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Process and apparatus for producing emulsion and microcapsules achieved

Foreign code F110005691
File No. Y0144US3
Posted date Sep 12, 2011
Country United States of America
Application number 28725105
Gazette No. 20060079583
Gazette No. 7375140
Date of filing Nov 28, 2005
Gazette Date Apr 13, 2006
Gazette Date May 20, 2008
International application number JP2002001186
International publication number WO2002068104
Date of international filing Feb 13, 2002
Date of international publication Sep 6, 2002
Priority data
  • P2001-048097 (Feb 23, 2001) JP
  • P2001-238624 (Aug 7, 2001) JP
  • 2002WO-JP01186 (Feb 13, 2002) WO
  • 2003US-10468015 (Aug 22, 2003) US
Title Process and apparatus for producing emulsion and microcapsules achieved
Abstract (US7375140)
A process and apparatus for rapidly producing an emulsion and microcapsules in a simple manner is provided wherein a dispersion phase is ejected from a dispersion phase-feeding port toward a continuous phase flowing in a microchannel in such a manner that flows of the dispersion phase and the continuous phase cross each other, thereby obtaining microdroplets, formed by the shear force of the continuous phase, having a size smaller than the width of the channel for feeding the dispersion phase.
Scope of claims [claim1]
1. A process for producing an emulsion, comprising: feeding a flow of a dispersion phase from a dispersion phase-feeding channel to a flow of a first continuous phase flowing in a microchannel at a first junction to form a two-layered flow consisting of the flow of the first continuous phase and the flow of the dispersion phase;
and
feeding the two-layered flow consisting of the flow of the first continuous phase and the flow of the dispersion phase to a flow of a second continuous phase flowing in a microchannel at a second junction, thereby forming an emulsion consisting of the dispersion phase in a flow comprising a liquid micro-particulate separated from the first continuous phase and the second continuous phase.
[claim2]
2. A process for producing microcapsules, comprising: feeding a flow of a dispersion phase from a dispersion phase-feeding channel to a flow of a first continuous phase flowing in a microchannel at a first junction to form emulsions comprising liquid micro-particulates of the dispersion phase;
and
feeding the flow of the first continuous phase containing the emulsions to a flow of a second continuous phase flowing in a microchannel at a second junction, thereby forming microcapsules in the flow of the second continuous phase, the microcapsules containing the emulsions encapsulated in the first continuous phase as shells.
  • Inventor, and Inventor/Applicant
  • HIGUCHI TOSHIRO
  • TORII TORU
  • NISHISAKO TAKASHI
  • TANIGUCHI TOMOHIRO
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
IPC(International Patent Classification)
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