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1. (WO2007003566) PREPARATION OF GLASS-CERAMICS OF &bgr;-QUARTZ AND/OR OF &bgr;-SPODUMENE, OF ARTICLES MADE FROM SUCH GLASS-CERAMICS ; GLASS-CERAMICS, ARTICLES MADE FROM SAID GLASS-CERAMICS AND PRECURSOR GLASSES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/003566 International Application No.: PCT/EP2006/063666
Publication Date: 11.01.2007 International Filing Date: 29.06.2006
IPC:
C03C 3/112 (2006.01) ,C03C 10/14 (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
11
containing halogen or nitrogen
112
containing fluorine
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
14
Silica crystalline phase, e.g. stuffed quartz, cristobalite
Applicants:
EUROKERA [FR/FR]; B.P. 1 F-77640 Jouarre, FR (AllExceptUS)
COMTE, Marie [FR/FR]; FR (UsOnly)
Inventors:
COMTE, Marie; FR
Agent:
LE ROUX, Martine ; 158 Rue de L'Université F-75340 Paris Cedex 07, FR
Priority Data:
050668430.06.2005FR
Title (EN) PREPARATION OF GLASS-CERAMICS OF &bgr;-QUARTZ AND/OR OF &bgr;-SPODUMENE, OF ARTICLES MADE FROM SUCH GLASS-CERAMICS ; GLASS-CERAMICS, ARTICLES MADE FROM SAID GLASS-CERAMICS AND PRECURSOR GLASSES
(FR) PREPARATION DE VITROCERAMIQUES DE $G(B)-QUARTZ ET/OU DE $G(B)-SPODUMENE, ARTICLES REALISES A PARTIR DE CES VITROCERAMIQUES, VITROCERAMIQUES, ARTICLES REALISES A PARTIR DE CES VITROCERAMIQUES ET DE VERRES PRECURSEURS
Abstract:
(EN) The invention relates to: a method of preparing glass-ceramics of &bgr;-quartz and/or of &bgr;-spodumene; a method of preparing articles made from said glass-ceramics; novel glass-ceramics of &bgr;-quartz and/or of &bgr;-spodumene; articles made from said novel glass-ceramics; and lithium aluminosilicate glasses, which are precursors of such novel glass-ceramics. The present invention relates to the joint use, as agent for fining the glass-ceramic glass precursor, of fluorine and at least one oxide of a multivalent element.
(FR) La présente invention concerne un procédé pour préparer des vitrocéramiques de ß-quartz et/ou de ß-spodumène, un procédé pour réaliser des articles à partir de ces vitrocéramiques, de nouveaux vitrocéramiques de ß-quartz et/ou de ß-spodumène, des articles réalisés à partir des nouveaux vitrocéramiques et de verres d'aluminosilicate de lithium qui sont des précurseurs de ces nouveaux vitrocéramiques. L'invention a également pour objet l'utilisation conjointe, en tant qu'agent pour affiner le verre précurseur de vitrocéramique, de fluor et d'au moins un oxyde d'un élément plurivalent.
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, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, 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, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, 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, 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)
Also published as:
KR1020080023360EP1899276JP2009500282ES2359899CN101213152FR2887870