Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2007-05-01
2007-05-01
Price, Elvis O. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C568S868000, C568S869000, C568S852000, C568S854000
Reexamination Certificate
active
11202792
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.
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Ames Tyler T.
Diffendall George F.
Gallagher F. Glenn
Seapan Mayis
Trotter Robert E.
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