MESOPOROUS SILICA PARTICLE OF CORE-SHELL STRUCTURE

Title:

MESOPOROUS SILICA PARTICLE OF CORE-SHELL STRUCTURE

Document Type and Number:

Japanese Patent JP2009263171

Kind Code:

A

Abstract:

To provide mesoporous silica particles of core-shell structure of which the shell comprises a silicon compound having an organic group and has mesopore structure having an average pore diameter of 8 nm, and a method for efficiently producing the same.

[1] In the mesoporous silica particles of core-shell structure of which the shell has mesopore structure, the shell has an average thickness of 5-700 nm, the particles have an average particle diameter of 0.05-10 m, the shell comprises a silicon compound having an organic group and includes a water-insoluble material (a) within the same, and the mesopore has an average pore diameter of 1-8 nm. [2] The method for producing such mesoporous silica particles of core-shell structure comprises: preparing a dispersion containing a water-insoluble material, a quaternary ammonium salt and a silica source having an organic group and forming a silanol compound upon hydrolysis; stirring the dispersion at 10-100C to deposit a complex including the quaternary ammonium salt and silica; and removing the quaternary ammonium salt from the complex.

Inventors:

YAMASHITA RISAKO
YANO AKIHIRO
HOSOKAWA KOJI

Application Number:

JP2008115172A

Publication Date:

November 12, 2009

Filing Date:

April 25, 2008

Export Citation:

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Assignee:

KAO CORP

International Classes:

C01B37/00; C01B33/18; C08K7/26; C08L101/00

Domestic Patent References:

JPH1072212A	1998-03-17
JP2000176277A	2000-06-27
JP2007197289A	2007-08-09
JPH06142491A	1994-05-24
JP2008174435A	2008-07-31
JP2008110905A	2008-05-15
JP2006347849A	2006-12-28
JPH1072212A	1998-03-17
JP2000176277A	2000-06-27
JP2007197289A	2007-08-09
JPH06142491A	1994-05-24
JP2008174435A	2008-07-31
JP2008110905A	2008-05-15

Other References:

JPN6012063952; Ｇ．ＺＨＵ　ｅｔ　ａｌ．: 'Ｐｏｌｙｓｔｙｒｅｎｅ　Ｂｅａｄ-Ａｓｓｉｓｔｅｄ　Ｓｅｌｆ-Ａｓｓｅｍｂｌｙ　ｏｆ　Ｍｉｃｒｏｓｔｒｕｃｔｕｒｅｄ　Ｓｉｌｉｃａ　Ｈｏｌｌｏｗ　Ｓｐｈｅｒｅｓ　ｉｎ　Ｈｉｇｈｌｙ　Ａｌｋａｌｉｎｅ' Ｊ．Ａｍ．Ｃｈｅｍ．Ｓｏｃ．Ｖｏｌ．１２３．　Ｎｏ．３１, 20010808, Ｐａｇｅｓ７７２３-７７２４, Ａｍｅｒｉｃａｎ　Ｃｈｅｍｉｃａｌ　Ｓｏｃｉｅｔｙ
JPN6012063953; Ｙ．ＺＨＵ　ｅｔ　ａｌ．: 'Ａ　ｆａｃｉｌｅ　ｍｅｔｈｏｄ　ｔｏ　ｓｙｎｔｈｅｓｉｚｅ　ｎｏｖｅｌ　ｈｏｌｌｏｗ　ｍｅｓｏｐｏｒｏｕｓ　ｓｉｌｉｃａ　ｓｐｈｅｒｅｓ　ａｎｄ　ａｄｖａｎｃｅｄ　ｓｔｏｒａｇｅ　ｐｒｏｐｅｒｔｙ' Ｍｉｃｒｏｐｏｒｏｕｓ　ａｎｄ　Ｍｅｓｏｐｏｒｏｕｓ　ＭａｔｅｒｉａｌｓＶｏｌ．８４, 20050915, Ｐａｇｅｓ２１８-２２２, Ｅｌｓｅｖｉｅｒ
JPN6012063952; Ｇ．ＺＨＵ　ｅｔ　ａｌ．: 'Ｐｏｌｙｓｔｙｒｅｎｅ　Ｂｅａｄ-Ａｓｓｉｓｔｅｄ　Ｓｅｌｆ-Ａｓｓｅｍｂｌｙ　ｏｆ　Ｍｉｃｒｏｓｔｒｕｃｔｕｒｅｄ　Ｓｉｌｉｃａ　Ｈｏｌｌｏｗ　Ｓｐｈｅｒｅｓ　ｉｎ　Ｈｉｇｈｌｙ　Ａｌｋａｌｉｎｅ' Ｊ．Ａｍ．Ｃｈｅｍ．Ｓｏｃ．Ｖｏｌ．１２３．　Ｎｏ．３１, 20010808, Ｐａｇｅｓ７７２３-７７２４, Ａｍｅｒｉｃａｎ　Ｃｈｅｍｉｃａｌ　Ｓｏｃｉｅｔｙ
JPN6012063953; Ｙ．ＺＨＵ　ｅｔ　ａｌ．: 'Ａ　ｆａｃｉｌｅ　ｍｅｔｈｏｄ　ｔｏ　ｓｙｎｔｈｅｓｉｚｅ　ｎｏｖｅｌ　ｈｏｌｌｏｗ　ｍｅｓｏｐｏｒｏｕｓ　ｓｉｌｉｃａ　ｓｐｈｅｒｅｓ　ａｎｄ　ａｄｖａｎｃｅｄ　ｓｔｏｒａｇｅ　ｐｒｏｐｅｒｔｙ' Ｍｉｃｒｏｐｏｒｏｕｓ　ａｎｄ　Ｍｅｓｏｐｏｒｏｕｓ　ＭａｔｅｒｉａｌｓＶｏｌ．８４, 20050915, Ｐａｇｅｓ２１８-２２２, Ｅｌｓｅｖｉｅｒ

Attorney, Agent or Firm:

Tamotsu Otani
Masamichi Tohei
Makoto Kataoka
Kenichi Hirasawa

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