Glass

FIELD: chemistry.

SUBSTANCE: invention relates to technology of silicates and relates to glass compounds, that can be used for making articles for decorative and art purposes,sorted crockery. Glass contains in %wt: SiO2 58.5–64.5; Al2O3 13.0–15.0; MgO 3.0–4.0; K2O 6.5–7.5; MoO3 6.5–7.5; CeO2 6.5–7.5.

EFFECT: increase in chemical stability.

1 cl, 1 tbl

 



 

Same patents:
Glass // 2304097

FIELD: glass industry, technology of silicates.

SUBSTANCE: invention relates to glass compositions used in making articles for chemical, pharmaceutical industry and articles for economy-domestic designation. Proposed glass comprises the following components, wt.-%: SiO2, 55.0-60.0; Al2O3, 12.0-17.0; ZrO2, 4.0-6.0; CaO, 8.0-10.0; ZnO, 4.0-8.0; TiO2, 4.0-6.0, and B2O3, 2.0-4.0. Invention provides enhancing alkali stability of glass.

EFFECT: improved and valuable property of glass.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates the technology of silicates and production of glass which can be used in making glass facing tiles. The mixture for making glass contains the following components in wt %: soda 5.0-10.0; quartz sand 65.0-75.0; foamed vermiculite 20.0-25.0.

EFFECT: high water resistance of the glass.

1 tbl

Glass // 2424989

FIELD: chemistry.

SUBSTANCE: invention relates to glass compositions which can be used in making dishware and packaging. The glass contains the following in wt %: SiO2 80.5-82.0; Al2O3 0.5-1.0; MgO 15.5-16.5; SrO 0.4-0.8; Na2O 1.0-1.5; FeO 0.05-0.1; Fe2O3 0.05-0.1.

EFFECT: increased glass thermal stability.

1 tbl

FIELD: construction.

SUBSTANCE: heat-resistant yellow light glass contains the following components, wt %: SiO2 - 48.0-53.0; Al2O3 - 23.0-27.0; Li2O - 3.0-4.5; Na2O - 1.5-3.5; P2O5 - 2.0-3.5; TiO2 - 6.5-8.0; BaO - 2.5-3.5; CeO2 - 1.5-2.5; Sb2O3 - 0.5-1.0.

EFFECT: stabilisation of light parametres, reduced temperature of boiling, yield and annealing.

1 cl, 2 tbl

Electrovacuum glass // 2167111
The invention relates to compositions of lead-free electrovacuum glass and can be used in the production of electrically insulating glass for parts and components vacuum devices

The invention relates to compositions recrystallizes glasses designed for dielectric isolation of active elements silicon integrated circuits and create a silicon-on-insulator (SOI) and silicon structures with dielectric isolation (XDI)

FIELD: chemistry.

SUBSTANCE: present invention relates to medicine, particularly 5-100 mcm microbeads for radiotherapy, which are made from aluminosilicate glass having high content of Y2O3. The microbeads made from yttrium-aluminosilicate glass for radiotherapy with diameter from 5 to 100 mcm contain Y2O3, Al2O3 and SiO2, with the following ratio of components, mol %: Y2O3 - 17-22; Al2O3 - 19-25; SiO2 - 53-64.

EFFECT: obtaining articles which do not contain glass crystallisation products and foreign inclusions.

2 cl, 11 ex, 8 dwg

Glass // 2334696

FIELD: chemistry.

SUBSTANCE: glass contains SiO2, Al2O3, B2O3, SrO and SnO2 at the following component ratio, mass %: SiO2 - 50.0-55.0; Al2O3 - 10.0-15.0; B2O3-5.0-10.0; SrO - 15.0-25.0; SnO2 - 5.0-10.0.

EFFECT: glass softening temperature rise.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention pertains to compounds of heat-absorbing glass, used in construction. The glass consists of the following components with the given percentage mass ratios: SiO2 50.0-55.0; Al2O3 1.5-3.0; CaO 6.0-7.2; MgO 5.5-6.3, Na2O 13.0-17.0; Fe2O3 0.4-0.75; C 0.05-0.1; Li2O 0.5-1.0; B2O3 15.5-17.2.

EFFECT: lower melting temperature of the glass.

1 tbl

Glass // 2323173

FIELD: composition of glass; manufacture of floor tiles, pipes, ejector bodies for aeration systems and abrasive material pneumatic transport.

SUBSTANCE: proposed glass contains the following components, mass-%: SiO2, 50.0-58.0; Al2O3, 15.0-20.0; CaO, 5.0-7.0; MgO, 5.0-7.0; Fe2O3, 1.0-2.0; MnO, 5.0-7.0;S-2, 0.1-0.2; Na2O and/or K2O, 1.9-3.8; B2O3, 5.0-7.0.

EFFECT: enhanced resistance of glass to attrition.

1 tbl

The invention relates to compositions of glasses used to obtain the foam, which can be used in the construction industry as an effective thermal insulation material
Glass // 2323173

FIELD: composition of glass; manufacture of floor tiles, pipes, ejector bodies for aeration systems and abrasive material pneumatic transport.

SUBSTANCE: proposed glass contains the following components, mass-%: SiO2, 50.0-58.0; Al2O3, 15.0-20.0; CaO, 5.0-7.0; MgO, 5.0-7.0; Fe2O3, 1.0-2.0; MnO, 5.0-7.0;S-2, 0.1-0.2; Na2O and/or K2O, 1.9-3.8; B2O3, 5.0-7.0.

EFFECT: enhanced resistance of glass to attrition.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention pertains to compounds of heat-absorbing glass, used in construction. The glass consists of the following components with the given percentage mass ratios: SiO2 50.0-55.0; Al2O3 1.5-3.0; CaO 6.0-7.2; MgO 5.5-6.3, Na2O 13.0-17.0; Fe2O3 0.4-0.75; C 0.05-0.1; Li2O 0.5-1.0; B2O3 15.5-17.2.

EFFECT: lower melting temperature of the glass.

1 tbl

Glass // 2334696

FIELD: chemistry.

SUBSTANCE: glass contains SiO2, Al2O3, B2O3, SrO and SnO2 at the following component ratio, mass %: SiO2 - 50.0-55.0; Al2O3 - 10.0-15.0; B2O3-5.0-10.0; SrO - 15.0-25.0; SnO2 - 5.0-10.0.

EFFECT: glass softening temperature rise.

1 tbl

FIELD: chemistry.

SUBSTANCE: present invention relates to medicine, particularly 5-100 mcm microbeads for radiotherapy, which are made from aluminosilicate glass having high content of Y2O3. The microbeads made from yttrium-aluminosilicate glass for radiotherapy with diameter from 5 to 100 mcm contain Y2O3, Al2O3 and SiO2, with the following ratio of components, mol %: Y2O3 - 17-22; Al2O3 - 19-25; SiO2 - 53-64.

EFFECT: obtaining articles which do not contain glass crystallisation products and foreign inclusions.

2 cl, 11 ex, 8 dwg

FIELD: technological processes.

SUBSTANCE: invention relates to lithium-containing glass with high content of oxidised iron. Glass contains the following components, wt%: SiO2 60-63; Na2O 10-12; Li2O 4-5.5; Al2O3 17-19; ZrO2 3.5-5; Al2O3+ZrO2 21.5-24; FeO 0.0005-0.015; Fe2O3 (total iron) 50-1200 ppm and an oxidising agent selected from a group comprising cerium oxide in the amount of more than 0-0.50 wt%, manganese oxide in the amount of more than 0-0.75 wt%, and mixtures thereof. Method for replacement the process of lithium glass manufacturing with high absorption in the infrared area with FeO content in an the amount of 0.02-0.04 wt% and redox ratio in the range of 0.2-0.4 by the process of producing lithium glass with low absorption in the infrared area by adding additional oxidants - CeO2 and MnO2 to materials of charge stock. Second method consists in replacement of the process of producing of lithium glass with low absorption in the infrared area by the process of producing lithium glass with high absorption in the infrared area by addition of additional conditioners to materials of charge stock.

EFFECT: technical result of the invention consists in reduction of time of transition from the production cycle of producing glass with high absorption in the infrared area to the production cycle of producing glass with low absorption in infrared area or vice versa.

23 cl, 7 dwg, 3 tbl

FIELD: ceramic industry.

SUBSTANCE: invention relates to lithium silicate glass ceramic and glass, which are crystallized at low temperatures and are especially suitable as dental materials, in particular, for dental restoration. Lithium silicate glass ceramics contains hexavalent metal oxide, selected from MoO3, WO3 and mixtures thereof, in amount of 0.1–8.4 wt%, from 12.0 to 20.0 wt% of Li2O and wherein including from 0 to less than 0.5 wt% of K2O. For production of glass ceramics with lithium disilicate as main crystalline phase initial glass with germs is subjected to thermal treatment at temperature of 520–750 °C.

EFFECT: technical result of invention is production of glass ceramic with improved mechanical and optical properties.

22 cl, 1 tbl, 9 ex

Glass // 2614773

FIELD: chemistry.

SUBSTANCE: glass comprises the following in wt %: SiO2 49.5-64.5; Al2O3 10.5-20.0; Fe2O3 0.5-5.0; CaO 5.0-9.0; MgO 9.0-11.2; SO3 0.2-0.4; CaF2 2.0-4.0; B2O3 4.0-5.3.

EFFECT: increased strength of glass.

1 tbl

Glass // 2631708

FIELD: chemistry.

SUBSTANCE: glass comprises, wt %: SiO2 67.0-68.0; CaO 14.0-15.5; FeO 1.0-1.5; Na2O 4.0-5.0; B2O3 9.3-10.0; SeO2 1.0-2.0; AgO2 0.5-1.0.

EFFECT: increasing the chemical resistance.

1 tbl

FIELD: chemistry.

SUBSTANCE: method for manufacturing a lithium silicate glass-ceramic comprising: a tetravalent metal oxide selected ZrO2, TiO2, CeO2, GeO2, SnO2 and mixtures thereof, of at least 12.1 wt % Li2O, from 0 to less than 0.1 wt % of La2O3, from 0 to less than 1.0 wt % of K2O and less than 2.0 wt % of Na2O, comprises the steps of: (a) the initial glass comprising the components of the glass-ceramic is subjected to a thermal treatment at a temperature of 480-520°C for 10-30 min to form a glass with embryos that are suitable for the formation of lithium disilicate crystals, and (b) glass with embryos is subjected to heat treatment at a temperature of 640-740°C for the formation of glass ceramics with lithium disilicate as the main crystalline phase, the duration of the second heat treatment in step (b) is 10-60 minutes. Lithium silicate glass ceramics obtained by the aforementioned method and using it as a material for tooth restoration, in particular for coating materials for restoration of teeth or for the manufacture of materials for restoration of teeth, is also proposed.

EFFECT: preparation of glass ceramics containing lithium disilicate as the main crystalline phase, with short thermal treatments and at sufficiently low temperatures of the crystallization process, the formation of the resulting glass ceramics into the desired material for tooth restoration can be carried out by pressing or machining.

21 cl, 1 tbl, 16 ex

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