-
公开(公告)号：US20240352159A1
公开(公告)日：2024-10-24
申请号：US18682304
申请日：2022-08-10
IPC分类号： C08F4/76 , C08F110/04 , C08F110/14
CPC分类号： C08F4/76 , C08F110/04 , C08F110/14
摘要： The invention relates to a process for preparing polyalpha-olefins using a catalyst composition comprising a reaction product of an organometallic complex and a co-catalyst, wherein the comprising an organometallic complex is represented by the general formula: LMXn wherein: (i) ‘L’ is an organic ligand; (ii) ‘M’ is a transition metal having a valency of ‘p’, wherein the metal ‘M’ is selected from Ti, Zr, and Hf; (iii) ‘X’ is an anionic ligand to the metal ‘M’, and wherein ‘X’ is selected from the group consisting of halogens, alkyls, aralkyls, alkoxides, amides, and combinations thereof; (iv) ‘n’ is the number of ‘X’ groups and equals p-2.
-
2.发明授权公开(公告)号：US11155659B2
公开(公告)日：2021-10-26
申请号：US16500645
申请日：2018-04-04
发明人： Nicolaas Hendrika Friederichs , Antonio Vittoria , Roberta Cipullo , Vincenzo Busico , Ilya Borisov , Alexander Voskoboynikov , Bogdan A. Guzeev , Dmitry Y. Mladentsev , Mikhail I. Sharikov , Dmitry Uborsky , Hendriksen Coen
IPC分类号： C07F17/00 , C08F4/64 , C08F4/76 , C08F210/16 , C08F4/6392
摘要： The invention relates to a metallocene complex according to formula A, wherein R1-R10 are independently selected from H, C1-C10 alkyl, C7-C20 Aralkyl groups, and C1-C10 alkoxy groups; wherein R11 is selected from methyl, ethyl, propyl, isopropyl, butyl, phenyl; wherein R1 and R2, R3 and R4, R4 and R5, R5 and R6, R7 and R8, R8 and R9, and/or R9 and R10 can be connected to form a ringstructure; wherein R0 is selected from a C1-C10 alkyl group or an aryl group wherein M is selected from Ti, Zr and Hf, X is an anionic ligand to M, z is the number of X groups and equals the valence of M minus 2. The invention further relates to a catalyst for preparing polyolefins, a process for polymerizing olefins and to polymers prepared by said catalyst system.
-
公开(公告)号：US20190248933A1
公开(公告)日：2019-08-15
申请号：US16344837
申请日：2017-10-24
IPC分类号： C08F110/02 , C08F4/655
摘要： The invention relates to a process for the production of ultra high molecular weight polyethylene in the presence of a catalyst system that comprises (I) the solid reaction product obtained from the reaction of a) a hydrocarbon solution containing 1) an organic oxygen containing magnesium compound or a halogen containing magnesium compound and 2) an organic oxygen containing titanium compound and b) an aluminium compound of the formula AIRaX(3-a) where R is a hydrocarbylgroup containing (3-10) carbon atoms, X is an halogenide and 0
-
公开(公告)号：US09994654B2
公开(公告)日：2018-06-12
申请号：US15512677
申请日：2015-09-03
IPC分类号： C08F110/02
CPC分类号： C08F110/02 , C08F4/6565 , C08F4/6567 , C08F4/6494 , C08F2500/01 , C08F2500/11 , C08F2500/18 , C08F2500/24
摘要： 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
IPC分类号： C08F110/02
CPC分类号： C08F110/02 , C08F4/6565 , C08F4/6567 , C08F4/6494 , C08F2500/01 , C08F2500/11 , C08F2500/18 , C08F2500/24
摘要： 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.
-
公开(公告)号：US11472895B2
公开(公告)日：2022-10-18
申请号：US17267663
申请日：2019-08-29
发明人： Coen Hendriksen , Nicolaas Hendrika Friederichs , Jaiprakash Brijlal Sainani , Anamitra Chatterjee , Vyatcheslav Izmer , Dmitry Kononovich , Alexander Voskoboynikov , Vincenzo Busico , Roberta Cipullo , Antonio Vittoria , Oleg V. Samsonov
IPC分类号： C08F210/16 , C08F4/6592 , C08F4/659
摘要： The present invention provides a compound according to formula (I): (I) wherein: •R2 is abridging moiety containing at least one sp2 hybridised carbon atom; •each R4, R4′, R7 and R7′ are hydrogen or moieties comprising 1-10 carbon atoms, wherein each R4, R4′, R7 and R7′ are the same; •each R5, R5′, R6 and R6′ are moieties comprising 1-10 carbon atoms, wherein each R5, R5′, R6 and R6′ are the same; and •Z is a moiety selected from ZrX2, HfX2, or TiX2, wherein X is selected from the group of halogens, alkyls, aryls and aralkyls. Such compound allows for the preparation of catalyst systems that provide improved olefin reactivity, such as ethylene reactivity, increased molecular weight in olefin polymerisation, such as increased Mw in ethylene polymerisation, and increased comonomer incorporation in copolymerisation reactions of olefins, such as in copolymerisation reactions of ethylene with 1-hexene.
-
公开(公告)号：US10954320B2
公开(公告)日：2021-03-23
申请号：US15776859
申请日：2016-11-21
IPC分类号： C08F110/02 , C08F210/16 , B32B27/08 , B32B27/32 , C08F10/02
摘要： The invention is directed to polyethylene having a density in the range≥940 and ≤960 kg/m3, Melt Flow Rate 190/21.6≥1.5 and ≤4.0 g/10 min at 190 degrees Celsius and MWD≥3 and ≤12. The polyethylene is 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
摘要： 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
摘要： 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：US20180355076A1
公开(公告)日：2018-12-13
申请号：US15776859
申请日：2016-11-21
IPC分类号： C08F10/02
CPC分类号： C08F10/02 , C08F110/02 , C08F210/16 , C08F2500/01 , C08F2500/07 , C08F2500/12 , C08F2500/18 , C08F210/08 , C08F210/02 , C08F2/001
摘要： The invention is directed to polyethylene having a density in the range≥940 and ≤960 kg/m3, Melt Flow Rate 190/21.6≥1.5 and ≤4.0 g/10 min at 190 degrees Celsius and MWD≥3 and ≤12. The polyethylene is applied in the production of pipes.
-
-
-
-
-
-
-
-
-
搜索结果
25 条记录 (耗时 0.013 秒)
