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Sinterable lithium disilicate glass ceramic

  • US 5,968,856 A
  • Filed: 09/05/1997
  • Issued: 10/19/1999
  • Est. Priority Date: 09/05/1996
  • Status: Expired due to Term
First Claim
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1. A lithium disilicate glass ceramic, which comprises the following components:

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    space="preserve" listing-type="tabular">______________________________________ Component Wt. % ______________________________________ SiO.sub.2 57.0 to 80.0 Al.sub.2 O.sub.3 0 to 5.0 La.sub.2 O.sub.3 0.1 to 6.0 MgO 0 to 5.0 ZnO 0 to 8.0 K.sub.2 O 0 to 13.5 Li.sub.2 O 11.0 to 19.0 P.sub.2 O.sub.5 0 to 11.0 Color components 0 to 8.0 Additional components 0 to 6.0 ______________________________________ whereinAl2 O3 +La2 O3 equals 0.1 to 7.0 wt. % andMgO+ZnO equals 0.1 to 9.0 wt. %.

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