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1. (WO1999011603) PROCESS FOR PREPARING ASPARTIC ACID FROM AMMONIUM ASPARTATE, AND CONTINUOUS PROCESS FOR PREPARING POLYSUCCINIMIDE INVOLVING SUCH PROCESS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1999/011603    International Application No.:    PCT/EP1998/005268
Publication Date: 11.03.1999 International Filing Date: 19.08.1998
Chapter 2 Demand Filed:    22.02.1999    
IPC:
C07C 227/18 (2006.01), C07C 229/24 (2006.01), C08G 69/10 (2006.01), C08G 73/10 (2006.01)
Applicants: AMYLUM BELGIUM N.V. [BE/BE]; Burchtstraat 10, B-9300 Aalst (BE) (AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BY, CA, CF, CG, CH, CI, CM, CN, CU, CY, CZ, DE, DK, EE, ES, FI, FR, GA, GB, GE, GH, GM, GN, GR, GW, HR, HU, ID, IE, IL, IS, IT, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MC, MD, MG, MK, ML, MN, MR, MW, MX, NE, NL, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, SN, SZ, TD, TG, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW only).
CAMI, Pierre [FR/FR]; (FR) (For US Only).
LECOMTE, Didier [FR/FR]; (FR) (For US Only).
EYAL, Aharon [IL/IL]; (IL) (For US Only).
VITNER, Aher [IL/IL]; (IL) (For US Only)
Inventors: CAMI, Pierre; (FR).
LECOMTE, Didier; (FR).
EYAL, Aharon; (IL).
VITNER, Aher; (IL)
Agent: LEHERTE, Georges; K.O.B. N.V., Kennedypark 31c, B-8500 Kortrijk (BE)
Priority Data:
97202722.1 04.09.1997 EP
Title (EN) PROCESS FOR PREPARING ASPARTIC ACID FROM AMMONIUM ASPARTATE, AND CONTINUOUS PROCESS FOR PREPARING POLYSUCCINIMIDE INVOLVING SUCH PROCESS
(FR) PROCEDE DE PREPARATION D'ACIDE ASPARTIQUE A PARTIR D'ASPARTATE D'AMMONIUM ET PROCESSUS DE PREPARATION EN CONTINU DE POLYSUCCINIMIDE FAISANT INTERVENIR CE PROCEDE
Abstract: front page image
(EN)The invention relates to a process for the (continuous) preparation of aspartic acid by decomposition of ammonium aspartate in which a concentrated aqueous solution of ammonium aspartate is constantly introduced into a diluent in which water has a low solubility, which diluent is maintained at a temperature at which ammonium aspartate decomposes into aspartic acid and ammonia, and in which the water and the formed ammonia are continuously removed. The invention also relates to a (continuous) process for preparing polysuccinimide starting from fumaric or maleic acid and ammonia involving said process for preparing aspartic acid from ammonium aspartate.
(FR)La présente invention concerne un procédé de préparation (en continu) d'acide aspartique par décomposition d'aspartate d'ammonium. Ce procédé consiste à introduire, de manière continue, une solution aqueuse concentrée d'aspartate d'ammonium dans un diluant dans lequel l'eau présente une faible solubilité. Ce diluant est maintenu à une température à laquelle l'aspartate d'ammonium se décompose en acide aspartique et en ammoniaque, l'eau et l'ammoniaque formé étant retirés de manière continue. La présente invention concerne également un processus de préparation (en continu) de polysuccinimide à partir d'acide fumarique ou d'acide maléïque et d'ammoniaque faisant intervenir le procédé de préparation d'acide aspartique à partir de l'aspartate d'ammonium.
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, HR, 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 (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (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, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)