THERMOSENSITIVE GLASS Russian patent published in 1997 - IPC

FIELD: production of dishes, decorative and artistic articles. SUBSTANCE: thermosensitive glass comprises, mas.%: silicium oxide having essential formula SiO₂, 45-75.4; boron oxide having essential formula B₂O₃,, 1-5; zinc oxide having essential formula ZnO, 7-10; calcium oxide having essential formula CaO, 0.9-5; sodium oxide having essential formula NaO, 13.8-18; one or more oxides of group RO (strontium oxide, magnesium oxide, barium oxide having essential formula SrO, MgO, BaO respectively), 1.8-14; zinc sulfide having essential formula ZnS, 0.1-3. Boiling point of glass is 1420-1440 C. EFFECT: improved quality. 2 tbl