[EN] PREPARATION OF SUBSTITUTED INDENES<br/>[FR] PREPARATION D'INDENES SUBSTITUES
申请人:BASELL POLYOLEFINE GMBH
公开号:WO2004037756A1
公开(公告)日:2004-05-06
The present invention relates to a simple process for preparing specifically substituted indenes of formula (I) or (Ia) to compounds of formula (II) serving as starting materials and to the use of the compounds of formula (II) as starting materials for the synthesis of substituted indenes.
A heterophasic polypropylene resin comprising a polypropylene homopolymer matrix phase (A) and an ethylene-propylene copolymer phase (B) dispersed within the matrix, wherein the xylene soluble fraction of the heterophasic polypropylene resin is in the range 20 to less than 50 wt %; the heterophasic polypropylene resin has an MFR2 of 0.01 to 50 g/10 min; the ethylene content of the xylene soluble fraction of the heterophasic polypropylene resin is in the range of at least 20 wt % to less than 50 wt %; the heterophasic polypropylene resin has a notched charpy impact strength at −20 C of at least 25 kJ/m
2
, preferably at least 50 kJ/m
2
; and wherein the MFR
2
(Matrix)/MFR
2
(XS)≧5, preferably ≧10.
A process for the preparation of a propylene homopolymer comprising polymerising propylene in the presence of a catalyst comprising: (i) a metallocene complex of a group (IV) metal said metallocene comprising at least two cyclopentadienyl type ligands; (ii) a boron cocatalyst; and (iii) an aluminoxane cocatalyst; said catalyst being in solid form, preferably in solid particulate form, and being free from an external carrier; preferably wherein the melting point of the propylene polymer is controlled by adjusting the amount of or nature of the boron cocatalyst.
A ligand of formula (I′)
wherein
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
-hydrocarbyl, tri(C
1-20
-alkyl)silyl, C
6-20
-aryl, C
7-20
-arylalkyl or C
7-20
-alkylaryl;
R
2
and R
2
′ are each independently a C
1-20
hydrocarbyl radical;
R
5′
is a C
1-20
hydrocarbyl group;
R
6
, R
6′
, R
7
and R
7′
are each independently hydrogen or a C
1-20
hydrocarbyl group;
Ar and Ar′ are independently an aryl or heteroaryl group having up to 20 carbon atoms;
each R
1
is a C
1-20
hydrocarbyl group or two R
1
groups on adjacent carbon atoms taken together can form a fused 5 or 6 membered non aromatic ring with the Ar group; and
each R
4
is a C
1-20
hydrocarbyl group;
and the dotted lines represent a double bond present in between carbons 1 and 2 or 2 and 3 of the indenyl ring.
A catalyst comprising (i) a metallocene complex of a group (IV) metal said metallocene comprising at least two cyclopentadienyl type ligands; (ii) a boron cocatalyst; and (iii) an aluminoxane cocatalyst; said catalyst being in solid form, preferably in solid particulate form, and being free from an external carrier.