公开(公告)号：US20250115748A1

公开(公告)日：2025-04-10

申请号：US18832312

申请日：2023-01-24

Applicant: BOREALIS AG

Inventor： Jingbo WANG ,  Friedrich BERGER

IPC: C08L23/0807 ,  C08F4/6592 ,  C08J5/18

Abstract: Disclosed is a polyethylene blend of a specific multimodal metallocene catalysed linear low density polyethylene (mLLDPE) and a specific low density polyethylene (LDPE), which provides films with well-balanced properties, especially dart drop (impact strength), haze and processability.

公开(公告)号：US20240400806A1

公开(公告)日：2024-12-05

申请号：US18699065

申请日：2022-10-07

Applicant: BOREALIS AG

Inventor： Jingbo WANG ,  Friedrich BERGER ,  Arnaud ALABRUNE ,  Elisabeth POTTER

IPC: C08L23/08 ,  B32B27/08 ,  B32B27/32 ,  C08J5/18

Abstract: The invention provides a biaxially oriented film comprising a polymer composition having a density 954 to 970 kg/m3 and an MFR2 of 0.5 to 2.0 g/10 min, wherein said composition comprises: (i) 90 to 99 wt % of a multimodal high density polyethylene (HDPE) having a density of 945-970 kg/m3, an MFR2 of 0.1-3.0 g/10 min and a molecular weight distribution (MWD) of 5-25, the multimodal HDPE comprising at least two fractions: (A) 30 to 70 wt % of a lower molecular weight fraction being a polyethylene with a density of 955-980 kg/m3 and an MFR2 of 100-1000 g/10 min; and (B) 30 to 70 wt % of a higher molecular weight fraction being a polyethylene with a density of 940-960 kg/m3 and an MFR2 of 0.0001-1.0 g/10 min measured according to ISO 1133; and (ii) 1 to 10 wt % of a hydrocarbon resin.

公开(公告)号：US20240279451A1

公开(公告)日：2024-08-22

申请号：US18568696

申请日：2022-06-09

Applicant: BOREALIS AG

Inventor： Jingbo WANG ,  Markus GAHLEITNER ,  Elisabeth POTTER ,  Meta CIGON

IPC: C08L23/16 ,  C08F2/00 ,  C08F210/06 ,  C08K5/3432

CPC classification number: C08L23/16 ,  C08F2/001 ,  C08F210/06 ,  C08K5/3432 ,  C08L2203/16 ,  C08L2205/025 ,  C08L2314/02

Abstract: The invention relates to a polypropylene composition comprising: a) a bimodal random Ziegler-Natta propylene copolymer having a comonomer content of 2.0 to 4.5 wt.-%, said copolymer comprising: (i) 30 to 70 wt.-% of a first propylene copolymer having a comonomer content in the range of 0.1 to 4.5 wt.-% relative to the total weight of the first propylene copolymer, and an MFR2 of 1 to 100 g/10 min; and (ii) 70 to 30 wt.-% of a second propylene copolymer having a comonomer content in the range of 1.0 to 15 wt.-% relative to the total weight of the second propylene copolymer and an MFR2 of 1 to 100 g/10 min; with the proviso that the comonomer content of the second propylene copolymer (ii) is higher than for the first propylene copolymer (i); and b) at least one hindered amine light stabiliser.

公开(公告)号：US20240043584A1

公开(公告)日：2024-02-08

申请号：US18485443

申请日：2023-10-12

Applicant: BOREALIS AG

Inventor： Jingbo WANG ,  Markus GAHLEITNER ,  Klaus BERNREITNER ,  Katja Ellen KLIMKE ,  Friedrich BERGER

IPC: C08F110/06

CPC classification number: C08F110/06 ,  C08F2810/10

Abstract: Disclosed is a process for producing a propylene polymer composition comprising a long chain branched propylene polymer, wherein the propylene polymer composition has
a) a melt flow rate MFR2 (230° C., 2.16 kg) of 0.8 to 6.0 g/10 min
b) a xylene hot insolubles (XHU) fraction in an amount of not more than 0.80 wt %, based on the total weight amount of the propylene polymer composition,
c) a melting temperature Tm of at least 160.0° C.,
d) a F30 melt strength of from 5.0 to less than 30.0 cN, and
e) a heat distortion temperature (HDT) of at least 108° C.,
the process comprising reactive modification of a propylene polymer in the presence of a peroxide. Also disclosed is an article comprising said propylene polymer composition.

公开(公告)号：US20240002559A1

公开(公告)日：2024-01-04

申请号：US18247342

申请日：2021-09-27

Applicant: Borealis AG

Inventor： Jingbo WANG ,  Markus GAHLEITNER ,  Klaus BERNREITNER ,  Pauli LESKINEN ,  Johanna LILJA ,  Anita LUYTEN

IPC: C08F210/06 ,  B29B17/00 ,  B29C48/00 ,  B29C48/04 ,  B29C48/36 ,  B29C48/92 ,  B29D22/00 ,  B29C45/00

CPC classification number: C08F210/06 ,  B29B17/00 ,  B29C48/022 ,  B29C48/04 ,  B29K2105/26 ,  B29C48/92 ,  B29D22/003 ,  B29C45/0001 ,  B29C48/36

Abstract: The present invention provides a process for recycling propylene-ethylene copolymers to obtain polymers having good optical and mechanical properties, as well as good processability. The invention further provides propylene-ethylene copolymer pellets obtained from the process, articles comprising or consisting of such pellets and the use of the propylene-ethylene copolymer pellets for injection molding applications. The process comprising the steps of (a) polymerizing propylene and ethylene in the presence of a single site catalyst in a continuous polymerization reactor under dynamic conditions, (b) collecting the resulting propylene-ethylene copolymer powders from step (a) to obtain a mixture (M) of propylene-ethylene copolymer powders having a MFR2 (ISO 1133, 230° C., 2.16 kg) in a raffle of from 1.5 to 80.0 g/ 10 min and an ethylene content in a range of from 1.0 to 4.0 wt. % based on the total weight of the mixture (M), (c) compounding said mixture (M) in an extruder in the presence of a radical initiator, and a clarifying agent in an amount of from 0.01 to 1.0 wt. %, based on the total weight of the mixture of propylene-ethylene copolymer powders, and (d) extruding the above mixture into pellets; wherein, in step a), the dynamic conditions are such that the ethylene content and the melt flow rate (MFR2) of the resulting copolymer gradually changes from a first predetermined ethylene content, E1, to a second predetermined ethylene content, E2, and from a first predetermined melt flow rate, MFR2-1, to a second predetermined melt flow rate, MFR2-2; wherein collecting the copolymer powders in step b) is started when the polymer produced in step a) has a first ethylene content, E1, and a melt flow rate MFR2-1, and collecting the copolymer powders in step b) is stopped when the polymer produced in step a) has a second ethylene content, E2, and a melt flow rate MFR2-2; and wherein said pellets obtained in step d) have (i) a MFR2 (ISO 1133, 230° C., 2.16 kg) in the range of from 20 to 120 g/10 in, (ii) a ratio of MFR2 pellets/MFR2 powder>1, (iii) an ethylene content in a range of from 1.0 to 4.0 wt %, (iv) a crystallization temperature Tc, determined by DSC according to ISO 11357-3:1999 in the range of from 100 to 125° C., and (v) a flexural modulus, determined in a 3-point-bending according to ISO 178 on injection molded specimens of 80×10×4 mm, prepared in accordance with EN ISO 1873-2, of 850 MPa or more.

公开(公告)号：US20230279199A1

公开(公告)日：2023-09-07

申请号：US18017506

申请日：2021-07-23

Applicant: BOREALIS AG

Inventor： Konrad GEBAUER ,  Anna Maria HARTL ,  Jingbo WANG ,  Markus GAHLEITNER ,  Lionel DELAVIERE

IPC: C08K5/20 ,  C08K5/00 ,  C08K5/3417 ,  C08K3/34

CPC classification number: C08K5/20 ,  C08K5/0083 ,  C08K5/3417 ,  C08K3/34

Abstract: Polyethylene composition comprising a) at least 89.0 wt. % of a multimodal polyethylene polymer; b) optionally 0.01 to 10.0 wt.-% of a colour pigment or a colour masterbatch comprising a colour pigment; c) 0.01 to 1.0 wt.-% of a nucleating agent of formula (I) or a nucleating agent of formula (II) wherein A=mono- or bicyclic aryl group; each X is independently a —CO—NH— group or —NH—CO— group; R1 to R3 are each independently a C1-C20 alkyl optionally substituted by one or more hydroxyl groups; C2-C20 alkenyl optionally substituted by one or more hydroxyl groups; C2-C20 alkyl interrupted by oxygen or sulfur; C3-C12 cycloalkyl optionally substituted by one or more C1-C20 alkyl; C3-C12 cycloalkyl-C1-6-alkylene- wherein the C3-12 cyclokalkyl is optional substituted by one or more C1-C20 alkyl groups.

公开(公告)号：US20220363880A1

公开(公告)日：2022-11-17

申请号：US17765907

申请日：2020-09-30

Applicant: BOREALIS AG

Inventor： Jingbo WANG ,  Markus GAHLEITNER ,  Klaus BERNREITNER ,  Pauli LESKINEN

IPC: C08L23/14 ,  C08J5/18

Abstract: The present invention relates to a polymer composition comprising at least the following components: A) 70.0 to 95.0 wt.-% based on the overall weight of the polymer composition of a C2C3 random copolymer; whereby said C2C3 random copolymer has a melting point in the range of 110 to 140° C. determined by differential scanning calorimetry according to ISO 11357-3; a MFR2 (230° C., 2.16 kg) determined according to ISO 1133 in the range of 0.5 to 4.0 g/10 min; and a total C2-content in the range of 1 to 10 wt.-% based on the overall weight of the C2C3 random copolymer; B) 5.0 to 30.0 wt.-% based on the overall weight of the polymer composition of a LDPE; whereby said LDPE has a density determined according to ISO 1183 in the range of 915 to 922 kg/m3; and a MFR2 (190° C., 2.16 kg) determined according to ISO 1133 in the range of 0.9 to 20.0 g/10 min; with the proviso that the weight proportions of components A) and B) add up to 100 wt.-%. In addition, the present invention refers to the articles, preferably blown films made of said polymer composition

公开(公告)号：US20220145055A1

公开(公告)日：2022-05-12

申请号：US17583615

申请日：2022-01-25

Applicant: BOREALIS AG

Inventor： Jingbo WANG ,  Markus GAHLEITNER ,  Elisabeth POTTER ,  Jani AHO ,  Klaus BERNREITNER ,  Luc MONNISSEN ,  Meta CIGON

IPC: C08L23/14 ,  C08F10/06

Abstract: The invention relates to a process for producing a polypropylene composition by sequential polymerization the polypropylene composition having an improved balanced combination of high flowability, high stiffness and impact, and high level of optical properties.

公开(公告)号：US20220135779A1

公开(公告)日：2022-05-05

申请号：US17273687

申请日：2019-08-07

Applicant: BOREALIS AG

Inventor： Jingbo WANG ,  Markus GAHLEITNER ,  Klaus BERNREITNER ,  Peter NIEDERSÜSS ,  Pauli LESKINEN

IPC: C08L23/12 ,  C08L23/20 ,  C08L23/08 ,  C08F4/6592 ,  C08L23/14 ,  B29C48/40 ,  B29C48/00 ,  B29C48/08

Abstract: The present invention is directed to a polypropylene composition (P) comprising a copolymer (C) of propylene and 1-hexene comprising a first random propylene copolymer (A) of propylene and a 1-hexene, and a second random propylene copolymer (B) of propylene and 1-hexene having a higher 1-hexene content than the first random propylene copolymer (A) as well as a plastomer (PL) being an elastomeric copolymer of ethylene and at least one C4 to C10 α-olefin. Further, the present invention is directed to an article comprising said polypropylene composition (P) and the use of said polypropylene composition (P) as a sealing layer in a multi-layer film.

公开(公告)号：US20220073718A1

公开(公告)日：2022-03-10

申请号：US17423407

申请日：2020-01-15

Applicant: BOREALIS AG

Inventor： Jingbo WANG ,  Markus GAHLEITNER ,  Friedrich BERGER ,  Karlheinz FRIEDRICH

IPC: C08L23/14 ,  C08F2/00 ,  C08F210/02 ,  C08F210/14 ,  C08F4/646 ,  C08F4/649 ,  C08F4/654 ,  B29C49/04

Abstract: The present invention is directed to a propylene polymer composition comprising at least one propylene copolymer (C-PP), and an α-nucleating agent (NU), wherein the propylene copolymer (C-PP) comprises two propylene copolymer fractions (PP1) and (PP2), wherein propylene copolymer fraction (PP1) is contained in the propylene copolymer (C-PP) in an amount of 30 to 70 wt. % and the propylene copolymer fraction (PP2) is contained in the propylene copolymer (C-PP) in an amount of 70 to 30 wt. %, the comonomer content of propylene copolymer fraction (PP1) is in the range of 0.5 to 2.5 wt.-% and the comonomer content of the propylene copolymer fraction (PP1) is lower compared to the comonomer content of the propylene copolymer fraction (PP2), and the propylene polymer composition has (a) a melt flow rate MFR2 (230° C.) measured according to according to ISO 1133 of 1 to 5 g/10 min., and (b) a comonomer content of 4.0 to 8.0 wt. %, the comonomer(s) being ethylene and/or at least one C4 to C12 α-olefin. The above propylene polymer composition has improved impact and optical properties. The invention further provides a method of producing the above propylene polymer composition and an extrusion blow molded article comprising the above propylene polymer composition.