| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve a phosphazene compound which can increase the flame retardancy of a resin molding, and can give low electric characteristics of the resin molding, particularly permittivity (ε) and dielectric loss tangent (tan δ), and high heat resistance. <P>SOLUTION: A method for producing an ethenyl phenoxy group-containing cyclic phosphazene compound represented by formula (1) includes a step of conducting a carbonyl olefination reaction of a formyl phenoxy group-containing cyclic phosphazene compound. In the formula (1), n represents an integer of 1-6; at least one A is an ethenyl phenoxy group represented by formula (2) and other As are aryloxy groups. <P>COPYRIGHT: (C)2013,JPO&INPIT |
