发明名称 PROCESS FOR PREPARING ISOMERIC TRISARYLOXYCYCLOTRIPHOSPHAZENE POLYMER PRECURSORS AND INTERMEDIATES
摘要 <p>Hexachlorocyclotriphosphazene or trischlorotrisphenoxycyclotriphosphazene is reacted with one or more of phenol, 4-nitrophenol, an alkaline metal phenolate salt, and an alkaline metal 4-nitrophenolate salt to prepare isomeric tris(4-nitrophenoxy)tris(phenoxy)cyclotriphosphazene, which can be reduced in an ethyl acetate solvent with molecular hydrogen in the presence of a platinum oxide catalyst to produce isomeric tris(4-aminophenoxy)tris(phenoxy)cyclotriphosphazene.</p>
申请公布号 WO1989012639(A1) 申请公布日期 1989.12.28
申请号 US1989002600 申请日期 1989.06.20
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