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1. (WO2012045738) PROCESS FOR INHIBITING UNWANTED FREE-RADICAL POLYMERIZATION OF ACRYLIC ACID PRESENT IN A LIQUID PHASE P
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2012/045738    International Application No.:    PCT/EP2011/067305
Publication Date: 12.04.2012 International Filing Date: 04.10.2011
IPC:
C07C 51/50 (2006.01), C07C 57/04 (2006.01)
Applicants: BASF SE [DE/DE]; 67056 Ludwigshafen (DE) (For All Designated States Except US).
BLUM, Till [DE/SG]; (SG) (For US Only).
ZUROWSKI, Peter [DE/DE]; (DE) (For US Only).
KORN, Tobias, Johannes [DE/DE]; (DE) (For US Only).
HAREMZA, Sylke [DE/DE]; (DE) (For US Only).
FRIESE, Thorsten [DE/DE]; (DE) (For US Only).
MARTIN, Friedrich-Georg [DE/DE]; (DE) (For US Only).
JÄGER, Ulrich [DE/DE]; (DE) (For US Only).
RISSEL, Steffen [DE/DE]; (DE) (For US Only).
SCHLIEPHAKE, Volker [DE/DE]; (DE) (For US Only)
Inventors: BLUM, Till; (SG).
ZUROWSKI, Peter; (DE).
KORN, Tobias, Johannes; (DE).
HAREMZA, Sylke; (DE).
FRIESE, Thorsten; (DE).
MARTIN, Friedrich-Georg; (DE).
JÄGER, Ulrich; (DE).
RISSEL, Steffen; (DE).
SCHLIEPHAKE, Volker; (DE)
Common
Representative:
BASF SE; 67056 Ludwigshafen (DE)
Priority Data:
10 2010 042 216.9 08.10.2010 DE
61/391,102 08.10.2010 US
Title (DE) VERFAHREN ZUR HEMMUNG DER UNERWÜNSCHTEN RADIKALISCHEN POLYMERISATION VON IN EINER FLÜSSIGEN PHASE P BEFINDLICHER ACRYLSÄURE
(EN) PROCESS FOR INHIBITING UNWANTED FREE-RADICAL POLYMERIZATION OF ACRYLIC ACID PRESENT IN A LIQUID PHASE P
(FR) PROCÉDÉ POUR INHIBER LA POLYMÉRISATION RADICALAIRE INDÉSIRABLE D'ACIDE ACRYLIQUE SE TROUVANT DANS UNE PHASE LIQUIDE P
Abstract: front page image
(DE)Verfahren zur Hemmung der unerwünschten radikalischen Polymerisation von in einer flüssigen Phase P befindlicher Acrylsäure, deren Acrylsäuregehalt wenigstens 10 Gew.-% beträgt und die, bezogen auf das Gewicht der in ihr enthaltenen Acrylsäure, zusätzlich wenigstens 100 Gew.-ppm Propionsäure und wenigstens 100 Gew.-ppm Glyoxal enthält, bei dem man der flüssigen Phase P wenigstens eine chemische Verbindung des Elements Kupfer zusetzt, und die dabei resultierenden, mit einer chemischen Verbindung des Elements Kupfer versetzten flüssigen Phasen P.
(EN)A process for inhibiting unwanted free-radical polymerization of acrylic acid present in a liquid phase P whose acrylic acid content is at least 10% by weight and which, based on the weight of the acrylic acid present therein, additionally comprises at least 100 ppm by weight of propionic acid and at least 100 ppm by weight of glyoxal, in which at least one chemical compound of the element copper is added to the liquid phase P, and the resulting liquid phases P to which a chemical compound of the element copper has been added.
(FR)L'invention concerne un procédé pour inhiber la polymérisation radicalaire indésirable d'acide acrylique se trouvant dans une phase liquide P dont la teneur en acide acrylique est d'au moins 10 % en poids et qui contient en outre au moins 100 ppm en poids d'acide propionique et au moins 100 ppm en poids de glyoxal, par rapport au poids de l'acide acrylique qu'elle contient. Selon ce procédé, au moins un composé chimique de l'élément cuivre est ajouté à la phase liquide P. L'invention concerne également les phases liquides P mélangées à un composé chimique de l'élément cuivre ainsi obtenues.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, 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, 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, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, 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, MD, 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, ML, MR, NE, SN, TD, TG).
Publication Language: German (DE)
Filing Language: German (DE)