Organic compounds -- part of the class 532-570 series – Organic compounds – Acyclic carbon bonded directly to three benzene rings or to...
Patent
1995-09-29
1998-05-26
Shaver, Paul F.
Organic compounds -- part of the class 532-570 series
Organic compounds
Acyclic carbon bonded directly to three benzene rings or to...
525462, 528198, 528371, C09B 1104
Patent
active
057567816
ABSTRACT:
An improved method for the preparation of tris(4-hydroxyphenyl) compounds is provided. In particular, an improved method for preparing 1, 1,1-tris(4'-hydroxyphenyl)ethane is provided which comprises heating a mixture comprising phenol and 4-hydroxy acetophenone in the presence of effective amounts of an ion exchange catalyst and a mercaptan as a copromoter such that the resulting 1,1,1-tris(4'-hydroxyphenyl)ethane is substantially free of various reaction impurities.
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Kissinger Gaylord Michael
Mendiratta Ashok Kumar
Sybert Paul Dean
General Electric Company
Shaver Paul F.
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