Esterification process

Details Esterification process Esterification process

1997-06-05

1999-02-02

Barts, Samuel

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

Organic compounds

Carboxylic acid esters

560 56, 560 67, 560180, 560204, 560231, 554170, C07C 6708

Patent

active

058667105

ABSTRACT:
A process for the preparation of an ester comprises carrying out an esterification in the presence of a catalyst comprising the reaction product of an orthoester or a condensed orthoester of titanium or zirconium, an alcohol containing at least two hydroxyl groups, a 2-hydroxy acid and a base. The process can be a direct esterification or a transesterification and can be a polyesterification. The catalyst can effectively produce esters without leading to a haze in the final product and there is a reduced amount of yellowing of polyesters in comparison to known catalysts.

REFERENCES:
patent: 3047515 (1962-07-01), Piirma
patent: 4452969 (1984-06-01), McCready
patent: 4780527 (1988-10-01), Tong et al.

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