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1. (WO2001005367) A PROCESS FOR STABILIZING ANTIOXIDANT COMPOUNDS, AND AQUEOUS COMPOSITIONS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/005367 International Application No.: PCT/BR2000/000078
Publication Date: 25.01.2001 International Filing Date: 14.07.2000
Chapter 2 Demand Filed: 15.02.2001
IPC:
C09K 15/06 (2006.01)
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
K
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
15
Anti-oxidant compositions; Compositions inhibiting chemical change
04
containing organic compounds
06
containing oxygen
Applicants: ALCANTARA MARTINS ZUCCHETTI, Roberto[BR/BR]; BR (UsOnly)
VILLA NOVA SILVA, Luciana[BR/BR]; BR (UsOnly)
CHITARRA SOUZA, Simoni[BR/BR]; BR (UsOnly)
FANAN, Simone[BR/BR]; BR (UsOnly)
GESZTESI, Jean-Luc[BR/BR]; BR (UsOnly)
MARTINS MATHEUS, Luiz, Gustavo[BR/BR]; BR (UsOnly)
POMMEZ, Philippe, Joseph[CA/BR]; BR (UsOnly)
ARAÚJO MACIAN, Karla[BR/BR]; BR (UsOnly)
FUSCELLI PYTEL, Rodrigo[BR/BR]; BR (UsOnly)
INDÚSTRIA E COMÉRCIO DE COSMÉTICOS NATURA LTDA.[BR/BR]; Rodovia Regis Bittencourt S/N KM 293 CEP-06850 Itapecerica da Serra, SP, BR (AllExceptUS)
Inventors: ALCANTARA MARTINS ZUCCHETTI, Roberto; BR
VILLA NOVA SILVA, Luciana; BR
CHITARRA SOUZA, Simoni; BR
FANAN, Simone; BR
GESZTESI, Jean-Luc; BR
MARTINS MATHEUS, Luiz, Gustavo; BR
POMMEZ, Philippe, Joseph; BR
ARAÚJO MACIAN, Karla; BR
FUSCELLI PYTEL, Rodrigo; BR
Agent: DANNEMANN, SIEMSEN, BIGLER & IPANEMA MOREIRA; Rua Marques de Olinda, 70 Caixa Postal 2142 CEP-22251-040 Rio de Janeiro, RJ, BR
Priority Data:
PI 0003166-618.02.2000BR
PI 9902973-116.07.1999BR
Title (EN) A PROCESS FOR STABILIZING ANTIOXIDANT COMPOUNDS, AND AQUEOUS COMPOSITIONS
(FR) PROCEDE DE STABILISATION DE COMPOSES ANTIOXYDANTS, ET DE COMPOSITIONS AQUEUSES
Abstract:
(EN) The present invention is directed to a process for stabilizing antioxidant compounds comprising the step of adding to said compound, in an aqueous mean, at least an oxygen-removing compound, at least a metallic ion sequestering compound and at least an oxidation reaction reversing compound. The invention is particularly useful to stabilize antioxidant compounds such as levogyrous ascorbic acid (LAA), popularly known as 'Vitamin C', and the LAA associated with proantocianidines (OPC) for the preparation of pharmaceutical and cosmetic compositions.
(FR) La présente invention concerne un procédé de stabilisation de composés antioxydants consistant à ajouter aux composés, dans un milieu aqueux, au moins un composé retirant l'oxygène, au moins un composé séquestrant les ions métalliques et au moins un composant inversant une réaction d'oxydation. L'invention est particulièrement utile dans la stabilisation de composés antioxydants tels que l'acide ascorbique lévogyre (LAA), plus connu sous le nom de « vitamine C », et l'acide ascorbique lévogyre associé aux proantocianidines (OPC) pour la préparation de compositions pharmaceutiques et cosmétiques.
Designated States: CA, JP, US
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)