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1. (WO2017182296) SILICA-COATED EXPANDING AGENTS AND THEIR USE IN CEMENTITIOUS SYSTEMS
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.:    WO/2017/182296    International Application No.:    PCT/EP2017/058408
Publication Date: 26.10.2017 International Filing Date: 07.04.2017
IPC:
C04B 28/02 (2006.01), C04B 40/06 (2006.01), C04B 20/10 (2006.01)
Applicants: BASF SE [DE/DE]; Carl-Bosch-Straße 38 67056 Ludwigshafen am Rhein (DE)
Inventors: KIERAT, Radoslaw; (DE).
MUELLER, Michael Klemens; (DE).
KEMPTER, Andreas; (DE).
LAFUENTE CERDA, Oscar; (DE).
BERGNER, Kai; (DE)
Agent: BASF IP ASSOCIATION; BASF SE G-FLP - C006 67056 Ludwigshafen (DE)
Priority Data:
16165787.9 18.04.2016 EP
Title (EN) SILICA-COATED EXPANDING AGENTS AND THEIR USE IN CEMENTITIOUS SYSTEMS
(FR) AGENTS D'EXPANSION ENROBÉS DE SILICE ET LEUR UTILISATION DANS DES SYSTÈMES CIMENTAIRES
Abstract: front page image
(EN)The invention relates to a process for preparing silica-coated particles of an inorganic expanding agent, the silica-coated particles and their use. The silica-coated particles show a delayed release of the expanding agent particularly in alkaline medium and at elevated temperatures. They are therefore useful in the oil and construction industry.
(FR)L'invention concerne un procédé permettant de préparer des particules d'un agent d'expansion inorganique enrobées de silice, les particules enrobées de silice et leur utilisation. Les particules enrobées de silice libèrent l'agent d'expansion de manière différée, en particulier dans un milieu alcalin et à des températures élevées. Les particules sont donc utiles dans l'industrie du pétrole et de la construction.
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 (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, 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, KM, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)