-
公开(公告)号：US12060378B2
公开(公告)日：2024-08-13
申请号：US17715343
申请日：2022-04-07
发明人： Tsutomu Uzawa , Toshiya Uozumi
IPC分类号： C08F110/06 , C07F7/28 , C08F4/649 , C08F4/653 , C08F4/654 , C08F210/06
CPC分类号： C07F7/28 , C08F4/6494 , C08F4/653 , C08F4/654 , C08F110/06 , C08F210/06
摘要： Provided is a solid catalyst component for olefin polymerization which is capable of exerting favorable ethylene responsiveness while forming a propylene homopolymer having high stereoregularity, when subjected to ethylene-propylene copolymerization reaction. The present invention provides a solid catalyst component for olefin polymerization, comprising titanium, magnesium, halogen, and an internal electron-donating compound, wherein the internal electron-donating compound comprises an electron-donating compound (i) having a phthalic acid ester structure, and an electron-donating compound (ii) having two or more kinds of groups selected from an ether group, an ester group and a carbonate group and having no phthalic acid ester structure, wherein a content ratio of the electron-donating compound (ii) having two or more kinds of groups selected from an ether group, an ester group and a carbonate group and having no phthalic acid ester structure is 0.5 to 1.5% by mass.
-
公开(公告)号：US11851506B2
公开(公告)日：2023-12-26
申请号：US17953459
申请日：2022-09-27
发明人： Gurmeet Singh , Rashmi Rani , Sukhdeep Kaur , Yajnaseni Biswas , Anju Chopra , Gurpreet Singh Kapur , Sankara Sri Venkata Ramakumar
IPC分类号： C08F110/02 , C08F4/654
CPC分类号： C08F110/02
摘要： The present invention relates to a process for preparation of a catalyst for polymerization of olefins. The catalyst has a particle size of between 5 to 30 microns with activity ranging from 3-4 Kg (co)polymer per g of catalyst and excellent hydrogen response. The method for preparation of the catalyst comprises the steps of: a) contacting a liquid magnesium complex, an electron donor, and a titanium halide compound to form a solution; b) obtaining the solid uniform catalyst particles by precipitation; and c) washing the catalyst particles to obtain solid uniform catalyst., for producing (co)polymer of ethylene with other olefins have fines less than 10 wt. %.
-
公开(公告)号：US20230391907A1
公开(公告)日：2023-12-07
申请号：US18248996
申请日：2021-10-15
申请人： CHINA PETROLEUM & CHEMICAL CORPORATION , BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION
发明人： Jin ZHAO , Junling ZHOU , Xianzhi XIA , Yuexiang LIU , Tao LIU , Yongtai LING , Weili LI , Futang GAO , Long CHEN , Yang TAN , Chunhong REN
IPC分类号： C08F210/06 , C08F210/08 , C08F4/646 , C08F4/654 , C08F4/643 , C08F4/649
CPC分类号： C08F210/06 , C08F210/08 , C08F4/6465 , C08F4/6543 , C08F4/6435 , C08F4/6437 , C08F4/6497
摘要： A copolymer contains, based on the total amount of structural units of the copolymer, 90-99 mol % of propylene structural units and 1-10 mol % of butene structural units. The xylene solubles content of the copolymer is less than or equal to 4 wt %, and preferably less than or equal to 3 wt %. The propylene-butene copolymer is substantially free of fraction having a molecular weight lower than 1000. The copolymer has a melt flow index of greater than or equal to 20 g/10 min as measured at 230° C. under a load of 2.16 kg. The propylene-butene copolymer has a high melt flow index and few xylene solubles, and does not contain a phthalate-type plasticizer, and can be used in fields such as food and medical and health services.
-
公开(公告)号：US11542349B2
公开(公告)日：2023-01-03
申请号：US16468616
申请日：2017-12-12
IPC分类号： C08F110/06 , C08F2/34 , C08F4/646 , C08F4/651 , C08F4/654 , C08F4/656 , C08F8/50 , C08F210/06 , C08K5/14
摘要： The invention relates to a process for the preparation of a propylene homopolymer or a propylene α-olefin random copolymer comprising the step of a) preparing a propylene homopolymer or a propylene α-olefin random copolymer, wherein the α-olefin is chosen from the group consisting of ethylene, and α-olefins having 4 to 10 carbon atoms, for example 1-butene or 1-hexene by contacting at least the propylene and optionally α-olefin, with a catalyst in a gas-phase reactor at a temperature T1 and a pressure P1, wherein T1 is chosen in the range from 75 to 90° C., for example in the range from 77 to 85° C., for example in the range from 78 to 83° C., wherein P1 is chosen in the range from 22 to 30 bar to prepare a propylene homopolymer (A′) or a propylene α-olefin random copolymer (A′).
-
公开(公告)号：US11370904B2
公开(公告)日：2022-06-28
申请号：US16626095
申请日：2018-06-27
申请人： BOREALIS AG
发明人： Jingbo Wang , Markus Gahleitner , Elisabeth Potter , Jani Aho , Klaus Bernreitner , Luc Monnissen , Meta Cigon
IPC分类号： C08F2/00 , C08F210/06 , C08F4/654 , C08L23/14 , C08F10/06
摘要： The invention relates to a process for producing a polypropylene composition by sequential polymerization the polypropylene composition having an improved balanced combination of high flowability, high stiffness and impact, and high level of optical properties.
-
公开(公告)号：US11325928B2
公开(公告)日：2022-05-10
申请号：US16769271
申请日：2018-12-03
IPC分类号： C08F4/655 , C08F4/654 , C07F7/28 , C08F210/16
摘要： A modified spray-dried Ziegler-Natta (pro)catalyst system comprising a Ziegler-Natta (pro)catalyst, a carrier material, and a tetrahydrofuran/ethanol modifier; polyolefins; methods of making and using same; and articles containing same.
-
公开(公告)号：US11325927B2
公开(公告)日：2022-05-10
申请号：US16769267
申请日：2018-12-03
发明人： Wesley R. Mariott , C. Dale Lester , Nitin Borse
IPC分类号： C08F4/654 , C08F4/655 , C07F7/28 , C08F210/16
摘要： An activated, titanium-based, spray-dried Ziegler-Natta catalyst system containing a titanium-based Ziegler-Natta catalyst, a carrier material, and an activator mixture comprising an effective amount of an activator mixture comprising triethylaluminum and diethylaluminum chloride for producing a substantially uniform comonomer composition distribution. Also, polyolefins; methods of making and using same; and articles containing same.
-
公开(公告)号：US11311870B2
公开(公告)日：2022-04-26
申请号：US16484234
申请日：2017-12-13
发明人： Edward F. Smith , George A. Vaughan , Michael Awe , James R. Sollen , Ronald N. Cooke , Sateesh K. Rajput , Ahmed H. Ali
IPC分类号： C08F4/654 , C08F4/655 , C08F10/00 , B01J38/00 , B01J31/22 , B01J31/26 , C08F10/02 , C08F10/06
摘要： A process for reducing the loss of catalyst activity of a Ziegler-Natta catalyst is provided. The process includes preparing a Ziegler-Natta (ZN) catalyst by contacting the ZN catalyst with at least one aluminum alkyl compound to produce a reduced ZN catalyst and storing and/or transporting the reduced ZN catalyst for at least 20 days at a temperature of 25° C. or less. The reduced ZN catalyst may be used for polymerizing polyolefin polymers.
-
公开(公告)号：US20220056174A1
公开(公告)日：2022-02-24
申请号：US17298812
申请日：2019-11-26
发明人： DIEGO BRITA , CLAUDIO CAVALIERI
摘要： A process for the preparation of a propylene polymer containing a coloring agent in an amount ranging from 0.2 to 30 ppm referred to the weight of propylene polymer, including the steps of: a) providing a solid ZN catalyst component made from or containing Mg, Ti, halogen and an internal electron donor compound, wherein the Ti being in an amount ranging from 0.1 to 10% of the total weight of solid catalyst component; b) providing a coloring agent made from or containing at least a pigment; c) mixing the ZN catalyst particles and the coloring agent in a liquid hydrocarbon medium, thereby obtaining a slurry and d) feeding the slurry to a polymerization reactor and subjecting the reactor to polymerization conditions, thereby yielding the propylene polymer.
-
公开(公告)号：US11254758B2
公开(公告)日：2022-02-22
申请号：US16494501
申请日：2018-03-16
摘要： The present invention relates to a process for preparing a procatalyst for polymerization of olefins, said process comprising contacting a magnesium-containing support with a halogen-containing titanium compound, an internal electron donor being a substituted 1,2-phenylene aromatic diester compound.
-
-
-
-
-
-
-
-
-
搜索结果
565 条记录 (耗时 0.018 秒)
