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
2005-03-08
2005-03-08
Bell, Mark L. (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...
C502S125000, C502S134000, C502S154000, C502S156000, C526S124900
Reexamination Certificate
active
06864208
ABSTRACT:
A catalyst solid for olefin polymerization comprisingA) at least one magnesium halide,B) at least one metallocene complex andC) at least one compound capable of forming metallocenium ions,is prepared byi) firstly preparing finely divided support particles consisting of the magnesium halide A) and an C1-C8-alcohol having a mean particle diameter of from 1 to 200 μm from an adduct of the magnesium halide A) and a C1-C8-alcohol, where the adduct contains from 1.5 to 5 mol of the C1-C8-alcohol per mole of magnesium halide,ii) then depositing the compound C) capable of forming metallocenium ions on the finely divided support particles andiii) subsequently bringing the reaction product hereby obtained into contact with the metallocene complex B). This catalyst solid can be used for the polymerization or copolymerization of olefins.
REFERENCES:
patent: 4469648 (1984-09-01), Ferraris et al.
patent: 4794096 (1988-12-01), Ewen
patent: 5371260 (1994-12-01), Sangokoya
patent: 5391793 (1995-02-01), Marks et al.
patent: 19833170 (2000-01-01), None
patent: 0284708 (1988-10-01), None
patent: 0435514 (1991-07-01), None
patent: 0436326 (1991-07-01), None
patent: 0447070 (1991-09-01), None
patent: 0500944 (1992-09-01), None
patent: 0621279 (1994-10-01), None
patent: 0633264 (1995-01-01), None
patent: 9109882 (1991-07-01), None
patent: 9906414 (1999-02-01), None
Wisenfeldt et al., “WVII. Racemic and meso diastereomers of group IV metallocene derivatives with symmetrically substituted, dimethylsilanediyl-bridged ligand frameworks. Crystal structure of R,S- Me2Si(3-t-Bu-5-MeC5H2)2-ZrCI2”J. of Organometallic Chemistry369:359-370 (1989).
Bidell Wolfgang
Paczkowski Nicola
Rösch Joachim
Spaether Wolf
Süling Carsten
Basell Polyolefine GmbH
Connolly Bove & Lodge & Hutz LLP
LandOfFree
Method for production of a solid catalyst for olefin... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for production of a solid catalyst for olefin..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for production of a solid catalyst for olefin... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3383010