PROCESS FOR CLARIFYING ALKOXYLATED ALCOHOLS

A process for clarifying an alkoxylated product mixture produced using a calcium-based catalyst wherein the product mixture is heated to a temperature of from about 80 DEG C to about 175 DEG C to produce a filtration feed, the filtration feed being passed through a filter medium comprising material...

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Main Authors LIN, JOHN, HELLUMS, MARK, W, LECOMPTE, LINTON, RILEY, DAVID, A, ORSAK, STEVE, V, OSBORNE, CLINT, WEERSAOORIYA, UPALI
Format Patent
LanguageEnglish
French
Published 13.10.1994
Edition5
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Summary:A process for clarifying an alkoxylated product mixture produced using a calcium-based catalyst wherein the product mixture is heated to a temperature of from about 80 DEG C to about 175 DEG C to produce a filtration feed, the filtration feed being passed through a filter medium comprising material possessing polar groups to produce a clarified filtrate, the filtration feed being passed through the filter medium within about 5 days of being prepared, the filtration feed being passed through the filter medium until the desired degree of clarification is obtained, the temperature of the clarified filtrate being less than about 30 DEG C but above the pour point of the clarified filtrate. L'invention concerne un procédé de clarification d'un mélange de produits alkoxylés qui a recours à une catalyse au calcium, pendant laquelle le mélange est porté à une température comprise entre 80 et 175 °C environ, et qui produit un pré-filtrat. Ensuite, le pré-filtrat donne un filtrat clarifié après avoir traversé, dans les conditions indiquées ci-après, un support de filtration comportant un matériau doté de groupements polaires. Les conditions sont les suivantes: le pré-filtrat traverse le support filtrant dans un délai de 5 jours environ à partir de sa préparation, le pré-filtrat traverse le support filtrant jusqu'à ce que le degré de clarification souhaité soit atteint, la température du filtrat clarifié est inférieure à 30 °C environ, mais supérieure au point d'écoulement du filtrat clarifié.
Bibliography:Application Number: WO1994US01876