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1. (WO2006082242) A PROCESS FOR PRODUCING A WATER-ABSORBING MATERIAL HAVING A COATING OF ELASTIC FILMFORMING POLYMERS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2006/082242    International Application No.:    PCT/EP2006/050664
Publication Date: 10.08.2006 International Filing Date: 03.02.2006
IPC:
A61L 15/16 (2006.01)
Applicants: BASF AKTIENGESELLSCHAFT [DE/DE]; 67056 Ludwigshafen (DE) (For All Designated States Except US).
DANIEL, Thomas [DE/DE]; (DE) (For US Only).
RIEGEL, Ulrich [DE/DE]; (DE) (For US Only).
BRUHNS, Stefan [DE/DE]; (DE) (For US Only).
ELLIOTT, Mark [GB/DE]; (DE) (For US Only).
HÄBERLE, Karl [DE/DE]; (DE) (For US Only).
SCHMIDT, Mattias [DE/DE]; (DE) (For US Only).
MEYER, Axel [DE/DE]; (DE) (For US Only).
FOSSUM, Renae Dianna [US/US]; (US) (For US Only).
AUTRAN, Jean-Philippe Marie [FR/US]; (US) (For US Only)
Inventors: DANIEL, Thomas; (DE).
RIEGEL, Ulrich; (DE).
BRUHNS, Stefan; (DE).
ELLIOTT, Mark; (DE).
HÄBERLE, Karl; (DE).
SCHMIDT, Mattias; (DE).
MEYER, Axel; (DE).
FOSSUM, Renae Dianna; (US).
AUTRAN, Jean-Philippe Marie; (US)
Common
Representative:
BASF Aktiengesellschaft; 67056 Ludwigshafen (DE)
Priority Data:
60/649,540 04.02.2005 US
60/766,487 23.01.2006 US
Title (EN) A PROCESS FOR PRODUCING A WATER-ABSORBING MATERIAL HAVING A COATING OF ELASTIC FILMFORMING POLYMERS
(FR) PROCEDE DE PRODUCTION D'UN MATERIAU ABSORBANT L'EAU POURVU D'UN REVETEMENT DE POLYMERES FILMOGENES ELASTIQUES
Abstract: front page image
(EN)The present invention relates to a process for producing a water-absorbing material comprising the steps of a) spray-coating water-absorbing polymeric particles with an elastic film-forming polymer in a fluidized bed reactor in the range from 00C to 1500C and b) heat-treatment of the coated particles at a temperature above 50°C, wherein in step b) the duration of the heat-treatment is chosen that the CS-SFC value of the obtained polymeric particles is at least 10 % of the optimum CS-SFC value, and the water-absorbing material obtainable by this process.
(FR)La présente invention porte sur un procédé de production d'un matériau absorbant l'eau, ce procédé consistant à: a) enrober par pulvérisation des particules polymères absorbant l'eau avec un polymère filmogène élastique dans un réacteur à lit fluidisé, à une température comprise entre 0 °C et 150 °C et b) traiter thermiquement les particules enrobées à une température supérieure à 50 °C. A l'étape b), la durée du traitement thermique est choisie de sorte que la valeur CS-SFC des particules polymères obtenues représente au moins 10 % de la valeur CS-SFC optimum, le matériau absorbant l'eau pouvant ainsi être obtenu selon ce procédé.
Designated States: 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, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, 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, IS, IT, LT, LU, LV, MC, NL, PL, 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)