Process for preparing an alkoxylated alcohol or phenol

C - Chemistry – Metallurgy – 07 – C

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C07C 41/03 (2006.01) C07C 43/11 (2006.01) C08G 65/28 (2006.01)

Patent

CA 2581870

Process for preparing an alkoxylated alcohol comprising reacting a starting monohydroxy alcohol selected from secondary alcohols, tertiary alcohols and mixtures thereof with an alkylene oxide in the presence of hydrogen fluoride and a boron-containing compound comprising at least one B-O bond. The alcohol may also be a primary monohydroxy alcohol when the boron containing compound is boric acid or boric acid anhydride or a mixture thereof, or may be a primary mono hydroxy alcohol, except a C14/C15 alcohol when reacted with ethylene oxide in the presence of HF and trimethyl borate. A phenol may be alkoxylated in the same way instead of the mono-hydroxyalcohol.

L'invention concerne un procédé destiné à préparer un alcool alcoxylé et consistant à faire réagir un monohydroxy-alcool de départ choisi parmi des alcools secondaires, des alcools tertiaires et des mélanges de ceux-ci avec un oxyde d'alkylène en présence de fluorure d'hydrogène et d'un composé contenant du bore renfermant au moins une liaison B-O. L'alcool peut également être un monohydroxy-alcool primaire lorsque le composé contenant du bore est de l'acide borique ou de l'anhydride d'acide borique ou un mélange de ceux-ci, ou peut être un monohydroxy-alcool primaire à l'exception d'un alcool C14/C15 lors d'une réaction avec de l'oxyde d'éthylène en présence de HF et de borate de triméthyle. Un phénol peut être alcoxylé de la même manière à la place du monohydroxy-alcool.

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