The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 29, 2008
Filed:
Nov. 20, 2003
Takashi Tatsumi, Yokohama, JP;
Hideaki Yoshitake, Tokyo, JP;
Toshiyuki Yokoi, Yokohama, JP;
Shunai Che, Yokohama, JP;
Kazutami Sakamoto, Kawasaki, JP;
Takashi Tatsumi, Yokohama, JP;
Hideaki Yoshitake, Tokyo, JP;
Toshiyuki Yokoi, Yokohama, JP;
Shunai Che, Yokohama, JP;
Kazutami Sakamoto, Kawasaki, JP;
Ajinomoto Co., Inc., Tokyo, JP;
Abstract
(A) An anionic surfactant, (B) a silicate monomer and (C) a basic silane are mixed in water or a mixed solvent of a water-miscible organic solvent and water to obtain a mesoporous silica complex having mesopores with a uniform size, the anionic surfactant Component (A) is removed by washing the resultant mesoporous silica complex with an acidic aqueous solution, a water-miscible organic solvent or an aqueous solution thereof to obtain a mesoporous silica outer shell utilizing the structure of the mesoporous silica complex as a template, and the mesoporous silica complex or the mesoporous silica outer shell is calcined to obtain a mesoporous silica. The mesoporous silica can be synthesized in this manner utilizing the anionic surfactant micelle with a remarkably low affinity to the silicate monomer.