公开(公告)号：US20180179366A1

公开(公告)日：2018-06-28

申请号：US15576331

申请日：2016-04-29

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Priya Garg ,  Nicolaas Hendrika Friederichs ,  Tom Schoffelen

IPC: C08L23/06 ,  C08L23/08

CPC classification number: C08L23/06 ,  C08L23/0815 ,  C08L2203/18 ,  C08L2205/02 ,  C08L2205/025 ,  C08L2207/062 ,  C08L2314/02 ,  F16L9/12 ,  C08F210/16 ,  C08F2/001 ,  C08F4/6555 ,  C08F2/14 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/07 ,  C08F2500/19 ,  C08F2500/17 ,  C08F2500/05 ,  C08F110/02

Abstract: The invention is directed to a multimodal polyethylene having a flow ratio FRR ranging between ≥25 and ≤35, a density ranging between ≥948.0 kg/m3 and ≤953.0 kg/m3, an MFR190/5 ranging between ≥ 0.1 and ≤0.4 g/10 min and comprising from 50-54% by weight of an ethylene homopolymer A and from 46-50% by weight of an ethylene-hexene copolymer B, where all percentages are based on the total weight of the composition and wherein ethylene homopolymer A has a viscosity number ≥110 cm3/g and ≤130 cm3/g and a density between ≥960.0 kg/m3 and ≤969.0 kg/m3. The polyethylene is suitable to be applied in the production of pipes.

公开(公告)号：US20180208749A1

公开(公告)日：2018-07-26

申请号：US15743854

申请日：2016-06-30

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Priya Garg ,  Nicolaas Hendrika Friederichs ,  Tom Schoffelen

IPC: C08L23/06 ,  C08L23/08 ,  C08L23/20 ,  F16L9/12

Abstract: The invention is directed to bimodal polyethylene having a flow ratio FRR ranging between ≥30 and ≤40, a density ranging between ≥949.0 and ≤952.0 kg/m3, an MFR190/5 ranging between ≥0.1 and ≤0.2 g/10 min and comprising from 50 to 54% by weight of an ethylene homopolymer A and from 46-50% by weight of an ethylene-butene copolymer B, where all percentages are based on the total weight of the composition and wherein ethylene homopolymer A has a viscosity number ≥70 and ≤100 cm3/g and a density between ≥968 and ≤972 kg/m3. The polyethylene is suitable to be applied in the production of pipes.

公开(公告)号：US10696826B2

公开(公告)日：2020-06-30

申请号：US15743854

申请日：2016-06-30

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Priya Garg ,  Nicolaas Hendrika Friederichs ,  Tom Schoffelen

IPC: C08F210/16 ,  C08F4/655 ,  C08L23/06 ,  F16L9/12 ,  C08L23/08 ,  C08L23/20

Abstract: The invention is directed to bimodal polyethylene having a flow ratio FRR ranging between ≥30 and ≤40, a density ranging between ≥949.0 and ≤952.0 kg/m3, an MFR190/5 ranging between ≥0.1 and ≤0.2 g/10 min and comprising from 50 to 54% by weight of an ethylene homopolymer A and from 46-50% by weight of an ethylene-butene copolymer B, where all percentages are based on the total weight of the composition and wherein ethylene homopolymer A has a viscosity number ≥70 and ≤100 cm3/g and a density between ≥968 and ≤972 kg/m3. The polyethylene is suitable to be applied in the production of pipes.

公开(公告)号：US10435548B2

公开(公告)日：2019-10-08

申请号：US15576331

申请日：2016-04-29

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Priya Garg ,  Nicolaas Hendrika Friederichs ,  Tom Schoffelen

IPC: C08L23/06 ,  F16L9/12 ,  C08L23/08

Abstract: The invention is directed to a multimodal polyethylene having a flow ratio FRR ranging between ≥25 and ≤35, a density ranging between ≥948.0 kg/m3 and ≤953.0 kg/m3, an MFR190/5 ranging between ≥0.1 and ≤0.4 g/10 min and comprising from 50-54% by weight of an ethylene homopolymer A and from 46-50% by weight of an ethylene-hexene copolymer B, where ah percentages are based on the total weight of the composition and wherein ethylene homopolymer A has a viscosity number ≥110 cm3/g and ≤130 cm3/g and a density between ≥960.0 kg/m3 and ≤969.0 kg/m3. The polyethylene is suitable to be applied in the production of pipes.

公开(公告)号：US09994654B2

公开(公告)日：2018-06-12

申请号：US15512677

申请日：2015-09-03

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Nicolaas Hendrika Friederichs ,  Mark Vlaar ,  Tom Schoffelen ,  Matthijs Van Kessel

IPC: C08F110/02

CPC classification number: C08F110/02 ,  C08F4/6565 ,  C08F4/6567 ,  C08F4/6494 ,  C08F2500/01 ,  C08F2500/11 ,  C08F2500/18 ,  C08F2500/24

Abstract: The invention relates to a continuous process for the production of ultra-high molecular weight polyethylene with an Elongational Stress of at least 0.43 N/mm2. The polymerization of ethylene takes place in the presence of a catalyst and hydrogen. It is an advantage of the process according to the invention that the use of small amounts of hydrogen during the production of UHMWPE reduces reactor fouling. Furthermore, the process according to the invention results in longer run times in polymerization reactors, less cleaning cycles to remove reactor fouling and in less need for other anti-fouling agents or anti-static agents.

公开(公告)号：US20170283528A1

公开(公告)日：2017-10-05

申请号：US15512677

申请日：2015-09-03

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Nicolaas Hendrika Friederichs ,  Mark Vlaar ,  Tom Schoffelen ,  Matthijs Van Kessel

IPC: C08F110/02

CPC classification number: C08F110/02 ,  C08F4/6565 ,  C08F4/6567 ,  C08F4/6494 ,  C08F2500/01 ,  C08F2500/11 ,  C08F2500/18 ,  C08F2500/24

Abstract: The invention relates to a continuous process for the production of ultra-high molecular weight polyethylene with an Elongational Stress of at least 0.43 N/mm2. The polymerisation of ethylene takes place in the presence of a catalyst and hydrogen. It is an advantage of the process according to the invention that the use of small amounts of hydrogen during the production of UHM-WPE reduces reactor fouling. Furthermore, the process according to the invention results in longer run times in polymerization reactors, less cleaning cycles to remove reactor fouling and in less need for other anti-fouling agents or anti-static agents.