Particle in the shape of an encapsulated droplet and process for making such a particle

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United States of America Patent

PATENT NO 8859641
APP PUB NO 20090253828A1
SERIAL NO

12309860

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Abstract

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Particle in the shape of an encapsulated droplet comprising a core material and a shell material surrounding the core material, the shell material containing maleimide groups, preferably a copolymer of maleimide groups. The shell material contains a copolymer of styrene and maleic anhydride derivatives, of which more than 75 mole %, preferably more than 90 mole % is maleimide, and the average particle size is smaller than 300 nm. The particles are obtained by a process comprising by heating between 80° C. and 195° C., more preferably between 120° C. and 190° C. an ammonium salt of a maleic anhydride containing polymer in the presence of the core material.

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Patent Owner(s)

  • TOPCHIM N.V.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Van, Den Abbeele Henk Jan Frans Schaffen-Diest, BE 7 21

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