Esterification process with calcium hydroxybenzyl...

Details Esterification process with calcium hydroxybenzyl... Esterification process with calcium hydroxybenzyl...

C - Chemistry, Metallurgy

07

C

260/124, 260/472

C07C 67/08 (2006.01) C09F 1/04 (2006.01)

Patent

CA 1317284

ESTERIFICATION PROCESS WITH CALCIUM HYDROXYBENZYL PHOSPHONATE-PHENOL SULFIDE CATALYST SYSTEM ABSTRACT OF THE DISCLOSURE An esterfication process particularly for the preparation of rosin esters, polyesters and polymeric esters wherein aliphatic or aromatic carboxylic acids are reacted with appropriate alcohols in the presence of catalytic amounts of a mixture of a calcium bis[monoethyl- (3,5-di-tert-butyl-4-hydroxybenzyl) phosphonate] and a phenol sulfide, the presence of said mixture serving to reduce the time necessary for complete esterification and to provide esters with increased oxidation stability and better color.

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