PROCESS FOR MICROCHANNEL PRODUCTION OF COLORED SPHERICAL GRAIN AND MICROCHANNEL PRODUCTION APPARATUS FOR USE THEREIN

Title:

PROCESS FOR MICROCHANNEL PRODUCTION OF COLORED SPHERICAL GRAIN AND MICROCHANNEL PRODUCTION APPARATUS FOR USE THEREIN

Document Type and Number:

WIPO Patent Application WO/2004/052941

Kind Code:

A1

Abstract:

Two-toned monodisperse colored spherical grains useful in, for example, display units such as character, graphic and image displays, especially bichrome spherical grains wherein from the viewpoint of display performance, two hues permit electrically or magnetically reversing display; and a novel process and apparatus for producing the same. In particular, a process for microchannel production, comprising providing colorant continuous phases of different hues (6a, 6b) and spherical granulation dispersion phase (7) which are in O/W or W/O relationship to each other; and in a fluid dispersion medium containing a polymerizable resin component, transferring the colorant continuous phases of different hues (6a, 6b) prepared by dispersing colorant dyes or pigments into first microchannel (1) and continuously or intermittently discharging the same into the spherical granulation dispersion phase (7) flowing at given flow rate (F2, ml/h) through second microchannel (2) so that the polymerizable resin component within the colorant continuous phases of two hues rendered spherical is hardened to thereby form colored spherical polymer grains. Further, there is provided a microchannel production apparatus for use in the process.

Inventors:

TORII TORU (JP)
HIGUCHI TOSHIRO (JP)
NISISAKO TAKASI (JP)
TAKIZAWA YOUICHI (JP)
TAKAHASHI TAKANORI (JP)

Application Number:

PCT/JP2003/015592

Publication Date:

June 24, 2004

Filing Date:

December 05, 2003

Export Citation:

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Assignee:

SOKEN KAGAKU KK (JP)
TORII TORU (JP)
HIGUCHI TOSHIRO (JP)
NISISAKO TAKASI (JP)
TAKIZAWA YOUICHI (JP)
TAKAHASHI TAKANORI (JP)

International Classes:

C08F2/32; C08F2/44; C08F20/00; C08F2/12; (IPC1-7): C08F2/32; C08F2/44

Domestic Patent References:

WO2003037501A1	2003-05-08
WO2001007506A2	2001-02-01
WO2000068300A1	2000-11-16

Foreign References:

JP2003290647A	2003-10-14
JP2004059802A	2004-02-26
JP2002539150A	2002-11-19
JP2001181309A	2001-07-03

Other References: