| 摘要 |
<p>Processes for preparing brominated aromatic flame retardant having a reduced content of occluded free bromine are described. The processes comprise subdividing, during bromination of an aromatic compound, solid particles that form in a bromination reaction mixture in which an excess of liquid bromine and a Lewis acid bromination catalyst are present, said subdividing taking place within the confines of said reaction mixture. Subdivision is effected by grinding, milling, or sonication.</p> |
