WO2004071979A3 - Glass ceramics - Google Patents

Glass ceramics Download PDF

Info

Publication number
WO2004071979A3
WO2004071979A3 PCT/GB2004/000574 GB2004000574W WO2004071979A3 WO 2004071979 A3 WO2004071979 A3 WO 2004071979A3 GB 2004000574 W GB2004000574 W GB 2004000574W WO 2004071979 A3 WO2004071979 A3 WO 2004071979A3
Authority
WO
WIPO (PCT)
Prior art keywords
glass ceramics
fluormica
crystallising
inlays
industrially
Prior art date
Application number
PCT/GB2004/000574
Other languages
French (fr)
Other versions
WO2004071979A2 (en
Inventor
David Wood
Stuart Maskill
Nigel Bubb
Original Assignee
Univ Leeds
David Wood
Stuart Maskill
Nigel Bubb
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ Leeds, David Wood, Stuart Maskill, Nigel Bubb filed Critical Univ Leeds
Publication of WO2004071979A2 publication Critical patent/WO2004071979A2/en
Publication of WO2004071979A3 publication Critical patent/WO2004071979A3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C4/00—Compositions for glass with special properties
    • C03C4/0007—Compositions for glass with special properties for biologically-compatible glass
    • C03C4/0021—Compositions for glass with special properties for biologically-compatible glass for dental use
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/802—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics
    • A61K6/824—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics comprising transition metal oxides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/831—Preparations for artificial teeth, for filling teeth or for capping teeth comprising non-metallic elements or compounds thereof, e.g. carbon
    • A61K6/836—Glass
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C10/00—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
    • C03C10/16—Halogen containing crystalline phase

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Veterinary Medicine (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Public Health (AREA)
  • Plastic & Reconstructive Surgery (AREA)
  • Epidemiology (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Molecular Biology (AREA)
  • Dispersion Chemistry (AREA)
  • Glass Compositions (AREA)

Abstract

The present invention relates to glass ceramics, in particular to machinable glass ceramics based on mica (eg fluormica) and to a process for preparing such glass ceramics by melting and crystallising magnesium fluoro alumino-silicate glasses and to their uses such as in dental crowns and inlays or industrially where there is a requirement for good electrical insulation and/or low thermal conductivity coupled with excellent machinability.
PCT/GB2004/000574 2003-02-12 2004-02-12 Glass ceramics WO2004071979A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0303157.2A GB0303157D0 (en) 2003-02-12 2003-02-12 A glass-ceramic
GB0303157.2 2003-02-12

Publications (2)

Publication Number Publication Date
WO2004071979A2 WO2004071979A2 (en) 2004-08-26
WO2004071979A3 true WO2004071979A3 (en) 2005-01-20

Family

ID=9952856

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2004/000574 WO2004071979A2 (en) 2003-02-12 2004-02-12 Glass ceramics

Country Status (2)

Country Link
GB (1) GB0303157D0 (en)
WO (1) WO2004071979A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8021999B2 (en) 2008-06-23 2011-09-20 Corning Incorporated High strength machinable glass-ceramics
WO2020205237A1 (en) 2019-04-02 2020-10-08 Corning Incorporated Chemically strengthenable machinable glass-ceramics

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3689293A (en) * 1970-07-08 1972-09-05 Corning Glass Works Mica glass-ceramics
US4536452A (en) * 1983-10-24 1985-08-20 Corning Glass Works Spontaneously-formed machinable glass-ceramics
US4652312A (en) * 1985-11-04 1987-03-24 Corning Glass Works Glass-ceramic compositions for dental constructs
JPH02208238A (en) * 1989-02-07 1990-08-17 Hoya Corp Glass ceramics and production thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3801295A (en) 1972-08-01 1974-04-02 Corning Glass Works Mica glass-ceramics

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3689293A (en) * 1970-07-08 1972-09-05 Corning Glass Works Mica glass-ceramics
US4536452A (en) * 1983-10-24 1985-08-20 Corning Glass Works Spontaneously-formed machinable glass-ceramics
US4652312A (en) * 1985-11-04 1987-03-24 Corning Glass Works Glass-ceramic compositions for dental constructs
JPH02208238A (en) * 1989-02-07 1990-08-17 Hoya Corp Glass ceramics and production thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 0145, no. 05 (C - 0775) 5 November 1990 (1990-11-05) *
TOMOKO UNO ET AL: "HIGH-STRENGTH MICA-CONTAINING GLASS-CERAMICS", JOURNAL OF THE AMERICAN CERAMIC SOCIETY, AMERICAN CERAMIC SOCIETY. COLUMBUS, US, vol. 74, no. 12, 1 December 1991 (1991-12-01), pages 3139 - 3141, XP000257664, ISSN: 0002-7820 *

Also Published As

Publication number Publication date
GB0303157D0 (en) 2003-03-19
WO2004071979A2 (en) 2004-08-26

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