Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By alkyl or aryl transfer between molecules – e.g.,...
Reexamination Certificate
2005-08-30
2005-08-30
Griffin, Walter D. (Department: 1764)
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By alkyl or aryl transfer between molecules, e.g.,...
C585S470000
Reexamination Certificate
active
06936744
ABSTRACT:
The present invention provides a process for producing a monoalkylated aromatic compound, particularly cumene, comprising the step of contacting a polyalkylated aromatic compound with an alkylatable aromatic compound under at least partial liquid phase conditions and in the presence of a transalkylation catalyst to produce the monoalkylated aromatic compound, wherein the transalkylation catalyst comprises a mixture of at least two different crystalline molecular sieves, wherein each of said molecular sieves is selected from zeolite beta, zeolite Y, mordenite and a material having an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07 and 3.42±0.07 Angstrom.
REFERENCES:
patent: 3308069 (1967-03-01), Wadlinger et al.
patent: 3385906 (1968-05-01), Kaufman
patent: 3449070 (1969-06-01), McDaniel et al.
patent: 3751504 (1973-08-01), Keown et al.
patent: 3766093 (1973-10-01), Chu
patent: 3894104 (1975-07-01), Chang et al.
patent: 4016218 (1977-04-01), Haag et al.
patent: 4415438 (1983-11-01), Dean et al.
patent: 4439409 (1984-03-01), Puppe et al.
patent: 4459426 (1984-07-01), Inwood et al.
patent: 4547605 (1985-10-01), Kresge et al.
patent: 4774377 (1988-09-01), Barger et al.
patent: 4826667 (1989-05-01), Zones et al.
patent: 4891458 (1990-01-01), Innes et al.
patent: 4954325 (1990-09-01), Rubin et al.
patent: 4992606 (1991-02-01), Kushnerick et al.
patent: 5236575 (1993-08-01), Bennett et al.
patent: 5250277 (1993-10-01), Kresge et al.
patent: 5334795 (1994-08-01), Chu et al.
patent: 5362697 (1994-11-01), Fung et al.
patent: 5557024 (1996-09-01), Cheng et al.
patent: 5789641 (1998-08-01), Alario et al.
patent: 0789009 (1997-08-01), None
patent: WO 200066520 (2000-11-01), None
Better Michael Alan
Brown Stephen Harold
Cheng Jane Chi Ya
Dandekar Ajit Bhaskar
Smith Charles Morris
ExxonMobil Chemical Patents Inc.
Griffin Walter D.
Kubena L. A.
Tyus D. M.
LandOfFree
Alkylaromatics production does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Alkylaromatics production, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Alkylaromatics production will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3439931