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DE1771079B1 - COUNTER-REDUCTION AND STABILIZATION OF STABLE GLASSES FOR REFLEX PEARLS WITH CRUCIAL VALUES AT LEAST EQUAL LARGE OR EQUAL 2.2 - Google Patents

COUNTER-REDUCTION AND STABILIZATION OF STABLE GLASSES FOR REFLEX PEARLS WITH CRUCIAL VALUES AT LEAST EQUAL LARGE OR EQUAL 2.2

Info

Publication number
DE1771079B1
DE1771079B1 DE19681771079 DE1771079A DE1771079B1 DE 1771079 B1 DE1771079 B1 DE 1771079B1 DE 19681771079 DE19681771079 DE 19681771079 DE 1771079 A DE1771079 A DE 1771079A DE 1771079 B1 DE1771079 B1 DE 1771079B1
Authority
DE
Germany
Prior art keywords
weight
equal
percent
zro
obis
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Withdrawn
Application number
DE19681771079
Other languages
German (de)
Inventor
Marga Physiko-Chem Faulstich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schott AG
Original Assignee
Jenaer Glaswerk Schott and Gen
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jenaer Glaswerk Schott and Gen filed Critical Jenaer Glaswerk Schott and Gen
Priority to DE19681771079 priority Critical patent/DE1771079B1/en
Priority to AT92669A priority patent/AT288621B/en
Priority to GB1233512D priority patent/GB1233512A/en
Priority to NL6904695A priority patent/NL6904695A/xx
Priority to FR6909183A priority patent/FR2005166A1/fr
Publication of DE1771079B1 publication Critical patent/DE1771079B1/en
Withdrawn legal-status Critical Current

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
    • C03C3/062—Glass compositions containing silica with less than 40% silica by weight
    • 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
    • C03C12/00—Powdered glass; Bead compositions
    • C03C12/02—Reflective beads
    • 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
    • C03C3/12—Silica-free oxide glass compositions
    • C03C3/122—Silica-free oxide glass compositions containing oxides of As, Sb, Bi, Mo, W, V, Te as glass formers
    • 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
    • C03C3/12—Silica-free oxide glass compositions
    • C03C3/127—Silica-free oxide glass compositions containing TiO2 as glass former

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Description

1 21 2

Die Erfindung bezieht sich auf Gläser zur Her- Der Einsatz von La2O3 und Ta2O5 bzw. Nb2O5 The invention relates to glasses for the manufacture of La 2 O 3 and Ta 2 O 5 or Nb 2 O 5

stellung von hochbrechenden Reflexperlen, deren wird wegen hoher Rohstoffkosten zweckmäßig unterposition of high-refractive reflective pearls, which is expedient because of high raw material costs

Brechwerte nd > 2,2 sind. 5 Gewichtsprozent gehalten; man kann jedoch bisRefractive indices n d > 2.2. 5 percent by weight held; but you can go up

Bekannte Reflexperlen dieser Lichtbrechung ent- zu 10 Gewichtsprozent einführen, halten PbO, CdO, Bi2O3, Sb2O3, S"""-Komponenten, 5 Ein ThO2-Einsatz sollte wegen der radioaktiven die sehr leicht zur Reduktion neigen und dadurch Strahlungseigenschaften vermieden werden. WO3 wird die Eigenfarbe der Gläser von gelblich zu Braun vorzugsweise nur bis 5 Gewichtsprozent eingeführt, verstärken. Die bisher auf der Basis Erdalkali—Titan- um eine Intensivierung der gelblichen Eigenfarbe borosilikat hergestellten Perlengläser erreichen nicht der hochbrechenden Perlen zu vermeiden, die gewünschte Brechung > 2,2, ohne daß sie Zu- io ZnO und/oder Al2O3 können zur Kristallisationssätze von PbO, Sb2O3, Bi2O3, CdO enthalten und der Stabilisierung in kleinen Mengen zugesetzt werden, TiO2-Gehalt mehr als 55 Gewichtsprozent beträgt. wobei der Gehalt an ZnO unter 3%, der an Al2O3 Introduce known reflective beads of this refraction of light up to 10 percent by weight, keep PbO, CdO, Bi 2 O 3 , Sb 2 O 3 , S "" components, 5 A ThO 2 use should tend to reduce very easily and because of the radioactive ones This avoids radiation properties. WO 3 introduces the inherent color of the glasses from yellowish to brown, preferably only up to 5 percent by weight. The pearl glasses produced so far on the basis of alkaline earth-titanium to intensify the yellowish inherent color of borosilicate do not avoid the high refractive index pearls The desired refraction> 2.2, without adding ZnO and / or Al 2 O 3, can be used for crystallization sets of PbO, Sb 2 O 3 , Bi 2 O 3 , CdO and added in small amounts for stabilization, TiO 2 content is more than 55 percent by weight, the ZnO content being below 3% and that of Al 2 O 3

Die erfindungsgemäßen Gläser sind durch folgende unter 1% liegen soll.The glasses according to the invention are said to be below 1% by the following.

Merkmale gekennzeichnet: Sie sind Die erfindungsgemäßen Gläser bestehen demnachFeatures marked: They are The glasses according to the invention therefore exist

a) PbO-, CdO-, Sb2O3-, Bi2O3-, S""-frei. I5 aUS: Gewichtsprozenta) PbO-, CdO-, Sb 2 O 3 -, Bi 2 O 3 -, S "" - free. I5 aUS: weight percent

b) Der Titanoxidgehalt liegt bei höchstens 54 Ge- d„q ^O bis 37 wichtsprozent. Tio 45 bis 54b) The titanium oxide content is at most 54 % by weight to 37% by weight. Tio 45 to 54

c) Der Gehalt an BaO beträgt 30 bis 37 Gewichts- , a η ι h = ς c) The BaO content is 30 to 37% by weight, a η ι h = ς

JLd2^y3 . 1 Dia JJLd 2 ^ y 3 . 1 slide J

prozent. 7rC. Ί V110 Q percent. 7rC . Ί V 110 Q

,- £.. r· ι ..η ,-ti.· τ-. ι 20 ZJTU? L DlS y , - £ .. r · ι ..η, -ti. Τ-. ι 20 ZJTU? L DlS y

d) Die erfindungsgemäßen Glaser mit Brecnungs- WO O bis 10 bzwd) The glasses according to the invention with Brecnungs- WO 0 to 10 or

indizesnd^ 2,2 besitzen die notwendige Ober- Ta 6 Ί indices n d ^ 2.2 have the necessary upper Ta 6 Ί

fiächenspannung, geringe Wärmeleitfähigkeit und ^ q > O bis 5surface tension, low thermal conductivity and ^ q > 0 to 5

eine Kristallisationsstabilität, die es ermöglichen, y q 5 ' O bis 3a crystallization stability that makes it possible to obtain yq 5 ' O to 3

daß man Perlen nach an sich bekannter Methode AlO O bis 1that one pearls according to a method known per se AlO O to 1

direkt aus der Schmelze herstellen kann. r.-;s 3 Λ ι· 0 Ί can be produced directly from the melt. r .-; s 3 Λ ι · 0 Ί

\jWj2 U DlS Z, / \ jWj2 U DlS Z, /

Diese Kristallisationsstabilität wird erreicht durch B2O3 O bis 2,7This crystallization stability is achieved with B 2 O 3 O up to 2.7

Einsatz von 3,5 bis 14 Gewichtsprozent GeO2 O bis 1,5Use of 3.5 to 14 percent by weight of GeO 2 O up to 1.5

La2O3 — ZrO2 — WO3 — Ta2O5 bzw.La 2 O 3 - ZrO 2 - WO 3 - Ta 2 O 5 or

Nb2O5-ThO2 O bis 2,7% betragen soll.2 Nb 2 O 5 -ThO 2 O should be up to 2.7%. 2

in ein Bariumtitanborosilikatglas, dessen TiO2-Ge- Die folgende Tabelle zeigt Beispiele erfindungs-in a barium titanium borosilicate glass, whose TiO 2 -Ge- The following table shows examples of the invention

halte 45 bis 54 Gewichtsprozent betragen. gemäßer Zusammensetzungen in Gewichtsprozent:hold 45 to 54 percent by weight. according to compositions in percent by weight:

OxideOxides

N 3483N 3483 N 3474N 3474 N 3477N 3477 N 3429N 3429 N 3415N 3415 N 3459N 3459 N 6606N 6606 N 6607N 6607 N 6608N 6608 N 6920N 6920 ii 33 44th 55 66th 77th 88th 99 1010 34,534.5 34,934.9 37,037.0 35,035.0 36,636.6 31,031.0 36,436.4 36,736.7 36,036.0 36,636.6 52,552.5 52,552.5 54,054.0 50,050.0 50,850.8 54,054.0 51,551.5 45,245.2 54,054.0 51,851.8 2,02.0 2,02.0 1,51.5 5,05.0 2,02.0 3,03.0 1,01.0 5,05.0 1,91.9 1,01.0 7,57.5 7,67.6 6,56.5 7,47.4 7,07.0 7,57.5 7,07.0 5,05.0 2,02.0 9,09.0 0,20.2 0,20.2 0,50.5 0,50.5 0,50.5 1,01.0 0,50.5 0,50.5 0,50.5 —- —- —- —- —- —- 0,150.15 0,50.5 2,52.5 —- —- —- —- —- —- —- 0,150.15 —- 2,52.5 4,04.0 1,01.0 2,02.0 2,02.0 0,50.5 —- —- 1,01.0 —- —- —- —- —- 0,50.5 1,21.2 1,61.6 1,01.0 1,61.6 1,61.6 0,60.6 —- —- —- —- —- 0,50.5 —- —- —- —- —- —- —- 2,02.0 1,01.0 0,50.5 1,01.0 1,01.0 1,01.0 0,60.6 0,10.1 0,10.1 0,50.5 0,10.1 —- 0,20.2 —- —- —- —- 0,20.2 0,20.2 0,30.3 —- 0,50.5 —- —- —- —- —-

BaO..BaO ..

TiO2 .TiO 2 .

La2O3 ZrO2 .La 2 O 3 ZrO 2 .

WO3 .WHERE 3 .

Ta2O5 Nb2O5 ZnO .Ta 2 O 5 Nb 2 O 5 ZnO.

PbO .PbO.

SiO2..SiO 2 ..

GeO2.GeO 2 .

B2O3.B 2 O 3 .

Al2O3 As2O3 Al 2 O 3 As 2 O 3

Claims (6)

Patentansprüche:Patent claims: 1. Gegen Reduktion und Verfärbung stabile Gläser für Reflexperlen mit Brechwerten nd ^ 2,2, 6o dadurch gekennzeichnet, daß sie bestehen aus1. Glasses stable against reduction and discoloration for reflective beads with refractive indices n d ^ 2.2, 6o, characterized in that they consist of GewichtsprozentWeight percent BaO 30bis37BaO 30 to 37 TiO2 45 bis 54 65TiO 2 45 to 54 65 ZrO2 2 bis 9ZrO 2 2 to 9 La2O3 1 bis 5La 2 O 3 1 to 5 WO3 0bis 10WO 3 0 to 10 GewichtsprozentWeight percent obis 5obis 5 ZnO Obis 3,0ZnO Obis 3.0 SiO2 Obis 2,7SiO 2 Obis 2.7 B2O3 Obis 2,7B 2 O 3 Obis 2.7 GeO2 Obis 1,5GeO 2 Obis 1.5 Al2O3 Obis 1,0Al 2 O 3 Obis 1.0 wobei die Summe SiO2 + B2O3 + Al2O3 den Wert 2,7 nicht überschreitet.where the sum of SiO 2 + B 2 O 3 + Al 2 O 3 does not exceed 2.7. 2. Gläser nach Anspruch 1, dadurch gekennzeichnet, daß zur Kristallisationsstabilisierung der Gehalt an La2O3 + ZrO2 3 bis 12 Gewichtsprozent beträgt, wobei ein ZrO2-Gehalt von 9 Gewichtsprozent nicht überschritten wird.2. Glasses according to claim 1, characterized in that, for crystallization stabilization, the La 2 O 3 + ZrO 2 content is 3 to 12 percent by weight, a ZrO 2 content of 9 percent by weight not being exceeded. 3. Gläser nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß der WO3-Gehalt 5 Gewichtsprozent nicht übersteigt, um die gelbliche Eigenfarbe der hochbrechenden Gläser nicht zu verstärken. 3. Glasses according to claims 1 and 2, characterized in that the WO 3 content does not exceed 5 percent by weight in order not to reinforce the yellowish intrinsic color of the high-index glasses. 4. Glas nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß es besteht aus4. Glass according to claims 1 to 3, characterized in that it consists of BaO .
TiO2 .
ZrO2.
La2O3
Al2O3
WO3 .,
ZnO .BaO.
TiO 2 .
ZrO 2 .
La 2 O 3
Al 2 O 3
WHERE 3. ,
ZnO. GewichtsprozentWeight percent .... 34,5.... 34.5 .... 52,5.... 52.5 5. Glas nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß es besteht aus5. Glass according to claims 1 to 3, characterized in that it consists of GewichtsprozentWeight percent B2O3 2,0B 2 O 3 2.0 BaO 35,0BaO 35.0 TiO2 50,0TiO 2 50.0 ZrO2 7,4ZrO 2 7.4 La2O3 5,0La 2 O 3 5.0 WO3 0,5WO 3 0.5 Al2O3 0,1Al 2 O 3 0.1 As2O3 0,3As 2 O 3 0.3 6. Glas nach den Ansprüchen 1 bis 3, dadurch6. Glass according to claims 1 to 3, characterized gekennzeichnet, daß es besteht ausmarked that it consists of GewichtsprozentWeight percent SiO2 1,6SiO 2 1.6 B2O3 1,0B 2 O 3 1.0 BaO 36,6BaO 36.6 TiO2 50,8TiO 2 50.8 ZrO2 7,0ZrO 2 7.0 La2O3 2,0La 2 O 3 2.0 WO3 0,5WO 3 0.5 As2O3 0,5As 2 O 3 0.5
DE19681771079 1968-03-30 1968-03-30 COUNTER-REDUCTION AND STABILIZATION OF STABLE GLASSES FOR REFLEX PEARLS WITH CRUCIAL VALUES AT LEAST EQUAL LARGE OR EQUAL 2.2 Withdrawn DE1771079B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE19681771079 DE1771079B1 (en) 1968-03-30 1968-03-30 COUNTER-REDUCTION AND STABILIZATION OF STABLE GLASSES FOR REFLEX PEARLS WITH CRUCIAL VALUES AT LEAST EQUAL LARGE OR EQUAL 2.2
AT92669A AT288621B (en) 1968-03-30 1969-01-30 Glasses for reflective pearls
GB1233512D GB1233512A (en) 1968-03-30 1969-03-18
NL6904695A NL6904695A (en) 1968-03-30 1969-03-26
FR6909183A FR2005166A1 (en) 1968-03-30 1969-03-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681771079 DE1771079B1 (en) 1968-03-30 1968-03-30 COUNTER-REDUCTION AND STABILIZATION OF STABLE GLASSES FOR REFLEX PEARLS WITH CRUCIAL VALUES AT LEAST EQUAL LARGE OR EQUAL 2.2

Publications (1)

Publication Number Publication Date
DE1771079B1 true DE1771079B1 (en) 1971-12-30

Family

ID=5700748

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19681771079 Withdrawn DE1771079B1 (en) 1968-03-30 1968-03-30 COUNTER-REDUCTION AND STABILIZATION OF STABLE GLASSES FOR REFLEX PEARLS WITH CRUCIAL VALUES AT LEAST EQUAL LARGE OR EQUAL 2.2

Country Status (5)

Country Link
AT (1) AT288621B (en)
DE (1) DE1771079B1 (en)
FR (1) FR2005166A1 (en)
GB (1) GB1233512A (en)
NL (1) NL6904695A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4365144A4 (en) * 2021-06-29 2025-11-05 Nikon Corp Optical glass, optical element, optical system, glued lens, interchangeable lens for cameras, lens for microscopes and optical device

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5415919A (en) * 1977-06-07 1979-02-06 Fukuoka Tokushiyu Garasu Kk Glass having high refractive index
CA2455953A1 (en) 2001-08-02 2003-02-13 3M Innovative Properties Company Method of making articles from glass and glass ceramic articles so produced
US7513941B2 (en) 2005-11-14 2009-04-07 3M Innovative Properties Company Pavement marking, reflective elements, and methods of making micospheres
JP4953234B2 (en) 2006-09-14 2012-06-13 独立行政法人 宇宙航空研究開発機構 Titanium-based oxide glass and method for producing the same
EP2467341B1 (en) * 2009-08-21 2016-02-24 3M Innovative Properties Company Pavement markings, reflective elements, and methods of making microspheres
CN102574730A (en) * 2009-08-21 2012-07-11 3M创新有限公司 Pavement markings, reflective elements, and methods of making microspheres
JP2020105041A (en) * 2018-12-26 2020-07-09 スリーエム イノベイティブ プロパティズ カンパニー Transparent solid spheres and method for producing the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2980547A (en) * 1957-05-03 1961-04-18 Flex O Lite Mfg Corp High refractive index glass beads
GB1037247A (en) * 1963-08-22 1966-07-27 Cataphote Corp High titanate glasses
US3294559A (en) * 1963-04-22 1966-12-27 Cataphote Corp Yellow glass bead compositions
US3294558A (en) * 1963-04-22 1966-12-27 Cataphote Corp Colorless high index glass compositions
DE1496530A1 (en) * 1965-02-24 1969-04-10 Glaverbel Industrial product in the form of transparent elements made of glass with a high refractive index

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2980547A (en) * 1957-05-03 1961-04-18 Flex O Lite Mfg Corp High refractive index glass beads
US3294559A (en) * 1963-04-22 1966-12-27 Cataphote Corp Yellow glass bead compositions
US3294558A (en) * 1963-04-22 1966-12-27 Cataphote Corp Colorless high index glass compositions
GB1037247A (en) * 1963-08-22 1966-07-27 Cataphote Corp High titanate glasses
DE1496530A1 (en) * 1965-02-24 1969-04-10 Glaverbel Industrial product in the form of transparent elements made of glass with a high refractive index

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4365144A4 (en) * 2021-06-29 2025-11-05 Nikon Corp Optical glass, optical element, optical system, glued lens, interchangeable lens for cameras, lens for microscopes and optical device

Also Published As

Publication number Publication date
FR2005166A1 (en) 1969-12-05
AT288621B (en) 1971-03-10
NL6904695A (en) 1969-10-02
GB1233512A (en) 1971-05-26

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