Purification of diphenyl phthalates

Details Purification of diphenyl phthalates Purification of diphenyl phthalates

C - Chemistry, Metallurgy

07

C

202/93

C07C 69/80 (2006.01) C07C 67/48 (2006.01) C07C 67/52 (2006.01) C07C 67/54 (2006.01) C07C 69/82 (2006.01)

Patent

CA 1309688

ABSTRACT Color properties of crude phenolic esters of aromatic dicarboxylic acids are improved by comminuting the ester to a finely divided particle size in the presence of an aqueous or alcoholic alkali solution and thereafter distilling the esters to obtain phenolic esters of reduced color.

573706

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