COMPOSITE PARTICLE FOR INK, INK COMPOSITION AND METHOD FOR PRODUCING THE SAME

PROBLEM TO BE SOLVED: To provide composite particles for ink that prevent dispersant from coming off them and have excellent dispersion stability, and an ink composition comprising the particles.SOLUTION: The composite particle for ink is a composite particle that comprises a polymer (A) and a pigme...

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Bibliographische Detailangaben
Hauptverfasser:	MOTOGOSHI YOSHIKO, NEBUYA OSAMU, YOSHII KANAME, YAMASHITA TAIJI, SHINOHARA SHUICHI, KANEKO HISAFUMI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES PREPARATION OF CARBON BLACK TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide composite particles for ink that prevent dispersant from coming off them and have excellent dispersion stability, and an ink composition comprising the particles.SOLUTION: The composite particle for ink is a composite particle that comprises a polymer (A) and a pigment particle (B), where the pigment particle (B) has its surface coated with a coating layer comprising the polymer (A), an impregnation layer impregnated with the polymer (A) is provided from the surface to the inside of the pigment particle (B), and an average thickness of the impregnation layer is 0.1-50% of a volume average particle diameter of the composite particle.SELECTED DRAWING: None 【課題】分散剤の脱落がなく分散安定性に優れるインク用複合粒子、該粒子を用いたインク組成物を提供する。【解決手段】重合体（Ａ）と顔料粒子（Ｂ）を含む複合粒子であって、前記顔料粒子（Ｂ）の表面が前記重合体（Ａ）を含有する被覆層で被覆され、顔料粒子（Ｂ）の表面から内側に前記重合体（Ａ）が含浸した含浸層を有し、前記含浸層の平均厚みが複合粒子の体積平均粒径の０．１〜５０％であるインク用複合粒子。【選択図】なし