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    • 6. 发明申请
    • RECOVERY OF POLYPHOSPHAZENE POLYACIDS OR ACID SALTS THEREOF
    • 多磷酸聚合物或其酸盐的回收
    • WO98039386A1
    • 1998-09-11
    • PCT/US1998/003658
    • 1998-02-25
    • C08G79/02C08L43/02
    • C08G79/025
    • A process for recovering a polyphosphazene polyacid or acid salt obtained by hydrolyzing a polyphosphazene having at least one ester moiety present in at least one substituent group. The polyphosphazene having at least one ester moiety present in at least one substituent group is hydrolyzed with a base in an organic solvent in the presence of water. The water is present in an amount effective to induce the agglomeration of particles of the synthesized polyphosphazene polyacid or acid salt, which enhances the separation of the polyphosphazene polyacid or acid salt from a polymer-free liquid organic phase. The polymer-free liquid organic phase then is separated from the polyphosphazene acid or acid salt, whereby the polyphosphazene acid or acid salt is recovered.
    • 回收通过水解具有至少一个取代基中存在的至少一个酯部分的聚磷腈获得的聚磷腈多酸或酸盐的方法。 存在于至少一个取代基中的至少一个酯部分的聚磷腈在水的存在下在有机溶剂中用碱水解。 水以有效诱导合成的聚磷腈多酸或酸盐的颗粒聚集的量存在,这增强了聚磷腈多元酸或酸性盐从无聚合物的液体有机相的分离。 然后将无聚合物的液体有机相与聚磷腈酸或酸式盐分离,由此回收聚磷腈酸或酸性盐。