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2 057 110

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IPC

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Application

93009969/04, 1993-02-26

(22)

Actual filing date

1993-02-26

(45)

Published

1996-03-27

(72)

Inventor

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa

PROCESS FOR DESALTING PHENOL RESIN Russian patent published in 1996 - IPC

Abstract RU 2057110 C1

FIELD: production of phenol and acetone. SUBSTANCE: phenol resin is diluted with water and disopropyl ether or isopropyl benzene in resin: ether: water weight ratio of 1:0.9:0.6, or resin: isopropyl: water weight ratio of 1:1.5:0.6, and extraction with water is carried out at 20-60 C in several steps, sulfuric acid being added at one of the intermediate steps to adjust the pH of the organic layer to not greater than 7. Aqueous layers are recycled. EFFECT: more efficient desalting process. 2 cl, 1 dwg

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RU 2 057 110 C1

Authors

Dates

1996-03-27—Published

1993-02-26—Filed

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