Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2006-08-29
2006-08-29
Price, Elvis O. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C568S852000, C568S854000, C568S869000, C435S132000, C435S155000, C435S157000, C435S158000, C435S159000
Reexamination Certificate
active
07098368
ABSTRACT:
The invention discloses a hydrogenation process for removing impurities and controlling acid for use in downstream processing of biochemically-derived 1,3-propanediol. Preferably, the biochemically-derived 1,3-propanediol, before the contacting, has an initial color and, after the contracting, has a color that is lower than the initial color.
REFERENCES:
patent: 3326985 (1967-06-01), Mason
patent: 5527973 (1996-06-01), Kelsey
patent: 5633362 (1997-05-01), Nagarajan et al.
patent: 5686276 (1997-11-01), Laffend et al.
patent: 5821092 (1998-10-01), Nagarajan et al.
patent: 6235948 (2001-05-01), Sunkara et al.
patent: 2002/0007043 (2002-01-01), Sunkara et al.
patent: 2002/0010374 (2002-01-01), Sunkara et al.
patent: 2003/0082756 (2003-05-01), Laffend et al.
patent: 1 025 852 (1958-03-01), None
patent: 3 917 645 (1989-12-01), None
patent: 657529 (1995-06-01), None
patent: 0 983 985 (2000-03-01), None
patent: WO 01/47850 (2001-07-01), None
S. M. Ghoreishi et al., Characterization and Reduction of Chromophores in Pulp Mill Effiuents, Sci. Iran., vol. 4(3):131-138, 1997.
H. O. House, Modern Synthetic Reactions—Catalytic Hydrogenation and Dehydrogenation, Second ed., W.A. Benjamin: Menlo Park, CA, pp. 1-15, 1972.
Ames Tyler T.
Diffendall George F.
Gallagher F. Glenn
Seapan Mayis
Trotter Robert E.
E. I. du Pont de Nemours and Company
Price Elvis O.
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