Process for the preparation of bis(hydroxyaryl) compounds

Details Process for the preparation of bis(hydroxyaryl) compounds Process for the preparation of bis(hydroxyaryl) compounds

C - Chemistry, Metallurgy

07

C

260/617.6

C07C 37/11 (2006.01) C07D 317/12 (2006.01)

Patent

CA 1049564

Abstract The present process relates to the preparation of bis(hydroxy- aryl) compounds such as Bisphenol A (diphenylolpropane) and Bisphenol F by reacting phenol in the presence of an acidic condensation catalyst with an acetal and/or a ketal such as 2,2-dimethyl 1,3 -dioxolane. The process is advantageous in that the use of a sulphidic co-catalyst is no longer required. Also corrosion problem are substantially dimished since ethylene glycol is formed as a byproduct in stead of water. The bis(hydroxyaryl)compounds are valuable starting materials for the production of resins, plastics, paints and varnishes.

200733

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