EP 3887411 A1 20211006 - POLYMER COMPOSITION AND PROCESS FOR MAKING THE SAME
Title (en)
POLYMER COMPOSITION AND PROCESS FOR MAKING THE SAME
Title (de)
POLYMERZUSAMMENSETZUNG UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
COMPOSITION POLYMÈRE ET SON PROCÉDÉ DE PRÉPARATION
Publication
Application
Priority
- EP 18209274 A 20181129
- EP 2019083098 W 20191129
Abstract (en)
[origin: WO2020109556A1] The present invention relates to a polymer composition, especially for pipe, and a process for making the composition. This process for making a polymer composition for pipe comprises polymerizing ethylene in at least two slurry reactors and at least one gas phase reactor connected in series, whereby the polyethylene composition comprises a) an ethylene copolymer as fraction (A), and b) an ethylene homo- or copolymer as fraction (B), with fraction (A) having a lower molecular weight than fraction (B), wherein a single-site catalyst (SSC) is used in the polymerisation of at least one of fractions (A) and/or (B), the composition having (i) a density of between 932 and 955 kg/m3, and (ii) a MFR5 (at 190°C / 5.00 kg) of between 0.5 and 3.5 g/10 min, wherein fraction (A) comprises two fractions (A1) and (A"), whereby fraction (A1) is produced in a first slurry loop reactor and fraction (A") is produced in a second loop reactor.
IPC 8 full level
C08F 210/16 (2006.01); C08F 2/00 (2006.01); C08F 4/6592 (2006.01); C08F 210/08 (2006.01); C08F 210/14 (2006.01); C08L 23/08 (2006.01)
CPC (source: EP)
C08L 23/08 (2013.01); C08F 4/65912 (2013.01); C08F 4/65916 (2013.01); C08F 210/16 (2013.01); C08L 2203/18 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01); C08L 2314/06 (2013.01)
C-Set (source: EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 2019083098 W 20191129; EP 19808846 A 20191129