Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Treating with a liquid or treating in a liquid phase,...
Reexamination Certificate
2007-02-27
2007-02-27
Page, Thurman K. (Department: 1621)
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Treating with a liquid or treating in a liquid phase,...
C560S191000
Reexamination Certificate
active
10523284
ABSTRACT:
Process for removal of the esterification catalyst by separation from a crude plasticizer ester obtained by reacting a dicarboxylic acid with C8–C13alcohols, by treating the crude ester with an aqueous alkali solution in the range from 10 to 100° C. and then separating the aqueous alkaline phase comprising the hydrolyzed esterification catalyst by gravitational phase separation, by treating the crude ester, prior to or during the phase separation, with a salt of a di- or polyvalent metal, or with a mixture of these salts.
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Disteldorf Walter
Golfier Günther
Peters Jarren
Schwirten Kurt
BASF - Aktiengesellschaft
Connolly Bove & Lodge & Hutz LLP
Page Thurman K.
Puttlitz Karl J.
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