Liquid l-n-menthol composition and process for preparing the sam

Details Liquid l-n-menthol composition and process for preparing the sam Liquid l-n-menthol composition and process for preparing the sam

1995-07-28

1997-09-02

Dees, Jose G.

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

Organic compounds

Oxygen containing

568828, C07C 3512

Patent

active

056634609

ABSTRACT:
A liquid l-n-menthol composition containing 30 to 80% by weight of (-)-n-isopulegol and a process for preparing a liquid l-n-menthol composition comprising mixing 20 to 70 parts by weight of liquid menthol at a temperature of not lower than 42.degree. C. as obtained in the production of l-n-menthol with 30 to 80 parts by weight of (-)-n-isopulegol are disclosed. Further, the liquid l-n-menthol composition in which part of the (-)-n-isopulegol is replaced with 3-l-n-menthoxypropane-1,2-diol and the process for preparing the same are also disclosed. The liquid l-n-menthol composition of the present invention is less expensive than conventionally available menthol and yet has an improved feeling of coolness (particularly, the bitterness is reduced) and can be used in place of conventional menthol. Besides, the liquid menthol composition of the present invention is excellent in workability and hygiene on use. Further, by replacing part of the (-)-n-isopulegol component with 3-l-n-menthoxypropane-1,2-diol, both the odor of menthol and the irritation on the skin by menthol can be softened, and the feeling of mildness can be more increased.

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Imaizumi et al., "Effects of Essential . . . Rats", Agric. Biol. Chem., vol. 49(9), pp. 2795-2796. Sep. 1985.
Chang et al., "Vapor-phase . . . Monoterpenes", Agr. Biol. Chem., vol. 34(11), pp. 1734-1738. Nov. 1970.

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