公开(公告)号：US20240110032A1

公开(公告)日：2024-04-04

申请号：US18285278

申请日：2022-04-13

Applicant: Borealis AG

Inventor： Mohammad Al-haj Ali ,  Henry Sleijster ,  Tom Deboel ,  Lukas Sobczak

IPC: C08J11/08 ,  B29B17/02

CPC classification number: C08J11/08 ,  B29B17/02 ,  B29B2017/0293 ,  B29K2023/00 ,  C08J2323/00

Abstract: A dissolution apparatus for dissolving from a waste polyolefin material a polyolefin in a solvent yielding a polyolefin solution slurry), the polyolefin solution slurry comprising a polyolefin solution and undissolved residues, for a continuous polyolefin recycling process, the dissolution apparatus comprising at least one feeding device selected from a list consisting of a dry feeding device, a wet feeding device, a melt feeding device, and a solution feeding device, at least one dissolution device, wherein the at least one dissolution device has at least one first inlet for introducing the waste polyolefin material fluidly connected to an outlet of the at least one feeding device, and wherein the at least one dissolution device has at least one second inlet for introducing the solvent, and wherein the at least one dissolution device has at least one outlet for withdrawing the polyolefin solution slurry, and wherein the dissolution device comprises a vessel comprising a stirrer.

公开(公告)号：US20230038231A1

公开(公告)日：2023-02-09

申请号：US17792819

申请日：2021-01-08

Applicant: BOREALIS AG

Inventor： Kenneth Johansson ,  Tom Deboel

IPC: C08F2/00 ,  C08F2/34 ,  C08F10/02

Abstract: The present invention relates to a process for reducing low molecular weight oligomers and wax build-up in one or more recycle coolers in a high pressure polymerization process by means of a gas stream, which is heated and/or free of wax, introduced into the one or more recycle coolers and the use of a heated gas stream for removing low molecular weight oligomers and wax build-up in one or more recycle coolers in a high pressure polymerization process.