Title:
【発明の名称】超臨界流体を使用したマイクロカプセル化方法
Document Type and Number:
Japanese Patent JP2000511110
Kind Code:
A
Abstract:
The present invention comprises a method for microencapsulating a core material comprising the steps of a) mixing a core material with an encapsulating polymer, b) supplying a supercritical fluid capable of swelling the polymer to the mixture under a temperature and a pressure sufficient to maintain the fluid in a supercritical state, c) allowing the supercritical fluid to penetrate and liquefy the polymer while maintaining temperature and pressure sufficient to maintain the fluid in a supercritical state, and d) rapidly releasing the pressure to solidify the polymer around the core material to form a microcapsule. This method requires neither that the polymer nor core materials to be soluble in the supercritical fluid and can be used to rapidly and efficiently microencapsulate a variety of materials for a variety of applications.
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Inventors:
Shine, Annette, Dudek
Gerb, Jack, Junior
Gerb, Jack, Junior
Application Number:
JP51758198A
Publication Date:
August 29, 2000
Filing Date:
October 01, 1997
Export Citation:
Assignee:
University of Delaware
International Classes:
A01N25/28; A61K9/16; A61K39/00; A61K39/12; B01J3/00; B01J13/02; B01J13/04; C05G5/00; C09B67/08; A61K9/50; C09D11/00; C09J201/00; A61K9/00; (IPC1-7): B01J13/04; A01N25/28; A61K9/50; A61K39/00; A61K39/12; B01J3/00; C05G5/00; C09B67/08; C09D11/00; C09J201/00
Attorney, Agent or Firm:
Koichi Fujii (1 person outside)