SILICA PARTICLE, AND METHOD FOR PRODUCING THE SILICA PARTICLE

• Main Authors: ZENITANI YUKA, KUROKI YURIE, KAJIMA YASUNOBU
• Format: Patent
• Language: English; Japanese
• Published: 22.03.2018
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

PROBLEM TO BE SOLVED: To provide silica particles suppressing both of deterioration in the fluidity and cohesion resistance of the object to be adhered.SOLUTION: Provided are silica particles having two maximum values in a number particle size distribution, in the two maximum values, the particle diameter ratio between the maximum value on the large diameter side and the maximum value on the small diameter side (small diameter side/large diameter side) is 0.02 to 0.3, also the number ratio (small diameter side/large diameter side) is 0.1 to 100, the number particle distribution index on the small diameter side is 1.0 to 1.2, also, the average circularity is 0.90 to 0.98, the number particle diameter distribution index on the large diameter side is 1.0 to 1.2, and also, the average circularity is 0.90 to 0.98.SELECTED DRAWING: None 【課題】付着対象物の流動性低下および耐凝集性低下をともに抑制するシリカ粒子の提供。【解決手段】個数粒度分布に２つの極大値を持ち、前記２つの極大値のうち、大径側の極大値と小径側の極大値との粒子径比（小径側／大径側）が０．０２以上０．３以下、かつ、個数比（小径側／大径側）が０．１以上１００以下であり、前記小径側の個数粒度分布指標が１．０以上１．２以下、かつ、平均円形度が０．９０以上０．９８以下であり、前記大径側の個数粒度分布指標が１．０以上１．２以下、かつ、平均円形度が０．９０以上０．９８以上であるシリカ粒子。【選択図】なし