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公开(公告)号：US10696774B2
公开(公告)日：2020-06-30
申请号：US14903302
申请日：2014-07-09
IPC分类号： C08F210/06 , C08F293/00 , B32B27/08 , B32B27/32 , C08F4/6592 , C08F4/659
摘要： A propylene-comonomer block copolymer may have a molecular weight distribution Mw/Mn of at least 1.7, a percentage of enthalpy measured between Ti and [Tm−18° C.] of at least 20% of the total enthalpy, and a ratio E1/Co of at least 0.80. The propylene-comonomer block copolymer may be produced by polymerizing propylene in the presence of at least one comonomer and a bridged metallocene catalyst. The bridged metallocene catalyst may include bridged fluorenyl, bridged indenyl metallocene, or any combination thereof. The propylene-comonomer block copolymer may be used as a heat seal layer for biaxially oriented multi-layer films.
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公开(公告)号：US20190161565A1
公开(公告)日：2019-05-30
申请号：US16262514
申请日：2019-01-30
IPC分类号： C08F110/02 , C08F210/00
摘要： The invention covers a supported catalyst system prepared according to a process comprising the following step: i). impregnating a silica-containing catalyst support having a specific surface area of from 150 m2/g to 800 m2/g, preferably 280 m2/g to 600 m2/g, with one or more titanium compounds 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 carbon and halogens, and wherein n is 0 to 4, m is 0 to 4 and m+n equals 4, to form a titanated silica-containing catalyst support having a Ti content of at least 0.1 wt % based on the weight of the Ti-impregnated catalyst support wherein the supported catalyst system further comprises an alumoxane and a metallocene.
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公开(公告)号：US20180340058A1
公开(公告)日：2018-11-29
申请号：US15542846
申请日：2016-01-22
IPC分类号： C08L23/12
摘要： The present invention relates to a polypropylene composition comprising: a first polypropylene homopolymer or random copolymer (PPR1) having a comonomer content lower than the comonomer content of the second polypropylene, a second polypropylene (PPR2) which is a random copolymer of propylene and of the comonomer; said comonomer being an alpha-olefin different from propylene, the melting temperature of the polypropylene composition (Tm(PPR)) being defined as Tm(PPR)>165−6.9*[total comonomer content]−8.4*[comonomer content of the first polypropylene], the difference between the melting temperature and the crystallization temperature of the polypropylene composition ranges from 27 and 33, and a xylene soluble fraction (XS) at 23° C. of not more than 1.5 wt. %. The present invention also relates to a process for the preparation of said polypropylene composition. The present invention further relates to the use of said polypropylene composition for producing films or moulded articles.
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公开(公告)号：US09475893B2
公开(公告)日：2016-10-25
申请号：US14708748
申请日：2015-05-11
IPC分类号： C08F10/14 , C08F10/06 , C08F10/00 , C08F4/02 , C08F4/6392 , C08F4/6592 , C08F110/06 , C08F210/06 , C08F210/16
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： A 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 vaporized titanium compound, and treating the titanated silica-containing catalyst support with a catalyst activating agent and a metallocene.
摘要翻译： 负载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.负载型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金属茂处理含钛催化剂载体的方法获得。
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公开(公告)号：US08911872B2
公开(公告)日：2014-12-16
申请号：US14299702
申请日：2014-06-09
IPC分类号： B32B27/00 , 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 polymerization 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淤浆环流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：US08802210B2
公开(公告)日：2014-08-12
申请号：US14060779
申请日：2013-10-23
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：US11919980B2
公开(公告)日：2024-03-05
申请号：US16633673
申请日：2018-08-02
IPC分类号： C08F4/653 , B01J35/00 , C07F17/00 , C08F4/642 , C08F4/659 , C08F4/6592 , C08F210/16
CPC分类号： C08F210/16 , B01J35/0046 , C07F17/00 , C08F4/6428 , C08F4/65904 , C08F4/65912 , C08F4/65916 , C08F4/65927
摘要： The present invention relates to a catalyst composition comprising:
catalyst component A comprising a bridged metallocene compound with two tetrahydroindenyl groups, each group being unsubstituted or substituted;
catalyst component B comprising a bridged metallocene compound with a substituted or unsubstituted cyclopentadienyl group and a substituted or unsubstituted fluorenyl group;
an optional activator; an optional support; and an optional co-catalyst.
The present invention also relates to a polymerization process using said composition. The invention further relates to olefin polymers at least partially catalyzed by said catalyst composition and articles comprising said olefin polymers.-
公开(公告)号：US11208504B2
公开(公告)日：2021-12-28
申请号：US16629888
申请日：2018-07-11
IPC分类号： C08F10/02 , C08F4/6592 , B29C45/00 , C08F2/00 , C08L23/08 , C08F110/02 , C08F210/02
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.-
公开(公告)号：US20210388133A1
公开(公告)日：2021-12-16
申请号：US17285526
申请日：2019-10-14
IPC分类号： C08F210/16 , C08F4/659 , C08F4/6592
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：US20210317238A1
公开(公告)日：2021-10-14
申请号：US16330612
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： C08F4/6592 , C08F4/642 , C08F210/02 , C08F210/06
摘要： The present invention relates to new bis(metallocene) compounds, new catalyst compositions, process for preparing the new bis(metallocene) compounds and use of said new catalyst compositions to polymerise olefins. 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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