Method for preparing high purity indane bisphenols

Details Method for preparing high purity indane bisphenols Method for preparing high purity indane bisphenols

1998-03-31

1999-11-30

Shippen, Michael L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 3912

Patent

active

059945966

ABSTRACT:
A process for preparing high purity indane bisphenols in high yield is disclosed. The method comprises heating a bisphenol in the presence of Montmorillonite K10 clay, which catalyzes the synthesis reaction more rapidly and effectively than other clays previously disclosed. The high purity (.gtoreq.97%) of the synthesized indane bisphenol is obtained by two successive selective recrystallizations, the first from an organic solvent, and the second from an acetic acid solution. The high purity indane bisphenols produced may be made substantially pure (>99%) by employing a purification process which includes at least one selective recrystallization from a 45%-80% by volume aqueous acetic acid solution. Alternatively, substantially pure indane bisphenol may be obtained by recrystallization from a solution of 89-93% by volume toluene and 7-11% by volume n-propanol, or by a combination of recrystallizations from toluene
-propanol and from aqueous acetic acid. Substantially pure indane bisphenols, such as 5-hydroxy-3-(4-hydroxyphenyl)-1,1,3-trimethylindane, are suitable for conversion to high molecular weight polymers.

REFERENCES:
patent: 2754285 (1956-07-01), Petropoulos
patent: 2819249 (1958-01-01), Petropoulos et al.
patent: 3288864 (1966-11-01), Farnham
patent: 4334106 (1982-06-01), Dai
patent: 4701566 (1987-10-01), Faler et al.
patent: 4791234 (1988-12-01), Faler et al.

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