Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2005-05-17
2009-02-10
Witherspoon, Sikarl A (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C568S596000, C568S605000
Reexamination Certificate
active
07488851
ABSTRACT:
The present invention is an industrial process for the preparation of acetals using a simulated moving bed (SMB) reactor system to accomplish the conversion of reactants (aldehyde and alcohol) and simultaneously, the separation of the reaction products (acetal and water) by selective adsorption. The SMB reactor consists of a set of interconnected columns packed with an acid solid (or mixture of acid solids: catalysts and adsorbents) effective for catalyzing the reaction between aldehydes and alcohols and for separating the reaction products by selective adsorption of at least one product. In a general embodiment, this process involves (1) feeding a mixture of aldehydes and alcohols and a desorbent which is the alcohol, to a simulated moving bed reactor; (2) reacting aldehydes and alcohols to form acetals; and (3) removing from the simulated moving bed reactor two liquid streams, a first liquid stream comprising a solution of acetal in the desorbent (raffinate), a second liquid stream comprising the water formed and the desorbent (extract).
REFERENCES:
patent: 2519540 (1950-08-01), Bramwyche et al.
patent: 4579979 (1986-04-01), Andrade et al.
patent: 5362918 (1994-11-01), Aizawa et al.
patent: 5405992 (1995-04-01), Funk et al.
patent: 5527969 (1996-06-01), Kaufhold et al.
patent: 6476239 (2002-11-01), Arumugam et al.
patent: 6518454 (2003-02-01), Arumugam et al.
M. F. Gomex, Ma C. Abello:, “Synthesis of 1, 1-Diethoxyethane Using a Continuous Flow Reactor: Catalyst Deactivation and Effect of Feed Purity and of Solvent Addition”, J. Chem. Tech. Biotech., 'Online!, vol. 79, No. 4, 2004, pp. 391-396, XP002352997, Retrieved From the Internet: URL:http://www3.interscience.wiley.com/cgibin/fulltext/107637609/PDFSTART>, 'Retrieved on Nov. 8, 2005.
Alirio E. Rodrigues, Viviana M. T. M. Sliva:, “Synthesis of Diethylacetal: Thermodynamic and Kinetic Studies”, Chem. Eng. Science, 'Online!, vol. 56, 2001, pp. 1255-1263, XP002352998, Retrieved from the Internet: URL:http://www.sciencedirect.com/science?—ob=MImg&—imagekey=B6TFK—42HFNY7-6-8K&—cdi=5229&—user=987766&—orig=browse&—coverDate—02%2F28%2F2001&—sk=999439995&view=c&wchp=dGLbVtb-zSkWA&md5=b7f6984836fae9b117613e7e57130ad3&ie-/sdarticle.pdf>, 'Retrieved on Nov. 8, 2005!.
F. Lode, M. Mazzoti, M. Morbidelli:, “A New Reaction-Separation Unit: The Simulated Moving Bead Reactor”, Chimia, 'Online!, vol. 55, No. 10, 2001, pp. 883-886, XPOO2352999, Retrieved from the Internet:, URL:http://www.chab.ethz.ch/publicrelations/publikationen/chimia/f19.pdf>, 'Retrieved on Nov. 8, 2005!.
Egídio Rodrigues Alírio
Tenedório Matos Da Silva Viviana Manuela
Sughrue & Mion, PLLC
Universidade Do Porto
Witherspoon Sikarl A
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