公开(公告)号：US20170152376A1

公开(公告)日：2017-06-01

申请号：US15323915

申请日：2015-07-06

Applicant: BOREALIS AG

Inventor： Yi LIU ,  Alexandra Romina ALBUNIA ,  Tanja PIEL ,  Qizheng DOU ,  Hermann PROKSCHI

IPC: C08L23/06 ,  B29C47/88 ,  B29C47/00 ,  C08F110/02

CPC classification number: C08L23/06 ,  B29C47/0004 ,  B29C47/0023 ,  B29C47/882 ,  B29K2023/065 ,  B29K2023/0683 ,  B29L2023/22 ,  C08F110/02 ,  C08F2500/05 ,  C08F2500/07 ,  C08F2500/11 ,  C08F2500/17 ,  C08L23/0815 ,  C08L2203/18 ,  C08L2205/025 ,  C08L2207/068 ,  C08L2207/07 ,  C08L2308/00

Abstract: The present invention relates to a multimodal polyethylene composition which can be manufactured into pipes showing improved pressure resistance comprising a high density multimodal ethylene polymer component (A) having a density of at least 930 kg/m3, and a MFR21 of not more than 15 g/10 min, wherein said composition exhibits a LAOS-NLF defined as L   A   O   S - N   L   F =  G 1 ′ G 3 ′  where G1′—first order Fourier Coefficient G3′—third order Fourier Coefficient of at least 1.7. Such a polyethylene composition is useful for the manufacture of pressure pipes that exhibit improved pressure resistance and creep resistance and do not undergo sagging. Further disclosed is a process for the production of a pipe using such a multimodal polyethylene composition and a pipe comprising such a multimodal polyethylene composition.

公开(公告)号：US20220325017A1

公开(公告)日：2022-10-13

申请号：US17640445

申请日：2020-09-02

Applicant: BOREALIS AG

Inventor： Jari-Jussi RUSKEENIEMI ,  Jeroen ODERKERK ,  Juha HARTIKAINEN ,  Tanja PIEL ,  Daniela MILEVA ,  Oscar PRIETO ,  Stefan HELLSTROEM

IPC: C08F210/02 ,  C08L23/08 ,  C08L51/06 ,  C08F230/08 ,  C08K5/14 ,  C08K5/5419 ,  C08K5/134 ,  C08J3/24

Abstract: The present invention refers to a method for improving the storage stability and/or transport stability of polymer (A) comprising the following steps: a) providing polymer (A) selected from the group consisting of copolymers of ethylene and a C4C12 alpha olefin comonomer, copolymers of propylene and mixtures thereof containing additionally comonomer units comprising hydrolysable silane groups; b) providing a stabilizer (B) selected from the group consisting of sterically hindered phenols, alkyltri-alkoxysilanes, alkenyltrialkoxysilanes and mixtures thereof; c) mixing polymer (A) and stabilizer (B) to obtain a stabilized polymer composition (I); and d) transferring the stabilized polymer composition (I) obtained in step c) in a container comprising at least one barrier layer. In addition, the present invention relates to the use of stabilizer (B) for improving the storage stability and/or transport stability of polymer (A) stored and/or transported in a container having a barrier layer.

公开(公告)号：US20130197136A1

公开(公告)日：2013-08-01

申请号：US13798809

申请日：2013-03-13

Applicant: BOREALIS AG

Inventor： Per-Ola HAGSTRAND ,  Martin ANKER ,  Tanja PIEL ,  Svein JAMTVEDT

IPC: C08K5/1545 ,  C08K5/527 ,  C08K5/13

CPC classification number: C08K5/1545 ,  C08K5/005 ,  C08K5/13 ,  C08K5/527 ,  F16L9/127 ,  Y10T137/0318 ,  Y10T428/139 ,  C08L23/02

Abstract: The present invention relates to a polyolefin composition with increased resistance to degradation caused by ClO2-containing water and to a pipe made of such a polyolefin composition. The present invention further relates to the use of the polyolefin composition for the production of a pipe and to the use of a combination of particular types of antioxidants for increasing the resistance of the polyolefin composition against degradation caused by contact with ClO2-containing water.

Abstract translation: 本发明涉及由含ClO 2的水引起的对劣化的耐受性提高的聚烯烃组合物和由这种聚烯烃组合物制成的管。 本发明还涉及聚烯烃组合物用于生产管道的用途，以及使用特定类型的抗氧化剂的组合来增加聚烯烃组合物对与含ClO 2的水接触引起的降解的阻力。

公开(公告)号：US20220315716A1

公开(公告)日：2022-10-06

申请号：US17276275

申请日：2019-09-26

Applicant: BOREALIS AG

Inventor： Oscar PRIETO ,  Jeroen ODERKERK ,  Jari-Jussi RUSKEENIEMI ,  Stefan HELLSTRÖM ,  Tanja PIEL ,  Daniela MILEVA

IPC: C08J3/24 ,  C08L23/08 ,  C08L51/06 ,  B29B9/12

Abstract: The present invention discloses a process for providing a cross-linked composition, the process comprising the steps of (a) providing an ethylene-α-olefin plastomer having—a density of from 850 kg/m3 to 900 kg/m3; and—an melt flow rate (ISO 1133, 2.16 kg, 190° C.) of 0.3 to 50 g/10 min; (b) grafting the ethylene-α-olefin plastomer with silane crosslinker such that the content of silane crosslinker is in the range of 0.1 to 10.0 wt.-% with respect to the grafted ethylene-α-olefin plastomer; (c) contacting said grafted ethylene-α-olefin plastomer with 2 to 8 wt.-% of a tin-free silane crosslinking catalyst with respect to the resulting mixture of grafted ethylene-α-olefin plastomer and tin-freesilane crosslinking catalyst, wherein said tin-free catalyst comprises a Brönsted acid at 23° C. and 50% relative humidity for at least 15 minutes thus forming a cross-linked composition, wherein gel content of said cross-linked composition after 15 min is at least 60%.

公开(公告)号：US20210324189A1

公开(公告)日：2021-10-21

申请号：US17276322

申请日：2019-09-26

Applicant: BOREALIS AG

Inventor： Oscar PRIETO ,  Jeroen ODERKERK ,  Jari-Jussi RUSKEENIEMI ,  Stefan HELLSTRÖM ,  Tanja PIEL ,  Daniela MILEVA

IPC: C08L51/06 ,  C08L23/08 ,  C08J3/24

Abstract: The present invention relates to silane crosslinking catalyst comprising: —75 to 85 wt.-% of an olefin acrylate interpolymer and—15 to 25 wt.-% of a hindered amine light stabilizer (HALS) having a number average molecular weight Mn of 1500 to 4000 g/mol; and—optionally up to 5 wt.-% wax, wherein the silane crosslinking catalyst is free of tin, carboxylic acid(s) and sulphonic acid(s), all weight percentages with respect to the total weight of the silane crosslinking catalyst.