Transparent β-quartz glass-ceramics with low lithium content

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United States of America Patent

PATENT NO 11352290
APP PUB NO 20200189965A1
SERIAL NO

16620307

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Abstract

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The present application provides transparent glass-ceramics of β-quartz of composition containing a small content of lithium, articles constituted at least in part of said glass-ceramics, glasses precursors of said glass-ceramics, and also a method of preparing said articles. Said glass-ceramics have a composition, free of arsenic oxide and antimony oxide, except for inevitable traces, expressed as percentages by weight of oxides, containing: 62% to 68% of SiO2; 17% to 21% of AI2O3; 1% to <2% of Li2O; 1% to 4% of MgO; 1% to 6% of ZnO; 0 to 4% of BaO; 0 to 4% of SrO; 0 to 1% of CaO; 1% to 5% of TiO2; 0 to 2% of ZrO2; 0 to 1% of Na2O; 0 to 1% of K2O; with Na2O+K2O+BaO+SrO+CaO<6%; optionally up to 2% of at least one fining agent comprising SnO2; and optionally up to 2% of at least one coloring agent.

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Patent Owner(s)

Patent OwnerAddress
EUROKERA77640 JOUARRE

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Comte, Marie Fontenay aux Roses, FR 9 37
Lehuede, Philippe Dammarie les Lys, FR 26 302
Ogier, Thiphaine Paris, FR 1 4

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