MAGNESIUM DICHLORIDE-ETHANOL ADDUCTS AND CATALYST COMPONENT OBTAINED THEREFROM
申请人:BASELL POLIOLEFINE ITALIA S.R.L.
公开号:US20150266981A1
公开(公告)日:2015-09-24
Catalyst component for the polymerization of olefins comprising Mg, Ti and an electron donor of formula (I)
Where R
1
and R
2
, independently, are selected from hydrogen and C
1
-C
15
hydrocarbon groups, optionally contain an heteroatom selected from halogen, P, S, N, O and Si, which can be fused together to form one or more closed cycles and A is a bivalent bridging group.
MAGNESIUM DICHLORIDE-ETHANOL ADDUCTS AND CATALYST COMPONENTS OBTAINED THEREFROM
申请人:Basell Poliolefine Italia S.r.l.
公开号:EP2900706A1
公开(公告)日:2015-08-05
CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS
申请人:BASELL POLIOLEFINE ITALIA S.R.L.
公开号:US20220298272A1
公开(公告)日:2022-09-22
A solid catalyst component for the polymerization of olefins made from or containing a magnesium halide, a titanium compound having at least a Ti-halogen bond, a first electron donor compound selected from 1,3 diethers (DE), and a second electron donor compound selected from dicarbamates (DC), wherein the first and second electron donor compounds are present in a molar ratio DE:DC ranging from 4.5:1 to 20:1.
[EN] CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS<br/>[FR] COMPOSANTS DE CATALYSEUR POUR LA POLYMÉRISATION D'OLÉFINES
申请人:BASELL POLIOLEFINE ITALIA SRL
公开号:WO2021052733A1
公开(公告)日:2021-03-25
A solid catalyst component for the polymerization of olefins comprising a magnesium halide, a titanium compound having at least a Ti-halogen bond and at least two electron donor compounds one of which being selected from 1,3 diethers (DE) and the other being selected from dicarbamates (DC), said catalyst component being characterized by the fact that said electron donor compounds are present in a molar ratio DE:DC ranging from 4.5:1 to 20:1.
A General Approach towards Catechol and Pyrogallol through Ruthenium‐ and Palladium‐Catalyzed CH Hydroxylation by Weak Coordination
作者:Xinglin Yang、Yonghui Sun、Zhang Chen、Yu Rao
DOI:10.1002/adsc.201300999
日期:2014.5.5
An efficient ruthenium(II)‐ and palladium(II)‐catalyzed CH hydroxylation of aryl carbamates has been developed for the facile synthesis of catechols and pyrogallols. The reaction demonstrates excellent reactivity, regio‐ and chemoselectivity, good functional group compatibility and high yields. The practicality of this method has been proved by a gram‐scale synthesis.