Bis(4-hydroxyaryl)alkanes

Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing

Reexamination Certificate

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Reexamination Certificate

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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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patent: H1943 (2001-02-01), Kissinger
patent: 6384288 (2002-05-01), Kuhling
patent: 6414198 (2002-07-01), Lanze
patent: 2003/0055296 (2003-03-01), Kissinger
patent: 198 48 026 (2000-04-01), None
patent: 343349 (1980-11-01), None
patent: WO-00/39060 (2000-07-01), None

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