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1. (WO2003000637) PROCESS FOR PREPARATION OF &agr;,&agr;−BIS(HYDROXYMETHYL)− CARBOXYLIC ACIDS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2003/000637 International Application No.: PCT/JP2002/006225
Publication Date: 03.01.2003 International Filing Date: 21.06.2002
Chapter 2 Demand Filed: 21.01.2003
IPC:
C07C 51/43 (2006.01)
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
51
Preparation of carboxylic acids or their salts, halides, or anhydrides
42
Separation; Purification; Stabilisation; Use of additives
43
by change of the physical state, e.g. crystallisation
Applicants: KONISHI, Shinichi[JP/JP]; JP (UsOnly)
KINOSHITA, Hirotaka[JP/JP]; JP (UsOnly)
FUKUDA, Yukitoshi[JP/JP]; JP (UsOnly)
KYOWA YUKA CO., LTD.[JP/JP]; 6-1, Ohtemachi 1-chome Chiyoda-ku, Tokyo 100-8185, JP (AllExceptUS)
Inventors: KONISHI, Shinichi; JP
KINOSHITA, Hirotaka; JP
FUKUDA, Yukitoshi; JP
Priority Data:
2001-18755221.06.2001JP
Title (EN) PROCESS FOR PREPARATION OF &agr;,&agr;−BIS(HYDROXYMETHYL)− CARBOXYLIC ACIDS
(FR) PROCEDE DE PREPARATION D'ACIDES $G(A),$G(A)-BIS(HYDROXYMETHYL) CARBOXYLIQUES
Abstract:
(EN) A process for the preparation of &agr;,&agr;−bis− (hydroxymethyl)carboxylic acids, characterized by comprising the step of subjecting a mixture containing an &agr;,&agr;− bis(hydroxymethyl)carboxylic acid represented by the general formula (‖) to crystallization in an acetic acid ester in the presence of 1 to 2 wt% of water: (‖) wherein R is alkyl, cycloalkyl, or aryl.
(FR) L'invention concerne un procédé de préparation d'acides $g(a),$g(a)-bis(hydroxyméthyl) carboxyliques. Ce procédé se caractérise en ce qu'il consiste à soumettre à la cristallisation un mélange contenant un acide $g(a),$g(a)-bis(hydroxyméthyl) carboxylique représenté par la formule générale (I), dans un ester d'acide acétique, en présence de 1 à 2 % en poids d'eau: (I), dans laquelle R représente alkyle, cycloalkyle ou aryle.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, KE, KG, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, OM, PH, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZM, 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, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)