Title:
Canal-ized spherical polyalkylsilsesquioxane particulates, an external additive for toners, dry toner for electro-photography, and a manufacturing method of canal-ized spherical polyalkylsilsesquioxane particulates
Document Type and Number:
Japanese Patent JP6116711
Kind Code:
B2
Abstract:
Provided are a polyalkylsilsesquioxane fine particle having hydrophobicity and having a small particle diameter, an external additive for toner and a dry toner for electrophotography each using the same, and a method of manufacturing a hydrophobized spherical polyalkylsilsesquioxane fine particle. The hydrophobized spherical polyalkylsilsesquioxane fine particle has a mass-based median diameter in a centrifugal sedimentation method within the range of from 0.05 µm to 0.3 ¼m. The fine particle is produced through, for example, at least a process involving: mixing a raw material solution prepared using an alkyltrialkoxysilane with an alkaline aqueous medium to obtain a polycondensation reaction liquid; mixing the polycondensation reaction liquid with an aqueous solution to obtain a fine particle dispersion liquid; and blending a hydrophobizing agent in the fine particle dispersion liquid.
Inventors:
Kenichi Ishizu
Yohei Konshige
Komatsubara Gallbladder
Yohei Konshige
Komatsubara Gallbladder
Application Number:
JP2015557802A
Publication Date:
April 19, 2017
Filing Date:
January 07, 2015
Export Citation:
Assignee:
Tokuyama Corporation
International Classes:
C08G77/04; C08G77/06; C08J3/07; G03G9/08
Domestic Patent References:
| JP1185367A |
Attorney, Agent or Firm:
Iat International Patent Business Corporation