AN ESTERIFICATION CATALYST AND A PROCESS FOR ITS PREPARATION

摘要

The present invention relates to an esterification catalyst represented by the following formula: RYO3M wherein R indicates styrene-divinylbenzene copolymer or phenol-formaldehycle resin; Y indicates a phosphorus or sulfur atom; M indicates ions of copper, iron, cobalt, nickel, zinc, aluminium or a mixture thereof. The prsent invention also relates to a process for preparation of said catalyst. Said catalyst can be used in the esterifying reaction at a low and relatively high temperature.