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.