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1. (WO2009064022) PROCESS FOR PRODUCING ( Z) - AND (E) -1, 1, 1, 2, 3-PENTAFLUOROPROPENE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2009/064022    International Application No.:    PCT/JP2008/071063
Publication Date: 22.05.2009 International Filing Date: 13.11.2008
C07C 17/358 (2006.01), C07C 17/383 (2006.01), C07C 21/18 (2006.01)
Applicants: DAIKIN INDUSTRIES, LTD. [JP/JP]; Umeda Center Building, 4-12, Nakazaki-Nishi 2-Chome, Kita-ku, Osaka-shi, Osaka, 5308323 (JP) (For All Designated States Except US).
TAKAHASHI, Kazuhiro [JP/JP]; (JP) (For US Only)
Inventors: TAKAHASHI, Kazuhiro; (JP)
Agent: TANAKA, Mitsuo; AOYAMA & PARTNERS, IMP Building, 3-7, Shiromi 1-chome, Chuo-ku, Osaka-shi, Osaka, 5400001 (JP)
Priority Data:
60/988,615 16.11.2007 US
Abstract: front page image
(EN)A mixture comprising a Z-isomer and an E-isomer of 1,1,1,2,3-pentafluoropropene (HFC-1225ye) is distilled to separate it into a first stream composed substantially of either one of the Z-isomer and the E-isomer, and a second stream comprising the Z-isomer and the E-isomer; and the second stream is subjected to an isomerization reaction to obtain a third stream having an increased ratio of the one isomer therein from that in the second stream; and then the third stream is reused as at least a part of the above mixture as a raw material. The order of the isomerization reaction and the distillation may be reversed. Thus, either one of the Z-isomer and E-isomer can be efficiently produced.
(FR)La présente invention concerne un procédé selon lequel un mélange comportant un isomère Z et un isomère E de 1,1,1,2,3-pentafluoropropène (HFC-1225ye) est distillé pour le séparer en un premier flux constitué sensiblement d'un parmi l'isomère Z et l'isomère E, et un second flux comportant l'isomère Z et l'isomère E; et le second flux est soumis à une réaction d'isomérisation pour obtenir un troisième flux contenant un rapport accru d'un isomère par rapport à celui dans le second flux; ensuite le troisième flux est utilisé au moins sous la forme d'une partie dudit mélange comme matière première. L'ordre de la réaction d'isomérisation et de distillation peut être inversé. Ainsi, on peut produire efficacement un parmi l'isomère Z et l'isomère E.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MT, NL, NO, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)