Process for isomerizing the by-products of the bis-phenol...

Details Process for isomerizing the by-products of the bis-phenol... Process for isomerizing the by-products of the bis-phenol...

C - Chemistry, Metallurgy

07

C

260/617.7

C07C 37/20 (2006.01) C07C 37/00 (2006.01) C07C 39/16 (2006.01)

Patent

CA 1318687

T 4165 A B S T R A C T A PROCESS FOR ISOMERIZING THE BY-PRODUCTS OF THE BIS-PHENOL SYNTHESIS The invention relates to a process for isomerizing the by-products from the preparation of a bis-phenol obtained from the condensation of a ketone and a phenol and which comprises treating the by-products either with a catalytic amount of an acid in the presence of a free mercaptan cocatalyst or with a catalytic amount of a sulfonated cation-exchange resin having a plurality of sulfonic acid sites ionically bonded to an alkylmercaptoamine and recovering a product having a higher concentration of the desired bis-phenol having the 4,4'-dihydroxy form. T13/T4165

579204

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