Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1986-05-09
1987-05-12
Evans, J. E.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568854, 568919, C07C 3120, C07C 2986, C07C 2980, C07C 2974
Patent
active
046652418
ABSTRACT:
Crude product substituted 1,3-diols obtained by aldolization and subsequent hydrogenation are treated at elevated temperatures with at least sufficient basic additives to reduce the saponification number to zero. Thereupon, the saponified product is reacted with 5 to 30% water and possibly cooled to 1.degree. to 30.degree. C. The aqueous phase is separated mechanically, and following the separation and addition of 5 to 30% water the organic phase is adjusted to a pH of 8.0 to 10.5. A second aqueous phase is removed and, thereupon, the monovalent alcohol is removed by distillation from the second organic phase. Again the pH value of the second organic phase is set at 8.0 to 10.5 and the 1,3-diol is recovered by fractionation.
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Evans J. E.
Huls Aktiengesellschaft
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