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Machine translation
1. (WO2000060023) QUATERNARY NITROGEN CONTAINING AMPHOTERIC WATER SOLUBLE POLYMERS AND THEIR USE IN DRILLING FLUIDS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2000/060023    International Application No.:    PCT/EP2000/002884
Publication Date: 12.10.2000 International Filing Date: 31.03.2000
Chapter 2 Demand Filed:    05.10.2000    
IPC:
C09K 8/24 (2006.01)
Applicants: AKZO NOBEL N.V. [NL/NL]; Velperweg 76, NL-6824 BM Arnhem (NL) (For All Designated States Except US).
WARREN, Brent [CA/CA]; (CA) (For US Only).
VAN DER HORST, Peter, M. [NL/NL]; (NL) (For US Only).
VAN 'T ZELFDE, Theodorus, A. [NL/NL]; (NL) (For US Only)
Inventors: WARREN, Brent; (CA).
VAN DER HORST, Peter, M.; (NL).
VAN 'T ZELFDE, Theodorus, A.; (NL)
Agent: SCHALKWIJK, Pieter, Cornelis; Akzo Nobel N.V., Intellectual Property Dept. (Dept. AIP), P.O. Box 9300, NL-6800 SB Arnhem (NL)
Priority Data:
09/287,903 07.04.1999 US
2,268,734 07.04.1999 CA
Title (EN) QUATERNARY NITROGEN CONTAINING AMPHOTERIC WATER SOLUBLE POLYMERS AND THEIR USE IN DRILLING FLUIDS
(FR) AZOTE QUATERNAIRE A BASE DE POLYMERES SOLUBLES DANS L'EAU AMPHOTERE ET UTILISATION DANS DES LIQUIDES DE FORAGE
Abstract: front page image
(EN)The present invention generally relates to water based drilling fluid compositions which contain at least one viscosity builder and at least one rheological control agent wherein said rheological control agent is an amphoteric polymer, the cationic groups of said amphoteric polymer being quaternary ammonium groups.
(FR)L'invention concerne des compositions pour liquides de forage à base d'eau qui contiennent au moins un accumulateur de viscosité et au moins un agent de contrôle rhéologique. Selon l'invention ce dernier est un polymère amphotère, et les groupes cationiques de ce polymère amphotère sont des groupes d'ammonium quaternaires.
Designated States: AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CR, CU, CZ, DE, DK, DM, 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, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)