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公开(公告)号：US09340631B2
公开(公告)日：2016-05-17
申请号：US14417530
申请日：2013-07-24
IPC分类号： C08F4/02 , C08F4/6592 , C08F210/16 , C08L23/08 , C08F110/02 , C08L23/06 , C08F4/659
CPC分类号： C08F110/02 , C08F4/02 , C08F4/65912 , C08F4/65916 , C08F210/16 , C08L23/06 , C08L23/0815 , C08F10/02 , C08F4/65927 , C08F4/025 , C08F2/001 , C08F210/14 , C08F2500/05 , C08F2500/07 , C08F2500/12 , C08F2500/26
摘要： A process for preparing a polyethylene resin having a multimodal molecular weight distribution in at least two loop slurry reactors connected in series can include polymerizing ethylene in the presence of at least one supported metallocene catalyst, a diluent, optionally one or more co-monomers, and optionally hydrogen, thereby obtaining the polyethylene resin. The supported metallocene catalyst can have a particle size distribution of a span value lower than 2.5 and a D50 value within the range of from 5 μm to 20 μm.
摘要翻译： 在至少两个串联连接的循环淤浆反应器中制备具有多峰分子量分布的聚乙烯树脂的方法可以包括在至少一种负载的茂金属催化剂，稀释剂，任选的一种或多种共聚单体的存在下聚合乙烯，以及 任选地氢，由此得到聚乙烯树脂。 负载型茂金属催化剂可以具有跨度值低于2.5的粒度分布和在5μm至20μm范围内的D50值。
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公开(公告)号：US20150315304A1
公开(公告)日：2015-11-05
申请号：US14708748
申请日：2015-05-11
CPC分类号： C08F10/14 , C08F4/025 , C08F4/63922 , C08F4/65927 , C08F10/00 , C08F10/06 , C08F110/06 , C08F210/06 , C08F210/16 , C08F210/14 , C08F4/65904 , C08F4/65916
摘要： supported catalyst system may include a titanated silica-containing catalyst support having at least 0.1 wt % of Ti and a specific surface area of from 150 m2/g to 800 m2/g. The Ti may be of a titanium compound of the general formula selected from RnTi(OR′)m, and (RO)nTi(OR′)m, wherein R and R′ are the same or different and are selected from hydrocarbyl groups containing from 1 to 12 carbons or halogens, wherein n is 0 to 4, wherein m is 0 to 4, and wherein m+n equals 4. The supported catalyst system may include a catalyst activating agent and a metallocene. The supported catalyst system may be obtained by a process including titanating a silica-containing catalyst support with at least one vapourised titanium compound, and treating the titanated silica-containing catalyst support with a catalyst activating agent and a metallocene.
摘要翻译： 负载的催化剂体系可以包括具有至少0.1重量％Ti和比表面积为150m 2 / g至800m 2 / g的钛酸二氧化硅催化剂载体。 Ti可以是选自RnTi（OR'）m和（RO）n Ti（OR'）m的通式的钛化合物，其中R和R'相同或不同，并且选自含有 1至12个碳或卤素，其中n为0至4，其中m为0至4，并且其中m + n等于4.负载的催化剂体系可包括催化剂活化剂和茂金属。 负载催化剂体系可以通过包括用至少一种蒸发的钛化合物对含二氧化硅的催化剂载体进行钛化并用催化剂活化剂和茂金属处理该含钛催化剂载体的方法获得。
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公开(公告)号：US20140288258A1
公开(公告)日：2014-09-25
申请号：US14299702
申请日：2014-06-09
IPC分类号： C08F110/02
CPC分类号： B01J19/2435 , B01J8/00 , C08F2/01 , C08F10/00 , C08F10/02 , C08F110/02 , Y10T428/1352 , Y10T428/139 , Y10T428/1393 , Y10T428/1397 , Y10T428/31855 , C08F2/001 , C08F4/6548 , C08F2/14 , C08F4/6546 , C08F4/6557
摘要： The invention relates to A process for the polymerisation of ethylene to produce a polyethylene resin in at least two slurry loop reactors connected to each other in series, the resin having a bimodal molecular weight distribution, a molecular weight distribution MWD of at least 7.0, an HLMI of from 1 to 100 g/10 min, and a density of from 0.935 to 0.960 g/cm3, wherein in one reactor 30 to 47 wt % based on the total weight of the polyethylene resin of a high molecular weight (HMW) polyethylene fraction is produced having an HL275 of from 0.05 to 1.8 g/10 min (the equivalent of HLMI of from 0.01 to 1.56 g/10 min), a density of from 0.925 to 0.942 g/cm3 and an MWD of at least 5.0, and in the other reactor a low molecular weight (LMW) polyethylene fraction is produced having an HLMI of from 10 to 1500 g/10 min and a density of from 0.960 to 0.975 g/cm3, in the presence of a Ziegler-Natta catalyst system.
摘要翻译： 本发明涉及一种在至少两个串联连接的浆料环管反应器中聚合乙烯以生产聚乙烯树脂的方法，该树脂具有双峰分子量分布，至少7.0的分子量分布MWD， HLMI为1至100g / 10分钟，密度为0.935至0.960g / cm3，其中在一个反应器中基于聚乙烯树脂的总重量为30至47wt％的高分子量（HMW）聚乙烯 产生HL275为0.05〜1.8g / 10min（相当于HLMI为0.01〜1.56g / 10min），密度为0.925〜0.942g / cm3，MWD为5.0以上的级分，以及 在另一反应器中，在齐格勒 - 纳塔催化剂体系的存在下，制备HLMI为10-1500g / 10min，密度为0.960-0.975g / cm3的低分子量（LMW）聚乙烯级分。
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公开(公告)号：US11952444B2
公开(公告)日：2024-04-09
申请号：US17285526
申请日：2019-10-14
IPC分类号： C08L23/08 , C07F17/00 , C08F4/659 , C08F4/6592 , C08F210/16
CPC分类号： C08F210/16 , C07F17/00 , C08F4/65912 , C08F4/65916 , C08F4/65927 , C08L23/0815
摘要： The present invention relates to a polyethylene resin prepared using a continuous process having and at least one metallocene catalyst composition:
a molecular weight distribution Mw/Mn lower than 6.5;
a molecular weight distribution Mw/Mn of at least 3.5;
a melt index ranging from an HLMI of at least 1.20 g/10 min to an MI2 of at most 6.0 g/10 min wherein MI2 is determined according to ISO 1133:1997 at a temperature of 190° C. and under a load of 2.16 kg, and HLMI is determined according to ISO 1133:1997, at a temperature of 190° C. and under a load of 21.6 kg;
melt index ratio HLMI/MI2 below or equal to 30; and
a melt strength of X in Newtons, as determined by Göttfert Rheotens Melt Strength Apparatus, 190° C., as described in the Experimental section, satisfying the following equations (1) and/or (2)
X is greater than −0.026 ln(MI2)+0.0498 (1)
X is greater than −0.026 ln(HLMI)+0.1334 (2)
with Mw being the weight-average molecular weight and Mn being the number-average molecular weight.
The present invention also relates to articles comprising said polyethylene resin as well as process for preparing said resin.-
公开(公告)号：US20220186009A1
公开(公告)日：2022-06-16
申请号：US17603049
申请日：2020-04-10
IPC分类号： C08L23/14
摘要： The invention relates to a polypropylene composition comprising: (A) a first polypropylene which is a metallocene-catalyzed homopolymer, or a metallocene-catalyzed random copolymer of propylene and of a co-monomer having at most 0.5% by weight of co-monomer content, relative to the total weight of the random copolymer, as determined by 13C NMR analysis; and (B) a second polypropylene which is a metallocene-catalyzed random copolymer of propylene and of a co-monomer; wherein said polypropylene composition is as defined in claim 1. The present invention also relates to a process for the preparation of said polypropylene composition. The present invention also relates to an article comprising said polypropylene composition.
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公开(公告)号：US10053563B2
公开(公告)日：2018-08-21
申请号：US15120200
申请日：2015-07-02
IPC分类号： C08L23/06
CPC分类号： C08L23/06 , C08J3/005 , C08J2323/06 , C08J2400/30 , C08L2203/10 , C08L2205/025 , C08L2205/03 , C08L2205/06 , C08L2207/062 , C08L2207/20 , C08L2314/02
摘要： A process may include providing a polyethylene post consumer resin, providing a virgin polyethylene resin, and blending the polyethylene post consumer resin with the virgin polyethylene resin to produce a composition. The polyethylene post consumer resin may have an ESCR of at most 10 hours, a density ranging from 0.950 to 0.967 g/cm3, and an HLMI of 40 to 70 g/10 min. The virgin polyethylene resin may include fractions A and B, with fraction A having a higher molecular weight and lower density than fraction B. Fraction A may have an HL275 of at least 0.1 g/10 min and of at most 4 g/10 min, and a density of at least 0.920 g/cm3 and of at most 0.942 g/cm. The virgin polyethylene resin may have an HLMI of 5 to 75 g/10 min, and a density ranging from 0.945 to 0.960 g/cm3.
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公开(公告)号：US20170321047A1
公开(公告)日：2017-11-09
申请号：US15525675
申请日：2015-11-10
CPC分类号： C08L23/0815 , C08F4/65904 , C08F4/65912 , C08F4/65916 , C08F10/02 , C08L23/06 , C08L23/08 , C08L2205/02 , C08L2314/06 , C08F210/16 , C08F4/65927 , C08F4/65925 , C08F2/001 , C08F210/14 , C08F2500/05 , C08F2500/12 , C08F2500/13 , C08F2500/26
摘要： The present invention relates to a metallocene-catalyzed polyethylene resin comprising at least two metallocene-catalyzed polyethylene fractions A and B, wherein the polyethylene resin comprises: at least 25% to at most 55% by weight of polyethylene fraction A based on the total weight of the polyethylene resin, wherein fraction A has a density at least 0.005 g/cm3 higher than the density of the polyethylene resin; and a melt index MI2 of at least 25.0 g/10 min as determined according to ISO 1133, condition D, at 190° C. and under a load of 2.16 kg; and wherein the polyethylene resin has a density of at least 0.938 g/cm3 to at most 0.954 g/cm3 as measured according to ASTM D-1505 at 23° C.; a melt index MI2 of at least 2.5 g/10 min to at most 25.0 g/10 min as determined according to ISO 1133, condition D, at 190° C. and under a load of 2.16 kg and a molecular weight distribution Mw/Mn of at least 2.6 to at most 4.2, with Mw being the weight-average molecular weight and Mn being the number-average molecular weight. The present invention also relates to an article comprising said resin.
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公开(公告)号：US20140050873A1
公开(公告)日：2014-02-20
申请号：US14060779
申请日：2013-10-23
IPC分类号： C08F10/02
CPC分类号： B01J19/2435 , B01J8/00 , C08F2/01 , C08F10/00 , C08F10/02 , C08F110/02 , Y10T428/1352 , Y10T428/139 , Y10T428/1393 , Y10T428/1397 , Y10T428/31855 , C08F2/001 , C08F4/6548 , C08F2/14 , C08F4/6546 , C08F4/6557
摘要： The invention relates to A process for the polymerisation of ethylene to produce a polyethylene resin in at least two slurry loop reactors connected to each other in series, the resin having a bimodal molecular weight distribution, a molecular weight distribution MWD of at least 7.0, an HLMI of from 1 to 100 g/10 min, and a density of from 0.935 to 0.960 g/cm3,wherein in one reactor 30 to 47 wt % based on the total weight of the polyethylene resin of a high molecular weight (HMW) polyethylene fraction is produced having an HL275 of from 0.05 to 1.8 g/10 min (the equivalent of HLMI of from 0.01 to 1.56 g/10 min), a density of from 0.925 to 0.942 g/cm3 and an MWD of at least 5.0, and in the other reactor a low molecular weight (LMW) polyethylene fraction is produced having an HLMI of from 10 to 1500 g/10 min and a density of from 0.960 to 0.975 g/cm3, in the presence of a Ziegler-Natta catalyst system.
摘要翻译： 本发明涉及一种在至少两个串联连接的浆料环管反应器中聚合乙烯以生产聚乙烯树脂的方法，该树脂具有双峰分子量分布，至少7.0的分子量分布MWD， HLMI为1至100g / 10分钟，密度为0.935至0.960g / cm3，其中在一个反应器中基于聚乙烯树脂的总重量为30至47wt％的高分子量（HMW）聚乙烯 产生HL275为0.05〜1.8g / 10min（相当于HLMI为0.01〜1.56g / 10min），密度为0.925〜0.942g / cm3，MWD为5.0以上的级分，以及 在另一反应器中，在齐格勒 - 纳塔催化剂体系的存在下，制备HLMI为10-1500g / 10min，密度为0.960-0.975g / cm3的低分子量（LMW）聚乙烯级分。
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公开(公告)号：US20210284767A1
公开(公告)日：2021-09-16
申请号：US16330641
申请日：2017-09-07
发明人： Alexandre Welle , Aurélien Vantomme , Jean-François Carpentier , Gilles Schnee , Olivier Miserque , Evgueni Kirillov
IPC分类号： C08F110/02 , C08L23/08 , C08F4/6592 , C08F4/659
摘要： The present invention relates to a new process for preparing a polyethylene using new bis(metallocene) compounds in catalyst compositions. The bis(metallocene) compounds of the invention are homo- or hetero bis(metallocene) molecules in which same or different metallocene moieties are connected by a phenylene bridge. The phenylene bridge is either para-substituted, meta-substituted or ortho-substituted by the two metallocene moieties.
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公开(公告)号：US20210147586A1
公开(公告)日：2021-05-20
申请号：US16629888
申请日：2018-07-11
IPC分类号： C08F4/6592 , C08F2/00 , C08L23/08 , B29C45/00
摘要： The present invention relates to an injection-molded article, comprising at least one metallocene-catalyzed polyethylene resin comprising at least two metallocene-catalyzed polyethylene fractions A and B, wherein the at least one metallocene-catalyzed polyethylene resin comprises: at least 40% to at most 50% by weight of polyethylene fraction A based on the total weight of the at least one metallocene-catalyzed polyethylene resin, wherein fraction A has a melt index MI2 of at least 100.0 g/10 min as determined according to ISO 1133, condition D, at 190° C. and under a load of 2.16 kg; and wherein the at least one metallocene-catalyzed polyethylene resin has a density of at least 0.940 g/cm3 to at most 0.950 g/cm3 as measured on pellets according to ISO 1183 at 23° C.; a melt index MI2 of at least 1.4 g/10 min to at most 2.5 g/10 min as measured on pellets according to ISO 1133, condition D, at 190° C. and under a load of 2.16 kg. The present invention also relates to a process for preparing said injection-molded article, comprising the steps of a) providing at least one metallocene-catalyzed polyethylene resin as described herein; and b) injection-molding said polyethylene resin into an article.
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