| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for obtaining tetrabromobisphenol-A of high quality in a high yield. SOLUTION: The method for producing tetrabromobisphenol-A comprises forming a reaction system where tetrabromobisphenol-A precipitates directly by the bromination of bisphenol-A in such a velocity that does not give tribromobisphenol-A as an intermediate a chance sufficient to precipitate in a significant amount. The whole precipitate produced by the process contains at least 96 wt.% tetrabromobisphenol-A. COPYRIGHT: (C)2007,JPO&INPIT
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