Method for producing polymer particles by suspension polymerization method

Abstract

Abstract PURPOSE:To produce the titled particle free from fine particles and suitable as a dry toner for a charge development copier, by dispersing and polymerizing a monomer in an aqueous phase containing a specific water-phase polymerization inhibitor and a dispersion stabilizer, thereby preventing the emulsion polymerization in the aqueous phase. CONSTITUTION:The objective polymer is produced by (1) dissolving or dispersing (A) a dispersion stabilizer (e.g. water-soluble polymer) and (B) a polymerization inhibitor composed of V2O5 and/or cupric chloride in an aqueous phase, (2) dispersing (C) an oil-based dispersion of a monomer (preferably a vinyl compound) in the above aqueous solution, etc., and (3) carrying out the suspension polymerization of the component C. EFFECT:The washing and filtration of the product can be carried out easily in the preparation of a toner without causing the degradation of the toner characteristics by the separation of the component B.

Inventors

• 👤 Kenkichi Muto
• 👤 武藤　憲吉
• 👤 Mitsuhiko Suhama
• 👤 洲浜　光彦
• 👤 Yuji Yamashita
• 👤 裕士 山下

Bibliographic Details