Method for preparing microcapsules and microparticles of controlled size

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11338265
APP PUB NO 20190299185A1
SERIAL NO

16465970

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Abstract

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The present invention relates to a method for the preparation of microparticles and solid microcapsules comprising the following steps:

    a) the addition, with stirring, of composition C′2 in a composition C3, the compositions C′2 and C3 not being miscible with each other, the composition C′2 being either a monophasic composition C2 or an emulsion (E1) comprising drops of a composition C1, comprising at least one active ingredient, dispersed in a polymeric composition C2, the compositions C1 and C2 not being miscible in each other, the viscosity of composition C3 being greater than 10,000 mPa·s at 25° C. at a shear rate of s−1 and being less than 10,000 mPa·s at 25° C. at a shear rate of between 100 s−1 and 100,000 s−1, wherein an emulsion (E2) is obtainedb) applying shear to the emulsion (E2), the applied shear rate being less than 1000 s−1, wherein an emulsion (E3) is obtained; andc) the polymerization of the composition C′2.

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Patent Owner(s)

Patent OwnerAddress
CALYXIA94380 BONNEUIL-SUR-MARNE

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Demoulin, Damien Paris, FR 15 11
Walters, Jamie Paris, FR 14 12

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