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Title:
MICROCAPSULES IV
Document Type and Number:
WIPO Patent Application WO2001001929
Kind Code:
A3
Abstract:
The invention relates to microcapsules which have average diameters ranging from 0.1 to 5 mm, and which are comprised of an enclosing membrane and of a matrix containing at least one active substance. The inventive microcapsules can be obtained by: (a) preparing a matrix consisting of gel formers, anionic polymers and active substances; (b) dispersing the matrix in an oil phase, and (c) treating the dispersed matrix with aqueous chitosan solutions thus removing the oil phase.

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Inventors:
GARCES JOSE (ES)
VILADOT PETIT JOSEP-LUIS (ES)
Application Number:
PCT/EP2000/005810
Publication Date:
November 07, 2002
Filing Date:
June 23, 2000
Export Citation:
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Assignee:
PRIMACARE S A (ES)
GARCES JOSE (ES)
VILADOT PETIT JOSEP-LUIS (ES)
International Classes:
A61K8/11; A61K8/64; A61K8/66; A23L1/00; A61K8/72; A61K8/73; A61K8/92; A61K8/96; A61K9/16; A61K9/50; A61K9/62; A61K9/64; A61K9/66; A61K47/30; A61K47/36; A61K47/42; A61Q5/02; A61Q17/04; A61Q19/00; A61Q19/10; B01J13/02; C08L5/00; C11D3/18; C11D3/22; C11D3/37; C11D17/00; C11D17/08; (IPC1-7): A61K7/00; A61K9/50; C11D17/08
Domestic Patent References:
WO1998043609A21998-10-08
Foreign References:
US5753264A1998-05-19
FR2699545A11994-06-24
EP0237542A11987-09-23
US5089272A1992-02-18
US5855904A1999-01-05
EP0152898A21985-08-28
Other References:
PATENT ABSTRACTS OF JAPAN vol. 13, no. 190 (C - 593) 8 May 1989 (1989-05-08)
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 02 29 February 1996 (1996-02-29)
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