Patents Assigned to MIYOSHI EUROPE S.A.S.
  • Process for manufacturing omniphobic cosmetic pigments
    Patent number: 11040000
    Abstract: 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(?-(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 (?-(1?4)-D-glucosamine), the poly (?-(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 (?-(1?4)-D-glucosamine on the metal oxide particles and the precipitation of the resulting metal oxide particles coated with the poly (?-(1?4)-D-glucosamine.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: June 22, 2021
    Assignees: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES (CEA), CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, MIYOSHI EUROPE S.A.S.
    Inventors: Patrick Guenoun, Christophe Fajolles, Tetsuya Takahashi, Stephane Nicolas, Pauline Bosmet, Sébastien Gougeon
  • PROCESS FOR MANUFACTURING OMNIPHOBIC COSMETIC PIGMENTS
    Publication number: 20200155441
    Abstract: 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(?-(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 (?-(1?4)-D-glucosamine), the poly (?-(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 (?-(1?4)-D-glucosamine on the metal oxide particles and the precipitation of the resulting metal oxide particles coated with the poly (?-(1?4)-D-glucosamine.
    Type: Application
    Filed: November 15, 2019
    Publication date: May 21, 2020
    Applicants: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES (CEA), CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, MIYOSHI EUROPE S.A.S.
    Inventors: Patrick GUENOUN, Christophe FAJOLLES, Tetsuya TAKAHASHI, Stephane NICOLAS, Pauline BOSMET, Sébastien GOUGEON