Polycyclic, fused ring compounds, metal complexes and polymerization process
申请人:——
公开号:US20020062011A1
公开(公告)日:2002-05-23
Compounds and metal complexes comprising a polycyclic, fused ring ligand or inertly substituted derivative thereof having up to 60 atoms other than hydrogen, said ligand comprising at least: (1) a cyclopentadienyl ring, (2) a 6,7,or 8 membered ring other than a 6-carbon aromatic ring, and (3) an aromatic ring, with the proviso that said 6, 7, or 8 membered ring (2), is fused to both the cyclopentadienyl ring (1), and the aromatic ring (3), polymerization catalysts, a process to prepare the novel compounds and complexes, and olefin polymerization processes using the same are disclosed.
The reactivity of substrate functionalized surfactant vesicles
作者:Robert A. Moss、Ronald P. Schrek
DOI:10.1016/s0040-4039(01)84584-6
日期:——
The hydrolysis and thiolysis of active ester-functionalized cationic surfactant vesicles proceed without kinetic resolution of distinct exovesicular and endovesicularreactions.
活性酯官能化的阳离子表面活性剂囊泡的水解和硫解过程没有明显的囊泡和囊泡反应的动力学拆分。
[EN] MULTINUCLEAR TRANSITION METAL POLYMERIZATION CATALYSTS<br/>[FR] CATALYSEURS DE POLYMERISATION DE METAL DE TRANSITION MULTINUCLEAIRE
申请人:DOW CHEMICAL CO
公开号:WO2004060901A1
公开(公告)日:2004-07-22
Multinuclear group 4 metal complexes useful as catalyst components for addition polymerizations and polymerization process, especially suited for preparing syndiotactic polymers of vinylaromatic monomers.
Polycyclic fused heteroring compounds metal complexes and polymerization process
申请人:Graf D David
公开号:US20050010039A1
公开(公告)日:2005-01-13
Metal complexes comprising a polycyclic, heteroatom containing fused ring compound comprising at least a cyclopentadienyl ring having fused thereto a 5-membered polyatomic ring containing one or more ring atoms selected from groups 15 or 16 of the Periodic Table of the Elements and lacking substituents forming 6-membered, aromatic fused rings; polymerization catalysts; and olefin polymerization processes using the same are disclosed.
[EN] DIMER SELECTIVE METALLOCENE CATALYSTS, NON-AROMATIC HYDROCARBON SOLUBLE ACTIVATORS, AND PROCESSES TO PRODUCE POLY ALPHA-OLEFIN OLIGMERS THEREWITH<br/>[FR] CATALYSEURS MÉTALLOCÈNES SÉLECTIFS DIMÈRES, ACTIVATEURS SOLUBLES DANS DES HYDROCARBURES NON AROMATIQUES, ET PROCÉDÉS DE PRODUCTION D'OLIGMÈRES POLY ALPHA-OLÉFINIQUES À L'AIDE DE CEUX-CI
申请人:EXXONMOBIL CHEMICAL PATENTS INC
公开号:WO2021086926A1
公开(公告)日:2021-05-06
The present disclosure generally relates to process to produce a poly alpha-olefin (PAO), comprising: a) introducing a first alpha-olefin to a first catalyst system comprising non-aromatic hydrocarbon soluble activator and a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under first reactor conditions, wherein the first alpha-olefin is preferbaly introduced to the reactor at a flow rate of about 100 g/hr or more, to form a first reactor effluent comprising PAO ( such as at least 60 wt% of PAO dimer and 40 wt% or less of higher oligomers, where the higher oligomers are oligomers that have a degree of polymerization of 3 or more); and b) introducing the first reactor effluent and a second alpha-olefin to a second catalyst composition comprising an acid catalyst, such as BF3, in a second reactor to form a second reactor effluent comprising PAO trimer.