Method for producing vicinal diols or polyols
AssigneeBASF SE
InventorsAlfred Oftring, Thomas Bogenstätter, Christian Ott
Life of this patent
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Abstract
A process for preparing vicinal diols or polyols from an organic reaction mixture containing formic esters of vicinal diols or polyols, in which water is added to the reaction mixture, without addition of bases, and the formic esters are hydrolyzed in a subsequent thermal treatment, the aqueous formic acid is removed, and vicinal diols or polyols remain behind.
Claims16
A process for preparing vicinal diols or polyols comprising:
- adding water to an organic reaction mixture comprising formic esters of vicinal diols or polyols, without addition of bases,
- hydrolyzing the formic esters in a subsequent thermal treatment,
- removing the aqueous formic acid, and
- recovering the vicinal diols or polyols.
A process for preparing vicinal diols or polyols comprising:
- adding methanol to a reaction mixture containing formic esters of vicinal diols or polyols, in an amount which is at least stoichiometric relative to the formyl groups, thermally treating said reaction mixture in the absence of base, removing methyl formate, methanol and water as an azeotrope, and recovering vicinal diols or polyols.
A process for preparing vicinal diols or polyols comprising reacting olefins which have at least 10 carbon atoms with hydrogen peroxide and formic acid to give a reaction mixture containing vicinal diols and formic esters in the absence of base,
- cooling said reaction mixture to form crystalized vicinal diols and a mother liquor
- and recovering the crystallized vicinal diols mechanically.
Dependencies are inferred from the claim text.