Decoloration of bisphenol-A recycle stream with cation exchange

Details Decoloration of bisphenol-A recycle stream with cation exchange Decoloration of bisphenol-A recycle stream with cation exchange

1977-05-06

1978-08-15

Woodberry, Edward M.

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

Organic compounds

Carboxylic acid esters

C07C 3722

Patent

active

041072189

ABSTRACT:
All or part of bisphenol-A process mother liquor recycle stream is contacted with acidic cation exchange resin to remove color bodies. The acidic cation exchange resin is periodically washed and reactivated after use by a mixed phenol/water wash.

REFERENCES:
patent: 2861948 (1958-11-01), McKellar
patent: 2911363 (1959-11-01), Kissling
patent: 3049568 (1962-08-01), Apel et al.
patent: 3049569 (1962-08-01), Apel et al.
patent: 3221061 (1965-11-01), Grover et al.
patent: 3896006 (1975-07-01), Cooke
Soviet Plastics #8, 27 (1970)--"Preparation of Bisphenol With a Spirocyclic Structure Using Cation Exchange Resins", Kutsenko et al.

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