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1.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：EP4032952A1
公开(公告)日：2022-07-27
申请号：EP20866022.5
申请日：2020-09-17
申请人： CHINA PETROLEUM & CHEMICAL CORPORATION , BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION
发明人： ZHU, Guixiang , ZHANG, Taoyi , LYU, Mingfu , ZHENG, Cui , ZHANG, Wei , HAN, Ling , JI, Wenxi , XU, Ning , GUO, Peng
IPC分类号： C08L67/02 , C08K13/02 , C08K5/134 , C08K5/526 , C08K5/20 , C08K3/36 , C08K3/34 , C08K5/098 , C08G63/183 , C08G63/78 , C08J5/18 , A01G13/02 , B65D65/46
摘要： The invention belongs to the field of biodegradable films, and discloses a biodegradable film and its preparation method. The biodegradable film is prepared from a composition comprising: a copolyester obtained by extrusion reaction of a branched aliphatic-aromatic copolyester derived from monomer a, monomer b, monomer c and monomer d with an organic peroxide. The film can be completely degraded into small molecular products such as carbon dioxide, water and the like under natural or composting conditions. Moreover, the film can be prepared having a thickness of 4-50 µm as required, and its mechanical properties can reach the same level as or even better than those of LDPE film.
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