- Synthesis of hexakis-(4-tetrazolylphenyloxy)cyclotriphosphazene and its alkylonitrile derivative
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Tetrazoles were introduced into cyclotriphosphazenes to obtain hexakis-(4-tetrazolylphenyloxy)cyclotriphosphazene (2) in good yield (88.9%) by reacting hexakis-(4-cyanophenyloxy)cyclotriphosphazene (1) with sodium azide in N,N-dimethylformamide (DMF) in t
- Xu, Ya-Ting,Liu, Shu-Zheng,Li, Dong,Tian, Si-Cong,Qiu, Jin-Jun,Liu, Cheng-Mei
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- PHOSPHAZENE COMPOUND COMPRISING CYANO GROUP, PREPARATION METHOD AND USES THEREOF
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The present invention relates to a phosphazene compound comprising cyano group having a molecular structure of Formula (I); wherein, Y and Y′ are independently selected from organic groups; M1 and M2 are independently selected from phosphazene groups, and M1 contains m1 phosphorus atoms, and M2 contains m2 phosphorus atoms; X1, X1′, X2, X3 and X4 are independently selected from any one of the sixth main-group elements; R and R′ are independently selected from divalent organic groups; a is an integer greater than or equal to 0; b is an integer greater than or equal to 1; and c is an integer greater than or equal to 0; and a+b=2m1, d+2=2m2. The present invention achieves a synergistic effect with P and N of phosphazene group by introducing cyano group to the phosphazene group, and thus improves thermal stability and flame retardancy of the phosphazene compound, and the compatibility thereof with other components is excellent. The resin composition comprising the phosphazene compound of the present invention has good heat resistance, water resistance, adhesive properties and mechanical properties, and thus the application thereof is widened.
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Paragraph 0050; 0051; 0052; 0053
(2017/08/08)
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- Synthesis and characterization of alkyl- and acyl-substituted oxime-phosphazenes
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Two oxime-cyclophosphazenes were prepared from the hexakis(4-formylphenoxy) cyclotriphosphazene (2) and hexakis(4-acetylphenoxy)cyclotriphosphazene (8). The reactions of these oximes with ethyl bromide, allyl bromide, propanoyl chloride, and acriloyl chlo
- Cil, Erol,Arslan, Mustafa,Goerguelue, Ahmet Orhan
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p. 2039 - 2045
(2007/10/03)
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