IT202000023692A1 - TRANSPARENT GLASS WITH PHOTOCHROMIC EFFECT - Google Patents

TRANSPARENT GLASS WITH PHOTOCHROMIC EFFECT Download PDF

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Publication number
IT202000023692A1
IT202000023692A1 IT102020000023692A IT202000023692A IT202000023692A1 IT 202000023692 A1 IT202000023692 A1 IT 202000023692A1 IT 102020000023692 A IT102020000023692 A IT 102020000023692A IT 202000023692 A IT202000023692 A IT 202000023692A IT 202000023692 A1 IT202000023692 A1 IT 202000023692A1
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IT
Italy
Prior art keywords
glass according
glass
silver
battery
photochromic
Prior art date
Application number
IT102020000023692A
Other languages
Italian (it)
Inventor
Ayoube Jarmouny
Original Assignee
Ayoube Jarmouny
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 Ayoube Jarmouny filed Critical Ayoube Jarmouny
Priority to IT102020000023692A priority Critical patent/IT202000023692A1/en
Publication of IT202000023692A1 publication Critical patent/IT202000023692A1/en

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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
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/001—General methods for coating; Devices therefor
    • C03C17/002—General methods for coating; Devices therefor for flat glass, e.g. float glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • 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
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • 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
    • C03C2217/00—Coatings on glass
    • C03C2217/20—Materials for coating a single layer on glass
    • C03C2217/28—Other inorganic materials
    • C03C2217/284—Halides
    • 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
    • C03C2217/00—Coatings on glass
    • C03C2217/20—Materials for coating a single layer on glass
    • C03C2217/28—Other inorganic materials
    • C03C2217/284—Halides
    • C03C2217/286—Chlorides
    • 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
    • C03C2217/00—Coatings on glass
    • C03C2217/20—Materials for coating a single layer on glass
    • C03C2217/29—Mixtures
    • 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
    • C03C2217/00—Coatings on glass
    • C03C2217/70—Properties of coatings
    • 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
    • C03C2217/00—Coatings on glass
    • C03C2217/70—Properties of coatings
    • C03C2217/74—UV-absorbing coatings

Description

DESCRIZIONE DESCRIPTION

Di domanda di brevetto per Invenzione Industriale avente per titolo: Of patent application for Industrial Invention entitled:

?VETRO TRASPARENTE AD EFFETTO FOTOCROMATICO? ?TRANSPARENT GLASS WITH PHOTOCHROMIC EFFECT?

DESCRIZIONE DESCRIPTION

SCOPO PURPOSE

La presente invenzione si riferisce ad un vetro trasparente ad effetto fotocromatico, dove con il termine ?effetto fotocromatico? si intende la variazione di oscurazione del vetro (l'esempio pi? comune ? quello delle lenti degli occhiali); normalmente, il colore varia a seconda dell'incidenza della luce sulla lente, pi? intensa ? la luce maggiore sar? l'oscurazione del vetro. Il motivo risiede nel cambiamento della configurazione elettronica esterna, in seguito a un processo fotochimico, della sostanza posta all'interno del vetro. The present invention refers to a transparent glass with a photochromic effect, where the term ?photochromic effect? refers to the variation in the darkening of the glass (the most common example is that of eyeglass lenses); normally, the color varies depending on the incidence of light on the lens, pi? intense ? the greater light will be the darkening of the glass. The reason lies in the change of the external electronic configuration, following a photochemical process, of the substance placed inside the glass.

DESCRIZIONE DESCRIPTION

A differenza dei sistemi noti e classici, l?oscuramento del vetro fotocromatico della presente invenzione pu? avvenire manualmente. Unlike the known and classic systems, the dimming of the photochromic glass of the present invention can be done manually.

Il vetro fotocromatico costruito nel seguente modo sar? in grado di cambiare/modificare il suo grado di oscuramento (trasparente-scuro-opaco) a seconda dell?energia elettrica ceduta da una batteria ad esso collegata. The photochromic glass built in the following way will be? able to change/modify its degree of darkening (transparent-dark-opaque) according to the electrical energy released by a battery connected to it.

Infatti, alla fine del trattamento, si ottiene un vetro fotocromatico tale per cui la reazione chimica che ne permette l?oscurazione e lo schiarimento viene regolato elettricamente attraverso una batteria ad esso collegabile, e non pi? attraverso la luce solare e alle radiazioni UV. In fact, at the end of the treatment, a photochromic glass is obtained such that the chemical reaction that allows darkening and lightening is electrically regulated through a battery that can be connected to it, and no longer? through sunlight and UV radiation.

In maggior dettaglio, alla miscela base del vetro fotocromatico sono aggiunti due sali: In greater detail, two salts are added to the basic mixture of the photochromic glass:

- Un primo sale a base di argento (nel caso specifico alogenuri) che funge da componente che permette l?oscurazione, - A silver-based first salt (in this specific case halides) which acts as a component that allows darkening,

- Un secondo sale a base di rame che serve a riportare nelle condizioni iniziali l?argento metallico formato a seguito di stimolazione in forma ionica. - A second copper-based salt which serves to restore the initial conditions of the metallic silver formed following stimulation in ionic form.

Per ci? che attiene alle reazioni vetro-batteria ad essa collegata, le reazioni principali sono le seguenti tre: For what? which pertains to the glass-battery reactions connected to it, the main reactions are the following three:

1. AgCl ? Ag Cl 1. AgCl ? AgCl

2. Cu<+ >+ Cl ? Cu<+2 >+ Cl- 2. Cu<+ >+ Cl ? Cu<+2 >+ Cl-

3. Cu<2+ >+ Ag ? Cu<+ >+ Ag<+>3. Cu<2+ >+ Ag ? Cu<+ >+ Ag<+>

La prima reazione (AgCl ? Ag Cl) ? quella che avviene quando il cloruro di argento viene stimolato dalla batteria una volta che ? collegata al vetro oggetto della invenzione; in altri termini, con la prima reazione si ha una ossidoriduzione in cui viene liberato argento metallico nel vetro che causa una diminuzione di trasmittanza (luce passante) nel vetro. The first reaction (AgCl ? AgCl) ? what happens when the silver chloride is stimulated by the battery once it ? connected to the glass object of the invention; in other words, with the first reaction there is an oxidation-reduction in which metallic silver is released in the glass which causes a decrease in transmittance (passing light) in the glass.

La seconda reazione (Cu<+ >+ Cl ? Cu<+2 >+ Cl-) non permette al cloro di riaggregarsi sotto forma di cloro gassoso e quindi risultare sempre in forma ionica, per riformare il sale quando l?argento non pi? esposto a una fonte di energia torna in forma ionica. The second reaction (Cu<+ >+ Cl ? Cu<+2 >+ Cl-) does not allow the chlorine to re-aggregate in the form of gaseous chlorine and therefore always result in the ionic form, to reform the salt when the silver is no longer? exposed to an energy source it reverts to ionic form.

La terza reazione (Cu<2+ >+ Ag ? Cu<+ >+ Ag<+>) va a riformare gli ioni di partenza cio? argento allo stato di ossidazione 1 e rame allo stato di ossidazione 1. The third reaction (Cu<2+ >+ Ag ? Cu<+ >+ Ag<+>) reforms the starting ions, that is? silver in oxidation state 1 and copper in oxidation state 1.

Tutto quanto sopra descritto avviene nel vetro oggetto della invenzione tramite l'aggiunta di sali di argento e rame. All of the above described takes place in the glass object of the invention through the addition of silver and copper salts.

Secondo un ulteriore aspetto vantaggioso dell?invenzione, il vetro fotocromatico pu? comprendere almeno uno strato di protezione dai raggi UV. According to a further advantageous aspect of the invention, the photochromic glass can include at least one layer of UV protection.

Preferibilmente detto strato di protezione dai raggi UV ? in materiale plastico. Preferably said UV protection layer ? in plastic material.

Grazie a detto strato di protezione, si evitano oscurazioni indesiderate. Thanks to said layer of protection, unwanted darkenings are avoided.

Secondo un ulteriore aspetto vantaggioso dell?invenzione, il vetro fotocromatico pu? comprendere ulteriormente almeno uno strato a base di litio con un catodo e un anodo, al fine di trasmettere la corrente con un consumo di circa 6,0 Wfm<2 >(per la massima oscurazione) da una batteria collegata ai due elettrodi e permettere la migrazione dei cationi e degli anioni. According to a further advantageous aspect of the invention, the photochromic glass can further comprise at least one lithium-based layer with a cathode and an anode, in order to transmit the current with a consumption of about 6.0 Wfm<2 >(for maximum darkening) from a battery connected to the two electrodes and allow the migration of cations and anions.

Descrizione di un esempio di realizzazione Description of an example of implementation

Vengono ora descritte le caratteristiche funzionali e strutturali di una forma di realizzazione preferita, secondo l?invenzione, dove la figura 1 , in accordo con tutti gli aspetti sopra indicati, illustra un vetro 1 a pi? strati, preferibilmente con uno spessore massimo di 4,0 cm, in cui all?esterno ci sono due lastre di vetro temprato, indicate con il riferimento 2, e in ordine dalla parte pi? interna un strato fotocromatico 3 a base di sali di argento e rame, seguita verso l?esterno da uno strato elettro-trasmittente 4 per permettere il passaggio di corrente su tutto il vetro, seguito poi da uno strato di protezione ai raggi UV 5 in materiale plastico. The functional and structural characteristics of a preferred embodiment, according to the invention, are now described, wherein figure 1 , in accordance with all the aspects indicated above, illustrates a glass 1 with pi? layers, preferably with a maximum thickness of 4.0 cm, in which on the outside there are two plates of tempered glass, indicated with the reference 2, and in order from the most? inside a photochromic layer 3 based on silver and copper salts, followed towards the outside by an electro-transmitting layer 4 to allow the passage of current over the whole glass, followed by a layer of protection against UV rays 5 in material plastic.

Si precisa che la batteria ? configurata per far iniziare, in condizioni di esercizio, la reazione in cui l?argento passa da stato di ossidazione 1 a stato di ossidazione 0; la batteria rilasciando corrente continua non permette nemmeno l?inizio della reazione di ossidoriduzione del rame, risultando cos? in un?oscurazione continua per quanto desiderato. It is specified that the battery? configured to initiate, under operating conditions, the reaction in which the silver passes from oxidation state 1 to oxidation state 0; the battery releasing direct current does not even allow the?beginning of the redox reaction of the copper, thus resulting? in a continuous darkening as desired.

Claims (12)

RIVENDICAZIONI 1. Vetro trasparente fotocromatico, caratterizzato dal fatto di comprendere sali per conferire un comportamento fotocromatico, dove detti sali sono:1. Photochromic transparent glass, characterized in that it includes salts to impart a photochromic behavior, where said salts are: a. un primo sale a base di argento che funge da componente che permette l'oscurazione edto. a silver-based first salt that acts as a component that allows darkening ed b. un secondo sale a base di rame atto a riportare nelle condizioni iniziali l'argento metallico formato a seguito di stimolazione in forma ionica.b. a second copper-based salt suitable for returning the metallic silver formed following stimulation in ionic form to its initial conditions. 2. Vetro secondo la rivendicazione 1, in cui il primo sale ? un alogenuro d?argento,2. Glass according to claim 1, wherein the first salt is? a silver halide, 3. Vetro secondo la rivendicazione 1 , in cui il primo sale ? un cloruro d?argento.3. Glass according to claim 1, wherein the first salt? a silver chloride. 4. Vetro secondo la rivendicazione 1, in cui il primo sale ? un alogenuro e cloruro d?argento.4. Glass according to claim 1, wherein the first salt is? a halide and silver chloride. 5. Vetro secondo la rivendicazione 1, caratterizzato dal fatto di comprendere ulteriormente almeno uno strato di protezione dai raggi UV.5. Glass according to claim 1, characterized in that it further comprises at least one layer of protection from UV rays. 6. Vetro secondo la rivendicazione 5, caratterizzato dal fatto che detto strato di protezione ? in materiale plastico.6. Glass according to claim 5, characterized in that said protective layer is in plastic material. 7. Vetro secondo la rivendicazione 1 e 5, caratterizzato dal fatto di comprendere ulteriormente almeno uno strato a base di litio con un catodo e un anodo.7. Glass according to claims 1 and 5, characterized in that it further comprises at least one lithium-based layer with a cathode and an anode. 8. Vetro secondo le rivendicazioni precedenti caratterizzato dal fatto di comprendere pi? strati ed in cui all?esterno comprende due lastre di vetro temprato, mentre dalla parte pi? interna comprende uno strato fotocromatico a base di sali di argento e rame, seguita verso l?esterno da uno strato elettro-trasmittente per permettere il passaggio di corrente su tutto il vetro, seguito poi da uno strato di protezione ai raggi UV in materiale plastico.8. Glass according to the preceding claims characterized in that it comprises several? layers and in which the outside includes two plates of tempered glass, while the most? inside it includes a photochromic layer based on silver and copper salts, followed towards the outside by an electro-transmitting layer to allow the passage of current throughout the glass, followed by a layer of protection against UV rays in plastic material. 9. Vetro secondo la rivendicazione 8 caratterizzato dal fatto di avere spessore massimo di 4,0 cm.9. Glass according to claim 8 characterized in that it has a maximum thickness of 4.0 cm. 10. Sistema comprendente almeno un vetro fotocromatico secondo una o pi? delle rivendicazioni precedenti e almeno una batteria ad esso collegabile; detta batteria essendo atta a far iniziare, in condizioni di esercizio, la reazione in cui l?argento passa da stato di ossidazione 1 a stato di ossidazione 0; la batteria rilasciando corrente continua non permette nemmeno l?inizio della reazione di ossidoriduzione del rame, risultando cos? in un?oscurazione continua per quanto desiderato.10. System comprising at least one photochromic glass according to one or more? of the preceding claims and at least one battery connectable thereto; said battery being able to initiate, under operating conditions, the reaction in which the silver passes from oxidation state 1 to oxidation state 0; the battery releasing direct current does not even allow the?beginning of the redox reaction of the copper, thus resulting? in a continuous darkening as desired. 11. Sistema secondo la rivendicazione 10 in cui la trasmissione della corrente ? a base di litio.11. System according to claim 10 wherein the transmission of the current is lithium based. 12. Metodo per variare la fotocromaticit? del vetro di cui alla rivendicazione 1 in cui si prevede quindi di collegare al vetro fotocromatico cos? realizzato almeno una batteria; detta batteria essendo atta a far iniziare, in condizioni di esercizio, la reazione in cui l?argento passa da stato di ossidazione 1 a stato di ossidazione 0; la batteria rilasciando corrente continua non permette nemmeno l?inizio della reazione di ossidoriduzione del rame, risultando cos? in un?oscurazione continua per quanto desiderato. 12. Method to vary the photochromaticity? of the glass according to claim 1 in which it is foreseen therefore to connect to the photochromic glass so? made at least one battery; said battery being able to initiate, under operating conditions, the reaction in which the silver passes from oxidation state 1 to oxidation state 0; the battery releasing direct current does not even allow the?beginning of the oxidation-reduction reaction of the copper, thus resulting? in a continuous darkening as desired.
IT102020000023692A 2020-10-20 2020-10-20 TRANSPARENT GLASS WITH PHOTOCHROMIC EFFECT IT202000023692A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5880872A (en) * 1996-09-20 1999-03-09 Sony Corporation Optical device and electrolytic solution
WO2017181621A1 (en) * 2016-04-18 2017-10-26 京东方科技集团股份有限公司 Display device capable of switching between display state and mirror surface state

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5880872A (en) * 1996-09-20 1999-03-09 Sony Corporation Optical device and electrolytic solution
WO2017181621A1 (en) * 2016-04-18 2017-10-26 京东方科技集团股份有限公司 Display device capable of switching between display state and mirror surface state

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HOFFMANN H J ED - HEMMATI HAMID *1954-* [HERAUSGEBERIN] IDENTITY ET AL: "Photochromic glass", PROCEEDINGS OF SPIE; [PROCEEDINGS OF SPIE ISSN 0277-786X VOLUME 10524], SPIE, US, vol. 10304, 28 March 1990 (1990-03-28), pages 1030405 - 1030405, XP060094552, ISBN: 978-1-5106-1533-5, DOI: 10.1117/12.2283608 *

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