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1. (WO2017016917) A PROCESS FOR EFFICIENT CROSS-LINKING OF HYALURONIC ACID
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Pub. No.: WO/2017/016917 International Application No.: PCT/EP2016/067072
Publication Date: 02.02.2017 International Filing Date: 18.07.2016
IPC:
A61K 8/73 (2006.01) ,C08B 37/08 (2006.01) ,A61K 31/728 (2006.01) ,A61K 47/36 (2006.01) ,C08L 5/08 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
K
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
8
Cosmetics or similar toilet preparations
18
characterised by the composition
72
containing organic macromolecular compounds
73
Polysaccharides
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
B
POLYSACCHARIDES; DERIVATIVES THEREOF
37
Preparation of polysaccharides not provided for in groups C08B1/-C08B35/110; Derivatives thereof
08
Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
K
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
31
Medicinal preparations containing organic active ingredients
70
Carbohydrates; Sugars; Derivatives thereof
715
Polysaccharides, i.e. having more than five saccharide radicals attached to each other by glycosidic linkages; Derivatives thereof, e.g. ethers, esters
726
Glycosaminoglycans, i.e. mucopolysaccharides
728
Hyaluronic acid
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
K
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
47
Medicinal preparations characterised by the non-active ingredients used, e.g. carriers, inert additives
30
Macromolecular compounds
36
Polysaccharides; Derivatives thereof
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
5
Compositions of polysaccharides or of their derivatives not provided for in group C08L1/ or C08L3/142
08
Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
Applicants: GALDERMA SA[CH/CH]; Zugerstrasse 8 6330 Cham, CH
Inventors: KARLSSON, Morgan; SE
Agent: AWAPATENT AB; Box 45086 104 30 Stockholm, SE
Priority Data:
15178526.827.07.2015EP
Title (EN) A PROCESS FOR EFFICIENT CROSS-LINKING OF HYALURONIC ACID
(FR) PROCÉDÉ DE RÉTICULATION EFFICACE D'ACIDE HYALURONIQUE
Abstract:
(EN) A process for manufacturing a cross-linked hyaluronic acid (HA) gel product is comprising the steps of: (a) preparing an aqueous mixture of HA and a cross-linking agent selected from multiepoxides and diepoxides; wherein the HA is dissolved in an aqueous solution containing 1-10 % (w/w) inorganic hydroxide; and wherein the dissolved HA constitutes more than 10 % (w/w) of the final mixture; and (b) subjecting the aqueous mixture to cross-linking conditions to allow the dissolved HA to react with the cross-linking agent so as to obtain a cross-linked HA gel product.
(FR) Un procédé de fabrication d'un produit de gel d'acide hyaluronique réticulé (HA) comprend les étapes consistant à : (a) préparer un mélange aqueux de HA et d'un agent de réticulation choisi parmi de multiples époxides et diépoxydes, le HA étant dissous dans une solution aqueuse contenant de 1 à 10 % (w/w) d'hydroxyde inorganique; et le HA dissous constituant plus de 10 % (w/w) du mélange final; et (b) soumettre le mélange aqueux à des conditions de réticulation pour permettre à HA dissous de réagir avec l'agent de réticulation de façon à obtenir un produit de gel HA réticulé.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)