MIYOSHI EUROPE S.A.S.;COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES (CEA);CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
发明人:
Patrick GUENOUN,Christophe FAJOLLES,Tetsuya TAKAHASHI,Stephane NICOLAS,Pauline BOSMET,Sébastien GOUGEON
申请号：
US16684802
公开号：
US20200155441A1
申请日:
2019.11.15
申请国别(地区):
US
年份:
2020
代理人:
摘要：
For the cosmetic field, omniphobic cosmetic pigments under the form of a core shell structure: the core is or includes of a metal oxide on which is adsorbed poly(β-(1→；4)-D-glucosamine) chains； the chains being acetylated, or partially or totally deacetylated. Also, the process for manufacturing the omniphobic cosmetic pigments, including:(i) preparing an acidic aqueous solution including metal oxide particles and a poly (β-(1→；4)-D-glucosamine), the poly (β-(1→；4)-D-glucosamine) being acetylated, or partially or totally deacetylated； and(ii) increasing the pH until 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 the poly (β-(1→；4)-D-glucosamine.
