WO2001064595A1 - Verre de couleur pale a haute transmittance et son procede de production - Google Patents
Verre de couleur pale a haute transmittance et son procede de production Download PDFInfo
- Publication number
- WO2001064595A1 WO2001064595A1 PCT/JP2001/001609 JP0101609W WO0164595A1 WO 2001064595 A1 WO2001064595 A1 WO 2001064595A1 JP 0101609 W JP0101609 W JP 0101609W WO 0164595 A1 WO0164595 A1 WO 0164595A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- colored
- light
- glass
- highly transparent
- transparent glass
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
- C03C4/02—Compositions for glass with special properties for coloured glass
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
- C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
Definitions
- the present invention uses a light-colored highly transparent glass to produce a glass having a light blue, neutral gray or bronze color tone and a high transmittance suitable for architectural glass or interior glass, and low-cost glass. On how to do it.
- white sheet glass which has almost no color, has been favored as glass for exteriors and interiors of buildings.
- Light blue, gray or bronze tinted glass may be preferred to match the surrounding interior and exterior colours.
- JP-A-4 it disclosed in JP-A-4 one 2 2 8 4 5 0 JP edge colored transparent glass, as a colorant, expressed as F e 2 0 3 less than zero. 0 2% in% by weight Soda-lime glass containing total iron oxide and having a ratio of iron oxide in the ferrous state (F e 0) to total iron oxide of at least 0.4; It is a glass with low coloration and high transmittance, showing a light transmittance (light C) of at least 87% at a thickness of mm.
- the glass has a low so 3 content and a melting process that includes separate liquefaction and fining steps to achieve the properties shown above. It has the above characteristics and the characteristics of raw materials that use ⁇ -batch materials that do not contain limestone and dolomite to reduce the iron content in glass. Further, in the colored transparent glass disclosed in Japanese Patent Application Laid-Open No. Hei 4-284551, a glass containing the same level of iron oxide has an edge color that matches the woody tone. Minor amounts of Se and CoO are added so that the glass exhibits a main transmission wavelength of 0 nm.
- the total amount of iron oxide in terms of ferric oxide is 0.02 to 0.2. in weight% of Soviet one da-lime-silica based glass, its matrix composition in% by weight of 6 9-7 5% 1_Rei 2 from 0 3% a 1 2 O 3> 0 ⁇ 5 % of B 2 ⁇ 3, 2-1 0% C aO-, less than 2% MgO, 9 ⁇ : 1 7 % of the N a 2 0, 0 to 8% of the K 2 0, optionally fluorine, zinc oxide, acid zirconium , And less than 4% by weight of barium oxide, and the total amount of alkaline earth metal oxides is 10% by weight or less, so that the absorption band of F e O is shifted to the longer wavelength side.
- the total iron oxide In addition, in the edge-colored transparent glass disclosed in Japanese Patent Application Laid-Open No. Hei 4-284545, in order to obtain a desired pure and bright blue sky (azm'e) edge color, the total iron oxide The ratio of iron oxide in the ferrous state (F e ⁇ ) must be at least 0.4.
- the content of Fe ion which is more liable to bond with sulfide ions than Ni ions, is suppressed to achieve a pale color tone. If Ni ions are contained as impurities, they tend to combine with sulfide ions to form NiS which causes natural damage.
- the composition disclosed in this publication supplemented by the amount of M g O and M G_ ⁇ + C a O is small, also the inconvenience on melting and generous the N a 2 ⁇ amount than usual due to it Therefore, the glass has a composition that is not preferable for mass production, such as high devitrification temperature and high cost.
- the effect disclosed in the publication can be enhanced by adding components such as F and BaO, but the addition of these components increases costs. It is not preferable because the volatilization of F shortens the kiln life and releases harmful substances into the atmosphere.
- the present invention has been made in view of the above-mentioned problems of the related art, and has a light blue, neutral gray or bronze color tone suitable for light-colored and highly transparent glass, particularly, architectural glass or interior glass.
- the aim is to provide a glass having a high transmittance and a method for producing the glass at low cost.
- a glass plate containing silica as a main component is expressed as a coloring component by weight%.
- the light-colored high-transmission glass having a light blue color tone of the present invention desirably contains less than 2 ppm of Co 2 O in terms of% by weight, and T—Fe of not less than 0.02%. it is further desirable to contain 2 0 3.
- the main wavelength of the light-colored high-transmission glass having a light blue color tone of the present invention is desirably 480 to 490 nm.
- a glass component containing silica as a main component is expressed as a coloring component by weight%. 0.02 to 0.06% (but not including 0.06%) of T—F e 2 ⁇ 3 , 0.25 to 3 ppm of S e,
- the light-colored high-transmission glass having a light neutral gray or bronze color tone of the present invention is expressed in terms of% by weight, and is 0.5 to 2 £ 111 of 36, 0.5 to 1 ppm. It is desirable to contain C ⁇ ⁇ .
- the dominant wavelength of the light-colored high-transmission glass having a light neutral gray or bronze color tone of the present invention is desirably 565 to 580 nm.
- the light-colored high-transmission glass having a light neutral gray color tone of the present invention at a thickness of 10 mm, using the L * a * b * color system measured using a C light source, a The chromaticity represented by *, b * is one 1 ⁇ a 0 '.
- the content of cerium oxide is desirably less than 0.1% in terms of% by weight.
- the light-colored and highly transparent glass having the above-mentioned desirable colorant component and color tone is expressed as a base glass component by weight%
- the Ni ions contained as a small amount of impurities in the glass raw material are sulfur ions. It has a tendency to form NiS, which causes natural spontaneous damage, by being combined with the ion.
- This tendency does not cause the composition to color the glass such as Y, La, Zr, Hf, Nb, Ta, W, Zn, Ga, 'Ge and Sn.
- it can be suppressed by containing a single or a plurality of oxides of heavy elements that do not cause a change that adversely affects the glass even when exposed to a reducing atmosphere in a float bath.
- the content of these heavy element oxides is preferably 0.01 to 1%, more preferably 0.01 to 0.1%, expressed as% by weight. It is desirable that the content be in the range of 0.01 to 0.05%.
- the oxides of these heavy elements are desirably Zn0.
- dolomite or limestone as a raw material, as in the case of ordinary soda-lime glass, in order to reduce the cost increase of the glass as much as possible. This is made possible by controlling the iron oxide content within the above-described desirable range.
- the batch material is used in a normal soda-lime glass melting furnace, and the liquefaction stage and the fining stage are one kiln It is desirable to melt in an upper heating tongue type melting furnace performed inside.
- compositions of the light-colored and highly colored transmission glass of the present invention will be described. However, the following compositions are expressed in weight%.
- Iron oxide is present in glass in the form of F e 2 0 3 or F E_ ⁇ .
- F e 2 0 3 is a component to give a very pale yellow color to the glass
- F E_ ⁇ is a component that gives blue shades on the glass.
- T one F e 2 0 3 is 0.0 less than 6%, F e 0 ratio is required to be in the range of less than 4 0%.
- T In one F e 2 ⁇ 3 upper limit amount or more the green wearing color darker caused by iron oxide, it is difficult to obtain a desired color tone.
- T- wishing desirable maximum value of F e 2 ⁇ 3 is 0.0 to 4% of high transmittance inconspicuous green remainder is obtained.
- the FeO ratio is higher than the upper limit, melting in a normal soda-lime glass melting furnace becomes difficult. .
- T-F e 2 ⁇ 3 0.0 less than 2%, it is necessary to use a high purity material not less iron as a raw material, the cost is increased significantly, T one F e 2 0 3
- the amount is desirably 0.02% or more.
- CoO is an essential component for obtaining a blue color tone.
- the amount is less than 0.5 ppm, the green color tone of the iron oxide is not so noticeable, and when it is more than 5 ppm, the blue color is too strong. More preferred-the range is less than 2 ppm.
- Se is essential;-CO is an optional ingredient added as needed.
- Neutral gray or black The balance between the green color of the iron oxide, the reddish-brown color of the Se and the blue color of the C 0 ⁇ is very important for obtaining a lons tone. When ⁇ 6 is less than 0.25 ppm, the color tone is slightly greenish, which is not preferable.
- Desirable ranges of S e and C oO for obtaining a neutral gray or bronze color while maintaining high transmittance are 0.5 to 2 ppm and 0.5 to 1 ppm, respectively.
- Oxidation Seriumu is not essential, and F e 2 0 3 is oxidized to F e 0, take effect ingredients der to reduce the green caused by iron oxide and UV transmittance of the glass It also has another favorable effect of reducing odor. The higher the amount, the higher the effect. However, if it exceeds 0.45% of the upper limit, the yellow color itself becomes strong and it becomes difficult to obtain a desired color tone. Also, since the cost of the glass increases because the raw materials are expensive, it is desirable that the addition amount be less than 0.1%.
- S i 0 2 is a main component forming the skeleton of glass.
- S i 0 2 6 5% non Mitsurude decreases the durability of the glass, glass melting becomes difficult exceeds 80%.
- a 1 2 0 3 is a component for improving the durability of the glass, glass melting becomes difficult if it exceeds 5%. Preferably, it is in the range of 0.1 to 2.5%.
- Mg ⁇ and CaO are used to improve the durability of glass and to adjust the devitrification temperature and viscosity during molding.
- the MgO content is 2% or less, the devitrification temperature increases. If C a ⁇ is less than 5% or exceeds 15%, the devitrification temperature rises. If the total content of Mg ⁇ and CaO is less than 5%, the durability of the glass decreases, and if it exceeds 15%, the devitrification temperature increases.
- the sum of MgO and C a ⁇ is small, For example, in the case of 1.0% or less, there the N a 2 0 needs to be generous to increase the complement Utame viscosity solubility of deterioration or glass melt, lowering of-chemical durability increase and glass Kos Bok Therefore, it is desirable that the sum of Mg 0 and C a O is more than 10%.
- N a 2 0 and K 2 ⁇ are used as glass melting accelerator.
- N a 2 ⁇ is poor dissolution promotion effect total of 1 0% less than or N a 2 human K 2 ⁇ is less than 1 0%, or N a 2 0 exceeds 1 8%, or N a 2 0 and ⁇ the 2 0 total exceeds 2 0% durability of the glass is lowered.
- Kappa 2 ⁇ because the raw material is expensive compared to N a 2 0, it is not preferable exceeds 5%.
- S_ ⁇ 3 is a component which promotes refining of the glass. If it is less than 0.05%, the refining effect becomes insufficient in a usual melting method, and the preferable range is 0.1% or more. On the other hand, if it exceeds 0.25%, S ⁇ generated by its decomposition will remain as bubbles in the glass, or bubbles will be easily generated by reboil. ,
- T i 0 2 is not an essential component, but in the range not adversely that impair the optical properties of the present invention is intended, it is the this added appropriate amount for purposes such as to enhance the ultraviolet absorbing power. If the amount is too large, the glass tends to take on a yellow tint. Therefore, it is desirable to keep the content low within a range of less than 0.2%.
- the effect of the present invention is not impaired even if fluorine, barium oxide, and strontium oxide are contained, and these components have unfavorable effects such as increased costs, kiln life, and emission of harmful substances to the atmosphere. Therefore, it is desirable not to substantially contain the compound.
- the component added as an oxidizing agent to the glass having the above composition range is preferably cerium oxide within the above-defined range because of its effect and another preferable effect of ultraviolet absorption. % Or less, in combination with cell oxide or alone. No.
- Oxides of the heavy elements Y, La, Zr, Hf, Nb, Ta, W, Zn, Ga, Ge and Sn are particularly useful when the glass is used without tempering. Components that do not need to be added, but when used as air-cooled tempered glass, it is desirable to add 0.01 to 1% alone or in multiples to prevent natural damage due to NiS. It is. If the amount is less than the lower limit, the effect of preventing the generation of NiS is weakened. The preferred addition amount is 0.01 to 0.1%, and the most preferred addition amount is 0.01 to 0.05%. Further, the oxides of the heavy elements described here all have the same effect as the effect of preventing the generation of NiS, but ZnO is the most preferable in terms of its effect and cost. Further, as a raw material of these heavy element oxides, any other forms such as sulfates and nitrates which can be converted into oxides in the glass melting process, such as sulfates and nitrates, can be used.
- Raw materials that have the composition shown in Table 1 when converted to oxides and expressed as weight percent are shown in Table 1 below: low iron sand, limestone, dolomite, soda ash, boa glass, cerium oxide, COO, metallic selenium, and carbon-based
- the mixture was prepared using a reducing agent, and this raw material was heated to 1450 T in an electric furnace and melted. After melting for 4 hours, The lath base was poured out and gradually cooled to room temperature to obtain a glass having a thickness of about 15 mm. Concentrations in the table are weight% except for CoO and Se, and -Co ⁇ and Se are expressed in ppm.
- this glass is polished to a thickness of 10 mm, and the optical characteristics are determined using a CIE standard C light source, visible light transmittance, dominant wavelength, excitation purity, and L * a * b * color system.
- the chromaticity represented by a * and b *, the solar transmittance, and the ultraviolet transmittance defined by ISO 9050 were measured. Table 1 shows the optical property values of the obtained samples. '
- Example 1 is a glass having a clear pale blue color, as can be seen from the fact that the dominant wavelength is in the range of 480 to 490 nm.
- Example 4 is a glass having a nearly neutral gray as can be seen from the chromaticities a * and b *.
- Example 5 is a glass having a light bronze color tone as can be seen from the dominant wavelength and chromaticity a *, b *.
- Table 2 shows the composition and optical characteristics of the comparative example for the present invention. Composition is% by weight.
- Comparative Examples 1 and 2 show the basic composition of the present invention and the total iron oxide and FeO Comparative Example 3 is a typical soda-lime glass composition having a ratio and not containing Se and CoO.
- each of the compositions has a dominant wavelength in the range of 498 to 538 nm
- the bluish green to yellowish tint is different from the blue or neutral gray or bronze colors aimed at by the present invention.
- Comparative Examples 1 and 2 are pale in color and relatively high in transmittance, but a greenish yellowish color is not preferred in some cases.
- the typical soda-lime glass of Comparative Example 3 has a very dark green color, as can be seen from the L * a * b * color system a * value of 1.2.31, and has a pale color. Not suitable for applications that require color.
- the raw materials of the base composition are prepared in the same manner as in Examples 1 to 5 so that the composition shown in Table 3 is expressed in terms of wt% in terms of oxide, and an oxide of a heavy element is added thereto (Z n only with zinc nitrate hexahydrate) to obtain a blended raw material, and 0.028 g of Ni particles with an average particle size of 149 m for the raw material equivalent to 200 g in the molten state
- a crucible made of alumina with a capacity of 250 cm 3 pre-heated this crucible at 600 for 30 minutes, and then put it in an electric furnace maintained at 1370 ° C. The temperature was raised to 1400 in 0 minutes. Further, the back pot held at this temperature for 2.2 hours was taken out of the furnace, cast, and gradually cooled from 65 ° C. to room temperature, to obtain Examples 6 to 10.
- a glass having a pale blue or neutral gray color, a bronze color tone, a high transmittance, and a low possibility of containing NiS, which is a cause of spontaneous breakage is used. It can be obtained at cost.
- the light-colored and highly transparent glass of the present invention is not particularly limited, but is particularly useful as architectural glass.
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Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01908238A EP1201615B1 (en) | 2000-03-02 | 2001-03-02 | Palely colored glass having high transmittance and method for producing the same |
DE60120076T DE60120076T2 (de) | 2000-03-02 | 2001-03-02 | Schwach gefärbtes glas mit hoher durchlässigkeit |
US09/980,457 US6548434B2 (en) | 2000-03-02 | 2001-03-02 | Palely colored glass having high transmittance and method for producing the same |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-057104 | 2000-03-02 | ||
JP2000057104 | 2000-03-02 | ||
JP2000401952A JP2001316128A (ja) | 2000-03-02 | 2000-12-28 | 淡色着色高透過ガラスおよびその製造方法 |
JP2000-401952 | 2000-12-28 |
Publications (1)
Publication Number | Publication Date |
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WO2001064595A1 true WO2001064595A1 (fr) | 2001-09-07 |
Family
ID=26586606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/001609 WO2001064595A1 (fr) | 2000-03-02 | 2001-03-02 | Verre de couleur pale a haute transmittance et son procede de production |
Country Status (7)
Country | Link |
---|---|
US (1) | US6548434B2 (ja) |
EP (1) | EP1201615B1 (ja) |
JP (1) | JP2001316128A (ja) |
CN (2) | CN1272269C (ja) |
DE (1) | DE60120076T2 (ja) |
MY (1) | MY122846A (ja) |
WO (1) | WO2001064595A1 (ja) |
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US6831030B2 (en) * | 2001-09-05 | 2004-12-14 | Nippon Sheet Glass Company, Ltd. | High transmittance glass sheet and method of manufacturing the same |
US6962887B2 (en) * | 2003-05-14 | 2005-11-08 | Ppg Industries Ohio, Inc. | Transparent glass having blue edge color |
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US7627531B2 (en) * | 2000-03-07 | 2009-12-01 | American Express Travel Related Services Company, Inc. | System for facilitating a transaction |
US6521558B2 (en) | 2001-01-23 | 2003-02-18 | Guardian Industries Corp. | Grey glass composition including erbium |
US6573207B2 (en) | 2001-01-23 | 2003-06-03 | Guardian Industries Corp. | Grey glass composition including erbium |
US6672108B2 (en) | 2001-04-26 | 2004-01-06 | Guardian Industries Corp. | Method of making glass with reduced Se burnoff |
US6498118B1 (en) | 2001-06-27 | 2002-12-24 | Guardian Industries Corp. | Grey glass composition including erbium and holmium |
US6716780B2 (en) | 2001-09-26 | 2004-04-06 | Guardian Industries Corp. | Grey glass composition including erbium, holmium, and/or yttrium |
US7037869B2 (en) | 2002-01-28 | 2006-05-02 | Guardian Industries Corp. | Clear glass composition |
US7169722B2 (en) * | 2002-01-28 | 2007-01-30 | Guardian Industries Corp. | Clear glass composition with high visible transmittance |
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US7326665B2 (en) * | 2002-09-04 | 2008-02-05 | Asahi Glass Company, Limited | Light blue flat glass |
FR2844364B1 (fr) * | 2002-09-11 | 2004-12-17 | Saint Gobain | Substrat diffusant |
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US7825051B2 (en) * | 2006-01-12 | 2010-11-02 | Ppg Industries Ohio, Inc. | Colored glass compositions |
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2000
- 2000-12-28 JP JP2000401952A patent/JP2001316128A/ja not_active Withdrawn
-
2001
- 2001-03-02 DE DE60120076T patent/DE60120076T2/de not_active Expired - Fee Related
- 2001-03-02 CN CNB2004100789875A patent/CN1272269C/zh not_active Expired - Fee Related
- 2001-03-02 CN CNB01800413XA patent/CN1208273C/zh not_active Expired - Fee Related
- 2001-03-02 MY MYPI20010982A patent/MY122846A/en unknown
- 2001-03-02 EP EP01908238A patent/EP1201615B1/en not_active Expired - Lifetime
- 2001-03-02 WO PCT/JP2001/001609 patent/WO2001064595A1/ja active IP Right Grant
- 2001-03-02 US US09/980,457 patent/US6548434B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5030593A (en) * | 1990-06-29 | 1991-07-09 | Ppg Industries, Inc. | Lightly tinted glass compatible with wood tones |
US5656559A (en) * | 1994-06-23 | 1997-08-12 | Saint-Gobain Vitrage | Clear glass composition intended for the production of panes |
JPH1045424A (ja) * | 1996-07-31 | 1998-02-17 | Central Glass Co Ltd | 紫外線吸収着色ガラス |
JP2000143283A (ja) * | 1998-10-30 | 2000-05-23 | Flachglas Ag | ソ―ダ石灰珪酸塩ガラス |
Non-Patent Citations (1)
Title |
---|
See also references of EP1201615A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6831030B2 (en) * | 2001-09-05 | 2004-12-14 | Nippon Sheet Glass Company, Ltd. | High transmittance glass sheet and method of manufacturing the same |
US6903037B2 (en) | 2001-09-05 | 2005-06-07 | Nippon Sheet Glass Company, Limited | High transmittance glass sheet and method of manufacturing the same |
US7071134B2 (en) | 2001-09-05 | 2006-07-04 | Nippon Sheet Glass Company, Limited | High transmittance glass sheet and method of manufacturing the same |
US6962887B2 (en) * | 2003-05-14 | 2005-11-08 | Ppg Industries Ohio, Inc. | Transparent glass having blue edge color |
Also Published As
Publication number | Publication date |
---|---|
CN1364148A (zh) | 2002-08-14 |
MY122846A (en) | 2006-05-31 |
CN1618757A (zh) | 2005-05-25 |
US20020169064A1 (en) | 2002-11-14 |
EP1201615A4 (en) | 2004-06-23 |
EP1201615B1 (en) | 2006-05-31 |
CN1208273C (zh) | 2005-06-29 |
US6548434B2 (en) | 2003-04-15 |
CN1272269C (zh) | 2006-08-30 |
JP2001316128A (ja) | 2001-11-13 |
DE60120076T2 (de) | 2006-11-02 |
EP1201615A1 (en) | 2002-05-02 |
DE60120076D1 (de) | 2006-07-06 |
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