| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of L-menthol capable of reducing expense for equipment to the possible lowest and increasing throughput by performing continuously as much as possible in an industrial scale, and to provide its molded article.SOLUTION: A manufacturing method of solid, especially flaky L-menthol is conducted by bringing molten L-menthol with 2 into contact with separated cooled surfaces. In the manufacturing method of menthol, the solidifying L-menthol molten product and the cooled surface has a surface parallel arrangement having 0.2 to 3 mm of distance from each other, each independently having a range of 0 to 35°C, and a contact time period between L-menthol and the cooled surface is 10 to 300 seconds. L-menthol exists as a solid, as at least up to 80 wt.% of transformation at contact with the cooled surface. |
