Title:
MAGNESIUM HYDROXIDE PARTICLES AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2016/163562
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide magnesium hydroxide particles and magnesium oxide particles, which have fine and uniform particle diameters, while having high purity and excellent dispersibility.
The present invention is a method for producing magnesium hydroxide particles, which comprises: a step (i) wherein an aqueous solution of a soluble magnesium salt is reacted with an aqueous alkaline solution, thereby producing a slurry containing magnesium hydroxide particles; a step (ii) wherein the thus-obtained slurry is subjected to a heat treatment at 0-100°C for 5-500 hours at atmospheric pressure; a step (iii) wherein a cake containing the magnesium hydroxide particles is separated from the heat-treated slurry and purified; and a step (iv) wherein the separated and purified cake is dried, thereby obtaining magnesium hydroxide particles.
Inventors:
WANG XING DONG (JP)
OOHORI KOHEI (JP)
MUTO JUNKO (JP)
NEDACHI KOHICHI (JP)
OOHORI KOHEI (JP)
MUTO JUNKO (JP)
NEDACHI KOHICHI (JP)
Application Number:
PCT/JP2016/061957
Publication Date:
October 13, 2016
Filing Date:
April 07, 2016
Export Citation:
Assignee:
KYOWA CHEM IND CO LTD (JP)
International Classes:
C01F5/22; C01F5/08; C09C1/02; C09C3/08; C09K21/02
Domestic Patent References:
| WO2014155764A1 | 2014-10-02 |
Foreign References:
| CN1332116A | 2002-01-23 | |||
| JPH0797210A | 1995-04-11 | |||
| JP2012072004A | 2012-04-12 | |||
| JP2016003174A | 2016-01-12 |
Attorney, Agent or Firm:
OHSHIMA, Masataka (JP)
Masataka Oshima (JP)
Masataka Oshima (JP)
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