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1. (WO2010139588) PROCESS FOR THE PREPARATION OF A COMPOSITION COMPRISING MESO-TARTARIC ACID
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2010/139588    International Application No.:    PCT/EP2010/057287
Publication Date: 09.12.2010 International Filing Date: 27.05.2010
Chapter 2 Demand Filed:    03.03.2011    
IPC:
C01D 3/26 (2006.01), C07C 51/367 (2006.01), C07C 51/487 (2006.01)
Applicants: AKZO NOBEL CHEMICALS INTERNATIONAL B.V. [NL/NL]; Stationsstraat 77 NL-3811 MH Amersfoort (NL) (For All Designated States Except US).
BAKKENES, Hendrikus, Wilhelmus [NL/NL]; (NL) (For US Only).
BERGEVOET, Roberto, Aloysius, Gerardus, Maria [NL/NL]; (NL) (For US Only).
MEIJER, Johannes, Albertus, Maria [NL/NL]; (NL) (For US Only).
STEENSMA, Maria [NL/NL]; (NL) (For US Only)
Inventors: BAKKENES, Hendrikus, Wilhelmus; (NL).
BERGEVOET, Roberto, Aloysius, Gerardus, Maria; (NL).
MEIJER, Johannes, Albertus, Maria; (NL).
STEENSMA, Maria; (NL)
Agent: ALFERINK, Petrus, Johannes, Theodorus; Akzo Nobel N.V. Legal, IP & Compliance P.O. Box 9300 NL-6800 SB Arnhem (NL)
Priority Data:
09161723.3 02.06.2009 EP
61/183,269 02.06.2009 US
Title (EN) PROCESS FOR THE PREPARATION OF A COMPOSITION COMPRISING MESO-TARTARIC ACID
(FR) PROCEDE POUR LA PREPARATION D'UNE COMPOSITION COMPORTANT DE L'ACIDE MESO-TARTRIQUE
Abstract: front page image
(EN)The present invention relates to a process for the preparation of a composition comprising tartaric acid wherein between 55 and 90% by weight of the tartaric acid is meso-tartaric acid, comprising the steps of (i) preparing an aqueous mixture comprising between 35 and 65% by weight of a di-alkali metal salt of L-tartaric acid, a di-alkali metal salt of D-tartaric acid, a mixture of di-alkali metal salts of L-tartaric acid, D-tartaric acid, and optionally meso-tartaric acid, and between 2 and 15% by weight of an alkali metal or alkaline metal hydroxide, and (ii) stirring and heating the aqueous mixture to a temperature of between 100°C and its boiling point until between 55 and 90% by weight of tartaric acid has been converted to meso-tartaric acid.
(FR)La présente invention concerne une composition de chlorure de sodium comportant un complexe de fer de l'acide tartrique dans laquelle entre 55 et 90% en poids de l'acide tartrique est l'acide méso-tartrique, comprenant les étapes suivantes : (i) la préparation d'un mélange aqueux comportant entre 35 et 65% en poids d'un sel métallique di-alcalin de l'acide L-tartrique, d'un sel métallique di-alcalin de l'acide D-tartrique, un mélange de sels métalliques di-alcalins de l'acide L-tartrique, de l'acide D-tartrique, et éventuellement de l'acide méso-tartrique, et entre 2 et 15% en poids d'un métal alcalin ou d'un hydroxyde de métal alcalin; et (ii) l'agitation et le chauffage du mélange aqueux jusqu'à une température comprise entre 100°C et son point d'ébullition jusqu'à la conversion de 55 à 90% en poids de l'acide tartrique en acide méso-tartrique.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, 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, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, 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 (BW, GH, GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (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, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)