Process for preparing tetrakis [3-(3,5-dibutyl-4-...

Details Process for preparing tetrakis [3-(3,5-dibutyl-4-... Process for preparing tetrakis [3-(3,5-dibutyl-4-...

C - Chemistry, Metallurgy

07

C

260/478.3

C07C 69/732 (2006.01)

Patent

CA 1177092

A PROCESS FOR PREPARING TETRAKIS [3-(3,5-DIBUTYL- -4-HYDROXYPHENYL)PROPIONYLOXYMETHYL] METHANE ABSTRACT OF THE DISCLOSURE Tetrakis [3-(3,5-dibutyl-4-hydroxyphenyl)propionyloxy- methyl] methane having a high purity and excellent whitness is prepared. In this process, an ester exchange reaction between a propionic acid ester having the general formula: Image wherein Bu is an n-, sec-, iso-, or tert-butyl group and R1 is an alkyl group having 1 to 4 carbon atoms, and pentaerythritol in the presence of an alkaline catalyst is effected by adding 0.2 through 1.8 mol of water based on 1 mol of the alkaline catalyst by the substantial completion of the ester exchange reaction.

403906

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