| 摘要 |
PURPOSE:To obtain a toner giving superior image quality, by dissolving a specified org. titanate into a polymerizable monomer or dispersing carbon black having adsorbed this titanate at the time of dispersing carbon black into a polymerizable monomer. CONSTITUTION:Carbon black having adsorbed an org. titanate on the surface is obtained by dissolving said org. titanium compd. represented by the formula (R1 is 1-8C straight or branched alkylene, and R2 is 1-20C straight or branched alkyl) in toluene, immersing carbon black into this soln., and evaporating toluene. This carbon black is dispersed into a polymerizable monomer, and this is suspension polymerized, or the org. titanate is dissolved in the monomer, and carbon black is dispersed into the monomer, and then, suspension polymn. is carried out. As a result, and obtained toner having carbon black uniformly dispersed can give a sharp image. |
