Title:
INORGANIC UNIFORM MICOROSPHERE AND ITS MANUFACTURE
Document Type and Number:
Japanese Patent JP3051945
Kind Code:
B2
Abstract:
PURPOSE: To manufacture an inorganic microsphere consisting of a particle with small diameter by injecting an aqueous solution containing particle material into an organic solvent through a polymer membrane with a hydrophobic surface having through holes of almost uniform diameter which run through in a thickness direction.
CONSTITUTION: The resin membrane surface of polycarbonate or polyester is made hydrophobia as a polymer membrane 12. These resins have through holes, with almost uniform hole diameter penetrating in a thickness direction, which are obtained by irradiating with a particle beam such as a neutron beam and etching a defective part generated subsequently, using an aqueous alkali solution. Next, an aqueous solution 11 containing particle material such as sulfate of the copper group element or silicate of the alkali metal, is injected into an organic solvent 25 such as n-hexane or benzene through a polymer membrane 12. Subsequently, an inorganic uniform microsphere consisting of a particle with a diameter of 0.01 to 500μm is produced with high efficiency and also is almost free from granular irregularity.
Inventors:
Masamichi Ipponmatsu
Masashi Nishigaki
Hikaru Hirano
Takeshi Tsuruya
Masashi Nishigaki
Hikaru Hirano
Takeshi Tsuruya
Application Number:
JP18075291A
Publication Date:
June 12, 2000
Filing Date:
July 22, 1991
Export Citation:
Assignee:
OSAKA GAS CO.,LTD.
Liquid Gas Co., Ltd.
Suzuki Yushi Kogyo Co., Ltd.
Liquid Gas Co., Ltd.
Suzuki Yushi Kogyo Co., Ltd.
International Classes:
B01F3/08; B01F5/04; B01F5/10; B01J2/08; B01J2/06; B01J2/20; B01J4/04; B01J19/00; C01B13/36; C01B33/18; C03C4/00; B01F5/00; (IPC1-7): B01J2/06; B01F3/08; B01J19/00; C01B13/36; C01B33/18
Domestic Patent References:
| JP4154605A | ||||
| JP5240A |
Attorney, Agent or Firm:
Hitoko Tsuda (2 outside)
Shoko Tsutata
Shoko Tsutata