公开(公告)号：US20190023883A1

公开(公告)日：2019-01-24

申请号：US16066895

申请日：2017-02-22

Applicant: Dow Global Technologies LLC

Inventor： Jian Wang ,  Mridula Kapur ,  Mehmet Demirors ,  Douglas S. Ginger ,  Philip P. Fontaine ,  Amaia Bastero ,  David Lopez

IPC: C08L23/08 ,  C08F210/16

Abstract: An ethylene/alpha-olefin copolymer composition having a density from 0.935 to 0.955 g/cc; a ratio of weight average molecular weight to number average molecular weight, Mw/Mn, of from 3 to 10; a z-average molecular weight, Mz, from 200 kg/mol to 500 kg/mol; and a PENT value of greater than 500 hours at 80° C. and 2.4 MPa; wherein when the composition is formed into a monolayer pipe the pipe has a pipe hydrostatic strength of greater than 100 hours at 20° C. and 12.0 MPa. Also provided is a pipe or pipe fitting comprising the ethylene/alpha-olefin copolymer composition.

公开(公告)号：US10696828B2

公开(公告)日：2020-06-30

申请号：US16066895

申请日：2017-02-22

Applicant: Dow Global Technologies LLC

Inventor： Jian Wang ,  Mridula Kapur ,  Mehmet Demirors ,  Douglas S. Ginger ,  Philip P. Fontaine ,  Amaia Bastero ,  David Lopez

IPC: C08L23/08 ,  C08F210/16

Abstract: An ethylene/alpha-olefin copolymer composition having a density from 0.935 to 0.955 g/cc; a ratio of weight average molecular weight to number average molecular weight, Mw/Mn, of from 3 to 10; a z-average molecular weight, Mz, from 200 kg/mol to 500 kg/mol; and a PENT value of greater than 500 hours at 80° C. and 2.4 MPa; wherein when the composition is formed into a monolayer pipe the pipe has a pipe hydrostatic strength of greater than 100 hours at 20° C. and 12.0 MPa. Also provided is a pipe or pipe fitting comprising the ethylene/alpha-olefin copolymer composition.

公开(公告)号：US09884929B2

公开(公告)日：2018-02-06

申请号：US14888018

申请日：2014-04-29

Applicant: Dow Global Technologies LLC

Inventor： Jian Wang ,  Mehmet Demirors ,  Amaia Bastero

IPC: C08F8/00 ,  C08F210/16 ,  C08L23/08 ,  F16L9/12 ,  C08K5/101 ,  C08K5/13 ,  C08K5/134 ,  C08K5/24 ,  C08K5/52 ,  C08F4/659 ,  C08F4/6592

CPC classification number: C08F210/16 ,  C08F4/65908 ,  C08F4/65912 ,  C08F4/6592 ,  C08F2420/02 ,  C08K5/101 ,  C08K5/13 ,  C08K5/134 ,  C08K5/24 ,  C08K5/52 ,  C08L23/08 ,  C08L23/0815 ,  C08L2203/18 ,  C08L2205/025 ,  F16L9/12 ,  C08F210/14 ,  C08F2500/11 ,  C08F2500/12 ,  C08F2500/02 ,  C08F2500/03 ,  C08F2500/17 ,  C08F2/001 ,  C08F4/642 ,  C08F4/65904

Abstract: An ethylene/alpha-olefin interpolymer composition suitable for pipe applications prepared via solution polymerization process, and pipes made therefrom. The ethylene/alpha-olefin interpolymer composition suitable for pipe applications according to the present invention comprises greater than 80 percent by weight of units derived from ethylene and 20 percent or less by weight of units derived from one or more alpha olefin co-monomers, wherein said ethylene/alpha-olefin interpolymer has a density in the range of from 0.925 to 0.935 g/cm3, a melt index I2 in the range of from 0.3 to 1.0 g/10 minutes, a melt flow ratio I10/I2 in the range of from 7.9 to 11, a melt strength in the range of from 3 to 10 cN, a DSC heat curve having a melting peak temperature in the range of from 120 to 130° C., a crystallinity in the range of from 50 to 70 percent, a 1% flexural modulus in the range from 350 to 600 MPa, and a zero shear viscosity ratio (ZSVR) in the range of from 2 to 10.

公开(公告)号：US20160060373A1

公开(公告)日：2016-03-03

申请号：US14888018

申请日：2014-04-29

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Jian Wang ,  Mehmet Demirors ,  Amaia Bastero

IPC: C08F210/16 ,  C08K5/24 ,  C08K5/134 ,  C08K5/13 ,  C08K5/101 ,  C08K5/52

CPC classification number: C08F210/16 ,  C08F4/65908 ,  C08F4/65912 ,  C08F4/6592 ,  C08F2420/02 ,  C08K5/101 ,  C08K5/13 ,  C08K5/134 ,  C08K5/24 ,  C08K5/52 ,  C08L23/08 ,  C08L23/0815 ,  C08L2203/18 ,  C08L2205/025 ,  F16L9/12 ,  C08F210/14 ,  C08F2500/11 ,  C08F2500/12 ,  C08F2500/02 ,  C08F2500/03 ,  C08F2500/17 ,  C08F2/001 ,  C08F4/642 ,  C08F4/65904

Abstract: An ethylene/alpha-olefin interpolymer composition suitable for pipe applications prepared via solution polymerization process, and pipes made therefrom. The ethylene/alpha-olefin interpolymer composition suitable for pipe applications according to the present invention comprises greater than 80 percent by weight of units derived from ethylene and 20 percent or less by weight of units derived from one or more alpha olefin co-monomers, wherein said ethylene/alpha-olefin interpolymer has a density in the range of from 0.925 to 0.935 g/cm3, a melt index I2 in the range of from 0.3 to 1.0 g/10 minutes, a melt flow ratio I10/I2 in the range of from 7.9 to 11, a melt strength in the range of from 3 to 10 cN, a DSC heat curve having a melting peak temperature in the range of from 120 to 130° C., a crystallinity in the range of from 50 to 70 percent, a 1% flexural modulus in the range from 350 to 600 MPa, and a zero shear viscosity ratio (ZSVR) in the range of from 2 to 10.

Abstract translation: 适用于通过溶液聚合法制备的管道应用的乙烯/α-烯烃互聚物组合物，以及由其制成的管材。 适用于根据本发明的管道应用的乙烯/α-烯烃互聚物组合物包含大于80重量％的衍生自乙烯的单元和20重量％或更少的衍生自一种或多种α-烯烃共聚单体的单元，其中 所述乙烯/α-烯烃互聚物的密度范围为0.925-0.935g / cm3，熔体指数I2在0.3-1.0g / 10分钟范围内，熔体流动比I10 / I2在 7.9至11，熔体强度范围为3至10cN，DSC热曲线的熔融峰温度为120-130℃，结晶度为50-70％ ，350至600MPa范围内的1％挠曲模量和2至10范围内的零剪切粘度比（ZSVR）。