Organic compounds -- part of the class 532-570 series – Organic compounds – Fatty compounds having an acid moiety which contains the...
Reexamination Certificate
2006-08-15
2006-08-15
Carr, Deborah D. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Fatty compounds having an acid moiety which contains the...
C554S191000
Reexamination Certificate
active
07091368
ABSTRACT:
The invention relates to a process for purifying lipoic acid, which comprises adding to a solution of lipoic acid at least 0.1 times the amount of an adsorbent, based on the mass of lipoic acid to be purified, and subsequently removing the adsorbent. It is possible in this way to provide racemic or nonracemic lipoic acid with an oligomer content below 1% by weight, for example from 0.1 to 1% by weight.
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Klatt Martin Jochen
Maier Ulrike
BASF - Aktiengesellschaft
Carr Deborah D.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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