Process for production of purified alcohols

Details Process for production of purified alcohols Process for production of purified alcohols

2005-03-14

2010-02-16

Price, Elvis O (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C568S883000

Reexamination Certificate

active

07663006

ABSTRACT:
A process for producing a purified alcohol giving satisfactory results in a sulfuric acid coloring test is provided.A process for producing a purified alcohol which includes the following steps:a condensation step in which an aldehyde is subjected to aldol condensation and dehydration to obtain the corresponding condensate,a hydrogenation step in which the condensate is hydrogenated to obtain a crude alcohol, anda purification step in which the crude alcohol is distilled to obtain a purified alcohol,characterized in that the crude alcohol in which the concentration of one or more compounds having an oxygen-containing heterocycle having a carbon-carbon double bond in the ring is 200 weight ppm or lower is fed to the purification step. Specifically, the aldehyde is normal butyraldehyde, the condensate is 2-ethylhexenal, and the alcohol is 2-ethylhexanol.

REFERENCES:
patent: 5475161 (1995-12-01), Horn et al.
patent: 2 124839 (1990-05-01), None
patent: 3 120234 (1991-05-01), None

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