Invention Grant
- Patent Title: Pipe comprising a metallocene-catalyzed polyethylene resin
-
Application No.: US15305683Application Date: 2015-04-23
-
Publication No.: US09932427B2Publication Date: 2018-04-03
- Inventor: Olivier Lhost , Jacques Michel
- Applicant: Total Research & Technology Feluy
- Applicant Address: BE Seneffe (Feluy)
- Assignee: Total Research & Technology Feluy
- Current Assignee: Total Research & Technology Feluy
- Current Assignee Address: BE Seneffe (Feluy)
- Agent Albert Shung
- Priority: EP14165701 20140423
- International Application: PCT/EP2015/058824 WO 20150423
- International Announcement: WO2015/162212 WO 20151029
- Main IPC: C08F10/02
- IPC: C08F10/02 ; C08L23/06 ; C08F210/16 ; F16L9/127 ; C08F210/02 ; C08F110/02

Abstract:
The invention relates to a pipe comprising at least one metallocene-catalyzed polyethylene resin, wherein the polyethylene resin has a multimodal molecular weight distribution and comprises at least two metallocene-catalyzed polyethylene fractions A and B, wherein fractions A and B are prepared in different reactors of at least two reactors connected in series, wherein the polyethylene resin comprises:at least 30% by weight and at most 50% by weight of the polyethylene fraction A, based on the total weight of the polyethylene resin, wherein fraction A has a melt index MI2 of at least 50 g/10 min as determined on the fluff of fraction A according to ISO 1133:1997 condition D at a temperature of 190° C. and under a load of 2.16 kg; wherein fraction B has a density of at most 0.9210 g/cm3; and wherein the polyethylene resin has a melt index MI5 of at least 0.10 g/10 min and of at most 1.0 g/10 min as determined according to ISO 1133:1997, condition T, at 190° C. and under a load of 5 kg; wherein the polyethylene resin has an HLMI of at least 4.0 g/10 min and at most 14.0 g/10 min, as measured according to the procedure of ISO 1133:1997 condition G with a temperature of 190° C. and a load of 21.6 kg; and a density of at least 0.9420 g/cm3 and of at most 0.9460 g/cm3 as determined according to the procedure of ASTM D-1505 at a temperature of 23° C.
Public/Granted literature
- US20170058063A1 Pipe Comprising a Metallocene-Catalyzed Polyethylene Resin Public/Granted day:2017-03-02
Information query