Method for the preparation of ultra-pure bisphenol A and the use

Details Method for the preparation of ultra-pure bisphenol A and the use Method for the preparation of ultra-pure bisphenol A and the use

1995-04-06

1997-12-09

Dees, Jose G.

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

Organic compounds

Oxygen containing

568722, 568723, C07C 3774, C07C 3912, C07C 3916

Patent

active

056962959

ABSTRACT:
The invention relates to a method for the purification by distillation of p,p-bisphenol A from the melt.
The p,p-bisphenol A melt thus obtained is highly heat-stable, stable in storage and colour-stable, is free from high-boiling components and no longer contains any surface-active or non-distillable metal, salt, acid or polymer components and no sulphur-containing components; o,p-BPA and phenol are removed and the low-boiling components are scarcely detectable.

REFERENCES:
patent: 5198591 (1993-03-01), Kiedik et al.
patent: 5269887 (1993-12-01), Jakob et al.

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