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1. (WO1998051657) PROCESSES FOR PRODUCING CITRATE ESTERS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/1998/051657 International Application No.: PCT/US1998/009635
Publication Date: 19.11.1998 International Filing Date: 12.05.1998
Chapter 2 Demand Filed: 09.12.1998
IPC:
C07C 67/08 (2006.01)
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
67
Preparation of carboxylic acid esters
08
by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
Applicants:
FRAPPIER, Edward, P. [US/US]; US (UsOnly)
DAVIS, James, E. [US/US]; US (UsOnly)
GRENDZE, Martin [US/US]; US (UsOnly)
SCRIVEN, Eric, F., V. [US/US]; US (UsOnly)
WYETH, John, T. [US/US]; US (UsOnly)
CHIU, Kuen-Wai [US/US]; US (UsOnly)
REILLY INDUSTRIES, INC. [US/US]; Suite 1500 300 N. Meridian Street Indianapolis, IN 46204, US (AllExceptUS)
Inventors:
FRAPPIER, Edward, P.; US
DAVIS, James, E.; US
GRENDZE, Martin; US
SCRIVEN, Eric, F., V.; US
WYETH, John, T.; US
CHIU, Kuen-Wai; US
Agent:
MCNETT, John, C. ; Woodard, Emhardt, Naughton, Moriarty & McNett Bank One Center/Tower Suite 3700 111 Monument Circle Indianapolis, IN 46204, US
Priority Data:
60/046,25112.05.1997US
Title (EN) PROCESSES FOR PRODUCING CITRATE ESTERS
(FR) PROCEDES DE PRODUCTION D'ESTERS DE CITRATE
Abstract:
(EN) Described are processes for producing citrate esters in an economic fashion. Esters are prepared by esterification of a citric acid-containing fermentation broth having been treated to remove cations and optionally other impurities, but containing sugar(s). Esters are also prepared by reacting an impure aqueous citric acid source with an alcohol to provide a heterogeneous acqueous/organic reacted mixture, wherein the organic phase contains the ester and the acqueous phase retains water-soluble impurities. A liquid phase separation is then used to separate the organic and aqueous phases, conveniently separating the impurities from the product and avoiding the energy-intensive distillation of water from the reaction medium.
(FR) La présente invention concerne des procédés permettant de produire des esters de citrate de façon économique. On prépare les esters par estérification d'un bouillon de fermentation contenant de l'acide citrique qui a subi un traitement destiné à en enlever les cations et, facultativement, d'autres impuretés, mais qui contient du/des sucre(s). On prépare également les esters en mettant à réagir une source d'acide citrique aqueuse impure et un alcool afin d'obtenir un mélange de réaction hétérogène aqueux/organique, dans lequel la phase organique contient l'ester et la phase aqueuse retient les impuretés hydrosolubles. Une séparation de phase liquide permet ensuite de séparer les phases organique et aqueuse et, ce faisant, de séparer sans inconvénient les impuretés du produit tout en évitant la grande consommation d'énergie que requiert la distillation de l'eau à partir du milieu de réaction.
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, CY, 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)