Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2005-10-13
2008-08-19
Lu, Caixia (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S129000, C526S172000, C502S103000, C502S117000, C502S120000, C502S171000
Reexamination Certificate
active
07414099
ABSTRACT:
Embodiments of the present invention include a method of polymerizing olefins comprising contacting olefins with a catalyst composition made by the process of combining a hindered polyalicyclic alkyl catalyst precursor with a particulate inorganic oxide for a deposition time greater than 2 hours to form a catalyst composition. Embodiments of the present invention also include catalyst compositions comprising a hindered polyalicyclic alkyl catalyst precursor made by the process of combining the hindered polyalicyclic alkyl catalyst precursor with a particulate inorganic oxide for a deposition time greater than 2 hours to form the catalyst composition. In one embodiment, the hindered polyalicyclic alkyl catalyst precursor is formed by first combining an acid, a compound having the formula RX, and a metal oxide selected from the group consisting of Group 3 to Group 10 oxide compounds to produce a catalyst precursor; characterized in that R is selected from the group consisting of hindered polyalicyclic alkyls, and substituted derivatives thereof, and X is selected from the group consisting of any suitable leaving group.
REFERENCES:
patent: 3642749 (1972-02-01), Johnson et al.
patent: 3704287 (1972-11-01), Johnson et al.
patent: 4065612 (1977-12-01), Hamer et al.
patent: 5698723 (1997-12-01), Dai et al.
patent: 6326443 (2001-12-01), Monoi et al.
patent: 6569966 (2003-05-01), {hacek over (S)}indeá{hacek over (r)} et et al.
patent: 0454434 (1991-10-01), None
patent: 0808849 (1997-11-01), None
patent: 0931796 (1999-07-01), None
patent: 0931797 (1999-07-01), None
Richer, Jean-Claude, et al.,Chromic Acid Oxidation and Chromate Esters, (1973), pp. 2475-2484; (Quebec).
Richer, Jean-Claude, et al.,Chromate Esters Derived From Tertiary Alchols, (1975), pp. 3087-3093; (Quebec).
Konst, et al.;A Safe, Simple And Rapid Synthesis of t-Butyl Chromate, Synthetic Communications, 10(12) (1980), pp. 905-909; (The Netherlands).
Apecetche Maria A.
Cann Kevin J.
Eisinger Ronald S.
Goode Mark G.
Moorhouse John
Arechederra Leandro
Faulkner Kevin M.
Lu Caixia
Univation Technologies LLC
LandOfFree
Hindered polyalicyclic alkyl catalysts and their use in a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hindered polyalicyclic alkyl catalysts and their use in a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hindered polyalicyclic alkyl catalysts and their use in a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3997351