Miyoshi Europe S.A.S.;CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE;Commissariat à l'Énergie Atomique et aux Énergies Alternatives
发明人:
申请号：
EP18306498.9
公开号：
EP3653674A1
申请日:
2018.11.15
申请国别(地区):
EP
年份:
2020
代理人:
摘要：
The present invention relates to the cosmetic field. Especially, the present invention refers to omniphobic cosmetic pigments under the form of a core shell structure: the core comprises or consists of a metal oxide on which is adsorbed poly(β-(1→4)-D-glucosamine) chains； said chains being acetylated, or partially or totally deacetylated. The present invention also relates to the process for manufacturing said omniphobic cosmetic pigments, comprising:(i) Preparing an acidic aqueous solution comprising metal oxide particles and a poly (β-(1→4)-D-glucosamine), said poly (β-(1→4)-D-glucosamine) being acetylated, or partially or totally deacetylated； and(ii) Increasing the pH until about 12, of the solution obtained at step (i) in order to obtain the adsorption of said poly (β-(1→4)-D-glucosamine on the metal oxide particles and the precipitation of the resulting metal oxide particles coated with said poly (β-(1→4)-D-glucosamine.
