Method of manufacturing alkylene oxide adducts of an aliphatic a

Details Method of manufacturing alkylene oxide adducts of an aliphatic a Method of manufacturing alkylene oxide adducts of an aliphatic a

1972-07-14

1976-01-13

Mars, Howard T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260639B, 260643A, 260643E, 260643B, C07C 4102

Patent

active

039325318

ABSTRACT:
An improvement is provided in the manufacture of alkylene oxide adducts of an aliphatic alcohol in which the reaction mixture, comprising the alkylene oxide adduct, unreacted alcohol, acid catalyst residue, carbonyl compounds and hydrocarbons, is treated to remove unreacted alcohol for recycle to the adduct formation step. To prevent the build-up in the system of carbonyl compounds and hydrocarbons which are not easily distillable from the recycle alcohol because of their respective boiling points, at least a portion of the recycle alcohol is esterified with boric acid, the esterification mixture is subjected to distillation to remove volatile portions, and the borate ester thus obtained is hydrolyzed to recover the alcohol which is recycled to the adduct formation step.

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