Method to treat an ion-exchanger catalyst for the process of bis

Details Method to treat an ion-exchanger catalyst for the process of bis Method to treat an ion-exchanger catalyst for the process of bis

1994-05-23

1996-03-26

Lusignan, Michael

Catalyst, solid sorbent, or support therefor: product or process

Including ion exchanging, except zeolites or product thereof

502 12, 502159, 568728, B01S 3730

Patent

active

055020160

ABSTRACT:
In the process of bisphenol-A systhesis a method for controlling the water content of the resultant cation-exchanger bed wherein an acid ion-exchanger resin in the form of a sulphonated styrene-divinylbenzene copolymer is washed with phenol and the resulted washing is contacted with a basic ion-exchanger resin. Water is removed from the washing by distillation, and the dewatered phenol is recycled to wash the cation-exchanger bed. The catalyst bed is then washed with a mixture of phenol acetone and water, and this washing is contacted with the basic ion-exchange resin and recycled to wash the cation exchanger bed so as to obtain the desired moisture content.

REFERENCES:
patent: 4820740 (1989-04-01), Li

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