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1. (WO2004007601) SHEETLIKE STRUCTURES OF WATER-ABSORBENT OPEN-CELLED FOAMS BASED ON CROSSLINKED ACID-FUNCTIONAL POLYMERS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2004/007601    International Application No.:    PCT/EP2003/007226
Publication Date: 22.01.2004 International Filing Date: 07.07.2003
IPC:
A61L 15/42 (2006.01), A61L 15/60 (2006.01)
Applicants: BASF AKTIENGESELLSCHAFT [DE/DE]; 67056 Ludwigshafen (DE) (For All Designated States Except US).
CHAMP, Samantha [GB/DE]; (DE) (For US Only).
HÄHNLE, Hans-Joachim [DE/DE]; (DE) (For US Only).
WANIOR, Mariola [DE/DE]; (DE) (For US Only)
Inventors: CHAMP, Samantha; (DE).
HÄHNLE, Hans-Joachim; (DE).
WANIOR, Mariola; (DE)
Common
Representative:
BASF AKTIENGESELLSCHAFT; 67056 LUDWIGSHAFEN (DE)
Priority Data:
60/395,328 12.07.2002 US
Title (EN) SHEETLIKE STRUCTURES OF WATER-ABSORBENT OPEN-CELLED FOAMS BASED ON CROSSLINKED ACID-FUNCTIONAL POLYMERS
(FR) STRUCTURE DE TYPE FEUILLE DE MOUSSES VISCOELASTIQUES A ABSORPTION D'EAU UTILISANT DES POLYMERES RETICULES A FONCTION ACIDE
Abstract: front page image
(EN)Sheetlike structures formed of water-absorbent, predominantly open-celled foams based on crosslinked acid-functional polymers having a Free Absorption Rate (FAR) of at least 11 g/g.sec for 0.9% by weight aqueous sodium chloride solution, the surface of said sheetlike structures having edge lengths x and y having been postcrosslinked so that the crosslink density decreases in the z direction between this surface and the opposite surface and the use of water-absorbent, predominantly open-celled foams based on crosslinked acid-functional polymers in the form of sheetlike structures having edge lengths x and y and wherein the crosslink density has a gradient in the z direction, as an acquisition, distribution and/or storage layer in hygiene articles.
(FR)L'invention concerne des structures de type feuilles formées de mousses à absorption d'eau et principalement viscoélastiques utilisant des polymères réticulés à fonction acide ayant une vitesse d'absorption libre (VAL) d'au moins 11 g/g.sec pour 0,9 % en poids d'une solution de chlorure de sodium aqueuse. L'invention concerne en outre la surface desdites structures présentant des longueurs de bord x et y post-réticulées de manière que la densité de réticulation diminue dans le sens z entre cette surface et la surface opposée ainsi que l'utilisation de mousses à absorption d'eau principalement viscoélastiques utilisant des polymères réticulés à fonction acide sous forme de structures de type feuilles présentant des longueurs de bords x et y et dont la densité de réticulation comporte un gradient dans le sens z, tenant lieu de couche d'acquisition, de distribution et/ou de stockage dans des articles sanitaires.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, 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, 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.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, 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, IT, LU, MC, NL, 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)