| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for sulfonating an aromatic compound, capable of obtaining a sulfonated product having stable quality in a high yield, without using an organic solvent (mainly comprising a halogenated solvent: a VOC compound), a sulfone-crosslinking inhibitor, or the like. <P>SOLUTION: In this method, the powdery aromatic compound having a repose angle of≤50°and a fluidity index of≥40 is sulfonated in a fluidized state under an SO<SB>3</SB>gas atmosphere. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
