发明授权
EP0025850B1 Process for the polymerization of cyclic polyhalophosphazenes using a catalyst composition of boron trihalide and oxygenated phosphorus compounds 失效
使用三氧化二硼和氧化磷化合物的催化剂组合物使环状聚氨酯的聚合方法

Process for the polymerization of cyclic polyhalophosphazenes using a catalyst composition of boron trihalide and oxygenated phosphorus compounds
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