Process for purifying d-limonene

Details Process for purifying d-limonene Process for purifying d-limonene

1992-03-25

1993-06-15

McFarlane, Anthony

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By addition of extraneous agent, e.g., solvent, etc.

585856, 585858, 585868, C07C 700, C07C 710

Patent

active

052201058

ABSTRACT:
A process is provided for the purification of d-Limonene, particularly to remove odorous impurities. The process includes the step of mixing d-Limonene with an oxidizer and separating the oxidizer from the d-Limonene. In preferred embodiments, the d-Limonene is then mixed with an acid and separated. The preferred process also includes a wash water step. The oxidizer and acid are preferably provided in aqueous solutions. The process removes the odorous impurities without the formation of an off-color in the d-Limonene.

REFERENCES:
patent: 3778485 (1973-12-01), Prochazka
patent: 3862014 (1975-01-01), Atkins et al.
patent: 4140690 (1979-02-01), Dolhyj et al.
patent: 4497838 (1985-02-01), Bonnell
patent: 4533487 (1985-08-01), Jones
patent: 4818250 (1989-04-01), Whitworth
patent: 4915707 (1990-04-01), Whitworth

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