Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1993-08-09
1994-04-12
Lone, Werren B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568722, 568723, 568728, C07C 3916
Patent
active
053027744
ABSTRACT:
The invention relates to a process for the production of bisphenols from acetone and phenols in the presence of sulfonic acid ion exchanger resins modified with alkyl-SH groups, in which 0.6 to 5% by weight H.sub.2 O is added to the mixture of phenol and acetone before the reaction.
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patent: 3634341 (1972-01-01), Gammill et al.
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patent: 4847433 (1989-07-01), Kissinger
patent: 4859803 (1989-08-01), Shaw
patent: 5210328 (1993-05-01), Freitag et al.
Berg Klaus
Buysch Hans-Josef
Eitel Alfred
Fennhoff Gerhard
Immel Otto
Bayer Aktiengesellschaft
Lone Werren B.
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