Title:
REACTOR BLEND POLYPROPYLENE, PROCESS FOR THE PREPARATION THEREOF AND PROCESS FOR PREPARING METALLOCENE LIGANDS
Document Type and Number:
WIPO Patent Application WO1996020225
Kind Code:
A3
Abstract:
Fractionable, reactor blend polypropylenes, directly obtainable from the polymerization reaction of propylene, having: (a) content of isotactic pentads (mmmm) comprised between 25 and 85%; (b) ratio Mw/Mn<5; containing from 10 to 70% by weight of a fraction soluble in boiling diethyl ether, said fraction having a content of isotactic pentads (mmmm) comprised between 5 and 25%, and from 30 to 90% by weight of a boiling n-heptane-insoluble fraction, soluble in xylene at 135 DEG C., said fraction having a content of isotactic pentads (mmmm) comprised between 50 and 99%, are disclosed. These polymers are suitable as thermoplastic-elastomeric materials. A process for the preparation of these polymers and a process for the preparation of 2-aryl-substituted indenyl metallocene ligands is also disclosed.
Inventors:
RESCONI LUIGI
PIEMONTESI FABRIZIO
YU LIN-CHEN
PIEMONTESI FABRIZIO
YU LIN-CHEN
Application Number:
PCT/EP1995/005016
Publication Date:
September 06, 1996
Filing Date:
December 18, 1995
Export Citation:
Assignee:
MONTELL TECHNOLOGY COMPANY BV (NL)
International Classes:
C07F17/00; C07C13/465; C08F4/64; C08F4/642; C08F4/6592; C08F10/00; C08F10/06; C08F110/06; C08F4/619; C08F4/6192; (IPC1-7): C08F10/06; C08F4/64; C08F10/06; C08F110/06
Domestic Patent References:
| WO1995025757A1 | 1995-09-28 |
Foreign References:
| GB2001080A | 1979-01-24 | |||
| EP0475307A1 | 1992-03-18 | |||
| EP0114391A1 | 1984-08-01 | |||
| EP0530647A1 | 1993-03-10 |
Other References:
JOHN A. EWEN: "Mechanisms of Stereochemical Control in Propylene Polymerization with Soluble 4B Metallocene/Methylalumoxane Catalysts", JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 106, no. 21, 17 October 1984 (1984-10-17), WASHINGTON, pages 6355 - 6364
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