JPS553352A - High refractive index glass for glass bead - Google Patents

High refractive index glass for glass bead

Info

Publication number
JPS553352A
JPS553352A JP7588678A JP7588678A JPS553352A JP S553352 A JPS553352 A JP S553352A JP 7588678 A JP7588678 A JP 7588678A JP 7588678 A JP7588678 A JP 7588678A JP S553352 A JPS553352 A JP S553352A
Authority
JP
Japan
Prior art keywords
glass
refractive index
high refractive
zro
sio
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.)
Granted
Application number
JP7588678A
Other languages
Japanese (ja)
Other versions
JPS6114095B2 (en
Inventor
Isamu Nakagawa
Yukinobu Imamura
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.)
Nippon Electric Glass Co Ltd
Original Assignee
Nippon Electric Glass Co Ltd
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 Nippon Electric Glass Co Ltd filed Critical Nippon Electric Glass Co Ltd
Priority to JP7588678A priority Critical patent/JPS553352A/en
Publication of JPS553352A publication Critical patent/JPS553352A/en
Publication of JPS6114095B2 publication Critical patent/JPS6114095B2/ja
Granted 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
    • C03C12/00—Powdered glass; Bead compositions
    • C03C12/02—Reflective beads

Abstract

PURPOSE: To provide the title glass contg. TiO2, BaO, ZnO, ZrO2, SiO2, CaO, SrO, etc. in a specified ratio, having such a high refractive index as above 2.1 and strong reflective action, and fit for long-term use as a traffic-control sign without being blackened by SO2 esp. in exhaust gas.
CONSTITUTION: The high refractive index glass for glass heads consists of, by wt., TiO2; 42W50%, BaO; 20W40%, ZnO; 2.5W30%, ZrO2; 2.5W25%, SiO2; 0.2W 1.5%, CaO≤2%, SrO≤6%, Al2O3≤2%, Na2O≤1.5%, K2O≤1.5% and Li2O ≤1.5% and contains no B2O3. The addn. of a little SiO2 stabilizes the glass structure to enable the ZrO2 content to be raised. The heterogeneity of glass in a melt- forming process is thus improved, and glass beads of high transparency are obtd.
COPYRIGHT: (C)1980,JPO&Japio
JP7588678A 1978-06-22 1978-06-22 High refractive index glass for glass bead Granted JPS553352A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7588678A JPS553352A (en) 1978-06-22 1978-06-22 High refractive index glass for glass bead

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7588678A JPS553352A (en) 1978-06-22 1978-06-22 High refractive index glass for glass bead

Publications (2)

Publication Number Publication Date
JPS553352A true JPS553352A (en) 1980-01-11
JPS6114095B2 JPS6114095B2 (en) 1986-04-17

Family

ID=13589216

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7588678A Granted JPS553352A (en) 1978-06-22 1978-06-22 High refractive index glass for glass bead

Country Status (1)

Country Link
JP (1) JPS553352A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003505328A (en) * 1999-07-27 2003-02-12 スリーエム イノベイティブ プロパティズ カンパニー Transparent microsphere
WO2020136537A1 (en) * 2018-12-26 2020-07-02 3M Innovative Properties Company Transparent solid spheres and method for producing same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003505328A (en) * 1999-07-27 2003-02-12 スリーエム イノベイティブ プロパティズ カンパニー Transparent microsphere
JP2011237825A (en) * 1999-07-27 2011-11-24 3M Innovative Properties Co Transparent microsphere
JP4868673B2 (en) * 1999-07-27 2012-02-01 スリーエム イノベイティブ プロパティズ カンパニー Transparent microsphere
JP2013032279A (en) * 1999-07-27 2013-02-14 Three M Innovative Properties Co Transparent microsphere
WO2020136537A1 (en) * 2018-12-26 2020-07-02 3M Innovative Properties Company Transparent solid spheres and method for producing same

Also Published As

Publication number Publication date
JPS6114095B2 (en) 1986-04-17

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