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1. US20200155441 - PROCESS FOR MANUFACTURING OMNIPHOBIC COSMETIC PIGMENTS

Office États-Unis d'Amérique
Numéro de la demande 16684802
Date de la demande 15.11.2019
Numéro de publication 20200155441
Date de publication 21.05.2020
Type de publication A1
CIB
A61K 8/73
ANÉCESSITÉS COURANTES DE LA VIE
61SCIENCES MÉDICALE OU VÉTÉRINAIRE; HYGIÈNE
KPRÉPARATIONS À USAGE MÉDICAL, DENTAIRE OU POUR LA TOILETTE
8Cosmétiques ou préparations similaires pour la toilette
18caractérisés par la composition
72contenant des composés organiques macromoléculaires
73Polysaccharides
A61K 8/29
ANÉCESSITÉS COURANTES DE LA VIE
61SCIENCES MÉDICALE OU VÉTÉRINAIRE; HYGIÈNE
KPRÉPARATIONS À USAGE MÉDICAL, DENTAIRE OU POUR LA TOILETTE
8Cosmétiques ou préparations similaires pour la toilette
18caractérisés par la composition
19contenant des composés inorganiques
29Titane; Ses composés
A61K 8/36
ANÉCESSITÉS COURANTES DE LA VIE
61SCIENCES MÉDICALE OU VÉTÉRINAIRE; HYGIÈNE
KPRÉPARATIONS À USAGE MÉDICAL, DENTAIRE OU POUR LA TOILETTE
8Cosmétiques ou préparations similaires pour la toilette
18caractérisés par la composition
30contenant des composés organiques
33contenant de l'oxygène
36Acides carboxyliques; Leurs sels ou anhydrides
CPC
A61K 8/29
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
8Cosmetics or similar toilet preparations
18characterised by the composition
19containing inorganic ingredients
29Titanium; Compounds thereof
A61K 8/736
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
8Cosmetics or similar toilet preparations
18characterised by the composition
72containing organic macromolecular compounds
73Polysaccharides
736Chitin; Chitosan; Derivatives thereof
A61K 8/02
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
8Cosmetics or similar toilet preparations
02characterised by special physical form
A61K 2800/412
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
2800Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
40Chemical, physico-chemical or functional or structural properties of particular ingredients
41Particular ingredients further characterized by their size
412Microsized, i.e. having sizes between 0.1 and 100 microns
A61K 2800/31
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
2800Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
20Chemical, physico-chemical or functional or structural properties of the composition as a whole
30Characterized by the absence of a particular group of ingredients
31Anhydrous
A61K 8/36
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
8Cosmetics or similar toilet preparations
18characterised by the composition
30containing organic compounds
33containing oxygen
36Carboxylic acids; Salts or anhydrides thereof
Déposants COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES (CEA)
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
MIYOSHI EUROPE S.A.S.
Inventeurs Patrick GUENOUN
Christophe FAJOLLES
Tetsuya TAKAHASHI
Stephane NICOLAS
Pauline BOSMET
Sébastien GOUGEON
Données relatives à la priorité 18306498.9 15.11.2018 EP
Titre
(EN) PROCESS FOR MANUFACTURING OMNIPHOBIC COSMETIC PIGMENTS
Abrégé
(EN)

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.