EP1704124A2 - High temperature glass fiber insulation - Google Patents
High temperature glass fiber insulationInfo
- Publication number
- EP1704124A2 EP1704124A2 EP04809759A EP04809759A EP1704124A2 EP 1704124 A2 EP1704124 A2 EP 1704124A2 EP 04809759 A EP04809759 A EP 04809759A EP 04809759 A EP04809759 A EP 04809759A EP 1704124 A2 EP1704124 A2 EP 1704124A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- amount
- weight percent
- cao
- mgo
- feo
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000003365 glass fiber Substances 0.000 title claims abstract description 43
- 238000009413 insulation Methods 0.000 title description 16
- 239000000203 mixture Substances 0.000 claims abstract description 86
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000011521 glass Substances 0.000 claims abstract description 51
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 26
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000835 fiber Substances 0.000 claims description 31
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 23
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims 3
- 239000000292 calcium oxide Substances 0.000 abstract description 15
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract description 15
- 239000000395 magnesium oxide Substances 0.000 abstract description 15
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract description 15
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 abstract description 5
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 abstract description 4
- 239000000377 silicon dioxide Substances 0.000 abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 3
- 239000004408 titanium dioxide Substances 0.000 abstract description 3
- 229910052810 boron oxide Inorganic materials 0.000 abstract description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 abstract description 2
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001947 lithium oxide Inorganic materials 0.000 abstract description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 abstract description 2
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001950 potassium oxide Inorganic materials 0.000 abstract description 2
- 229910001948 sodium oxide Inorganic materials 0.000 abstract description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- 230000009970 fire resistant effect Effects 0.000 abstract 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 abstract 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 abstract 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 abstract 1
- 229910001928 zirconium oxide Inorganic materials 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 9
- 238000011160 research Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 229910021538 borax Inorganic materials 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 229910021540 colemanite Inorganic materials 0.000 description 2
- 239000006063 cullet Substances 0.000 description 2
- 239000010459 dolomite Substances 0.000 description 2
- 229910000514 dolomite Inorganic materials 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 2
- 229910052808 lithium carbonate Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000004328 sodium tetraborate Substances 0.000 description 2
- 235000010339 sodium tetraborate Nutrition 0.000 description 2
- MQWCQFCZUNBTCM-UHFFFAOYSA-N 2-tert-butyl-6-(3-tert-butyl-2-hydroxy-5-methylphenyl)sulfanyl-4-methylphenol Chemical compound CC(C)(C)C1=CC(C)=CC(SC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O MQWCQFCZUNBTCM-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- -1 basalt Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004031 devitrification Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000007496 glass forming Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- 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
-
- 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
- C03C13/00—Fibre or filament compositions
Definitions
- the present invention relates to glass compositions and particularly to glass compositions having good fiberizing characteristics, high strength, high durability at high temperatures, and high modulus of elasticity.
- High temperature glass compositions have heretofore been produced, but they are subject to the shortcomings of having a short working temperature range or being too expensive to produce due to the high costs of raw material and/or energy reguirements .
- Fibers for aircraft insulation are of particular importance, particularly for commercial aircraft.
- the Federal Aviation Administration has long dictated aircraft to be made safer.
- Aircraft have been destroyed and people's lives lost by fire, and crashes. Examples are an MD-11 which burned and was destroyed in Canada, and an MD-80 which was destroyed by fire and crashed in Texas, USA, and many others. These crashes were blamed on insulation blankets which caught fire and burned.
- the blankets embodied fibers which were relatively low-temperature fibers and so melted at high temperatures.
- An object of the invention is to provide a glass which has good insulation and acoustical properties, high strength, a high modulus of elasticity and high temperature resistance properties. Another object is to provide a glass which has high strength and which can be drawn into long, strong glass fibers.
- the glass compositions of this invention can be formed into long and/or short, stable glass fibers.
- the present invention relates to glass compositions and particularly to glass compositions having good fiberizing characteristics, high strength, high durability at high temperatures, and high modulus of elasticity.
- the glass specimens were prepared utilizing a specific raw material which included silica, alumina, titania, zirconia and other oxides.
- Glasses of this invention were prepared by melting raw batch material in the following approximate ranges of temperatures: between about 2,600°F to about 2,900°F, utilizing conventional refractory containers.
- Glass compositions according to the invention have a liquidous temperature of approximately 2,400°F, which is suitable for glass forming.
- the glass can be formed into fibers for insulation and acoustical parts using the centrifugal rotary process (vertical and horizontal), or blowing and flame processes. It can also be drawn into continuous and staple fibers.
- the material of the invention differs from other high temperature glasses in that, the fibers of the invention differ from prior art in that the material of the invention has good resistance to devitrification at the forming temperature, and requires lower processing energy than other high temperature fibers .
- the molten glass may also be formed into fibers on a conventional drawing wheel, at speeds up to 12,000 feet per minute at temperatures between 2,400°F to about 2,900°F. Speeds between about 3,000 to about 10,000 feet per minute are preferable in order to provide optimum filament properties. Fibers may be drawn from about 9 microns to about 14 microns in diameter. Diameters of about 9 microns are preferred. Fibers were produced using the centrifugal, blowing and flame processes.
- compositions according to the present invention provide a reduction of cost of approximately 20% when compared to other high temperature fibers, because of the use of less expensive raw materials, and lower energy requirements in processing them into glass fibers.
- less binder is required than in known, 'commercially available compositions due to the improved surface condition and high strength off the fibers. Insulation fiber diameters may range from about
- Fibers according to the present invention, for insulation blankets may have the following components having the following ranges of percentages:
- Glass fibers wherein substitution for deleted respective oxides in certain glass fiber compositions defined in the original application, provide improved properties and excellent results. Glass fibers were utilized wherein certain deletions of respective oxides were detected and/or new oxides were added to enhance glass fiber properties, such as enhanced moisture resistance, acoustical properties, and strength. It was determined that these oxides may be substituted for or used in combination with certain oxides specified in the inventor's parent application. These newly-utilized oxides include lithium oxide (Li stigma0) and boron oxide (B_0_) .
- Oxides Oxide Weight %
- raw materials include boric acid, borax, basalt, cullet, dolime, lithium carbonate, and colemanite.
- boric acid boric acid
- borax borax
- basalt basalt
- cullet dolime
- lithium carbonate and colemanite.
- Set forth below are typical batch blends that were mixed and melted in a refractory furnace, the resultant glasses being successfully fiberized into continuous insulation glass fibers.
Abstract
Improved glass compositions for glass fibers typically useful for fire resistant blankets or containers to provide high burn-through resistance at temperatures in excess of 2,300°F and typically comprising 10.23% to 81.81% silica, 2.0% to 25.91% alumina, 0% to 12.0% sodium oxide, 0% to 6.0% potassium oxide, 3.0% to 15.0%calcium oxide, 1.80% to 10.50% magnesium oxide, 1.0% to 18.0% ferrous+ferric oxide, and 0% to 4.0% titanium dioxide; the improved glass compositions may include 0% to 9% lithium oxide, 0% to 9% boron oxide, 0% to 5.0% zirconium oxide, 0% to 6.0% manganese oxide, and 0% to 4.0% phosphorous oxide.
Description
Description
..HIGH TEMPERATURE GLASS FIBER INSULATION
Related Application
This application is a continuation-in-part of US application Serial No. 10/090,346, filed 04 March 2002 of Albert Lewis.
Technical Field
The present invention relates to glass compositions and particularly to glass compositions having good fiberizing characteristics, high strength, high durability at high temperatures, and high modulus of elasticity.
Background Art
There has been existed a demand for fiber glass compositions which can be successfully formed into fibers, particularly for use in insulation and acoustical products.
Problems of achieving those characteristics at relatively low cost have long been recognized in the glass art, but no satisfactory compositions have been available for forming long and small diameter glass fibers having the desired characteristics.
The problems associated with the achieving of such characteristics and providing an appropriate product at reasonable costs have long been recognized in the glass art.
High temperature glass compositions have heretofore been produced, but they are subject to the shortcomings of having a short working temperature range or being too expensive to produce due to the high costs of raw material and/or energy reguirements .
Fibers for aircraft insulation are of particular importance, particularly for commercial aircraft. The Federal Aviation Administration has long dictated aircraft to be made safer.
Aircraft have been destroyed and people's lives lost by fire, and crashes. Examples are an MD-11 which burned and was destroyed in Canada, and an MD-80 which was destroyed by fire and crashed in Texas, USA, and many others. These crashes were blamed on insulation blankets which caught fire and burned. The blankets embodied fibers which were relatively low-temperature fibers and so melted at high temperatures.
An object of the invention is to provide a glass which has good insulation and acoustical properties, high strength, a high modulus of elasticity and high temperature resistance properties.
Another object is to provide a glass which has high strength and which can be drawn into long, strong glass fibers.
Substantial cost reductions are achieved because of the utilization of relatively inexpensive raw materials and lower energy use, which provide high temperature resistance", good insulation and acoustical properties and high strength.
Very little refining is reguired to provide. freedom from impurities, thus allowing continuous or discontinuous fibers to be manufactured with relative ease.
The glass compositions of this invention can be formed into long and/or short, stable glass fibers.
Best Mode For Carrying Out The Invention
The present invention relates to glass compositions and particularly to glass compositions having good fiberizing characteristics, high strength, high durability at high temperatures, and high modulus of elasticity.
In the course of research efforts and development- work relative to the present invention, a wide range of fiber diameters were investigated, such range being from 0.5 to 5 microns. High temperature insulation values were obtained throughout such range.
High temperature insulation values were obtained throughout the range of, and independent of, fiber diameters.
The glass specimens were prepared utilizing a specific raw material which included silica, alumina, titania, zirconia and other oxides.
Glasses of this invention were prepared by melting raw batch material in the following approximate ranges of temperatures: between about 2,600°F to about 2,900°F, utilizing conventional refractory containers.
Glass compositions according to the invention have a liquidous temperature of approximately 2,400°F, which is suitable for glass forming.
The glass can be formed into fibers for insulation and acoustical parts using the centrifugal rotary process (vertical and horizontal), or blowing and flame processes. It can also be drawn into continuous and staple fibers.
The material of the invention differs from other high temperature glasses in that, the fibers of the invention differ from prior art in that the material of the invention has good resistance to devitrification at the forming temperature, and requires lower processing energy than other high temperature fibers .
The molten glass may also be formed into fibers on a conventional drawing wheel, at speeds up to 12,000
feet per minute at temperatures between 2,400°F to about 2,900°F. Speeds between about 3,000 to about 10,000 feet per minute are preferable in order to provide optimum filament properties. Fibers may be drawn from about 9 microns to about 14 microns in diameter. Diameters of about 9 microns are preferred. Fibers were produced using the centrifugal, blowing and flame processes.
In this research work, resultant fibers were collected on a metal conveyor, and maintained thereon during the rest of the manufacture process.
Compositions according to the present invention provide a reduction of cost of approximately 20% when compared to other high temperature fibers, because of the use of less expensive raw materials, and lower energy requirements in processing them into glass fibers. In addition, it has been determined that less binder is required than in known, 'commercially available compositions due to the improved surface condition and high strength off the fibers. Insulation fiber diameters may range from about
0.5 to 5 microns. All of the above processes may be utilized tomanufacture glass fibers in the above noted diameter range .
In the course of development research, it has been postulated that the results obtained are provided by the
amorphous glass fibers being converted during the burn- through tests into a ceram glass which forms a fiber mat in which the fiber integrity is maintained, thus preventing high temperatures from penetrating the insulation blanket containing the fibers according to the invention.
Temperatures as high as 2,200°F are withstood", as in aircraft insulation blankets, for several hours.
The following typical batch blends were mixed anόl melted in a refractory furnace and the resultant glasses were successfully fiberized into continuous glass fibers:
TYPICAL BATCH BLENDS
Raw Materials Batc Weights
Silica Sand 24'3.86 249.33 251.35
Iron Oxide 35.75 26.15 22.31 Kaolin 94.92 97.15 98.09
Soda Ash 8.47 8.68 8.72
Dolomite Limestone 44.84 44.03 46.68
Titanium Dioxide 3.65 3.73 3.75
Manganese Oxide 0.90 1.0 1.25
Fibers according to the present invention, for insulation blankets, may have the following components having the following ranges of percentages:
COMPOSITIONAL RANGE Oxides Oxide Weight % sio2 10.23 to 81.81
A1203 2. 0. to 25.91
Na20 0 to 5.80 κ2o 0 to 5.70
CaO 3. 76 to 10.5
MgO 1. 84 to 10.5
Fe20+FeO 4. 64 to' 15.5 τio2 0 to 3.0
Zr02 0 to 5.0
MnO 0 to 6.0
Set forth Below are illustrative examples of exemplary embodiments of the present invention.
EXAMPLE 1
Oxides Weight Percent S i Oo 46.23
A12°3 25.91
Na20 2.40 κ2o 0.82
CaO 8.27
1Q gO 4.06
Fe203+FeO 10.22
TiO, 1.58
ZrO, 0.01
P2°5 0.28
15. MnO 0.23
EXAMPLE 2
Oxides Weight Percent sιo2 58.12
A1203 11.15
20. Na20 2.24 κ2o 0.76
CaO 7.71
MgO 3.78
Fe203+FeO 9.52
25 TiO, 1.48
ZrO« 4.77 p2°5 0.26 MnO 0.22
EXAMPLE 3
Oxides Weight Percent
Si02 62.95
A12°3 11.13
Na20 2.24 κ2o 0.76
CaO 7.70
MgO 3.77
Fe20 +FeO 9.51
TiO _, 1.47
ZrOr 0.01
P2°5 0.26
MnO 0.22
EXAMPLE 4
Oxides Weight Percent
Si02 53.69
A1203 13.84
Na20 2.79 κ2o 0.95
CaO 9.61
MgO 4.71
Fe203 +FeO 11.87 τio2 1.83
ZrO 0.08
P2°5 0.32 MnO 0.27
EXAMPLE 5
Oxides Weight Percent sio2 55.25
A12°3 18.25
Na20 2.30 κ2o 1.80
CaO 8.38
MgO 3.97
Fe203+Fe0 8.50
TiO, 1.09
ZrO, 0.31
P2°5 0.20
MnO 0.18
EXAMPLE 6
Oxides Weight Percent
Si02 67.55
Al2°3 9.76
Na20 1.96 κ2o 0.67
CaO 6.74
MgO 3.30
Fe203+FeO 8.32
TiO, 1.28
ZrO, 0.01
P2°5 0.22
MnO 0.19
EXAMPLE 7
Oxides Weight Percent
Si02 70.02
A1203 10.14 a20 2.03 κ2o 0.01
CaO 6.53
MgO 4.26
Fe203+FeO 5.26
TiO, 1.33
Zr02 0 P2°5 0
MnO 0
Research and testing after the filing of : the inventor' s original application have determined that glass fibers wherein substitution for deleted respective oxides in certain glass fiber compositions defined in the original application, provide improved properties and excellent results. Glass fibers were utilized wherein certain deletions of respective oxides were detected and/or new oxides were added to enhance glass fiber properties, such as enhanced moisture resistance, acoustical properties, and strength. It was determined that these oxides may be substituted for or used in combination with certain oxides specified in the inventor's parent application. These newly-utilized oxides include lithium oxide (Li„0) and boron oxide (B_0_) . It was determined that calcium oxide, sodium oxide, potassium oxide, and magnesium oxide may be replaced or utilized in conjunction with either Li20 or B203, and further that iron should preferably be present in the form of Fe„0_+Fe0. Minor oxides identified in the claims, are in small amounts normally resulting from impurities in raw material^., • and do not affect desired properties.
In the research and testing, burn-through tests were conducted utilizing Federal Aviation Authority prescribed burn-through test equipment. • Blankets comprising
fibers according to the present invention prevented burn- through for periods of several hours, typically 7 hours or more and up to 12 hours in some instances. Batch burn-through temperatures up to about 2,300° were maintained and achieved for extended periods of time. In the research and testing, fiber insulation blankets were utilized which were fabricated of fibers manufactured in the following compositional ranges:
COMPOSITIONAL RANGE
Oxides Oxide Weight %
SiO, 49 to 76
A12°3 2 to 23
B2°3 0 to 9
Li20 0 to 9
Na20 0 to 12 κ2o 0 to 6
CaO 3 to 15 MgO 2 to 15
Fe203+FeO 1 to 18 TiO 0 to 4
P2°5 0 to 4
Particular respective compositions within the above compositional range are defined in the accompanying claims.
In addition to the foregoing, the research and testing further demonstrated that other less expensive raw materials may be substituted or utilized in conjunction with originally disclosed raw materials. These raw materials include boric acid, borax, basalt, cullet, dolime, lithium carbonate, and colemanite. Set forth below are typical batch blends that were mixed and melted in a refractory furnace, the resultant glasses being successfully fiberized into continuous insulation glass fibers.
TYPICAL BATCH BLENDS
Raw Materials Batch Weighbs
Batch Batch Batch Batch Batch Batch Batch No. 1 No. 2 No. 3 No. 4 No. 5 No. 6 No. 7
Silica Sand 246.72 203.99 174 00 176.64 135.39 200.18 211.92
Iron Oxide 30.56 5.34 36 76 37.94 24 62 36.57 31.12
Alumina Hydrate 35.24 * » 81 96 83.56 • • • • •
Kaolin 62.66 . 73 48 108.67 95.40
Colemanite • • . 21.32
Boric Acid • • 14 84 • •
Borax 3.74 • * • • •
Soda Ash 10 92 • * 4 84 5.08 • * 3.56
Potash 3 68 • • » • * * •
Lithium Carbonate • • • • • • • • 17.04
Dolomite Limestone 72 88 • • 87 64 75.92
Dolime • 26.20 . • • 25 68 38.17 40.96
Titanium Dioxide • 2.08 • • * • 3.77 • •
Basalt * 150.00 • • • 150 .00. • • • •
Cullet 11 t • * 44 83 66.63 • *
Set forth below are illustrative examples of the later developed embodiments of the invention.
EXAMPLE 8
Oxides Weight Percent sio2 67.55
A1203 9.76 Na20 0.67 κ2o 1.96
CaO 6.74
10, MgO 3.30
Fe203+FeO 8.32
Ti0 1.28
ZrO, 0.01
P2°5 0.22
15 MnO 0.19
■EXAMPLE 9
Oxides Weight Percent sιo2 68.00
A1203 9.06
20. B2°3 2.01
Na20 2.53 κ2o 0.42
CaO 6.23
MgO 3.06
25 Fe203+FeO 7.70
TiO, 1.19
EXAMPLE 10
O ides We:ight Percent sιo2 67, .36
A12°3 9, .76
Li20 2, .86
Na20 1, .00
CaO 5, .28
MgO 3, .80
Fe203+FeO 8 .46
TiO, 1, .48
EXAMPLE 11
Oxide s Weight Percent
A1203 2, .50
Na20 13, .00
B2°3 6, .00
CaO 6 .70
MgO 1 .85
Fe203 +FeO 4 .01
TiO, 0 .70
EXAMPLE 12
Oxides Weight Percent
SiO, 68.00
A12°3 2.50
Na2° 13.00
B2°3 6.00
CaO 6.70
MgO 2.71
Fe203+FeO 1.00
TiO, 1.09
It will be understood that various- changes and modif cations may be made from the preferred embodiments discussed above without departing from the scope of the present invention, which is established by the following claims and equivalents thereof.
Claims
1. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
SiOp in an amount ranging from about 46.0 to about 71.0 weight percent,
Al-,0., in an amount ranging from about 9.0 to about 26.0 weight percent,
Na„0 in an amount ranging from about 0 to about 5.80 weight percent, κ?0 in an amount ranging from about 0 to about
5.70. weight percent,
CaO in an amount ranging from about 3.76 to about 10.5 weight percent,
MgO in an amount ranging from about 1.84 to about 10..5 weight percent,
Fe?0.-,+FeO in an amount ranging from about 4.64 to about 15.5 weight percent, and
TiO„ in an amount ranging from about 0.72 to about 3.0 weight percent.
2. The batch blend of Claim 1, wherein the resulting composition is essentially free ■ of N ?0 and 2o.
3. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
SiO^ in an amount of about 46.23 weight percent, Al„0-j in an amount of about 25.91 weight percent,
Na O in an amount of about 2.40 weight percent,
K?0 in an amount of about 0.82 weight percent, CaO in an amount of about 8.27 weight percent, MgO in an amount of about 4.06 weight percent, Fe„O + eO in an amount of about 10.22 weight percent,
TiO? in an amount of about 1.58 weight percent, ZrO„ in an amount of about Q.01 weight percent, P20-. in an amount of about 0.28 weight percent, and
MnO in an amount of about 0.23 weight percent.
4. The batch blend of Claim 3, wherein the resulting composition is essentially free of ZrO?.
5. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
Si02 in an amount of about 61.03 weight percent, Al„03 in an amount of about 11.71 weight percent, Na„0 in an amount of about 2.35 weight percent, K«0 in an amount of about 0.80 weight percent, CaO in an amount of about 8.10 weight percent, MgO in an amount of about 3.97 weight percent, Fe20_+FeO in an amount of about 9.99 weight percent,
Ti02 in an amount of about 1.55 weight percent, Zr02 in an amount of about 0 weight percent, P„0-. in an amount of about 0.27 weight percent, and
MnO in an amount of about 0.23 weight percent.
6. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
Si02 in an amount of about 64.95 weight percent, Al„0._ in am amount of about 11.13 weight percent,
N 20 in an amount of about 2.24 weight percent, K„0 in an amount of about 2.24 weight percent, CaO in an amount of about 3.76 weight percent, MgO in an amount of about 3.77 weight percent, Fe„0^+FeO in an amount of about 9.51 weight percent,
Ti0 in an amount of about 1.47 weight percent ZrO„ in an amount of about 0.01.weight percent, PoO-. in an amount of about 0.70 weight percent, and
MnO in an amount of about 0.22 weight percent.
7. The batch blend of Claim 6, wherein the resulting composition is essentially free of ZrΘ .
8. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
SiO? in an amount of about 53.69 weight percent, Al„0-« in an amount of about 13.84 weight percent, Na_0 in an amount of about 2.79 weight percent, K„0 in an amount of about 0.95 weight percent, CaO in an amount of about 9.61 weight percent, MgO in an amount of about 4.71 weight percent, Fe„0-,+FeO in an amount of about 11.87 weight percent,
TiO? in an amount of about 1.83 weight percent, Zr02 in an amount of about 0 weight percent, P O-. in an amount of about 0.38 weight percent, and
MnO in an amount of about 0.33 weight percent.
9. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
SiO„ in an amount of about 55.25 weight percent, A1„0_ in an amount of about 18.25 weight percent, Na„0 in an amount of about 2.30 weight percent, K?0 in an amount of about 1.80 weight percent, CaO in an amount of about 8.38 weight percent, MgO in an amount of about 3.97 weight percent, Fe 0-,+FeO in an amount of about 8.50 weight percent,
Ti02 in an amount of about 1.09 weight percent, Zr02 in an amount of about 0.31 weight percent, P205 in an amount of about 0.20 weight percent, and
MnO in an amount of about 0.18 weight percent.
10. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
SiO„ in an amount of about 67.55 weight percent, Al20_ in an amount of about 9.76 weight percent,
Na 20 in an amount of about 1.96 weight percent, „0 in an amount of about 0.67 weight percent, CaO in an amount of about 6.74 weight percent, MgO in an amount of about 3.30 weight percent, Fe„0-.+FeO in an amount of about 8.32 weight percent,
TiO„ in an amount of about 1.28 weight percent, Z-rO„ in an amount of about 0.01 weight percent, PpOp. in an amount of about 0.22 weight percent, and
MnO in an amount of about 0.19 weight percent.
11. The batch blend of Claim 10, wherein the resulting composition is essentially free of ZrO?.
12. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
SiO„ in an amount of about 70.02 weight percent, Al O in an amount of about 10.14 weight percent, Na„0 in an amount of about.2.03 weight percent, K-0 in an amount of about 0.01 weight percent, CaO in an amount of about 6.53 weight percent, MgO in an amount of about 4.26 weight percent, Fe„Oo+FeO in an amount of about 5.26 weight percent,
TiO„ in an amount of about 1.33 weight percent, ZrO? in an amount of about 0 weight percent,
P20_. in an amount of about 0 weight percent, and
MnO in an amount of about 0 weight percent.
13. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
Si02 in an amount of about 46.47 weight percent, Al2Oo in an amount of about 25.91 weight percent, Na„0 in an amount of about 2.41 weight percent, K„0 in an amount of about 0.95 weight percent, CaO in an amount of about 8.31 weight percent, MgO in an amount of about 4.08 weight percent, e20^+FeO in an amount of about 10.27 weight percent, and
Ti0 in an amount of about 1.60 weight percent.
14. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
Si02 in an amount of about 66.92 weight percent, Al_0 in an amount of about 11.42 weight percent, a20 in an amount of about 2.59 weight percent, K?0 in an amount of about 2.59 weight percent, CaO in an amount of about 3.81 weight percent, MgO in an amount of about 4.01 weight percent, Fe203+FeO in an amount of about 8.66 weight percent, and
Ti02 in an amount of about 0.72 weight percent.
15. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
SiO? in an amount of about 55.50 weight percent, Al„0_ m an amount of about 18.33 weight percent, Na„0 in an amount of about 2.31 weight percent, K 0 in an amount of about 1.81 weight percent, CaO in an amount of about 8.42 weight percent, MgO in an amount of about 3.99 weight percent, Fe203+FeO in an amount of about 8.54 weight percent, and
Ti02 in an amount of about 1.10 weight percent.
16. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
Si02 in an amount of about 67.83 weight percent, Al2Q3 in an amount of about 9.80 weight percent, Na20 in an amount of about 1.97 weight percent, K 0 in an amount of about 0.67 weight percent, CaO in an amount of about 6.77 weight percent, MgO in an amount of about 3.31 weight percent, Fe2'0 +FeO in an amount of about 8.36 weight percent, and
TiO„ in an amount of about 1.29 weight percent.
17. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
Si0 in an amount of about 70.31 weight percent, Al„0_ in an amount of about 10.18 weight percent, Na?0 in an amount of about 2.03 weight percent, K20 in an amount of about 0.01 weight percent, CaO in an amount of about 6.55 weight percent, MgO in an amount of about 4.27 weight percent,
10. Fe203+FeO in an amount of about 5.28 weight percent, and
Ti0 in an amount of about 1.37 weight percent.
18. The blend according to Claim 13, wherein the batch is substantially free of Ti02 and is resistant to heat and fire for a substantial period of at least three hours to prevent burn-thrqugh by the conversion of at least a portion of the fibers into a fiber mat of ceram glass.
19. The blend according to Claim 14, wherein the batch is substantially free of Ti02 and is resistant to heat and fire for a substantial period of at least three hours to prevent burn-through by the conversion of at least a portion of the fibers into a fiber mat of ceram glass.
20. The blend according to Claim 17, wherein the batch is substantially free of Ti02 and is resistant to heat and fire for a substantial period of at least three hours to prevent burn-through by the conversion of at least a portion of the fibers into a fiber mat of ceram glass.
21. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
Si02 in an amount ranging from about 49.0 to about 76.0 weight percent,
B„03 in an amount ranging from about 0 to about 9 weight percent,
Li„0 in an amount ranging from about 0 to about 9 weight percent, A1„0_ in an amount ranging from about 2.0 to about 26.0 weight percent,
Na20 in an amount ranging from about 0 to about 12. Q weight percent,
K„0 in an amount ranging from about 0 to about 6.0 weight percent,
CaO in an amount ranging from about 3.0 to about 15.0 weight percent,
MgO in an amount ranging from about 2.0 to about 15.0 weight percent, Fe„03+FeO in an amount ranging from about 1.0 to about 18.0 weight percent,
Ti02 in an amount ranging from about 0 to about 4.0 weight percent, and
P205 in an amount ranging from about Q to about 4.0 weight percent.
22. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
Si0„ in an amount of about 67.55 weight percent, Al„03 in an amount of about 9.76 weight percent, Na?0 in an amount of about 0.67 weight percent, B„03 in an amount of about 1.96 weight percent, CaO in an amount of about 6.74 weight percent, MgO in an amount of about 3.30 weight percent, Fe„0-.+FeO in an amount of about 8.32 weight percent,
TiO„ in an amount of about 1.28 weight percent, Zr0 in an amount of about 0.01 weight percent, P?0_. in an amount of about 0.22 weight percent, and
MnO in an amount of about Q.19 weight percent.
23. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
SiO„ in an amount of about 67.55 weight percent, Al„0_ in an amount of about 9.76 weight percent, Na„0 in an amount of about 0.67 weight percent, Li?0 in an amount of about 1.96 weight percent, CaO in an amount of about 6.74 weight percent, MgO in an amount of about 3.30 weight percent, Fe203+FeO in an amount of about 8.32 weight percent,
Ti0 in an amount of about 1.28 weight percent, Zr02 in an amount of about 0.01 weight percent, P205 in an amount of about 0.22 weight percent, and
MnO in an amount of about 0.19 weight percent.
24. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
SiO„ in an amount of about 67.55 weight percent, A1„03 in an amount of about 9.76 weight percent,
Na 20 in an amount of about 0.67 weight percent,
K„0 in an amount of about 1.96 weight percent, CaO in an amount of about 6.74 weight percent, MgO in an amount of about 3.30 weight percent,° Fe 0_+FeO in an amount of about 8.32 weight percent,
Ti02 in an amount of about 1.28 weight percent, ZrO„ in an amount of about 0.01 weight percent, P20-. in an amount of about 0.22 weight, percent,5 and
MnO in an amount of about 0.19 weight percent.
25. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
Si02 in an amount of about 49.0 weight percent, Al„0_ in an amount of about 23.0 weight percent, B20_ in an amount of about 2.35 weight percent, Na20 in an amount of about 1.04 weight percent, CaO in an amount of about 8.31 weight percent, MgO in ah amount of about 4.08 weight percent,Q e 0 + eO in an amount of about 10.27 weight percent, and
Ti02 in an amount of about 1.59 weight percent.
26. A batch blend to 'produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
SiO„ in an amount of about 67.36 weight percent, A1„03 in an amount of about 9.76 weight percent, Li„0 in an amount of about 2.86 weight percent, Na„0 in an amount of about 1.00 weight percent, CaO in an amount of about 5.28 weight percent, MgO in an amount of about 3.80 weight percent, Fe203+FeO ih an amount of about 8.46 weight percent, and
Ti02 in an amount of about 1.48 weight percent.
27. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
Si02 in an amount of about 65.16 weight percent, A1„0_ in an amount of about 11.18 weight percent,
B„0 in an iamount of about 3.01 weight percent, CaO in an amount of about 7.14 weight percent, MgO in an amount of about 3.99 weight percent, Fe20_+Fe0 in an amount of about 8.95 weight Q percent, and
Ti02 in an amount of about 0.57 weight percent.
28. A batch blend to produce a. glass composition useful for forming glass fibers of high, heat resistance, comprising:
Si02 in an amount of about 56. Ol weight percent,
Al „0. in an amount of about 13.92 weight percent,
B«0 in an amount of about 4.01 weight percent, Na„0 in an amount of about 2.92 weight percent, K 0 in an amount of about 0.96 weight percent, CaO in an amount of about 8.40 weight percent, Fe203+FeO in an amount of about 11.94 weight percent, and
Ti02 in an amount of about 1.84 weight percent.
29. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
SiO„ in an amount of about 66.51 weight percent, Al„0_ in an amount of about 9.34 weight percent, Li?0 in an amount of about 3.41 weight percent, Na„0 in an amount of about 2.81 weight percent, CaO in an amount of about 6.41 weight percent, MgO in an amount of about 2.99 weight percent, and
Fe 0,+PeO in an amount of about 8.53 weight percent.
30. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistahce, comprising:
Si02 in an amount of about 68.00 weight percent, A1?0 in an amount of about 9.06 weight percent,
B 03 in an amount of about 2.01 weight percent, Na„0 in an amount of about 2.33 weight percent, K?0 in an amount of about 0.42 weight percent, CaO in an amount of about 6.23 weight percent,° MgO in an amount of about 3.06 weight percent,
Fe„03+FeO in an amount of about 7.70 weight percent, and
Ti0 in an amount of about 1.19 weight percent.
31. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
Si0„ in an amount of about 65.24 weight percent, AlpO— in an amount of about 2.50 weight percent,
B„03 in an amount of about 6.00 weight percent, Na O in an amount of about 13.00 weight percent, CaO in an amount of about 6.70 weight percent, MgO in an amount of about 1.85 weight percent, Fe„0_+FeO in an amount of about 4.01 weight percent, and
TiO„ in an amount of about 0.70 weight percent.
32. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
SiO„ in an amount of about 67.50 weight percent, Al„0_ in an amount of about 9.34 weight percent, Li„0 in an amount of about 2.31 weight percent, K„0 in an amount of about 0.81 weight percent, CaO in an amount of about 8.41 weight percent, MgO in an amount of about 2.00 weight percent, Fe„03+FeO in an amount of about 8.53 weight percent, and
Ti02 in an amount of about 1.10 weight; percent.
33. A batch blend to produce a glass composition useful fo forming glass fibers of high heat resistance, comprising:
Si02 in an amount of about 46.47 weight percent, A1?03 in an amount of about 25.91 weight percent, B20_ in an amount of about 2.41-: -weight percent, Na„0 in an amount of about 2.55 weight percent, CaO in an amount of about 8.31 weight percent, MgO in an amount of about 4.08 weight percent, and
Fe„03+FeO in an amount of about 10.27 weight percent,
34. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
Si02 in an amount of about 66.92 weight percent, lpO- in an amount of about 11.42 weight percent,
Na_0 in an amount of about 2.59 weight percent, B203 in an amount of about 4.24 weight percent, CaO in an amount of about 4.02 weight percent, MgO in an amount of about 0.81 weight percent, and
Fe„0_+FeO in an amount of about 10.00 weight percent.
35. A batch blend to produce a glass composition useful for forming glass fibers of high heat resistance, comprising:
SiO„ in an amount of about 70.31 weight percent, Al„03 in an amount of about 8.30 weight percent, Na?0 in an amount of about 2.03 weight percent, B„03 in an amount of about 1.Q1 weight percent, CaO in an amount of about 6.55 weight percent, MgO in an amount of about 3.27 weight percent, and e203+FeO in an amount of about 8.53 weight percent.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/667,179 US6998361B2 (en) | 2002-03-04 | 2003-09-19 | High temperature glass fiber insulation |
| PCT/US2004/030381 WO2005033029A2 (en) | 2002-03-04 | 2004-09-15 | High temperature glass fiber insulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1704124A2 true EP1704124A2 (en) | 2006-09-27 |
| EP1704124A4 EP1704124A4 (en) | 2008-03-19 |
Family
ID=36847778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04809759A Withdrawn EP1704124A4 (en) | 2003-09-19 | 2004-09-15 | High temperature glass fiber insulation |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP1704124A4 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5962354A (en) * | 1996-01-16 | 1999-10-05 | Fyles; Kenneth M. | Compositions for high temperature fiberisation |
| EP1086930A1 (en) * | 1998-04-14 | 2001-03-28 | Nitto Boseki Co., Ltd. | Glass fiber having low dielectric constant and woven fabric of glass fiber made therefrom |
| US20010008864A1 (en) * | 1996-10-16 | 2001-07-19 | Shinichi Tamura | Glass fiber of low permittivity |
| WO2003076354A1 (en) * | 2002-03-04 | 2003-09-18 | Glass Incorporated | High temperature glass fiber insulation |
-
2004
- 2004-09-15 EP EP04809759A patent/EP1704124A4/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5962354A (en) * | 1996-01-16 | 1999-10-05 | Fyles; Kenneth M. | Compositions for high temperature fiberisation |
| US20010008864A1 (en) * | 1996-10-16 | 2001-07-19 | Shinichi Tamura | Glass fiber of low permittivity |
| EP1086930A1 (en) * | 1998-04-14 | 2001-03-28 | Nitto Boseki Co., Ltd. | Glass fiber having low dielectric constant and woven fabric of glass fiber made therefrom |
| WO2003076354A1 (en) * | 2002-03-04 | 2003-09-18 | Glass Incorporated | High temperature glass fiber insulation |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2005033029A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1704124A4 (en) | 2008-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2005033029A2 (en) | High temperature glass fiber insulation | |
| CA2627366C (en) | Glass compositions | |
| US20030166446A1 (en) | High temperature glass fiber insulation | |
| US8450226B2 (en) | High temperature glass fiber insulation | |
| CA2204772C (en) | Man-made vitreous fibres | |
| US4764487A (en) | High iron glass composition | |
| CA2073872C (en) | Mineral fibres | |
| US9073780B2 (en) | Raw material for producing basalt fibers | |
| AU2007296024B2 (en) | Compositions for mineral wools | |
| US7977263B2 (en) | Glass fiber for high temperature insulation | |
| CA2530305C (en) | High temperature resistant vitreous inorganic fiber | |
| CA2469063A1 (en) | Fibres and their production | |
| JPS5824385B2 (en) | fiberglass composition | |
| JPS62288137A (en) | Alkali-resistant glass fiber | |
| KR20110099325A (en) | Composition for high performance glass fibers and fibers formed therewith | |
| JPH09503476A (en) | Composition for high temperature fiberization | |
| CA2768829A1 (en) | Glass compositions and fibers made therefrom | |
| CA2375719C (en) | Glass fiber composition | |
| AU741801B2 (en) | Artificial mineral wool composition | |
| GB2220654A (en) | Glass composition and batch blend for its production | |
| CA2713482A1 (en) | High alkali glass composition | |
| EP1704124A2 (en) | High temperature glass fiber insulation | |
| WANG | CANMET |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20060722 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: HR |
|
| RAX | Requested extension states of the european patent have changed |
Extension state: HR Payment date: 20060729 |
|
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1096374 Country of ref document: HK |
|
| A4 | Supplementary search report drawn up and despatched |
Effective date: 20080218 |
|
| RIC1 | Information provided on ipc code assigned before grant |
Ipc: C03C 3/087 20060101ALI20080212BHEP Ipc: C03C 13/00 20060101ALI20080212BHEP Ipc: C03C 1/00 20060101AFI20050420BHEP |
|
| 17Q | First examination report despatched |
Effective date: 20090416 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20091027 |
|
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: WD Ref document number: 1096374 Country of ref document: HK |