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1. (WO2017186685) METHOD FOR PREPARING AN AQUEOUS POLYACRYLAMIDE SOLUTION
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Pub. No.: WO/2017/186685 International Application No.: PCT/EP2017/059736
Publication Date: 02.11.2017 International Filing Date: 25.04.2017
IPC:
C08F 20/56 (2006.01) ,C07C 231/06 (2006.01) ,C12N 9/78 (2006.01) ,C12P 13/02 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
20
Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide, or nitrile thereof
02
Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
52
Amides or imides
54
Amides
56
Acrylamide; Methacrylamide
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
231
Preparation of carboxylic acid amides
06
from nitriles by transformation of cyano groups into carboxamide groups
C CHEMISTRY; METALLURGY
12
BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
N
MICRO-ORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICRO-ORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
9
Enzymes, e.g. ligases (6.); Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating, or purifying enzymes
14
Hydrolases (3.)
78
acting on carbon to nitrogen bonds other than peptide bonds (3.5)
C CHEMISTRY; METALLURGY
12
BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
P
FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
13
Preparation of nitrogen-containing organic compounds
02
Amides, e.g. chloramphenicol
Applicants: BASF SE[DE/DE]; Carl-Bosch-Str. 38 67056 Ludwigshafen am Rhein, DE
Inventors: SPRAFKE, Hazel Anne; DE
EL-TOUFAILI, Faissal-Ali; DE
LANGLOTZ, Bjoern; DE
BARRATT, John; GB
BRINGMANN, Tobias; DE
FONSECA ZEPEDA, Gabriela Eugenia; DE
JECK, Sandra; DE
LOESCH, Dennis; DE
MECKELNBURG, Dirk; DE
OSTERMAYR, Markus; DE
SCHUBE, Bernd; DE
SOETJE, Oliver; DE
Agent: HERZOG FIESSER & PARTNER PATENTANWÄLTE PARTG MBB; Stößel, Matthias Dudenstraße 46 68167 Mannheim, DE
Priority Data:
16167082.326.04.2016EP
Title (EN) METHOD FOR PREPARING AN AQUEOUS POLYACRYLAMIDE SOLUTION
(FR) PROCÉDÉ DE PRÉPARATION D'UNE SOLUTION AQUEUSE DE POLYACRYLAMIDE
Abstract:
(EN) A method for preparing an aqueous polyacrylamide solution is disclosed. The method comprises: hydrating acrylonitrile in water in presence of a biocatalyst capable of converting acrylonitrile to acrylamide so as to obtain an acrylamide solution, directly polymerizing the acrylamide solution so as to obtain a polyacrylamide gel, and directly dissolving the polyacrylamide gel by addition of water so as to obtain an aqueous polyacrylamide solution, wherein the polyacrylamide gel is dissolved by means of an mixer comprising a rotatable impeller and a cylindrical array of radially oriented blade members circumferentially surrounding the impeller with radial discharge orifices between adjacent blades.
(FR) L'invention concerne un procédé de préparation d'une solution aqueuse de polyacrylamide. Le procédé consiste à hydrater l'acrylonitrile dans de l'eau en présence d'un biocatalyseur capable de convertir l'acrylonitrile en acrylamide pour obtenir une solution d'acrylamide, à polymériser directement la solution d'acrylamide pour obtenir un gel de polyacrylamide, et à dissoudre directement le gel de polyacrylamide par addition d'eau pour obtenir une solution aqueuse de polyacrylamide, le gel de polyacrylamide étant dissous au moyen d'un mélangeur comprenant un agitateur rotatif et un réseau cylindrique de pales orientées radialement entourant de manière circonférentielle l'agitateur avec des orifices de décharge radiaux entre les pales adjacentes.
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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, DJ, 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, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, 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 (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)