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1. (WO2001000572) PROCESS FOR PRODUCING $g(a)-SULFO-FATTY ACID ALKYL ESTER SALT
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2001/000572    International Application No.:    PCT/JP2000/004131
Publication Date: 04.01.2001 International Filing Date: 23.06.2000
Chapter 2 Demand Filed:    12.01.2001    
IPC:
C07C 303/06 (2006.01), C07C 303/22 (2006.01), C07C 303/24 (2006.01), C07C 309/17 (2006.01), C11D 1/28 (2006.01)
Applicants: LION CORPORATION [JP/JP]; 3-7, Honjo 1-chome, Sumida-ku, Tokyo 130-8644 (JP) (For All Designated States Except US).
TANO, Tetsuo [JP/JP]; (JP) (For US Only).
YOSHIYA, Masahisa [JP/JP]; (JP) (For US Only).
NISHIO, Taku [JP/JP]; (JP) (For US Only).
MATOBA, Seiji [JP/JP]; (JP) (For US Only).
MIYAWAKI, Yozo [JP/JP]; (JP) (For US Only)
Inventors: TANO, Tetsuo; (JP).
YOSHIYA, Masahisa; (JP).
NISHIO, Taku; (JP).
MATOBA, Seiji; (JP).
MIYAWAKI, Yozo; (JP)
Agent: SHIGA, Masatake; OR Building, 23-3, Takadanobaba 3-chome, Shinjuku-ku, Tokyo 169-8925 (JP)
Priority Data:
11/180946 25.06.1999 JP
Title (EN) PROCESS FOR PRODUCING $g(a)-SULFO-FATTY ACID ALKYL ESTER SALT
(FR) PROCEDE DE PRODUCTION D'UN SEL D'ALKYLESTER D'ACIDE GRAS $g(a)-SULFO
Abstract: front page image
(EN)A process which comprises: the step of contacting a fatty acid alkyl ester with a sulfonating gas in the presence of a discoloration inhibitor to sulfonate the ester; the step of esterifying the product of the sulfonation step with a lower alcohol; the step of neutralizing the system resulting from the esterification step to obtain a neutralization product; and the step of bleaching the neutralization product to obtain a bleached product. It preferably further contains the step of deodorizing the bleached product. Thus, an $g(a)-sulfo-fatty acid alkyl ester salt having a nearly white, light color and preferably reduced in odor can be produced through simplified steps.
(FR)L'invention concerne un procédé consistant : à mettre un alkylester d'acide gras au contact d'un gaz de sulfonation en présence d'un inhibiteur de décoloration de manière à sulfoner l'ester ; à estérifier le produit de l'opération de sulfonation à l'aide d'un alcool inférieur ; à neutraliser le système résultant de l'opération d'estérification afin d'obtenir un produit de neutralisation ; et à décolorer le produit de neutralisation pour obtenir un produit décoloré. Ledit procédé consiste également, de préférence, à désodoriser le produit décoloré. Ces opération simplifiées permettent d'obtenir un sel d'alkylester d'acide gras $g(a)-sulfo d'une couleur claire, presque blanche, et de préférence peu odorant.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CR, CU, CZ, DE, DK, DM, DZ, 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, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, 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: Japanese (JA)
Filing Language: Japanese (JA)