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Title:
METHOD OF PRODUCING AMORPHOUS CALCIUM PHOSPHATE SLURRY AND METHOD OF PRODUCING POLYMERIC PARTICLE
Document Type and Number:
Japanese Patent JP2001261313
Kind Code:
A
Abstract:

To provide a method of producing amorphous calcium phosphate slurry capable of being kept in a highly dispersed state for a long period, and to provide a method of producing fine polymeric particles having uniform particle diameters by using the slurry.

This method of producing amorphous calcium phosphate slurry comprises adding a calcium component to water, pulverizing and dispersing by subjecting the mixture to a through shearing treatment to make slurry, and further adding a highly concentrated aqueous phosphoric acid solution containing 25-85 wt.% of a phosphoric acid component to the obtained slurry to form the amorphous calcium phosphate particles. The method of producing the polymeric particles comprises using the above amorphous calcium phosphate slurry as a dispersion stabilizer when an ethylenic monomer is subjected to water-based suspension polymerization in the presence of a polymerization initiator and a surfactant.


Inventors:
SAEKI TATSUYA
KUSAKA AKIYOSHI
Application Number:
JP2000074641A
Publication Date:
September 26, 2001
Filing Date:
March 16, 2000
Export Citation:
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Assignee:
SEKISUI PLASTICS
International Classes:
C01B25/32; C08F2/18; (IPC1-7): C01B25/32; C08F2/18
Domestic Patent References:
JPS62132713A1987-06-16
JPH04156555A1992-05-29
JPH07292003A1995-11-07
JPH11268905A1999-10-05
Attorney, Agent or Firm:
野河 信太郎