Patent ID: 6087282
Filing Date: 2000-07-11
Classification: A61K,C03C

Abstract:
A low-fusing porcelain composition having non-greening properties comprising;from about 57% to about 68% by weight SiO.sub.2 ;from about 3% to about 13% by weight Al.sub.2 O.sub.3 ;from about 20% to about 35% by weight of a flux comprising R.sub.2 O+RO, wherein R.sub.2 O is at least one of Na.sub.2 O, Li.sub.2 O, K.sub.2 O and mixtures thereof, and wherein RO is at least one of CaO, MgO, BaO and mixtures thereof;from about 0.8% to about 7% by weight of a flux comprising at least one of B.sub.2 O.sub.3, F and P.sub.2 O.sub.5 ; andfrom about 0.1% to about 2% of an oxygen release agent; whereby the oxygen release agent is an alkali nitrate.