Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Reexamination Certificate
2006-03-07
2006-03-07
Lorengo, J. A. (Department: 1755)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
C502S107000, C502S132000, C502S133000, C526S124700, C526S124900, C526S125800
Reexamination Certificate
active
07008898
ABSTRACT:
The invention relates to a method for producing a poly-1-olefin by polymerisation of a 1-olefin of the formula R4CH═CH2, in which R4is hydrogen or an alkyl radical having from 1 to 10 carbon atoms, in suspension, in solution or in the gas phase, at a temperature of from 20 to 200° C. and a pressure of from 0.5 to 50 bar, in the presence of a catalyst which consists of the product of the reaction of a magnesium alkoxide with a transition-metal compound (component a) and an organometallic compound (component b), whose component a has been produced by reacting a transition-metal compound of titanium, zirconium, vanadium or chromium with a gelatinous dispersion of the magnesium alkoxide in an inert hydrocarbon. In accordance with the invention, the gelatinous dispersion is obtained by stirring using a stirring element, or shearing using a high-performance shearing tool, a suspension of magnesium alkoxide powder having a mean particle size, expressed as the d50value, of less than 15 μm, obtained by dry-grinding of commercially available magnesium alkoxide powder having a mean particle size, expressed as the d50value, of greater than or equal to 15 μm, preferably in the range from 100 to 1000 μm, in an inertized mill, in an aliphatic hydrocarbon in which the magnesium alkoxide particles are insoluble. The invention also relates to a catalyst which is suitable for carrying out the method.
REFERENCES:
patent: 3644318 (1972-02-01), Diedrich et al.
patent: 4617284 (1986-10-01), Matsuura et al.
patent: 5648309 (1997-07-01), Böhm
patent: 5917100 (1999-06-01), Böhm et al.
patent: 4017661 (1991-12-01), None
patent: 0223011 (1987-05-01), None
patent: 0319173 (1989-06-01), None
patent: 0532551 (1993-03-01), None
patent: 0607773 (1994-07-01), None
Alt Frank
Böhm Ludwig
Schöneborn Paul
Basell Polyolefine GmbH
Connolly Bove Lodge & Hutz
Lorengo J. A.
Pasterczyk J.
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