DEL0019893MA - - Google Patents
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- Publication number
- DEL0019893MA DEL0019893MA DEL0019893MA DE L0019893M A DEL0019893M A DE L0019893MA DE L0019893M A DEL0019893M A DE L0019893MA
- Authority
- DE
- Germany
- Prior art keywords
- percent
- weight
- silica
- oxide
- anhydride
- 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.)
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 8
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N Boron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- ZNOKGRXACCSDPY-UHFFFAOYSA-N Tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 claims description 4
- 230000003287 optical Effects 0.000 claims description 4
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 4
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims description 3
- 229910001947 lithium oxide Inorganic materials 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 2
- 239000005331 crown glasses (windows) Substances 0.000 claims 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims 1
- 230000002547 anomalous Effects 0.000 claims 1
- GEIAQOFPUVMAGM-UHFFFAOYSA-N oxozirconium Chemical compound [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 description 5
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N Boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 210000003298 Dental Enamel Anatomy 0.000 description 1
- 229910018068 Li 2 O Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N Silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N al2o3 Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000288 alkali metal carbonate Inorganic materials 0.000 description 1
- 150000008041 alkali metal carbonates Chemical class 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Description
BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY
Tag der Anmeldung: 13. September 1954 Bekanntgemacht am 18. Oktober 1956Registration date: September 13, 1954. Advertised on October 18, 1956
DEUTSCHES PATENTAMTGERMAN PATENT OFFICE
PATENTANMELDUNGPATENT APPLICATION
KLASSE 32b GRUPPE 1 INTERNAT. KLASSE C 03c CLASS 32b GROUP 1 INTERNAT. CLASS C 03c
L 19893 IVc/32 bL 19893 IVc / 32 b
Gustav Weissenberg, Wetzlar, und Norbert Meinert, Asslar (Kr. Wetzlar)Gustav Weissenberg, Wetzlar, and Norbert Meinert, Asslar (Kr.Wetzlar)
sind als Erfinder genannt wordenhave been named as inventors
Ernst Leitz G.m.b.H., WetzlarErnst Leitz G.m.b.H., Wetzlar
Optisches GlasOptical glass
Zusatz zum .Patent 919 195Addition to patent 919 195
Gegenstand der Erfindung sind optische Krön- | glaser mit anomaler TeildispersionThe invention relates to optical crowns | glasses with abnormal partial dispersion
δ = δ =
HgEd
nach Patent 919 195.according to patent 919 195.
In dem Patent 919 195 sind Gläser beschrieben, die aus einem Gemenge von Borsäureanhydrid, Zirkonoxyd und mindestens einem Alkalioxyd erschmolzen sind, wobei das Alkalioxyd zweckmäßig als Alkalicarbonat dem Gemenge zugefügt ist.In the patent 919 195 glasses are described that melted from a mixture of boric anhydride, zirconium oxide and at least one alkali oxide are, wherein the alkali oxide is expediently added to the mixture as an alkali metal carbonate.
Ferner ist angegeben, daß diese Gläser darüber hinaus noch Anteile an Aluminiumoxyd, Kieselsäure u. dgl. aufweisen können, wie sie für die Stabilisierung solcher Gläser bekannt sind, d.h. Anteile in Höhe bis zu etwa 3 Gewichtsprozent.It is also stated that these glasses also contain aluminum oxide and silicic acid and the like, as they are known for the stabilization of such glasses, i.e. proportions of up to about 3 percent by weight.
Es hat sich nun gezeigt, daß besonders harte und witterungsbeständige Gläser, die im wesentlichen aus Borsäureanhydrid, Zirkonoxyd und Lithiumoxyd bestehen, erzielt werden, wenn Kieselsäure in einem Anteil von 2 bis 30 Gewichtsprozent dem Glas zugesetzt ist. Der Gesamtanteil an Borsäure und Kieselsäure soll 50 Gewichtsprozent nicht unterschreiten.It has now been shown that particularly hard and weather-resistant glasses, which essentially consist of Boric anhydride, zirconium oxide and lithium oxide are obtained when silica is used in one Proportion of 2 to 30 percent by weight of the glass is added. The total amount of boric acid and silica should not fall below 50 percent by weight.
609 658/182609 658/182
L 19893 IVc/32 bL 19893 IVc / 32 b
Im einzelnen werden die Gläser aus Gemengen erschmolzen, die aus 30 bis 70 Gewichtsprozent Borsäureanhydrid, 2 bis 30 Gewichtsprozent Kieselsäure, 10 bis 25 Gewichtsprozent Zirkonoxyd und über 10 Gewichtsprozent Lithiumoxyd bestehen; gegebenen-In detail, the glasses are melted from batches that consist of 30 to 70 percent by weight boric anhydride, 2 to 30 percent by weight silica, 10 to 25 percent by weight zirconium oxide and over 10 Weight percent consist of lithium oxide; given-
falls kann bis zu 10 Gewichtsprozent Wolframsäureanhydrid vorhanden sein.if up to 10 percent by weight of tungstic anhydride can be used to be available.
In nachstehender Tabelle werden Beispiele derartiger Schmelzen angeführt.Examples of such melts are given in the table below.
Tabelle (in Gewichtsprozent)Table (in percent by weight)
Die Schmelzen gemäß der vorstehenden Tabelle sind in Platintiegeln durchgeführt. Selbstverständlich können in diesen Gemengesätzen noch bis zu 5 Gewichtsprozent von stabilisierenden und/oder entfärbenden Substanzen zugesetzt werden.The melts according to the table above are carried out in platinum crucibles. Of course can add up to 5 percent by weight of stabilizing and / or decolorizing in these batches Substances are added.
Claims (3)
Family
ID=
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