The invention relates to a method for producing aluminosilicate glass that is devoid of alkali and that has a B2 O3 content of between 0 and <5 wt.-% and a BaO content in excess of 5.5 wt.-%. Said method is characterised by the addition of between 0.05 wt.-% and 1.0 wt.-% SnO2 during the prepar
The invention relates to a method for producing aluminosilicate glass that is devoid of alkali and that has a B2 O3 content of between 0 and <5 wt.-% and a BaO content in excess of 5.5 wt.-%. Said method is characterised by the addition of between 0.05 wt.-% and 1.0 wt.-% SnO2 during the preparation of the mixture.
대표청구항▼
What is claimed is: 1. A process for producing an alkali-free aluminosilicate glass comprising charging an alkali-free aluminosilicate glass batch comprising, in % by weight based on oxide, B2 O3<5, BaO>5.5, and SnO 2, 0.05-1.0; and subsequently melting and hot forming a resultant
What is claimed is: 1. A process for producing an alkali-free aluminosilicate glass comprising charging an alkali-free aluminosilicate glass batch comprising, in % by weight based on oxide, B2 O3<5, BaO>5.5, and SnO 2, 0.05-1.0; and subsequently melting and hot forming a resultant alkali-free aluminosilicate glass. 2. A process according to claim 1, wherein the alkali-free aluminosilicate glass batch (in % by weight based on oxide) comprises: SiO2 46+14 64 Al2O3 12+14 26 B2O 3 +12 +12 0+14 +21 5 MgO 0+14 7 CaO +11 3+14 14 SrO +11 0+14 11 BaO +11 6+14 25 ZrO2 0+14 5 TiO2 +11 +12 0+14 0.6 P2O5 0+14 9 SnO2 0.05+14 1.+10 3. A process according to claim 2, wherein the alkali-free aluminosilicate glass batch (in % by weight based on oxide) comprises: SiO2 +22 55+ 14 64+12 +12 Al2O3 13+14 18 B2 O3 +12 +12 0+14 +21 5 MgO 0+14 7 CaO +11 5+14 14 SrO 0+14 8 BaO +11 6+14 17 ZrO2 0+14 2 TiO2 +11 +12 0+14 0.5 SnO2 0.05+14 1.+10 4. process according to claim 3, wherein the alkali-free aluminosilicate glass batch (in % by weight based on oxide) comprises: SiO2 59+14 62 Al2O3 13.5+14 15.5 B2O 3 +12 +12 3+14 +21 5 MgO 2.5+14 5+11 +12 CaO +11 8.2+14 10.5 BaO 8.5+14 9. 5 ZrO2 +11 +12 0+14 1.5 TiO2 +11 +12 0+14 0.5 SnO2 0.05+14 1.+10 5. A process according to claim 3, wherein the alkali-free aluminosilicate glass batch (in % by weight based on oxide) comprises: SiO2 +22 58+ 14 62+12 +12 Al2O3 +11 +12 14+14 17.5 B2O3 0+14 1 MgO 0+ 14 7 CaO 5.5+14 14+12 SrO 0+14 8 BaO +11 6+14 17 ZrO2 +11 +12 0+14 1.5 TiO2 +11 +12 0+14 0. 5 SnO2 0.05+14 1.+10 6. A process according to claim 5, wherein the alkali-free aluminosilicate glass batch (in % by weight based on oxide) comprises: SiO2 +22 58+ 14 62+12 +12 Al2O3 +11 +12 15+14 17.5 B2O3 0.2+14 0.7 MgO +12 +12 0+14 +21 1 CaO 5. 5+14 14+12 SrO 0+14 8 BaO +11 6+14 10 ZrO2 0.05+14 1+12 +10 TiO2 +11 +12 0+14 0.5 SnO2 0. 05+14 1.+10 7. A process according to claim 2, wherein the alkali-free aluminosilicate glass batch (in % by weight based on oxide) comprises: SiO2 46+14 63 Al2O3 12+14 25 MgO 0+ 14 5 CaO +11 3+14 14 SrO +11 0+14 11 BaO +11 6+14 15 with MgO +30 +0 CaO +30 +0 SrO + 30 +0 BaO +23 25 with SrO +30 +0 BaO +24 10 ZrO2 0.1+14 5+11 +12 P2O5 0.1+14 9+11 +12 SnO2 0. 05+ 14 1.+10 8. A process according to claim 1, wherein the alkali-free aluminosilicate batch comprises 0.1%-0.5% by weight of SnO2. 9. A process according to claim 1, wherein no evaporation fining agents are added. 10. A process according to claim 1, wherein no decomposition fining agents are added. 11. A process according to claim 1, wherein the alkali-free aluminosilicate glass batch (in % by weight based on oxide) further comprises: CeO2 +11 +12 0+14 0.6 MoO3 0+14 2 WO3 0+14 2 V2O5 +11 +12 0+14 0. 2 MnO2 +11 +12 0+14 0.2 Fe2O3 +11 +12 0+14 0. 5 where CeO2 +30 +0 MoO 3 +30 +0 WO3 +30 + 0 V2O5 +30 +0 MnO2 +30 +0 Fe2O 3 + 12 0+14 3. 12. A process according to claim 1, wherein the alkali-free aluminosilicate glass batch is free from As 2 O3, Sb 2O3, CdO, PbO, Bi2O 3, except for unavoidable impurities. 13. Alkali-free aluminosilicate glass having a composition as follows (in % by weight based on oxide) SiO2 46+14 64 Al2 O3 12+14 26 B2O3 +12 +12 0+14 +21 5 MgO 0+14 7 CaO +11 3+14 14 SrO +11 0+14 11 BaO +11 6+14 25 ZrO2 0+14 5 TiO2 +11 +12 0+14 0.6 P2O5 0+14 9 SnO2 0.05+ 14 1.+10 14. Alkali-free aluminosilicate glass according to claim 13, having a composition as follows (in % by weight based on oxide): SiO2 +22 55+14 64+12 +12 Al2O3 13+14 18 B2O3 +12 +12 0+14 + 21 5 MgO 0+14 7 CaO +11 5+14 14 SrO 0+14 8 BaO +11 6+14 17 ZrO2 0+14 2 TiO2 +12 +11 0+14 0.5 SnO2 0.05+14 1.+10 15. Alkali-free aluminosilicate glass according to claim 14, having a composition as follows (in % by weight based on oxide): SiO2 59+14 62 Al2 O3 13.5+14 15.5 B2O3 +12 +12 3+14 + 21 5 MgO 2.5+14 5+12 +11 CaO +11 8.2+14 10.5 BaO 8.5+14 9. 5 ZrO2 +11 +12 0+14 1. 5 TiO2 +11 + 12 0+14 0.5 SnO2 0.05+14 1.+10 16. Alkali-free aluminosilicate glass according to claim 14, having a composition as follows (in % by weight based on oxide): SiO2 +22 58+14 62+12 +12 Al2O3 +11 +12 14+14 17.5 B2O3 0+14 1 MgO 0+ 14 7 CaO 5.5+14 14+12 SrO 0+14 8 BaO +11 6+14 17 ZrO2 +11 +12 0+14 1.5 TiO2 +12 +11 0+14 0. 5 SnO2 0.05+ 14 1.+10 17. Alkali-free aluminosilicate glass according to claim 16, having a composition as follows (in % by weight based on oxide): SiO2 +22 58+14 62+12 +12 Al2O3 +11 +12 15+14 17.5 B2O3 0.2+14 0. 7 MgO +12 +12 0+14 + 21 1 CaO 5. 5+14 14+12 SrO 0+14 8 BaO +11 6+14 10 ZrO2 0.05+14 1+10 +12 TiO2 +12 + 11 0+14 0.5 SnO2 0. 05+14 1.+10 18. Alkali-free aluminosilicate glass according to claim 13, having a composition as follows (in % by weight based on oxide): SiO2 46+14 63 Al2 O3 12+14 25 MgO 0+14 5 CaO +11 3+14 14 SrO +11 0+14 11 BaO +11 6+14 15 where MgO +30 +0 CaO +30 +0 SrO +30 +0 BaO +23 25 where SrO +30 +0 +0 BaO +24 10 ZrO2 0.1+ 14 5+11 +12 P2O5 0.1+14 9+11 +12 SnO2 0.05+14 1.+10 19. Alkali-free aluminosilicate glass according to claim 13, further comprising CeO2 +11 +12 0+14 0. 6 MoO3 0+14 2 WO3 0+14 2 V2O5 +11 +12 0+14 0. 2 MnO2 +11 +12 0+14 0. 2 Fe2O3 +11 + 12 0+14 0. 5 where CeO2+0 +30 +0 MoO3+0 +30 +0 WO3+0 +30 +0 V2O5+0 +30 +0 MnO2+0 +30 +0 Fe2 O3 +12 0+ 14 3. 20. Alkali-free aluminosilicate glass according to claim 13, which, except for unavoidable impurities, is free from As2O 3, Sb2O3, CdO, PbO, Bi2O3. 21. A process for producing an alkali-fre aluminosilicate glass, comprising melting a composition comprising (in % by weight based on oxide): B2O3 +21 5; BaO +22 5.5; and SnO2 0.05+14 1.0 and glass components constituting the aluminosilicate glass. 22. A process according to claim 21, further comprising batch charging the composition wherein the SnO 2 is added during batch charging. 23. A process according to claim 21, wherein the SnO2 is added during melting. 24. A process according to claim 22, further comprising hot forming a glass made after melting. 25. A process according to claim 21, wherein the composition comprises 0.1%-0.5%, by weight based on oxide of SnO2.
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이 특허에 인용된 특허 (6)
Nagashima, Yukihito; Toshikiyo, Yoshikazu, Alkali free glass, production method therefor, and flat display panel using the same.
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