Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2005-07-19
2005-07-19
Shippen, Michael L. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
Reexamination Certificate
active
06919487
ABSTRACT:
The present application relates to a process for producing high-purity bis(4-hydroxyaryl)alkanes from adducts of bis(4-hydroxyaryl)alkanes and aromatic hydroxy compounds, which are obtained by acid-catalysed reaction of the aromatic hydroxy compounds with ketones.
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Bödiger Michael
Heydenreich Frieder
Lanze Rolf
Neumann Rainer
Prein Michael
Bayer Aktiengesellschaft
Gil Joseph C.
Preis Aron
Shippen Michael L.
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