Title:
ZINC OXIDE-BASED FINE PARTICLE, ITS PRODUCTION AND USE
Document Type and Number:
Japanese Patent JP3398829
Kind Code:
B2
Abstract:
PURPOSE: To obtain excellent heat ray shielding properties by using an additive element selected from among group IIIB and IVB metallic elements of the periodic table and Zn as metallic components and a coprecipitated substance of a metallic oxide manifesting the ZnO crystallinity at a specific ZnO content as a constituent component.
CONSTITUTION: A Zn source such as ZnO powder and a metallic element source selected from among group IIIB and IV metallic elements of the periodic table are added to a mixed solvent of a monocarboxylic acid having ≤200°C boiling point such as acetic acid with water. The temperature of the mixture solution is increased under stirring to dissolve both Zn and the metallic element sources to prepare a solution containing a metal such as Zn. The resultant solution containing the metal is then dropped into a heated solvent such as 2-butoxyethanol and the obtained mixture is heated to about 100-300°C. An additive such as lauric acid is then added thereto. The prepared mixture is stirred to provide ZnO-based primary fine particles, having 0.001-0.1μm average particle diameter, comprising a coprecipitated metallic oxide substance containing 80-99.1% Zn and 0.1-20% other metals expressed in terms of the ratio of number of atoms and capable of manifesting the ZnO crystallinity. Furthermore, a lactic acid source is added to the solution containing the metal and the resultant mixture solution is heat-treated at ≥100°C to afford secondary fine particles having 0.001-10μm average particle diameter.
More Like This:
| JP4100964 | Bricket preparation and its manufacturing method |
| JP2006518696 | Antimicrobial sulfophosphate glass |
| WO/2007/032274 | COSMETIC |
Inventors:
Mitsuo Takeda
Yumiko Ueda
Yumiko Ueda
Application Number:
JP32492095A
Publication Date:
April 21, 2003
Filing Date:
December 13, 1995
Export Citation:
Assignee:
Nippon Shokubai Co., Ltd.
International Classes:
A61K8/19; A61K8/00; A61K8/27; A61Q17/04; B05D5/00; B05D7/24; C01G9/02; C08J7/04; C08K3/22; C09D5/00; C09D5/24; C09D5/32; C09K3/00; C09K3/16; D06M11/00; D06M11/44; D21H17/67; D21H19/38; D06M101/00; D06M101/02; D06M101/06; D06M101/16; D06M101/18; D06M101/20; D06M101/22; D06M101/32; (IPC1-7): C01G9/02; A61K7/00; A61K7/42; B05D5/00; B05D7/24; C08J7/04; C08K3/22; C09D5/24; C09D5/32; C09K3/00; C09K3/16; D06M11/44; D21H17/67; D21H19/38
Domestic Patent References:
| JP6144834A | ||||
| JP6236710A | ||||
| JP6372620A | ||||
| JP4931679B1 |
Other References:
【文献】特許2821357(JP,B2)
Attorney, Agent or Firm:
Takehiko Matsumoto