COMBINED METHOD OF OBTAINING DIPHENOL A FROM CUMENE HYDROPEROXIDE Russian patent published in 2008 - IPC C07C39/16 C07C37/20 C07C39/04 C07C49/08 C07C37/08 

Abstract RU 2339609 C2

FIELD: chemistry.

SUBSTANCE: cumane hydroperoxide is decomposed in presence of catalyst from processed with acid clay in order to transform cumane hydroperoxide into mass, which after decomposition contains mainly phenol and acetone, and mass reaction after decomposition is carried out in presence of cation catalyst, composed of cation-exchange resin and mercaptane promoter or promoter in form of mercaptoalkane acid in order to transform phenol and acetone in mass after decomposition mainly into diphenol A.

EFFECT: high product output with low admixture formation without necessity of stages of intermediate purification.

10 cl, 3 dwg, 4 ex

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RU 2 339 609 C2

Authors

Kumbkhar Pramod Shankar

Tkhampi Dzhegadish

Singkh Bkharat

Fulmer Dzhon U.

Tatake Prashant Anil

Dates

2008-11-27Published

2004-04-12Filed