PROCESS FOR SELECTIVELY POLYMERIZING ETHYLENE AND CATALYST THEREFOR
申请人:Klosin Jerzy
公开号:US20110282018A1
公开(公告)日:2011-11-17
The present invention generally relates to a process that selectively polymerizes ethylene in the presence of an alpha-olefin, and to a metal-ligand complex (precatalyst) and catalyst useful in such processes, and to related compositions. The present invention also generally relates to ligands and intermediates useful for preparing the metal-ligand complex and to processes of their preparation.
Gas-chromatographic identification of products formed in iodination of methyl phenols by retention indices
作者:I. V. Gruzdev、I. M. Kuzivanov、I. G. Zenkevich、B. M. Kondratenok
DOI:10.1134/s1070427212090108
日期:2012.9
Iodination reaction followed by conversion of iodine-substituted methylphenols to the corresponding trifluoroacetates was suggested for improving the sensitivity of the gas-chromatographic determination of phenol and its methyl-substituted derivatives (al isomers of mono-and diethylphenols, 2,3,5-, 2,3,6-, and 3,4,5-trimethylphenols) in aqueous media. Acylation products of iodo methylphenols (104 compounds) were identified by linear-logarithmic retention indices on a standard nonpolar polydimethylsiloxane stationary phase, and the pattern of their variation with the number and nature of substituents were characterized. A procedure for identification of methyl-substituted phenols in water in their gas-chromatographic determination with an electron-capture detector was developed.
US8609794B2
申请人:——
公开号:US8609794B2
公开(公告)日:2013-12-17
US9000108B2
申请人:——
公开号:US9000108B2
公开(公告)日:2015-04-07
[EN] PROCESS FOR SELECTIVELY POLYMERIZING ETHYLENE AND CATALYST THEREFOR<br/>[FR] PROCÉDÉ DE POLYMÉRISATION SÉLECTIVE DE L'ÉTHYLÈNE ET CATALYSEUR UTILE À CET EFFET
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:WO2011146291A1
公开(公告)日:2011-11-24
The present invention generally relates to a process that selectively polymerizes ethylene in the presence of an alpha-olefin, and to a metal-ligand complex (precatalyst) and catalyst useful in such processes, and to related compositions. The present invention also generally relates to ligands and intermediates useful for preparing the metal-ligand complex and to processes of their preparation.