Abstract: The present invention relates to filtration media made from melt-blown fibers having improved barrier properties. The melt-blown fibers in the filtration media of the invention are made of a visbroken metallocene-catalyzed propylene homopolymer composition with specified melting temperature Tm and molecular weight distribution (MWD).

公开(公告)号：US20220411618A1

公开(公告)日：2022-12-29

申请号：US17778573

申请日：2020-11-09

Applicant: BOREALIS AG

Inventor： Daniela Mileva ,  Jingbo Wang ,  Klaus Bernreitner ,  Markus Gahleitner

IPC: C08L23/14 ,  C08L23/16 ,  B29C45/00 ,  B29C45/14

Abstract: A polypropylene composition (C) comprising: i) from 55.0 to 95.0 wt.-% of a heterophasic propylene copolymer (HECO), ii) from 5.0 to 45.0 wt. -% of a copolymer (CP), preferably a random copolymer, of propylene and at least one comonomer selected from the group of C4-C10 alpha-olefins that has been synthesized in the presence of a single-site catalyst, wherein the polypropylene composition (C) has a melt flow rate MFR2 of from 1.0 to 30.0 g/10 min, and wherein the polypropylene composition (C) has a Charpy Notched Impact Strength NIS of greater than or equal to 16.0 kJ/m2.

公开(公告)号：US20220347980A1

公开(公告)日：2022-11-03

申请号：US16482133

申请日：2018-01-29

Applicant: BOREALIS AG

Inventor： Klaus Bernreitner ,  Martina Sandholzer ,  Stefan Hellstrom ,  Francis Costa ,  Bernt-Ake Sultan ,  Staffan Josefsson ,  Kristina Akyuz Karlsson

IPC: B32B27/08 ,  B32B27/32 ,  B32B7/12 ,  B32B27/30 ,  B32B17/10 ,  B32B37/15 ,  B32B37/12 ,  B32B27/20 ,  H01L31/048

Abstract: An article comprising a layer element (LE) of at least two layers, first layer and second layer.

公开(公告)号：US11485845B2

公开(公告)日：2022-11-01

申请号：US17595839

申请日：2020-05-20

Applicant: Borealis AG

Inventor： Jingbo Wang ,  Markus Gahleitner ,  Klaus Bernreitner ,  Pauli Leskinen ,  Cornelia Tranninger

IPC: C08F210/16 ,  C08L23/16 ,  B29C48/00 ,  C08F2/00 ,  C08F4/659 ,  C08F4/6592 ,  C08F210/02 ,  C08F210/06 ,  B29L31/00

Abstract: New C2C3 random copolymers, which combine low sealing initiation temperature (SIT), high hot-tack, low C6-solubles, good optical properties and an improved stiffness/impact balance, which are particularly suited for preparing blown films. The present invention is furthermore related to the manufacture of said copolymers and to their use, as well as to the blown films comprising such C2C3 random copolymers.

公开(公告)号：US20220259339A1

公开(公告)日：2022-08-18

申请号：US17627207

申请日：2020-07-15

Applicant: BOREALIS AG

Inventor： Jingbo Wang ,  Markus Gahleitner ,  Klaus Bernreitner ,  Pauli Leskinen ,  Markku Vahteri ,  Stefan Ortner

IPC: C08F110/06 ,  C08F2/00 ,  C08F4/6592 ,  C08F4/659 ,  C08J5/18 ,  C08K3/36 ,  C08K5/098 ,  C08K5/20 ,  B29C48/00 ,  B29C48/40 ,  B29C48/08 ,  B29C48/10

Abstract: The invention is related to film comprising a polypropylene composition showing improved coefficiency of friction as well as optical properties.

公开(公告)号：US11292156B2

公开(公告)日：2022-04-05

申请号：US15534447

申请日：2015-12-07

Applicant: BOREALIS AG

Inventor： Martina Sandholzer ,  Klaus Bernreitner ,  Hermann Braun ,  Hermann Prokschi ,  Ulrich Schreider ,  Frank Schroder ,  Thomas Hager ,  Katja Klimke ,  Markus Gahleitner

IPC: B29B9/06 ,  B29C48/04 ,  B29B9/12 ,  C08L23/14 ,  C08K5/00 ,  C08L23/16 ,  B29B9/16

Abstract: The present invention provides a process for extruding and pelletising a propylene copolymer. The copolymer has a content of comonomer from 5 to 40% by mole, a melt flow rate MFR2 measured at 230° C. under a load of 2.16 kg of from 0.5 to 15 g/10 min and a content of cold xylene soluble material of from 20 to 60% by weight. The process comprises extruding the propylene copolymer through a die plate into an underwater pelletiser and cutting strands of the propylene copolymer into pellets in the underwater pelletiser, wherein the ratio of the mass flow rate of the propylene copolymer to the mass flow rate of the cooling water is from 0.020 to 0.060; and the propylene copolymer comprises a polymeric nucleating agent.

公开(公告)号：US11248115B2

公开(公告)日：2022-02-15

申请号：US16323748

申请日：2017-08-09

Applicant: BOREALIS AG

Inventor： Minna Aarnio-Winterhof ,  Martina Sandholzer ,  Klaus Bernreitner

IPC: C08L23/14 ,  B32B27/32 ,  C08K3/32 ,  H01L31/049 ,  H01L31/048 ,  B32B27/18 ,  B32B7/12 ,  B32B27/20 ,  C08K3/01 ,  B32B27/08 ,  C08K3/34 ,  C08K5/5313 ,  C08F210/06 ,  C08K3/40 ,  C08K7/14

Abstract: The present invention relates to a polymer composition with flame retardant activity, to a use of the polymer composition for producing an article, to an article comprising the polymer composition, preferably to an article which comprises a layer element comprising at least one layer which comprises the polymer composition.