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1.发明公开
公开(公告)号：EP4462449A1
公开(公告)日：2024-11-13
申请号：EP22918300.9
申请日：2022-11-22
申请人： CHINA PETROLEUM & CHEMICAL CORPORATION , Sinopec (Beijing) Research Institute of Chemical Industry Co., Ltd. , Tsinghua University
发明人： ZHANG, Yaru , LI, Qi , ZHANG, Qi , YUAN, Hao , HE, Jinliang , SHAO, Qing , LI, Junluo , QUAN, Hui , WANG, Mingti , HU, Jun , LI, Juan , GAO, Dali , ZHANG, Longgui , HU, Shixun , LU, Hongchao , XIA, Lidong
IPC分类号： H01B3/30 , B32B27/32 , B29C55/12 , C08J5/18 , C08F222/06 , C08F255/02 , C08F212/08 , C08F230/08
摘要： The invention belongs to the field of polymers, and relates to biaxially oriented polypropylene dielectric film, a modified polypropylene material and use thereof. The preparation raw materials of the biaxially oriented polypropylene dielectric film comprise a modified polypropylene grafted with an alkenyl-containing functional monomer. The modified polypropylene grafted with an alkenyl-containing functional monomer comprises a structural unit derived from polypropylene as a matrix phase and a structural unit derived from an alkenyl-containing functional monomer as a dispersion phase. The ash content of the modified polypropylene grafted with an alkenyl-containing functional monomer is less than 50 ppm. In the modified polypropylene grafted with an alkenyl-containing functional monomer, the mass ratio of the structure unit which is derived from an alkenyl-containing functional monomer and in a grafted state to the structure unit which is derived from an alkenyl-containing functional monomer and in a self-polymerization state is greater than or equal to 1.0. D50 of the dispersion phase is less than 450 nm. The biaxially oriented polypropylene dielectric film of the present invention can keep good dielectric performance and energy storage performance at a relatively high working temperature, and is suitable for high-temperature and high-operation field intensity working conditions.
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2.发明公开
公开(公告)号：EP4400522A1
公开(公告)日：2024-07-17
申请号：EP22874965.1
申请日：2022-09-28
申请人： China Petroleum & Chemical Corporation , Sinopec (Beijing) Research Institute of Chemical Industry Co., Ltd.
发明人： WU, Changjiang , LI, Juan , HOU, Liping , WANG, Wei , ZHANG, Taoyi , LUO, Chunxia , ZHANG, Longgui , ZHENG, Junpeng , ZHENG, Gang , DU, Wenjie , SHENG, Jianfang , GAO, Feifei
IPC分类号： C08F210/16 , C08F4/6592 , C08F4/649 , C08F4/642
CPC分类号： C08F4/6592 , C08F210/16 , C08F4/642 , C08L23/08 , C08F4/649
摘要： The present invention relates to the field of ethylene copolymers. Disclosed are an ethylene-copolymerized olefin copolymer having a high comonomer dispersion index, a preparation method therefor, an application thereof, and a composition comprising an ethylene-α-olefin copolymer. The ethylene-α-olefin copolymer contains 70-95mol% a structural unit derived from ethylene and 5-30mol% a structural unit derived from α-olefin. The α-olefin is an olefin having 5-10 carbon atoms, and a dispersion index RMD of the α-olefin structural unit in the molecular chain is greater than 102%. The ethylene-α-olefin copolymer of the present invention has a high comonomer dispersion index.
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公开(公告)号：EP4393962A1
公开(公告)日：2024-07-03
申请号：EP22874960.2
申请日：2022-09-28
申请人： China Petroleum & Chemical Corporation , Sinopec (Beijing) Research Institute of Chemical Industry Co., Ltd.
发明人： WANG, Wei , WU, Changjiang , GUO, Tianhao , QU, Shuzhang , LI, Juan , ZHANG, Taoyi , HOU, Liping , SHENG, Jianfang , LIU, Na , ZHENG, Gang , ZHANG, Longgui
摘要： The present invention relates to the field of olefin polymerization, and in particular relates to a catalyst composition and an application thereof. The catalyst composition of the present invention comprises the following components: a) a metallocene compound, b) a co-catalyst component, and c) a phenol, the co-catalyst component being a combination of an organoaluminum compound and an alkyl aluminoxane, or a combination of an organoaluminum compound and an organoboron compound. When the catalyst composition of the present invention is used for the copolymerization of ethylene and a cycloolefin or an alkenol, not only can the molecular weight of the polymer be increased, but the content of cycloolefin or alkenol structural unit in the copolymer can also be increased.
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公开(公告)号：EP4332135A1
公开(公告)日：2024-03-06
申请号：EP22794409.7
申请日：2022-03-21
申请人： CHINA PETROLEUM & CHEMICAL CORPORATION , BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION
发明人： GAO, Rong , GOU, Qingqiang , LI, Juan , ZHANG, Xiaofan , LAI, Jingjing , ZHANG, Longgui , ZHOU, Junling , LIN, Jie , LI, Xinyang , SONG, Jianhui , ZHANG, Junhui , AN, Jingyan , ZHAO, Hui , LI, Yan , MA, Dong , GU, Yuanning
IPC分类号： C08F220/68 , C08F4/70
摘要： Disclosed in the present invention are a method for preparing polymer, and an obtained polymer. The method comprises: enabling olefin and unsaturated carboxylate be subjected to a polymerization reaction in the presence of a catalyst to generate an olefin-unsaturated carboxylate polymer, the catalyst comprising a primary catalyst and optionally a cocatalyst, and the primary catalyst comprising at least one complex represented by formula I, formula I', or formula I". By selecting a reacted unsaturated carboxylate monomer, catalysts, and a suitable polymerization process, a spherical and/or sphere-like polymer having good shape is directly prepared without subsequent processing steps such as granulation, and the obtained polymer product is not prone to fouling in a reactor and is convenient for transportation.
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