公开(公告)号：US11020338B2

公开(公告)日：2021-06-01

申请号：US15536165

申请日：2015-12-17

Applicant: L'OREAL

Inventor： Shinichi Matsufuji ,  Toshifumi Shiroya ,  Christophe Dumousseaux ,  Andres Cardozo Perez

IPC: A61K8/81 ,  A61K8/73 ,  A61K8/06 ,  A61K8/02 ,  A61Q1/00 ,  A61K8/11 ,  A61K8/29 ,  A61Q19/00 ,  C08L1/02 ,  C08L33/12

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.

公开(公告)号：US20200163866A1

公开(公告)日：2020-05-28

申请号：US16619887

申请日：2018-06-08

Applicant: L'Oreal

Inventor： Toshifumi Shiroya ,  Hidehiko Asanuma ,  Takehiko Kasai

IPC: A61K8/92 ,  A61K8/88 ,  A61K8/81 ,  A61K8/73 ,  A61K8/06 ,  A61Q19/00

Abstract: The present invention relates to a composition, preferably a cosmetic composition, and more preferably a skin cosmetic composition, comprising: (a) at least one particle, comprising at least one cationic polymer and at least one anionic polymer, at least one cationic polymer and at least one amphoteric polymer, at least one anionic polymer and at least one amphoteric polymer, or at least one amphoteric polymer, and at least one non-polymeric acid having two or more pKa values or salt(s) thereof or at least one non-polymeric base having two or more pKb values or salt(s) thereof; (b) at least one oil; and (c) water. The composition according to the present invention is stable, and can have a variety of cosmetic functions. For example, the composition according to the present invention can prepare a film which can have cosmetic effects such as moisturizing due to the oil(s).