A complex of formula (I) wherein M is zirconium or hafnium; each X independently is a sigma ligand; L is a divalent bridge selected from -R'2C-, -R'2C-CR'2-, -R'2Si-, -R'2Si-SiR'2-, -R'2Ge-, wherein each R' is independently a hydrogen atom or a C1-C20-hydrocarbyl group optionally containing one or more silicon atoms or heteroatoms of Group 14-16 of the periodic table or fluorine atoms, and optionally two R' groups taken together can form a ring; R2 and R2' are each independently a C1-C20 hydrocarbyl group, -OC1- hydrocarbyl group or -SC1-20 hydrocarbyl group; R5 is a -OC1-20 hydrocarbyl group or -SC1-20 hydrocarbyl group, said R5 group being optionally substituted by one or more halo groups; R5' is hydrogen or a C1-20 hydrocarbyl group; -OC1-20 hydrocarbyl group or -SC1-20 hydrocarbyl group; said C1-20 hydrocarbyl group being optionally substituted by one or more halo groups; R6 and R6' are each independently a C1-20 hydrocarbyl group; -OC1-20 hydrocarbyl group or -SC1-20 hydrocarbyl group; each R1 and R1' are independently -CH2Rx wherein Rx are each independently H, or a C1-20 hydrocarbyl group, optionally containing heteroatoms.
A catalyst in solid particulate form free from an external carrier material comprising (i) a complex of formula (I) wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from -R'2C-, -R'2C-CR'2-, -R'2Si-, -R'2Si-Si R'2-, -R'2 Ge-, wherein each R' is independently a hydrogen atom, C1-20-alkyl, tri(C1-20-alkyl)silyl, C6-20-aryl, C7-20-arylalkyl or C7-20-alkylaryl; R2 is a C1-20-hydrocarbyl radical; R2' is a C1-20-hydrocarbyl radical;R6 is a linear or branched aliphatic C1-20-hydrocarbyl group, SR9or OSR9;R6' is a linear or branched aliphatic C1-20-hydrocarbyl group, SR9'or OR9'; with the proviso that neither R6 or R6' represents a group having a quaternary carbon atom directly attached to the indenyl ring; R9 is a C1-20-hydrocarbyl group;R9' is a C1-20-hydrocarbyl group; Ar is a C6-12-aryl or C5-12-heteroaryl group optionally carrying one or more substituents R8; Ar' is a C6-12-aryl or C5-12-heteroaryl group optionally carrying one or more substituents R8';each R8 is a C1-20-hydrocarbyl group;each R8' is a C1-20 -hydrocarbyl group;wherein at least two of R2 and R2'; R6 and R6'; or Ar and Ar' are the same;and (ii) a cocatalyst comprising a compound of a group 13 metal, e.g. Al or boron.
A catalyst in solid particulate form free from an external carrier material comprising
(i) a complex of formula (I)
wherein
M is zirconium or hafnium;
each X is a sigma ligand;
L is a divalent bridge selected from —R′
2
C—, —R′
2
C—CR′
2
—, —R′
2
Si—, —R′
2
Si—SiR′
2
—, —R′
2
Ge—, wherein each R′ is independently a hydrogen atom, C
1-20
-alkyl, tri(C
1-20
-alkyl)silyl, C
6-20
-aryl, C
7-20
-arylalkyl or C
7-20
-alkylaryl;
R
2
is a C
1-20
-hydrocarbyl radical;
R
2′
is a C
1-20
-hydrocarbyl radical;
R
6
is a linear or branched aliphatic C
1-20
-hydrocarbyl group, SR
9
or OR
9
;
R
6′
is a linear or branched aliphatic C
1-20
-hydrocarbyl group, SR
9′
or OR
9′
;
with the proviso that neither R
6
or R
6′
represents a group having a quaternary carbon atom directly attached to the indenyl ring;
R
9
is a C
1-20
-hydrocarbyl group;
R
9′
is a C
1-20
-hydrocarbyl group;
Ar is a C
6-12
-aryl or C
5-12
-heteroaryl group optionally carrying one or more substituents R
8
;
Ar′ is a C
6-12
-aryl or C
5-12
-heteroaryl group optionally carrying one or more substituents R
8′
;
each R
8
is a C
1-20
-hydrocarbyl group;
each R
8′
is a C
1-20
-hydrocarbyl group; and
wherein at least two of R
2
and R
2′
; R
6
and R
6′
; or Ar and Ar′ are the same;
and (ii) a cocatalyst comprising a compound of a group 13 metal, e.g. Al or boron.
PROCESS FOR THE PREPARATION OF A LIGAND FOR A CATALYST
申请人:Borealis AG
公开号:EP3301098A1
公开(公告)日:2018-04-04
A catalyst in solid particulate form free from an external carrier material comprising (i) a complex of formula (I)
wherein
M is zirconium or hafnium;
each X is a sigma ligand;
L is a divalent bridge selected from -R'2C-, -R'2C-CR'2-, -R'2Si-, -R'2Si-SiR'2-,-R'2Ge-, wherein each R' is independently a hydrogen atom, C1-20-alkyl, tri(C1-20-alkyl)silyl, C6-20-aryl, C7-20-arylalkyl or C7-20-alkylaryl;
R2 is a C1-20-hydrocarbyl radical;
R2' is a C1-20-hydrocarbyl radical;
R5 is a linear or branched aliphatic C1-20-hydrocarbyl group, SR9 or OR9;
R6' is a linear or branched aliphatic C1-20-hydrocarbyl group, SR9' or OR9';
with the proviso that neither R6 or R6' represents a group having a quaternary carbon atom directly attached to the indenyl ring;
R9 is a C1-20-hydrocarbyl group;
R9' is a C1-20-hydrocarbyl group;
Ar is a C6-12-aryl or C5-12-heteroaryl group optionally carrying one or more substituents R8;
Ar' is a C6-12-aryl or C5-12-heteroaryl group optionally carrying one or more substituents R8';
each R8 is a C1-20-hydrocarbyl group;
each R8' is a C1-20-hydrocarbyl group;
wherein at least two of R2 and R2'; R6 and R6'; or Ar and Ar' are the same;
and (ii) a cocatalyst comprising a compound of a group 13 metal, e.g. A1 or boron.
Process for preparing heterophasic propylene copolymers
申请人:BOREALIS AG
公开号:US11078304B2
公开(公告)日:2021-08-03
Process for producing a heterophasic propylene copolymer using a specific class of metallocene complexes in a multistage polymerization process including a gas phase polymerization step. The invention further relates to the use of catalysts which comprise a specific class of metallocene complexes to produce a heterophasic propylene copolymer in a multistep process including a gas phase polymerization step.