Following is one of the patent documents most requested by researchers using CAS electronic products.
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CAS indexed 18 chemical substances from this document.
CAS subject entries for this document include: Ionic liquids. | |
CAPLUS COPYRIGHT 2005 ACS on STN
| TITLE:
| A preparation and purification of ionic liquids |
| INVENTOR(S):
| Choi, Doo Seong; Choi, Dong Woong; Park, Eun Ju; Chang, Suk Ku; Byun, Il Suk; Kim, Wan Joo |
| PATENT ASSIGNEE(S):
| Chemtech Research Incorporation, S. Korea |
| SOURCE:
| PCT Int. Appl., 31 pp. CODEN: PIXXD2 |
| LANGUAGE:
| English |
PATENT INFORMATION: PATENT NO. KIND DATE APPLICATION NO. DATE
--------------- ---- -------- -------------------- --------
WO 2004080974 A1 20040923 WO 2004-KR499 20040311
W: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH,
CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD,
GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC,
LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, 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
RW: BW, GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZM, ZW, AM, AZ,
BY, KG, KZ, MD, RU, TJ, TM, AT, BE, BG, CH, CY, CZ, DE, DK, EE,
ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PL, PT, RO, SE, SI,
SK, TR, BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN,
TD, TG
ABSTRACT:
The invention relates to a prepn. and purifn. of ionic liq. High purity ionic liqs. are useful as solvents for org., inorg. and biochem. reactions or as electrolytic solns. of storage batteries, secondary batteries, or fuel batteries. Org. halide salts, org. salts, halide residues, acid residues and excess alkali metals were removed from unpurified ionic liqs. using liq./liq. continuous extn. For instance, high purity N-butylpyridinium trifluoromethanesulfonate was prepd. from N-butylpyridinium chloride and potassium trifluoromethanesulfonate with a yield of 95% (example 13).
Updated 5/11/2007 12:17:59 PM
