| 摘要 |
PROBLEM TO BE SOLVED: To provide phenothiazine, a phenothiazine analog, or a derivative (a phenothiazine material) in the form of prills generally of a spherical shape containing a very low level of a fine powder and to provide a method of forming a phenothiazine material in a prill form having a generally spherical shape. SOLUTION: The phenothiazine prill product preferably contains 99.6% phenothiazine. The method for manufacturing solid phenothiazine material in a prill form comprises breaking a stream of a molten phenothiazine material into a plurality of evenly sized droplets. The droplets are maintained in an inert gas atmosphere until they are cooled below 140°C. COPYRIGHT: (C)2007,JPO&INPIT
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