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1. (WO2014207244) LEUCITE GLASS CERAMICS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2014/207244 International Application No.: PCT/EP2014/063775
Publication Date: 31.12.2014 International Filing Date: 27.06.2014
IPC:
C03C 3/087 (2006.01) ,C03C 3/091 (2006.01) ,C03C 4/00 (2006.01) ,C03C 10/00 (2006.01)
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
C
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
3
Glass compositions
04
containing silica
076
with 40% to 90% silica by weight
083
containing aluminium oxide or an iron compound
085
containing an oxide of a divalent metal
087
containing calcium oxide, e.g. common sheet or container glass
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
C
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
3
Glass compositions
04
containing silica
076
with 40% to 90% silica by weight
089
containing boron
091
containing aluminium
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
C
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
4
Compositions for glass with special properties
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
C
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
10
Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
Applicants:
QUEEN MARY AND WESTFIELD COLLEGE UNIVERSITY OF LONDON [GB/GB]; Mile End Road London E1 4NS, GB
Inventors:
THEOCHAROPOULOS, Antonios; IE
CHEN, Xiaohui; GB
KARPUKHINA, Natalia; GB
HILL, Robert; GB
CATTELL, Mike; GB
Agent:
LOCK, Graham James; GB
Priority Data:
1311663.728.06.2013GB
Title (EN) LEUCITE GLASS CERAMICS
(FR) VITROCÉRAMIQUE DE LEUCITE
Abstract:
(EN) A leucite glass-ceramic is prepared from a glass comprising : about 66.8 to about 71.9 mol % of SiO2, about 8.5 to about 10.6 mol % of Al2O3, about 9.5 to about 12.8 mol % of K2O, about 0.5 to about 4.0 mol % of CaO, about 0 to about 3.0 mol % of TiO2, about 1.8 to about 4.0 mol % of Na2O, about 0.1 to about 6.0 mol % of Li2O, about 0 to about 1.0 mol % of MgO, about 0 to about 3.0 mol % of Nb2O5, and about 0 to about 3.0 mol % of B2O3. The leucite glass-ceramic is prepared by subjecting the glass components to a nucleation heat treatment, followed by a growth heat treatment. The leucite glass-ceramic may be used in the fabrication of a Dental restoration using various processes, and may be used in the construction of Dental restorations such as ceramic Dental inlays, crowns, veneers, bridges, veneering materials for zirconium oxide restoration substrates, alumina oxide restoration substrates, or metal restoration substrates.
(FR) Une vitrocéramique de leucite est préparée à partir de verre comprenant : environ 66,8 à environ 71,9 % en mole de SiO2, environ 8,5 à environ 10,6 % en mole d'Al2O3, environ 9,5 à environ 12,8 % en mole de K2O, environ 0,5 à environ 4,0 % en mole de CaO, environ 0 à environ 3,0 % en mole de TiO2, environ 1,8 à environ 4,0 % en mole de Na2O, environ 0,1 à environ 6,0 % en mole de Li2O, environ 0 à environ 1,0 % en mole de MgO, environ 0 à environ 3,0 % en mole de Nb2O5 et environ 0 à environ 3,0 % en mole de B2O3. La vitrocéramique de leucite est préparée par soumission des composants de verre à un traitement thermique de nucléation, suivi par un traitement thermique de croissance. La vitrocéramique de leucite peut être utilisé dans la fabrication d'une restauration dentaire à l'aide de divers procédés, et peut être utilisé dans la construction de restaurations dentaires telles que des inlays dentaires, des couronnes, des facettes, des bridges, des matières de placage pour des substrats de restauration d'oxyde de zirconium, des substrats de restauration d'oxyde d'alumine ou des substrats de restauration de métal.
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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, 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, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, 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, 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)
Also published as:
EP3013762US20160137547