公开(公告)号：US20240043666A1

公开(公告)日：2024-02-08

申请号：US18227011

申请日：2023-07-27

申请人： Equistar Chemicals, LP

发明人： Sameer D. Mehta ,  Harilaos Mavridis

IPC分类号： C08L23/06

CPC分类号： C08L23/06 ,  C08L2207/062 ,  C08L2205/025 ,  C08L2207/20 ,  C08L2201/08

摘要： Compositions comprising a blend of a first HDPE component having a relatively higher density and lower molecular weight and a second HDPE component, having a relatively lower higher density and higher molecular weight, are provided. The blends demonstrate improved ESCR performance relative to currently available HDPE products at a given density.

公开(公告)号：US20140377577A1

公开(公告)日：2014-12-25

申请号：US14062419

申请日：2013-10-24

申请人： Equistar Chemicals, LP

发明人： Chun D. Lee ,  Harilaos Mavridis ,  Mick C. Hundley

IPC分类号： H01B3/44 ,  G02B6/44 ,  C08L23/06

CPC分类号： H01B3/441 ,  C08L23/0815 ,  C08L2203/202 ,  C08L2314/06 ,  G02B6/443 ,  Y10T428/31938 ,  C08L23/06

摘要： Disclosed herein are blended polymer compositions having a polyethylene first resin and a mLLDPE resin. The polyethylene first resin have a density of at least 0.926 g/cm3; and the mLLDPE resin has a density of between about 0.910 to about 0.925 g/cm3 and a melt index ranging from about 0.05 to about 5. The amount of the mLLDPE is less than about 20 weight percent based on the weight of the polyethylene first resin and mLLDPE resin; and the mLLDPE resin has a narrower molecular weight distribution than the polyethylene first resin.

摘要翻译： 本文公开了具有聚乙烯第一树脂和mLLDPE树脂的共混聚合物组合物。 聚乙烯第一树脂的密度至少为0.926g / cm3; 并且mLLDPE树脂具有约0.910至约0.925g / cm 3的密度和约0.05至约5的熔体指数。基于聚乙烯第一树脂的重量，mLLDPE的量小于约20重量％ 和mLLDPE树脂; 并且mLLDPE树脂具有比聚乙烯第一树脂更窄的分子量分布。

公开(公告)号：US08679603B1

公开(公告)日：2014-03-25

申请号：US13724684

申请日：2012-12-21

申请人： Equistar Chemicals, LP

发明人： Harilaos Mavridis ,  Thomas J. Schwab

IPC分类号： B29C65/00

CPC分类号： C08L23/04 ,  C08F10/02 ,  C08J5/18 ,  C08J2323/08 ,  C08J2423/06 ,  C08K3/34 ,  C08L23/06 ,  C08L23/0815 ,  C08L2203/16 ,  C08L2207/062 ,  C08L2207/066 ,  Y10T428/1345 ,  C08L23/08

摘要： An article that is made of a film a film having a narrow angle scattering (NAS) of greater than 40, a drop dart impact of greater than 100 grams, and a blocking of less than 40 g/16 in2. In particular, the film in made of a blend of: (a) a LDPE, (b) a LLDPE produced with a single-site catalyst; and (c) one or more anti-block additives.

摘要翻译： 由薄膜制成的具有大于40的窄角度散射（NAS），大于100克的落镖冲击和小于40g / 16in2的阻挡物的薄膜制品。 特别地，由以下混合物制成的薄膜：（a）LDPE，（b）用单中心催化剂制备的LLDPE; 和（c）一种或多种防块添加剂。

公开(公告)号：US10654956B2

公开(公告)日：2020-05-19

申请号：US15962522

申请日：2018-04-25

申请人： EQUISTAR CHEMICALS, LP

发明人： Harilaos Mavridis ,  Roberta Pica ,  Pietro Baita ,  Gabriele Mei ,  Massimo Covezzi

IPC分类号： C08F210/16 ,  C08F4/22 ,  C08F4/648 ,  C08F4/02 ,  C08F4/642

摘要： The present disclosure generally relates to ethylene alpha-olefin copolymers and methods of making ethylene alpha-olefin copolymers. The ethylene alpha-olefin copolymers may have a density of about 0.915 g/mL to about 0.918 g/mL, a rheological polydispersity index greater than 0.8, a melt index of about 0.4 dg/10 min to about 2.0 dg/10 min, and/or a CEF T50 of 84° C. or less. The ethylene alpha-olefin copolymers may be made by combining an ethylene monomer and one or more alpha-olefin monomers in the presence of a catalyst, such as a Ziegler-Natta catalyst.

公开(公告)号：US20140243475A1

公开(公告)日：2014-08-28

申请号：US14191090

申请日：2014-02-26

申请人： Basell Polyolefine GmbH ,  Equistar Chemicals, LP

发明人： Harilaos Mavridis ,  Gerhardus Meier ,  Ulf Schueller ,  Diana Doetsch ,  Bernd Marczinke ,  Iakovos Vittorias

IPC分类号： C08L23/06 ,  C08L23/08

CPC分类号： C08L23/06 ,  C08L23/08 ,  C08L23/0815 ,  C08L2205/025 ,  C08L2308/00 ,  C08L2314/02 ,  Y02P20/52 ,  Y10S526/905 ,  C08F210/16 ,  C08F2/001 ,  C08F110/02 ,  C08F2500/12 ,  C08F2500/07 ,  C08F210/14 ,  C08F2500/05 ,  C08F2500/14 ,  C08F2500/17 ,  C08F2500/09 ,  C08F2/34 ,  C08F10/02 ,  C08F4/6543 ,  C08F4/6492

摘要： Embodiments of the present disclosure relate to a method of preparing polyethylene compositions comprising polymerizing ethylene in a first gas-phase reactor and polymerizing ethylene in a second gas-phase reactor in the presence of hydrogen; wherein at least one of the first or second gas-phase reactors comprises a first and second polymerization zone; wherein a hydrogen pressure of the first and second polymerization zones are different such that at least a portion of the second ethylene cycles through the first and second polymerization zones and a gas mixture of each polymerization zone is partially or totally prevented from entering the other zone.

摘要翻译： 本公开的实施方案涉及制备聚乙烯组合物的方法，其包括在第一气相反应器中聚合乙烯并在第二气相反应器中在氢的存在下聚合乙烯; 其中所述第一或第二气相反应器中的至少一个包括第一和第二聚合区; 其中第一和第二聚合区的氢气压力是不同的，使得至少一部分第二乙烯循环通过第一和第二聚合区以及每个聚合区的气体混合物被部分或完全防止进入另一个区。

公开(公告)号：US20180030252A1

公开(公告)日：2018-02-01

申请号：US15400562

申请日：2017-01-06

申请人： Equistar Chemicals, LP

发明人： Harilaos Mavridis ,  Chun D. Lee ,  Steven W. Horwatt ,  Sameer D. Mehta

IPC分类号： C08L23/06 ,  B29C47/00 ,  F16L9/127 ,  C08L23/14

CPC分类号： C08L23/06 ,  B29C48/022 ,  B29C48/09 ,  B29K2023/065 ,  B29K2023/0675 ,  B29K2023/0691 ,  B29L2023/22 ,  C08L23/14 ,  C08L2203/18 ,  C08L2205/02 ,  C08L2205/025 ,  C08L2207/062 ,  F16L9/12 ,  F16L9/127 ,  C08K5/14

摘要： The present disclosure relates to pipes comprising bimodal high molecular weight high density polyethylene which has been extruded in the presence of one or more organic peroxides that are present in an amount ranging from 30 ppm to 200 ppm. The pipe has an improved long-term hydrostatic strength. Also provided are methods for preparing pipes having these characteristics.