| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for obtaining crystal of a bisphenol compound with a large particle size and a narrow particle size distribution in the crystallization step. SOLUTION: The method for crystallizing the bisphenol compound comprises the following steps: The bisphenol compound dissolved in a liquid is agitated in a crystallization tank equipped with an agitating blade, and under agitation, temperature is made to fall, thus accomplishing the objective crystallization; wherein the tip velocity of the agitating blade is 8 m/s or less. COPYRIGHT: (C)2009,JPO&INPIT
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