GB1511150A - Transparent glass microspheres and products made therefro - Google Patents

Transparent glass microspheres and products made therefro

Info

Publication number
GB1511150A
GB1511150A GB4863175A GB4863175A GB1511150A GB 1511150 A GB1511150 A GB 1511150A GB 4863175 A GB4863175 A GB 4863175A GB 4863175 A GB4863175 A GB 4863175A GB 1511150 A GB1511150 A GB 1511150A
Authority
GB
United Kingdom
Prior art keywords
microspheres
transparent glass
glass microspheres
therefro
glass
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
Application number
GB4863175A
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Priority to GB4863175A priority Critical patent/GB1511150A/en
Publication of GB1511150A publication Critical patent/GB1511150A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/12—Reflex reflectors
    • G02B5/126—Reflex reflectors including curved refracting surface
    • G02B5/128—Reflex reflectors including curved refracting surface transparent spheres being embedded in matrix
    • 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
    • C03C3/04—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
    • C03C3/00—Glass compositions
    • C03C3/12—Silica-free oxide glass compositions
    • C03C3/127—Silica-free oxide glass compositions containing TiO2 as glass former
    • 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
    • C03C3/16—Silica-free oxide glass compositions containing phosphorus

Abstract

1511150 Glass microspheres MINNESOTA MINING & MFG CO 26 Nov 1975 48631/75 Heading C1M Colorless transparent glass microspheres, of diameter less than 2 mm. and refractive index 1À85-2À0, consist of, in percent by weight:- where the substituent oxide is one or more of the oxides listed in Figure 2 (and in the amounts listed in Fig. 2), and where the glass composition lies within area ABCDEF of Figure 1. The microspheres may be formed by passing a stream of the molten glass into a flame at 1100-1450‹C or into a high velocity air jet. The microspheres may be carried on a support sheet to form retroreflective sheeting.
GB4863175A 1975-11-26 1975-11-26 Transparent glass microspheres and products made therefro Expired GB1511150A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4863175A GB1511150A (en) 1975-11-26 1975-11-26 Transparent glass microspheres and products made therefro

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4863175A GB1511150A (en) 1975-11-26 1975-11-26 Transparent glass microspheres and products made therefro

Publications (1)

Publication Number Publication Date
GB1511150A true GB1511150A (en) 1978-05-17

Family

ID=10449333

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4863175A Expired GB1511150A (en) 1975-11-26 1975-11-26 Transparent glass microspheres and products made therefro

Country Status (1)

Country Link
GB (1) GB1511150A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2371542A (en) * 2000-12-22 2002-07-31 British Nuclear Fuels Plc Immobilising waste metals in glass
FR3003247A1 (en) * 2013-03-14 2014-09-19 Colas Sa GLASS BALLS WITH SURFACE LAYER (S) FOR ROAD MARKING, ROAD MARKING AND METHOD FOR PRODUCING THE SAME
FR3003248A1 (en) * 2013-03-14 2014-09-19 Colas Sa GLASS BALLS WITH SURFACE LAYER (S) HAVING BACK-REFLECTION PROPERTIES, PROCESS FOR PRODUCING THE SAME

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2371542A (en) * 2000-12-22 2002-07-31 British Nuclear Fuels Plc Immobilising waste metals in glass
FR3003247A1 (en) * 2013-03-14 2014-09-19 Colas Sa GLASS BALLS WITH SURFACE LAYER (S) FOR ROAD MARKING, ROAD MARKING AND METHOD FOR PRODUCING THE SAME
FR3003248A1 (en) * 2013-03-14 2014-09-19 Colas Sa GLASS BALLS WITH SURFACE LAYER (S) HAVING BACK-REFLECTION PROPERTIES, PROCESS FOR PRODUCING THE SAME

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19951125