公开(公告)号：US20230323101A1

公开(公告)日：2023-10-12

申请号：US18022775

申请日：2021-10-14

申请人： TOTALENERGIES ONETECH BELGIUM

发明人： Thomas COUSTHAM ,  Alain STANDAERT ,  Aurélien VANTOMME ,  Armelle SIGWALD

IPC分类号： C08L23/14

CPC分类号： C08L23/14 ,  C08L2205/025 ,  C08L2314/06

摘要： The invention relates to a polypropylene composition comprising: (a) a first metallocene-catalyzed polypropylene (RPP-A) which is homopolymer, or a random copolymer of propylene and of a co-monomer; and (b) a second metallocene-catalyzed polypropylene (RPP-B) which is a random copolymer of propylene and of a co-monomer; wherein said polypropylene composition has:- a total co-monomer content of at least 1.1% by weight relative to the total weight of said polypropylene composition, as determined by 13C NMR analysis, said co-monomer being an alpha-olefin different from propylene;- a melting temperature Tm of at least 130° C., measured by DSC; - a crystallization temperature Tc of at least 95.0° C., measured by DSC; - a ratio of weight average molecular weight (Mw) to number average molecular weight (Mn) [Mw/Mn] of at least 4.50;- a ratio of z-average molecular weight (Mz) to weight average molecular weight (Mw) [Mz/Mw] of at least 2.10; and- a co-monomer distribution ratio R(Mz)/R(Mn) higher than 0.995, wherein R(Mz) is the ratio at Mz of the IR signal measured at 2959 cm-1 on the signal at 2928 cm-1, and R(Mn) is the ratio at Mn of the IR signal measured at 2959 cm-1 on the signal at 2928 cm-1, as determined by IR-detected gel permeation chromatography and- a xylene soluble content (XS) of at most 3.0% by weight. The present invention also relates to a process for the preparation of said polypropylene composition. The present invention also relates to an article comprising said polypropylene composition.

公开(公告)号：US20240209127A1

公开(公告)日：2024-06-27

申请号：US18286383

申请日：2022-05-24

申请人： TOTALENERGIES ONETECH BELGIUM ,  UNIVERSITE DE RENNES ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE

发明人： Thomas COUSTHAM ,  Jean-François CARPENTIER ,  Evgueni KIRILLOV ,  Dimitra THEODOSOPOULOU ,  Alexandre WELLE ,  Lorenzo PIOLA

IPC分类号： C08F4/76 ,  C08F2/06 ,  C08F210/06

CPC分类号： C08F4/76 ,  C08F2/06 ,  C08F210/06

摘要： The present invention relates to a catalyst of Formula (I) wherein R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, L1, M1, Q1 and Q2 have the meaning defined in the description and claims. The present invention also relates to a catalyst composition comprising at least one catalyst according to the invention. an optional activator: an optional support: and an optional co-catalyst. The present invention also relates to the use of a catalyst or catalyst composition according to the invention for the preparation of an olefin polymer. The present invention also relates to an olefin polymerization process. the process comprising: contacting a catalyst or a catalyst composition according to the invention, with an olefin monomer, optionally hydrogen, and optionally one or more olefin comonomers: polymerizing the monomer, and the optionally one or more olefin comonomers, in the presence of the at least one catalyst composition, and optional hydrogen, thereby obtaining an olefin polymer. The present invention also relates to olefin polymers and articles comprising said olefin polymer.