Composite particle and preparation thereof
AssigneeL'oreal
InventorsShinichi MATSUFUJI, Toshifumi SHIROYA, Christophe DUMOUSSEAUX, Andres CARDOZO PEREZ
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Abstract
The present invention relates to a composite particle comprising: at least one hydrophilic core particle; and a plurality of hydrophobic particles, wherein the surface of the hydrophilic core particle is substantially discontinuously covered by the hydrophobic particles. The novel composite particle according to the present invention can have surface active properties sufficient to prepare stable Pickering emulsions, and can maintain the surface active properties over a long period of time. The present invention also relates to a method for preparing the above composite particle.
Claims17
A composite particle comprising:
- at least one hydrophilic core particle;
- and
- a plurality of hydrophobic particles,
- wherein
- the surface of the hydrophilic core particle is substantially discontinuously covered by the hydrophobic particles.
A method for preparing a composite particle, comprising a step of subjecting:
- at least one hydrophilic core particle;
- and
- a plurality of hydrophobic particles
- to a mechanochemical fusion process, preferably a hybridizer process,
- wherein the weight ratio of the hydrophilic core particle(s) to the hydrophobic particles is preferably 70:30 to 80:20, more preferably 80:20 to 90:10, and even more preferably 90:10 to 99.9:0.1.
A method for preparing a composite particle, comprising a step of subjecting:
- at least one hydrophilic core particle;
- and
- a plurality of hydrophobic particles, preferably two different types of hydrophobic particles
- to a mechanochemical fusion process, preferably a hybridizer process,
- wherein the weight ratio of the hydrophilic core particle(s) to the hydrophobic particles is preferably 10:90 to 70:30, more preferably 15:85 to 50:50, even more preferably 20:80 to 30:70.
Dependencies are inferred from the claim text.