SILICA PARTICLES, AND METHOD FOR PRODUCING THE SAME

Title:

SILICA PARTICLES, AND METHOD FOR PRODUCING THE SAME

Document Type and Number:

Japanese Patent JP2012006789

Kind Code:

A

Abstract:

To provide silica particles which are not easily embedded in an adhering object in comparison to the case in which the average particle diameter of primary particles is not in a range of 100 to 500 nm, the particle size distribution index of the primary particles is not in a range of 1.40 to 1.80, and the average circularity of the primary particles is not in a range of 0.5 to 0.85, and 95% or more, by number of particles, of the primary particles having an average particle diameter in a range of 100 to 500 nm, a particle size distribution index in a range of 1.40 to 1.80, and an average circularity in a range of 0.5 to 0.85 do not satisfy formula (1) with respect to the circularity and particle diameter (nm).

In the silica particles, 95% or more, by number of particles, of the primary particles having an average particle diameter in a range of 100 to 500 nm, a particle size distribution index in a range of 1.40 to 1.80, and an average circularity in a range of 0.5 to 0.85 satisfy the formula (1) with respect to the circularity and particle diameter (nm): circularity=α×particle diameter/1,000+β (1) (-2.5≤α≤-0.9, 0.8≤β≤1.2).

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Inventors:

YOSHIKAWA HIDEAKI
ZENIYA YUKA
OKUNO HIROYOSHI
NOZAKI SHUNSUKE
KAWASHIMA SHINICHIRO
TAKEUCHI SAKAE

Application Number:

JP2010143828A

Publication Date:

January 12, 2012

Filing Date:

June 24, 2010

Export Citation:

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Assignee:

FUJI XEROX CO LTD

International Classes:

C01B33/18

Domestic Patent References:

JPS6252119A	1987-03-06
JPS63310714A	1988-12-19
JPH06254383A	1994-09-13
JPH07277725A	1995-10-24
JPH09202612A	1997-08-05
JP2003165718A	2003-06-10
JP2007022827A	2007-02-01
JP2008285406A	2008-11-27
JP2011185998A	2011-09-22
JPH054812A	1993-01-14
JPH04238807A	1992-08-26
JPH0812305A	1996-01-16
JPS6252119A	1987-03-06
JPS63310714A	1988-12-19
JPH06254383A	1994-09-13
JPH07277725A	1995-10-24
JPH09202612A	1997-08-05
JP2003165718A	2003-06-10
JP2007022827A	2007-02-01
JP2008285406A	2008-11-27
JP2011185998A	2011-09-22

Foreign References:

WO2010052945A1

2010-05-14

Other References:

JPN6013050934; Ｋｙｕｎｇ-Ｓｏｏ　ＫＩＭ　ｅｔ　ａｌ．: 'Ｉｎｆｌｕｅｎｃｅ　ｏｆ　ｒｅａｃｔｉｏｎ　ｃｏｎｄｉｔｉｏｎｓ　ｏｎ　ｓｏｌ-ｐｒｅｃｉｐｉｔａｔｉｏｎ　ｐｒｏｃｅｓｓ　ｐｒｏｄｕｃｉｎｇ　ｓｉｌｉｃｏｎ　ｏｘｉｄｅ　ｐａｒｔｉｃｌｅｓ' Ｃｅｒａｍｉｃｓ　Ｉｎｔｅｒｎａｔｉｏｎａｌ２００２，　Ｖｏｌ．２８, ｐｐ．１８７-１９４
JPN6013050937; Ｘｉａｏ-Ｄｏｎｇ　ＷＡＮＧ　ｅｔ　ａｌ．: 'Ｐｒｅｐａｒａｔｉｏｎ　ｏｆ　ｓｐｈｅｒｉｃａｌ　ｓｉｌｉｃａ　ｐａｒｔｉｃｌｅｓ　ｂｙ　Ｓｔｏｂｅｒ　ｐｒｏｃｅｓｓ　ｗｉｔｈ　ｈｉｇｈ　ｃｏｎｃｅｎｔｒａｔｉｏｎ　ｏｆ　ｔｅｔｒａ-ｅｔｈｙｌ-ｏ' Ｊｏｕｒｎａｌ　ｏｆ　Ｃｏｌｌｏｉｄ　ａｎｄ　Ｉｎｔｅｒｆａｃｅ　ＳｃｉｅｎｃｅＡｖａｉｌａｂｌｅ　ｏｎｌｉｎｅ　１８　Ｓｅｐｔｅｍｂｅｒ　２００９，Ｖｏ, ｐｐ．２３-２９
JPN6013050940; Ｄａｉｓｕｋｅ　ＮＡＧＡＯ　ｅｔ　ａｌ．: 'Ｐａｒｔｉｃｌｅ　ｆｏｒｍａｔｉｏｎ　ｉｎ　ｔｈｅ　ｈｙｄｒｏｌｙｓｉｓ　ｏｆ　ｔｅｔｒａｅｔｈｙｌ　ｏｒｔｈｏｓｉｌｉｃａｔｅ　ｉｎ　ｐＨ　ｂｕｆｆｅｒ　ｓｏｌｕｔｉｏｎ' Ｊｏｕｒｎａｌ　ｏｆ　Ｃｏｌｌｏｉｄ　ａｎｄ　Ｉｎｔｅｒｆａｃｅ　Ｓｃｉｅｎｃｅ２００４，　Ｖｏｌ．２７９, ｐｐ．１４３-１４９

Attorney, Agent or Firm:

Atsushi Nakajima
Kato Kazunori
Hiroshi Fukuda

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