WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO2014210191) IMPROVED PROCESS FOR REFINING NITRILES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2014/210191    International Application No.:    PCT/US2014/044145
Publication Date: 31.12.2014 International Filing Date: 25.06.2014
IPC:
C07C 253/34 (2006.01), C07C 255/04 (2006.01)
Applicants: INVISTA TECHNOLOGIES S.A R.L. [LU/CH]; Zweigniederlassung St. Gallen Kreuzacherstrasse 9 9000 St. Gallen (CH)
Inventors: KANTAK, Milind V.; (US)
Priority Data:
61/839,435 26.06.2013 US
Title (EN) IMPROVED PROCESS FOR REFINING NITRILES
(FR) PROCÉDÉ AMÉLIORÉ POUR LE RAFFINAGE DE NITRILES
Abstract: front page image
(EN)The present invention provides an improved process for preferentially concentrating 2-methylglutaronitrile from mixtures comprising 2-methyl-glutaronitrile and other C6 nitriles having very close relative volatilities, for example, 2-ethylsuccinonitrile and adiponitrile, in a particular integrated, continuous distillative refining process, advantageously utilizing a carefully staged distillation apparatus train and by operating in an optimized window for effective separation.
(FR)La présente invention concerne un procédé amélioré destiné de préférence à concentrer du 2-méthylglutaronitrile à partir de mélanges comprenant du 2-méthyl-glutaronitrile et d'autres nitriles C6 présentant des volatilités relatives très proches, tels que le 2-éthylsuccinonitrile et l'adiponitrile, dans un procédé de raffinage par distillation continu intégré particulier, utilisant avantageusement un ensemble d'appareils de distillation judicieusement étagés et fonctionnant dans une fenêtre optimisée en vue d'une séparation efficace.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, 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, IR, IS, JP, KE, KG, 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, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)