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In this paper, firstly 2,2'-Biphenol was adopted for conducting partial blocking of phosphonitrilic chloride trimer(HCCP) to prepare T1, then the p-aminophenol and salicylide were added for dehydration, preparing the schiff base which contains two phenolic hydroxyl structures, and then NaBH4 was used for the reduction of C=N double bond, after that, adding paraformaldehyde into the 1,4-dioxane system,so that the polybenzoxazines C3 of phenolic hydroxyl group can be synthesized; Finally, in the 1,4-dioxane system,the nucleophilic substitution of T1 and C3 occurred, producing the asymmetric cyclotriphosphazene-benzoxazine monomer. |
2Â¥2015-06-08 17:42:47













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