Process for preparing tetrakis [3-(3,5-dibutyl-4-hydroxyphenyl)p

Details Process for preparing tetrakis [3-(3,5-dibutyl-4-hydroxyphenyl)p Process for preparing tetrakis [3-(3,5-dibutyl-4-hydroxyphenyl)p

1982-05-25

1985-10-15

Killos, Paul J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

562478, C07C 6976

Patent

active

045475857

ABSTRACT:
Tetrakis [3-(3,5-dibutyl-4-hydroxyphenyl)propionyloxymethyl] methane having a high purity and excellent whiteness is prepared. In this process, an ester exchange reaction between a propionic acid ester having the general formula: ##STR1## wherein Bu is an n-, sec-, iso-, or tert-butyl group and R.sup.1 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.

REFERENCES:
patent: 4085132 (1978-04-01), Park et al.

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