HARDENED PHENOLIC RESIN PARTICLE FOR CARBIDE, PROCESS FOR PRODUCING THE SAME, AND PROCESS FOR PRODUCING CARBIDE THEREFROM

摘要

Hardened phenolic resin particles for carbide exhibiting a high residual carbon ratio; a process for producing the same; and a process for producing a carbide from the hardened phenolic resin particles. A phenol is reacted with an aldehyde in the presence of not only a protective colloid but also at least one compound selected from the group consisting of a phosphoric acid, a phosphoric ester, a phosphazene compound and a specified organic phosphonic acid to thereby produce unhardened phenolic resin particles, and the unhardened phenolic resin particles are hardened. The above compound is contained in the thus obtained hardened phenolic resin particles. A desired carbide is produced by firing the hardened phenolic resin particles.