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1. (WO1998032819) PURIFYING POLYUNSATURATED FATTY ACID GLYCERIDES
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/1998/032819 International Application No.: PCT/NO1998/000025
Publication Date: 30.07.1998 International Filing Date: 26.01.1998
Chapter 2 Demand Filed: 18.08.1998
IPC:
C07C 67/58 (2006.01) ,C11B 3/00 (2006.01) ,C11B 3/16 (2006.01) ,C11B 7/00 (2006.01)
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
67
Preparation of carboxylic acid esters
48
Separation; Purification; Stabilisation; Use of additives
58
by liquid-liquid treatment
C CHEMISTRY; METALLURGY
11
ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
B
PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
3
Refining fats or fatty oils
C CHEMISTRY; METALLURGY
11
ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
B
PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
3
Refining fats or fatty oils
16
by mechanical means
C CHEMISTRY; METALLURGY
11
ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
B
PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
7
Separation of mixtures of fats or fatty oils into their constituents, e.g. saturated oils from unsaturated oils
Applicants:
PERRUT, Michel [FR/FR]; FR (UsOnly)
BREIVIK, Harald [NO/NO]; NO (UsOnly)
MAJEWSKI, Wieslaw [PL/FR]; FR (UsOnly)
NORSK HYDRO ASA [NO/NO]; N-0240 Oslo, NO (AllExceptUS)
Inventors:
PERRUT, Michel; FR
BREIVIK, Harald; NO
MAJEWSKI, Wieslaw; FR
Agent:
LILLEGRAVEN, Rita; Norsk Hydro asa N-0240 Oslo, NO
Priority Data:
9701705.728.01.1997GB
Title (EN) PURIFYING POLYUNSATURATED FATTY ACID GLYCERIDES
(FR) EPURATION DE GLYCERIDES D'ACIDES GRAS POLYINSATURES
Abstract:
(EN) A composition containing polyunsaturated fatty acid glycerides is purified by means of supercritical fluid fractionation in one or more countercurrent columns operated either with internal reflux achieved by a temperature gradient along the column or with an external reflux achieved through external regulation of the pressure, and using as the solvent a mixture of supercritical CO2 and a polar co-solvent. Oligomeric and malodorous impurities in particular can be successfully removed by this process, which also can, if desired, be followed, or preceded, by another supercritical fluid fractionation with supercritical CO2 under conditions adjusted so as to favour fractionation of the glyceride components.
(FR) On procède à l'épuration d'une composition contenant des glycérides d'acides gras polyinsaturés au moyen d'une opération de fractionnement par fluide supercritique dans une ou plusieurs colonnes à contre courant fonctionnant soit avec un reflux interne obtenu par un gradient de température le long de la colonne, soit avec un reflux externe obtenu par régulation externe de la pression, et en utilisant comme solvant un mélange de CO2 supercritique et d'un cosolvant polaire. Les impuretés oligomères et malodorantes notamment peuvent être éliminées avec succès grâce à ce procédé, lequel peut également, si nécessaire, être suivi ou précédé d'une autre opération de fractionnement par fluide supercritique avec du CO2 supercritique dans des conditions ajustées de façon à favoriser le fractionnement des composants des glycérides.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)