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1. (WO2004005226) PROCESS FOR PURIFYING PENTAFLUOROETHANE, PROCESS FOR PRODUCING THE SAME, AND USE THEREOF
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2004/005226    International Application No.:    PCT/JP2003/008295
Publication Date: 15.01.2004 International Filing Date: 30.06.2003
IPC:
C07C 17/10 (2006.01), C07C 17/20 (2006.01), C07C 17/21 (2006.01), C07C 17/389 (2006.01), C07C 19/08 (2006.01)
Applicants: SHOWA DENKO K. K. [JP/JP]; 13-9, Shiba Daimon 1-chome, Minato-ku, Tokyo 105-8518 (JP) (For All Designated States Except US).
OHNO, Hiromoto [JP/JP]; (JP) (For US Only).
OHI, Toshio [JP/JP]; (JP) (For US Only)
Inventors: OHNO, Hiromoto; (JP).
OHI, Toshio; (JP)
Agent: AOKI, Atsushi; A. AOKI, ISHIDA & ASSOCIATES, Toranomon 37 Mori Bldg., 5-1, Toranomon 3-chome, Minato-ku, Tokyo 105-8423 (JP)
Priority Data:
2002-192960 02.07.2002 JP
60/394,267 09.07.2002 US
Title (EN) PROCESS FOR PURIFYING PENTAFLUOROETHANE, PROCESS FOR PRODUCING THE SAME, AND USE THEREOF
(FR) PROCEDE DE PURIFICATION DE PENTAFLUOROETHANE, PROCEDE DE PRODUCTION DE PENTAFLUOROETHANE, ET UTILISATION DE CE PENTAFLUOROETHANE
Abstract: front page image
(EN)ABSTRACT A process comprising bringing crude pentafluoroethane containing at least one compound selected from the group consisting of hydrofluorocarbons containing one carbon atom, hydrochlorofluorocarbons containing one carbon atom and hydrochlorocarbons containing one carbon atom, into contact with an adsorbent comprising a zeolite having an average pore size of 3 to 6 Å and a silica/aluminum ratio of 2.0 or less and/or a carbonaceous adsorbent having an average pore size of 3.5 to 6 Å, to reduce the content of the compound. The purified gas can be used as a low temperature refrigerant or an etching gas.
(FR)La présente invention concerne un procédé par lequel on prend du pentafluoroéthane brute contenant au moins un composé appartenant au groupe des hydrofluorocarbures contenant un atome de carbone, des hydrochlorofluorocarbures contenant un atome de carbone et des hydrochlorocarbures contenant un atome de carbone, puis on le met en contact avec un adsorbant comprenant une zéolite dont le calibre de pores se situe entre 3 et 6 Å avec un rapport silice/aluminium n'excédant pas 2 et/ou un adsorbant carboné dont le calibre de pores se situe entre 3,5 et 6 Å, de façon à réduire le contenu du composé. Ce gaz purifié convient particulièrement comme réfrigérant basse température ou comme gaz d'attaque.
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, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, 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, HU, IE, IT, LU, MC, NL, 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)