Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – By addition of entire unsaturated molecules – e.g.,...
Reexamination Certificate
2011-08-02
2011-08-02
Bullock, In Suk (Department: 1772)
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
By addition of entire unsaturated molecules, e.g.,...
C585S500000, C585S502000, C585S519000, C585S520000, C585S530000, C585S532000, C585S533000, C585S800000, C585S820000, C585S823000, C585S833000, C585S868000
Reexamination Certificate
active
07989668
ABSTRACT:
Nitrogen-containing Lewis bases act as poisons for molecular sieve catalysts used in oligomerisation reactions. A lowering of their presence in the feed prior to the contacting thereof with the molecular sieve brings a significant extension of catalyst life. Excessive elimination of these poisons may be disadvantageous. Lowering the levels of these catalyst poisons to more manageable concentrations is therefore preferred.
REFERENCES:
patent: 4153638 (1979-05-01), Bercik et al.
patent: 4307254 (1981-12-01), Smith, Jr.
patent: 4973790 (1990-11-01), Beech et al.
patent: 5414183 (1995-05-01), Abrevaya et al.
patent: 5446231 (1995-08-01), Arganbright et al.
patent: 5569790 (1996-10-01), Frey et al.
patent: 5847230 (1998-12-01), Cottrell et al.
patent: 6019887 (2000-02-01), Ramirez de Agudelo et al.
patent: 6107535 (2000-08-01), Rossini et al.
patent: 6118037 (2000-09-01), Piccoli et al.
patent: 6875901 (2005-04-01), Gartside et al.
patent: 2002/0103406 (2002-08-01), Mathys et al.
patent: 2004/0097773 (2004-05-01), Beckmann et al.
patent: 2005/0107649 (2005-05-01), Cheung et al.
patent: 2005/0137442 (2005-06-01), Gajda et al.
patent: 2005/0152819 (2005-07-01), Schmidt et al.
Cadogan, et al., “Plasticizers” in Kirk-Othmer Encyclopedia of Chemical Technology, John Wiley, 2000, available on-line Dec. 4, 2000.
Bahrmann, et. al., “Oxo Synthesis” in Ullmann's Encyclopedia of Chemical Technology, Wiley-VCH, 2005, posted on-line Jun. 15, 2000.
Stepanov et al., entitled “Interaction of Acetonitrile with Olefins and Alcohols in Zeolite H-ZSM-5: In Situ Solid-State NMR Characterization of the Reaction Products”, Chem. Eur. J. 1997, 3, No. 1, pp. 47-56.
Beckers Hubertus Joseph
Brown Stephen Harold
Godsmark John Stephen
Lim Yeo-Meng
Mathys Georges Marie Karel
Arechederra, III Leandro
Bullock In Suk
Etherton Bradley
ExxonMobil Chemical Patents Inc.
Griffis Andrew B.
LandOfFree
Lowering nitrogen-containing Lewis bases in molecular sieve... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lowering nitrogen-containing Lewis bases in molecular sieve..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lowering nitrogen-containing Lewis bases in molecular sieve... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2781373