Title:
METHOD FOR PRODUCING ACRYLIC POLYMER PARTICLES
Document Type and Number:
WIPO Patent Application WO/2013/125428
Kind Code:
A1
Abstract:
According to the present invention, when producing acrylic polymer particles by discharging a monomer composition from a microchannel into an aqueous medium as microdroplets to create an emulsion with the monomer composition being a dispersed phase thereof, and heating the emulsion to radically polymerize an acrylic monomer, the flow rate of a monomer composition is increased and the time for producing particles is extended to a longer period than before. When producing acrylic polymer particles by discharging a monomer composition from a microchannel into an aqueous medium as microdroplets to create an emulsion with the microdroplets of the monomer composition being a dispersed phase thereof, and heating the emulsion to radically polymerize an acrylic monomer, the monomer composition to be used is adjusted to exhibit a water solubility such that the amount of the monomer composition dissolving in an aqueous layer is 35 mass% or more, the aqueous layer being obtained by stirring and mixing a 1 mass% aqueous solution of sodium dodecyl sulfate and the monomer composition at 25°C and at a mass ratio of 1:1 and then subjecting the mixture to centrifugation at a speed of rotation of 1500 rpm for 10 minutes.
Inventors:
NOMURA MAMIKO (JP)
HIRAKAWA MANABU (JP)
HIRAKAWA MANABU (JP)
Application Number:
PCT/JP2013/053483
Publication Date:
August 29, 2013
Filing Date:
February 14, 2013
Export Citation:
Assignee:
DEXERIALS CORP (JP)
International Classes:
C08F2/26; C08F20/10; C08F290/06
Foreign References:
| JP2008031419A | 2008-02-14 | |||
| JP2008239968A | 2008-10-09 | |||
| JP2008239969A | 2008-10-09 | |||
| JP2007533798A | 2007-11-22 |
Attorney, Agent or Firm:
TAJIME & TAJIME (JP)
Patent business corporation Tajime international patent firm (JP)
Patent business corporation Tajime international patent firm (JP)
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Claims: