- METHOD FOR PRODUCING GLYCOL FROM OXIRANE COMPOUND
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The objective of the present invention is to provide a method for the highly selective production of dipropylene glycol containing 1,1'-oxybis-2-propanol in a proportion of 0.10 to 0.70 and/or tripropylene glycol containing 1,1'-[(1-methyl-1,2-ethanediyl)bis(oxy)]bis-2-propanol in a proportion of 0.10 to 0.70. The present invention is a method for producing dipropylene glycol containing 1,1'-oxybis-2-propanol in a proportion of 0.10 to 0.70 and/or tripropylene glycol containing 1,1'-[(1-methyl-1,2-ethanediyl)bis(oxy)]bis-2-propanol in a proportion of 0.10 to 0.70, the method comprising a reaction step of making a reactant comprising propylene oxide and water react in the presence of a catalyst, wherein the catalyst comprises at least one element selected from the group consisting of vanadium, niobium, and tantalum, and the Hammett acidity function (H) of the catalyst satisfies H ≤ 9.3.
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Paragraph 0061; 0066; 0076
(2014/10/29)
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- Process for producing a deprotected alkoxylated polyol
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An improved process for the hydrolysis and purification of an alkoxylated polyol containing a ketal protective functionality, and which may be employed to prepare reduced calorie esterified alkoxylated polyol fat mimetics useful in cooking and in food compositions, comprises contacting an aqueous mixture of the protected alkoxylated polyol with an acid to hydrolyse and thus deprotect the alkoxylated polyol,adding a base to neutralise the acid and cause the mixture to form a first phase containing the deprotected alkoxylated polyol and a second phase containing predominantly water, and separating the phases. The protected alkoxylated polyol may be formed by alkoxylating a protected polyol. The deprotected alkoxylated polyol may subsequently be esterified.
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