| 摘要 |
PROBLEM TO BE SOLVED: To provide a granulation method for a polyoxyethylene ether (A) of bisphenol A having a small amount of impurities, and having excellent productivity and handleability because of a narrow particle distribution, non-occurrence of fine powder, and a nearly truly spherical shape. SOLUTION: In this production method for the granular polyoxyethylene ether (A) of bisphenol A, shear force is applied under presence of the polyoxyethylene ether (A) of bisphenol A in a fused state, and water and/or an organic solvent (B) to form a droplet of (A), and it is cooled to perform granulation. COPYRIGHT: (C)2009,JPO&INPIT
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