Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1981-01-13
1983-09-20
Killos, Paul J.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
260 4585P, C07C 6976
Patent
active
044058071
ABSTRACT:
Novel tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionyloxymethyl)methane having a novel crystal structure characterized by the fact that its X-ray diffraction pattern obtained by X-ray analysis using Cu-K.sub..alpha. rays shown a sharp peak at a diffraction angle 2.theta.=10.90.degree.. The above compound can be prepared by (a) transesterifying methyl or ethyl 3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate with pentaerythritol in the presence of a compound of the formula ##STR1## wherein R.sub.1 and R.sub.2 each represent an alkyl group having 1 to 6 carbon atoms,
(b) treating the resulting tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionyloxymethyl)methane with a lower alkanol capable of forming a molecular adduct compound therewith to convert it into the corresponding molecular adduct compound, and (c) recrystallizing the molecular adduct compound from ethanol as a solvent.
Furihata Toshikazu
Hasui Hiroshi
Ohmori Masahiko
Takanashi Kazuko
Killos Paul J.
Mitsui Petrochemical Industries Ltd.
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