Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2005-08-30
2005-08-30
Shippen, Michael L. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C558S412000, C560S065000, C568S047000, C568S645000
Reexamination Certificate
active
06936739
ABSTRACT:
This invention relates to 1,2-di(4-hydroxyaryl)tetrafluoroethanes of the general formula (I)whereinR are each, independently of one another, hydrogen, F, Cl, Br, I, CN, COOR2, C1-C4-alkyl, C1-C4-alkoxy, C1-C4-alkylthio, C1-C4-perfluoroalkyl, C1-C4-perfluoroalkoxy, C1-C4-perfluoroalkylthio, C1-C4-polyfluoroalkyl, C1-C4-polyfluoroalkoxy, or C1-C4-polyfluoroalkylthio,R2is C1-C4-alkyl, andn is an integer from 0 to 4.This invention further relates to the preparation of such compounds as well as to precursors and intermediates that can be used in their preparation.
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Baumann Käthe
Marhold Albrecht
Bayer Aktiengesellschaft
Shippen Michael L.
van Eyt Diderico
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