Process for recovering an adduct of a bis(4-hydroxyaryl)alkane and a phenolic compound
AssigneeDow Global Technologies LLC
InventorsEmil Patrascu, Johann-Wilhelm Frey, Manfred Hagel
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Abstract
A process for recovering a solid adduct of a bis(4-hydroxyaryl)alkane and a phenolic compound from a suspension comprising the addict is disclosed. The process comprises the steps of a) supplying the suspension to a rotary filter, b) filtering the supplied suspension in the rotary filter to retain adduct as an adduct cake, c) pre-drying the adduct cake with an inert gas, d) washing the pre-dried adduct cake, e) optionally drying the washed adduct cake, and f) discharging the washed adduct cake from the rotary filter.
Claims22
A process for recovering a solid adduct of a bis(4-hydroxyaryl)alkane and a phenolic compound from a suspension comprising the adduct, wherein the process comprises the steps of
- a) supplying the suspension to a rotary filter,
- b) filtering the supplied suspension in the rotary filter to retain adduct as an adduct cake,
- c) pre-drying the adduct cake with an inert gas,
- d) washing the pre-dried adduct cake,
- e) with or without drying of the washed adduct cake, and
- f) discharging the washed adduct cake from the rotary filter.
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Dependencies are inferred from the claim text.