JP3084769B2 - Heat and UV absorbing glass - Google Patents
Heat and UV absorbing glassInfo
- Publication number
- JP3084769B2 JP3084769B2 JP03050663A JP5066391A JP3084769B2 JP 3084769 B2 JP3084769 B2 JP 3084769B2 JP 03050663 A JP03050663 A JP 03050663A JP 5066391 A JP5066391 A JP 5066391A JP 3084769 B2 JP3084769 B2 JP 3084769B2
- Authority
- JP
- Japan
- Prior art keywords
- glass
- ultraviolet
- heat
- ceo
- sno
- 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.)
- Expired - Fee Related
Links
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
- C03C3/095—Glass compositions containing silica with 40% to 90% silica, by weight containing rare earths
Description
【０００１】[0001]
【産業上の利用分野】本発明は、建築用、車両用ガラス
に関する。The present invention relates to architectural and vehicular glass.
【０００２】[0002]
【従来の技術】熱線吸収能に優れた建築用、車両用ガラ
スとしては、酸化鉄を含有した青色ガラスがある。熱線
は２価の鉄イオンによって吸収されるので、ガラス中に
含まれる酸化鉄の酸化、還元平衡を還元側に移動させて
熱線吸収能を高めるように、酸化鉄とともに酸化錫を含
有したガラスが提案されている（米国特許３７７９７３
３号）。2. Description of the Related Art Blue glass containing iron oxide is known as glass for architectural and vehicular use having excellent heat ray absorbing ability. Since heat rays are absorbed by divalent iron ions, glass containing tin oxide together with iron oxide is used to increase the heat ray absorption capacity by shifting the oxidation and reduction equilibrium of iron oxide contained in the glass to the reduction side. (US Patent 3,779,973).
No. 3).
【０００３】また、熱線と紫外線を同時に吸収する建築
用、車両用ガラスとしては酸化チタンの紫外線吸収能を
利用した、酸化鉄、酸化錫、酸化チタンを含むガラスが
提案されている（米国特許４７０１４２５号）。[0003] Glasses containing iron oxide, tin oxide, and titanium oxide utilizing the ultraviolet absorbing ability of titanium oxide have been proposed as architectural and vehicular glasses that simultaneously absorb heat rays and ultraviolet rays (US Pat. No. 4,701,425). issue).
【０００４】更に、Ｖ2Ｏ5、Ｆｅ2Ｏ5、ＴｉＯ2 を含有
させた熱線、紫外線吸収ガラス（特開昭５９−５００４
５号）、ＴｉＯ2、Ｆｅ2Ｏ3 を含有させた熱線、紫外線
吸収ガラス（特開昭６１−１３６９３６号）も提案され
ている。Further, a heat ray or ultraviolet ray absorbing glass containing V 2 O 5 , Fe 2 O 5 , and TiO 2 (Japanese Patent Application Laid-Open No.
No. 5), a heat ray or ultraviolet ray absorbing glass containing TiO 2 and Fe 2 O 3 (JP-A-61-136936) have also been proposed.
【０００５】ガラスに含有された金属イオンの熱線、紫
外線吸収能は古くから知られており、紫外線吸収剤とし
ては、Ｔｉ4+、Ｃｅ3+、Ｃｅ4+、Ｆｅ3+、Ｖ5+、Ｃｒ6+
が、熱線吸収剤としては、Ｆｅ2+、Ｃｕ2+が一般に用い
られている。[0005] The heat ray and ultraviolet ray absorbing ability of metal ions contained in glass have been known for a long time, and as the ultraviolet ray absorbent, Ti 4+ , Ce 3+ , Ce 4+ , Fe 3+ , V 5+ , Cr 6+
However, Fe 2+ and Cu 2+ are generally used as heat ray absorbers.
【０００６】[0006]
【発明が解決しようとする課題】しかし、建築用、車両
用ガラス、特に車両用ガラスに於いては、可視光線透過
率の高いことが要求されるので、可視部に吸収を有する
金属イオンないしは金属酸化物は使用しないことが望ま
しい。Ｖ2Ｏ5を用いると必然的にＶＯ2、Ｖ2Ｏ3が、Ｃ
ｒＯ3を得ようとすると、同様にＣｒ2Ｏ3がガラス中に
生じてガラスを着色し、可視光線透過率を低下させるの
で、これらの金属イオンないしは金属酸化物は本発明の
目的に合致しない紫外線吸収剤である。However, glass for architectural and vehicular use, particularly for glass for vehicular use, is required to have a high visible light transmittance, so that metal ions or metals having absorption in the visible part are required. It is desirable not to use oxides. When V 2 O 5 is used, VO 2 and V 2 O 3 inevitably become C
When trying to obtain rO 3 , Cr 2 O 3 is similarly generated in the glass to color the glass and reduce the visible light transmittance, so that these metal ions or metal oxides do not meet the purpose of the present invention. It is an ultraviolet absorber.
【０００７】また、ＣｕＯは容易に還元されるので、例
えばフロ−ト法でガラスを製造する場合にはこれを熱線
吸収剤として用いることができない。[0007] Further, since CuO is easily reduced, it cannot be used as a heat ray absorbent, for example, when producing glass by a float method.
【０００８】前述したように、熱線、紫外線を同時に吸
収し可視光線透過率の高いガラスを得るには、熱線吸収
剤としてＦｅＯを含有し、紫外線吸収剤としてＦｅ
2Ｏ3、ＴｉＯ2、ＣｅＯ2のうちの１種以上を含有するガ
ラスが望ましいことになる。ＴｉＯ2、Ｆｅ2Ｏ3を同時
に含有するガラス及びＴｉＯ2、Ｆｅ2Ｏ3、ＳｎＯ2 を
同時に含有するガラスは、前述したように公知である。As described above, in order to simultaneously absorb heat rays and ultraviolet rays and obtain a glass having a high visible light transmittance, FeO is contained as a heat ray absorbent and FeO is contained as an ultraviolet ray absorbent.
A glass containing one or more of 2 O 3 , TiO 2 and CeO 2 would be desirable. Glass containing TiO 2 and Fe 2 O 3 at the same time and glass containing TiO 2 , Fe 2 O 3 and SnO 2 at the same time are known as described above.
【０００９】しかし、ＴｉＯ2 は３００ｎｍより短い波
長の紫外線を吸収するが、３００〜４００ｎｍの近紫外
線の吸収は不十分であるという問題点があった。However, TiO 2 absorbs ultraviolet light having a wavelength shorter than 300 nm, but has a problem that absorption of near ultraviolet light having a wavelength of 300 to 400 nm is insufficient.
【００１０】また、Ｆｅ2Ｏ3を用いて近紫外線の吸収を
高めようとすると、Ｆｅ2Ｏ3による吸収が可視域にまで
及び、ガラスの着色を高めるとともに可視光線透過率を
下げるので好ましくない。Further, undesirable when trying to increase the absorption of near-ultraviolet light by using Fe 2 O 3, and absorption by Fe 2 O 3 is up to the visible range, since lowering the visible light transmittance to increase the coloration of the glass .
【００１１】ＣｅＯ2 を用いれば、近紫外線の吸収が大
きく、しかも可視光線透過率の高いガラスが得られる。
熱線及び紫外線を同時に吸収するには、ＣｅＯ2とＦｅ2
Ｏ3 を同時に含有させればよい。When CeO 2 is used, a glass having high absorption of near-ultraviolet rays and high visible light transmittance can be obtained.
To simultaneously absorb heat rays and ultraviolet rays, CeO 2 and Fe 2
O 3 may be contained at the same time.
【００１２】しかし、Ｆｅ2Ｏ3、ＣｅＯ2 などの、ガラ
ス中で二つ以上の原子価を取り得る酸化物がガラス中に
存在すると、紫外線を吸収して原子価状態を変化させ
る、いわゆるソラリゼ−ションが生じ、可視光線透過率
を低下させるという不具合があった。However, when an oxide, such as Fe 2 O 3 or CeO 2 , which can take two or more valences in the glass, is present in the glass, it absorbs ultraviolet rays to change the valence state. -A problem that the visible light transmittance is reduced.
【００１３】紫外線吸収によるガラスのソラリゼ−ショ
ンを抑制するＵＶフィルタ−ガラスは、特開昭６３−２
４８７３８号に開示されている。該公報によれば、２．
５〜１７．０重量％のＰｂＯと０．１〜１．７重量％の
ＳｎＯをガラスに共存させることにより、２８０〜５０
０ｎｍの透過帯域のソラリゼ−ションが抑制されること
が示されているが、ソラリゼ−ションを抑制するのは主
としてＰｂＯの作用であり、ＳｎＯはＰｂＯと共存させ
ることでソラリゼーションの抑制効果を高める作用があ
るとされている。A UV filter glass for suppressing the solarization of glass due to ultraviolet absorption is disclosed in
No. 487,838. According to the publication, 2.
By allowing 5 to 17.0% by weight of PbO and 0.1 to 1.7% by weight of SnO to coexist in the glass, 280 to 50%
Although it has been shown that solarization in the transmission band of 0 nm is suppressed, it is mainly the action of PbO that suppresses solarization, and SnO acts to enhance the effect of suppressing solarization by coexisting with PbO. It is said that there is.
【００１４】しかし、本発明の目的とする建築用、車両
用ガラスは、ガラス品質、製造コストの上からフロ−ト
法で製造できることが好ましい。フロ−ト法で生産する
ガラス中にＰｂＯが含有されると、ＰｂＯは還元されて
Ｐｂとなりガラスが透明でなくなるので、ＰｂＯは本発
明の主旨から使用することができない。However, the architectural and vehicular glass, which is the object of the present invention, is preferably manufactured by the float method in view of glass quality and manufacturing cost. If PbO is contained in the glass produced by the float method, PbO is reduced to Pb and the glass is not transparent, so that PbO cannot be used from the gist of the present invention.
【００１５】発明者は、酸化鉄、酸化セリウムを含有す
るガラスに一定の条件を満たす量の酸化錫を導入する
と、熱線、紫外線の吸収が大きくしかもソラリゼ−ショ
ンの小さなガラスができることを見いだし本発明を完成
させた。The inventor of the present invention has found that, when an amount of tin oxide satisfying certain conditions is introduced into a glass containing iron oxide and cerium oxide, a glass having a large absorption of heat rays and ultraviolet rays and a small solarization can be obtained. Was completed.
【００１６】[0016]
【課題を解決するための手段】請求項１の熱線及び紫外
線吸収ガラスは、重量％で表示して本質的に、６０〜８
０％のＳｉＯ2、０〜５％のＡｌ2Ｏ3、０〜５％のＢ2Ｏ
3、１〜１０％のＭｇＯ、５〜１５％のＣａＯ、１０〜
１８％のＮａ2Ｏ、０〜５％のＫ2Ｏ、０．２〜２％のＦ
ｅ2Ｏ3 に換算した酸化鉄、０．２〜２％のＣｅＯ2 に
換算した酸化セリウム、０．５〜６％のＳｎＯ2 に換算
した酸化錫から成り、ＳｎＯ2／ＣｅＯ2が２．２以上で
あることを特徴とする。The heat and ultraviolet absorbing glass of claim 1 is essentially 60 to 8 parts by weight.
0% SiO 2, 0 to 5% of the Al 2 O 3, 0~5% of B 2 O
3 , 1-10% MgO, 5-15% CaO, 10
18% of Na 2 O, 0 to 5% of the K 2 O, 0.2 to 2% of the F
It is composed of iron oxide in terms of e 2 O 3 , cerium oxide in terms of 0.2 to 2% CeO 2, and tin oxide in terms of 0.5 to 6% SnO 2 , wherein SnO 2 / CeO 2 is 2. It is characterized by being 2 or more.
【００１７】[0017]
【作用】ＳｉＯ2 はガラスの骨格をなすもので、６０％
未満ではガラスの耐久性が低下し、８０％を越えるとガ
ラスの溶解性が困難になる。[Function] SiO 2 forms the skeleton of glass and is 60%
If it is less than 80%, the durability of the glass will be reduced. If it exceeds 80%, the glass will have difficulty in melting.
【００１８】Ａｌ2Ｏ3はガラスの耐久性を向上させる成
分であるが、必ずしも必要な成分ではない。５％を越え
るとガラスの溶解が困難になる。Al 2 O 3 is a component that improves the durability of the glass, but is not a necessary component. If it exceeds 5%, melting of the glass becomes difficult.
【００１９】Ｂ2Ｏ3はガラスの耐久性の向上のため、及
び溶融助剤として使用されるが、必須成分ではない。Ｂ
2Ｏ3が５％を越えるとＢ2Ｏ3の揮発などによる成形時の
不都合を生じるので５％を上限とする。B 2 O 3 is used for improving the durability of glass and as a melting aid, but is not an essential component. B
If 2 O 3 exceeds 5%, inconvenience during molding due to volatilization of B 2 O 3 will occur, so the upper limit is 5%.
【００２０】ＭｇＯとＣａＯは、ガラスの耐久性を向上
させると共に、成形時の失透温度、粘性を調整するため
に用いられる。ＭｇＯが１％未満、または１０％を越え
ると失透温度が高くなる。ＣａＯが５％未満、または１
５％を越えると失透温度が高くなり好ましくない。MgO and CaO are used to improve the durability of the glass and to adjust the devitrification temperature and viscosity during molding. If the content of MgO is less than 1% or more than 10%, the devitrification temperature increases. CaO is less than 5% or 1
If it exceeds 5%, the devitrification temperature increases, which is not preferable.
【００２１】Ｎａ2ＯとＫ2Ｏは、ガラスの溶融促進剤と
して用いられる。Ｎａ2Ｏ が１０％未満、或はＮａ2Ｏ
とＫ2Ｏ の合計が１０％未満では溶解性促進の効果が小
さく、Ｎａ2Ｏ が１８％を越えるか、或はＮａ2ＯとＫ2
Ｏの合計が２０％を越えると耐久性が低下する。Ｋ2Ｏ
はＮａ2Ｏに比べて高価であるので５％を上限とする。Na 2 O and K 2 O are used as glass melting accelerators. Na 2 O is less than 10% or Na 2 O
If the total of K 2 O and K 2 O is less than 10%, the effect of promoting solubility is small, and Na 2 O exceeds 18% or Na 2 O and K 2 O
If the total amount of O exceeds 20%, the durability decreases. K 2 O
Is more expensive than Na 2 O, so the upper limit is 5%.
【００２２】酸化鉄はガラス中でＦｅ3+とＦｅ2+として
存在し、Ｆｅ3+が紫外線を吸収し、Ｆｅ2+が熱線を吸収
する。酸化鉄がＦｅ2Ｏ3に換算して０．２％未満では、
熱線及び紫外線の吸収効果が小さく、２％を越えると可
視光線透過率が小さくなるので好ましくない。[0022] Iron oxide is present as Fe 3+ and Fe 2+ in the glass, Fe 3+ absorbs ultraviolet, Fe 2+ absorbs heat rays. If iron oxide is less than 0.2% in terms of Fe 2 O 3 ,
The effect of absorbing heat rays and ultraviolet rays is small, and if it exceeds 2%, the visible light transmittance is undesirably reduced.
【００２３】酸化セリウムはガラス中でＣｅ4+とＣｅ3+
の状態で存在し、何れも紫外線吸収能を有する。ＣｅＯ
2 に換算した酸化セリウムが０．２％未満では紫外線吸
収の効果が小さく、２％を越えると吸収が可視域におよ
び可視光線透過率を低下させるので好ましくない。Cerium oxide is composed of Ce 4+ and Ce 3+ in glass.
And each of them has an ultraviolet absorbing ability. CeO
If the cerium oxide in terms of 2 is less than 0.2%, the effect of ultraviolet absorption is small, and if it exceeds 2%, the absorption is in the visible region and the visible light transmittance is undesirably reduced.
【００２４】酸化錫はＦｅ3+を還元してＦｅ2+の存在量
を増大させ、ガラスの熱線吸収能を高めると共に、Ｆｅ
3+とＣｅ3+がガラス中に共存することによって生じるソ
ラリゼ−ションを抑制する効果がある。ＳｎＯ2に換算
した酸化錫が０．５％ 未満ではこれらの効果が小さ
く、６％を越えても効果は大きくならないので６％を上
限とする。Tin oxide reduces Fe 3+ to increase the amount of Fe 2+ , thereby increasing the heat ray absorbing ability of the glass.
This has the effect of suppressing solarization caused by the coexistence of 3+ and Ce 3+ in the glass. If the tin oxide content in terms of SnO 2 is less than 0.5%, these effects are small, and if it exceeds 6%, the effect does not increase, so the upper limit is 6%.
【００２５】ガラス中に酸化鉄と酸化セリウムが共存す
ると次のような反応によりＦｅ2+の存在量が減少する。 Ｃｅ4+＋Ｆｅ2+→Ｃｅ3+＋Ｆｅ3+ Ｆｅ2+が減少すると、ガラスの熱線吸収能が低下するか
ら好ましくない。この反応を防止してＦｅ2+を増大する
には、ガラス中のＣｅＯ2 含有量に応じて、ＳｎＯ2 含
有量を増大させることが、必要である。そのための必要
条件が、ＳｎＯ2／ＣｅＯ2≧２．２である。When iron oxide and cerium oxide coexist in glass, the amount of Fe 2+ is reduced by the following reaction. Ce 4+ + Fe 2+ → Ce 3+ + Fe 3+ When Fe 2+ decreases, the heat ray absorbing ability of glass decreases, which is not preferable. To prevent this reaction and increase Fe 2+ , it is necessary to increase the SnO 2 content according to the CeO 2 content in the glass. The necessary condition for this is SnO 2 / CeO 2 ≧ 2.2.
【００２６】以上の成分の他に、本発明の主旨を損なわ
ない範囲で本発明に係わるガラスは以下に述べる成分を
含有することができる。耐久性を向上させるために、Ｂ
ａＯ、ＺｎＯ、ＴｉＯ2、ＺｒＯ2が１％以下含有されて
もよい。ガラスの溶融助剤として、Ｌｉ2Ｏ、 Ｆが１％
以下含有されてもよい。清澄剤としてＳＯ3、Ａｓ
2Ｏ3、Ｓｂ2Ｏ3、Ｃｌが１％以下含有されてもよい。In addition to the above components, the glass according to the present invention can contain the following components within a range not to impair the gist of the present invention. To improve durability, B
aO, ZnO, TiO 2, ZrO 2 may be contained 1% or less. 1% Li 2 O, F as glass melting aid
The following may be contained. SO 3 and As as fining agents
2 O 3 , Sb 2 O 3 , and Cl may be contained at 1% or less.
【００２７】[0027]
【実施例】表１に示すガラス組成になるように、珪砂、
苦灰石、ソ−ダ灰、芒硝、酸化鉄、酸化セリウム、酸化
錫を調合したバッチを電気炉中で坩堝を用いて溶融し
た。室温まで徐冷したガラスを所定の厚さに切断、研磨
して光学特性測定用の厚さ４ｍｍの試料を作製した。ソ
ラリゼ−ションを調べるために、試料は高圧水銀灯によ
り２４時間照射された。EXAMPLE Silica sand was used to obtain the glass composition shown in Table 1.
A batch of dolomite, soda ash, sodium sulfate, iron oxide, cerium oxide, and tin oxide was melted in an electric furnace using a crucible. The glass gradually cooled to room temperature was cut into a predetermined thickness and polished to prepare a sample having a thickness of 4 mm for measuring optical characteristics. The samples were illuminated with a high pressure mercury lamp for 24 hours to check for solarization.
【００２８】[0028]
【表１】 [Table 1]
【００２９】表１は本発明に係わる実施例１〜５と、本
発明の範囲から外れる比較例６及び７のガラス組成、更
に水銀灯による照射前後の光学特性、ソラリゼ−ション
によるガラス試料の吸光度の変化を示している。ＹA は
Ａ光源を用いて２゜視野によって測定した時の可視光線
透過率を示す。ＴG は太陽放射エネルギ−の透過率を示
す。λd はＣ光源を用いて２゜視野により測定した時の
主波長を示す。Ｔ1000、Ｔ370 はそれぞれ１０００ｎ
ｍ、３７０ｎｍの透過率を示し、熱線、紫外線の吸収を
示す目安となる。ＲはＳｎＯ2／ＣｅＯ2を示す。ＬｎＲ
1は高圧水銀灯照射前後の１０００ｎｍに於ける吸光度
の増加を、ＬｎＲ2は３７０ｎｍに於ける吸光度の増加
を示す。Table 1 shows the glass compositions of Examples 1 to 5 according to the present invention and Comparative Examples 6 and 7, which are outside the scope of the present invention, the optical properties before and after irradiation with a mercury lamp, and the absorbance of the glass sample by solarization. The change is shown. Y A represents a visible light transmittance as measured by 2 ° field of view with the A light source. TG indicates the transmittance of solar radiation energy. λ d indicates the dominant wavelength when measured with a 2 ° field of view using a C light source. T 1000 and T 370 are each 1000n
m, a transmittance of 370 nm, and serves as a measure of absorption of heat rays and ultraviolet rays. R represents SnO 2 / CeO 2 . LnR
1 indicates an increase in absorbance at 1000 nm before and after irradiation with a high-pressure mercury lamp, and LnR 2 indicates an increase in absorbance at 370 nm.
【００３０】実施例１と比較例６を比べると、水銀灯照
射前は、比較例はＹA、ＴG、Ｔ1000が実施例より大き
く、熱線吸収能が実施例より劣ることが分かる。これに
反し紫外線吸収能の目安となるＴ370 は、実施例、比較
例ともほぼ同じであることから、比較例は酸化錫が入っ
ていないためにガラス中のＦｅ2+の量が不十分であるこ
とを示す。水銀灯照射後のＬｎＲ1、ＬｎＲ2は、比較例
６の方が実施例１よりも大きく、ソラリゼ−ションの大
きいことを示している。ソラリゼ−ションの結果、
ＹA、ＴGが低下するが、実施例１がＹA、ＴGとも０．５
％以下の低下であるのに対し、比較例６は酸化錫が入っ
ていないため１％以上の低下を示している。Comparing Example 1 with Comparative Example 6, it can be seen that before irradiation with a mercury lamp, the comparative example had larger Y A , T G , and T 1000 than the example, and was inferior to the example in heat ray absorbing ability. On the other hand, T 370, which is a measure of the ultraviolet absorbing ability, is almost the same in Examples and Comparative Examples. Therefore, Comparative Example does not contain tin oxide, so that the amount of Fe 2+ in the glass is insufficient. Indicates that there is. LnR 1 and LnR 2 after irradiation with a mercury lamp are larger in Comparative Example 6 than in Example 1, indicating that the solarization is larger. As a result of the solarization,
Y A, but T G is decreased, Example 1 Y A, with T G 0.5
%, While Comparative Example 6 shows a decrease of 1% or more because tin oxide was not contained.
【００３１】比較例７は実施例２に比較しＣｅＯ2 の含
有量が大きくＲ＝２．０であるために、水銀灯照射前は
ＹA、ＴG、Ｔ1000が実施例より大きい。Ｔ370 は比較例
７の方が実施例２より小さい。この事は比較例７は酸化
錫による還元の効果が小さく、Ｆｅ3+の量が大きいこと
を示す。水銀灯照射後は、ＬｎＲ1、ＬｎＲ2とも比較例
７の方が実施例２より大きく、ソラリゼ−ションの影響
が大きいことを示す。ソラリゼ−ションによるＹA、ＴG
の低下は、実施例が０．５％以下であるのに対し、比較
例はＳｎＯ2／ＣｅＯ2＜２．２であるため、酸化錫の効
果が小さく、ＹAが１％以上、ＴGは３％以上も低下して
いる。Comparative Example 7 has a higher CeO 2 content than Example 2 and R = 2.0, so that before irradiation with a mercury lamp, Y A , T G , and T 1000 are larger than those in Example. T370 is smaller in Comparative Example 7 than in Example 2. This indicates that Comparative Example 7 has a small effect of reduction by tin oxide and a large amount of Fe 3+ . After irradiation with a mercury lamp, both LnR 1 and LnR 2 are larger in Comparative Example 7 than in Example 2, indicating that the influence of solarization is greater. Sorarize - Deployment by Y A, T G
Reduction of, while examples is not more than 0.5%, for Comparative Examples are SnO 2 / CeO 2 <2.2, the effect of tin oxide is small, Y A is 1% or more, T G Has dropped by more than 3%.
【００３２】[0032]
【発明の効果】以上に述べたように、本発明に係わる熱
線及び紫外線吸収ガラスは、熱線及び紫外線の吸収が大
きく、しかもソラリゼ−ションによる可視光線透過率の
低下が小さく、建築用、車両用に特に好適なガラスであ
る。As described above, the heat ray and ultraviolet ray absorbing glass according to the present invention has a large absorption of heat ray and ultraviolet ray, and a small decrease in visible light transmittance due to solarization. It is a glass particularly suitable for
Claims (1)
％のＳｉＯ2、０〜５％のＡｌ2Ｏ3、０〜５％のＢ
2Ｏ3、１〜１０％のＭｇＯ、５〜１５％のＣａＯ、１０
〜１８％のＮａ2Ｏ、０〜５％のＫ2Ｏ、０．２〜２％の
Ｆｅ2Ｏ3 に換算した酸化鉄、０．２〜２％のＣｅＯ2
に換算した酸化セリウム、０．５〜６％のＳｎＯ2 に換
算した酸化錫から成り、ＳｎＯ2／ＣｅＯ2が２．２以上
であることを特徴とする熱線及び紫外線吸収ガラス。1. Essentially 60 to 80, expressed as% by weight.
% SiO 2 , 0-5% Al 2 O 3 , 0-5% B
2 O 3 , 1-10% MgO, 5-15% CaO, 10
18% of Na 2 O, 0 to 5% of K 2 O, iron oxide in terms of from 0.2 to 2% of Fe 2 O 3, 0.2~2% of CeO 2
A heat ray and ultraviolet absorbing glass comprising cerium oxide converted to SnO 2 and tin oxide converted to SnO 2 at 0.5 to 6%, and wherein SnO 2 / CeO 2 is 2.2 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03050663A JP3084769B2 (en) | 1991-02-22 | 1991-02-22 | Heat and UV absorbing glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03050663A JP3084769B2 (en) | 1991-02-22 | 1991-02-22 | Heat and UV absorbing glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04270138A JPH04270138A (en) | 1992-09-25 |
| JP3084769B2 true JP3084769B2 (en) | 2000-09-04 |
Family
ID=12865195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03050663A Expired - Fee Related JP3084769B2 (en) | 1991-02-22 | 1991-02-22 | Heat and UV absorbing glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3084769B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5593929A (en) * | 1990-07-30 | 1997-01-14 | Ppg Industries, Inc. | Ultraviolet absorbing green tinted glass |
| DE69600538T2 (en) * | 1995-06-02 | 1999-01-28 | Nippon Sheet Glass Co Ltd | Ultraviolet and infrared radiation absorbing glass |
| US5932502A (en) * | 1996-04-19 | 1999-08-03 | Guardian Industries Corp. | Low transmittance glass |
| US7977262B2 (en) | 2005-04-01 | 2011-07-12 | Panasonic Corporation | Glass composition for lamp, lamp, backlight unit and method for producing glass composition for lamp |
| CN101223115B (en) * | 2005-07-12 | 2012-02-08 | 独立行政法人产业技术综合研究所 | Glass composition for lamp, glass part for lamp, lamp and process for producing lamp or glass composition for lamp |
| FR2982256A1 (en) * | 2011-11-03 | 2013-05-10 | Saint Gobain | SUBSTRATE FOR PHOTOVOLTAIC CELL |
| KR102526728B1 (en) * | 2016-12-29 | 2023-04-27 | 코닝 인코포레이티드 | Solarization Resistant Rare Earth Doped Glasses |
| CN109485252B (en) * | 2018-06-19 | 2021-09-28 | 原思平 | Coloring additive for functional glass with high visible light transmittance and near infrared ray absorption, application and functional glass |
-
1991
- 1991-02-22 JP JP03050663A patent/JP3084769B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04270138A (en) | 1992-09-25 |
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| LAPS | Cancellation because of no payment of annual fees |