| abstract |
The present invention relates to a structure of formula (I) wherein Y and Y ′ are each independently selected from an organic group, and M 1 and M 2 are each independently selected from a phosphazene group. M 1 contains m 1 phosphorus atoms, M 2 contains m 2 phosphorus atoms, and X 1 , X 1 ′, X 2 , X 3 and X 4 are each independently a group 16 element. R and R ′ are each independently selected from suborganic groups, a is an integer of 0 or more, b is an integer of 1 or more, and c is an integer of 0 or more. And a + b = 2m 1 and d + 2 = 2m 2 are satisfied.) The present invention relates to a phosphazene compound containing a cyano group. In the present invention, by introducing a cyano group into a phosphazene group, a synergistic effect with P and N in the phosphazene group is realized, and the thermal stability and flame retardancy are improved. Since the resin composition containing the phosphazene compound described in the present invention has excellent heat resistance, water resistance, adhesiveness and mechanical properties, its application range is expanded. [Selection figure] None |