CN1823021A

CN1823021A - Solar control glazing

Info

Publication number: CN1823021A
Application number: CN200480019897.7A
Authority: CN
Inventors: A·C·托尔; N·巴顿
Original assignee: PEILEKINTEN COMMON CO Ltd; Pilkington Automotive Ltd
Current assignee: Pilkington Group Ltd; Pilkington Automotive Ltd
Priority date: 2003-07-11
Filing date: 2004-07-09
Publication date: 2006-08-23
Anticipated expiration: 2024-07-09
Also published as: GB2403731A; GB0316248D0; CN1823021B

Abstract

A vehicle glazing is disclosed comprising a pane of tinted glass, tinted by at least 1.0 to 1.8 % wt. of total iron, having a low emissivity coating on its interior surface. The coating has an emissivity from 0.05 to 0.4 and may include a transparent conductive oxide (and optionally a dopant), or a metal layer and at least one dielectric layer. The glass is preferably toughened glass. Also disclosed is a laminated glazing comprising two plies of glass, laminated by a sheet of interlayer material therebetween, wherein at least one ply of glass or the sheet of interlayer material is body tinted, said glazing having a low emissivity coating on its interior surface. The inner ply may be clear glass or tinted glass. The interlayer material may be clear PVB or tinted PVB, and it may further be infra-red reflecting. Either of the glazings may be used as a roof or other vehicle glazing.

Description

Solar control glazing

The present invention relates to automobile-used window glass, particularly relate to through coating and painted sunlight and control automobile-used window glass, described window glass also can be attached to the multiple glazing (laminated glazing) that is used for vehicle equally.

On one surface, coating is arranged so that it is known providing the painted window glass of sunlight control characteristics to window glass, particularly this type of window glass of Application in Building.A kind of such window glass is open in EP 1004550 A1, is called to be applicable to the particularly unitary heat-reflecting glass of double pane of building window.With the main siliceous thin film coated glass baseplate of one deck at least.Therefore the heat-reflecting glass that generates has the low visible light reflectivity, and green, bronze colour or grey reflection tone are arranged.

US 6538192 B1 disclose be used for vehicle roof through the painted glazing unit that is coated with.It discloses multilayer roof hatch glass especially, described multilayer roof hatch glass comprises the exterior pane (usually total iron content less than 0.1 weight %) of one deck " ultrawhite transparent (extra clear) " glass, the middle layer that one deck is equipped with the photovoltaic cell arrays that only covers a part of described window glass, and the interior pane of one deck painted (applying with optional) glass.The exterior pane of ultrawhite transparent glass has maximum energy transmission, so that photocell is worked well, and interior sheet glass is colored and chooses wantonly with athermanous coating coating, window glass beta maximum energy transmission partly by not covered by photovoltaic cell arrays is reduced, thereby improve the comfort level of automotive occupant.On the interior pane surface of the colored glass of facing interlayer, apply described optional coating, so that it contacts with the middle layer.In this position, coating makes it not to be subjected to degrade and wear and tear less than contacting with window glass environment outward.

The disclosed multilayer roof hatch of US 6538192 B1 glass has special purposes, just by use and suitably install the energy burden that photocell reduces the vehicle energy in window glass.So its intended purposes of use multiple glazing is controlled the high-energy transmissivity (promptly greater than 80%) to exterior pane and is remedied the requirement of the painted interior pane of the rising of exterior pane energy transmission rate (with standard transparent glassy phase ratio).

Be desirable to provide a kind of so automobile-used window glass, described automobile-used window glass makes the particularly heat energy minimizing of energy with the form of incident solar radiation, otherwise described energy will be by described window glass transmission.

Be desirable to provide a kind of so automobile-used multiple glazing especially, described automobile-used multiple glazing makes the particularly heat energy minimizing of energy with the form of incident sunlight, otherwise described energy will be by described window glass transmission.

We find that so automobile-used window glass can obtain by such pane plate is provided, and described pane plate is painted and on a surface of window glass low-emissivity coating is arranged with iron at least.

According to a first aspect of the invention, provide the automobile-used window glass that comprises painted pane plate, the tinting material of described colored glass partly contains the total iron of 1.0-1.8% (by glass weight) (with Fe ₂O ₃Meter), the 100-270ppmw cobalt oxide is (with Co ₃O ₄Meter) with less than 20ppm (weight) selenium (in Se) with one deck low-emissivity coating is arranged on the internal surface of pane plate." internal surface " of so-called pane refers to that window glass is installed in the pane surface that forms the vehicle internal surface on the vehicle.

The total iron content of glass plays an important role aspect the level of the absorption projectile energy that reaches of decision window glass and window glass overall painted.Total iron content is 1.3-1.6 weight % more preferably.The color that window glass shows is preferably grey, blueness or green (though bronze colour is also estimated), further preferably dark (transmission of visible light that is window glass is 50% or lower).

Cobalt oxide descends the visible light transmittance of the glass that contains cobalt oxide, more preferably contains the 150-230ppmw cobalt oxide in glass.When coexisting with cobalt, selenium helps to obtain bronze to gray tone.

Coating comprises metal or metal oxide layer usually, and under one situation of back, described layer also can comprise dopant material, for example fluorine or antimony.Many low-emissivity coatings are known in this specialty, wherein anyly all can be used for the present invention.The radiant ratio of specific coating refers to the tendency of coating quantity of radiant energy.Therefore, low-emissivity coating is undesirable heat radiator (compare with black matrix, black matrix is the ideal radiator, and it is whole 1 that definition has transmissivity).Low-emissivity coating can be in two base types: " hard " or " pyrolysis " coating and off-line (off-line) coating, the latter uses sputtering method production usually, and is softer than typical pyrolytic coating usually.

Hard coat can " online " method deposit, and its floating coat for example uses the chemical Vapor deposition process pyrolytic deposition in forming process in known manner on the surface of float glass.Usually, deposit present glass ribbon and be in 400-760 ℃ float glass process production line zone; Can find to be in of the outlet of the glass of this temperature, in the annealing furnace gap (gap between Xi Chi and the annealing furnace just) and in the hot junction of annealing furnace towards Xi Chi.When glass Full Annealing (just from higher state of temperature order cool to room temperature), coating is cured, and therefore is fused to the part of the final glassy product of coating substance effective constitution on the glass surface at first by pyrolysis.The coated side of glass can further be carried out polishing process, and the microscopic asperity of coatingsurface is descended, can more tractable glass so that obtain.

Off-line coatings is just to deposit to later on coating on the glass pane surface in the manufacturing of finishing glass in the separate processes of separating with float glass process.Therefore, described deposition method is " off-line " method.Off-line coatings comprises for example uses the splash coating of magnetron sputtering technique in the vacuum condition deposit.

Usually, be such at the low-emissivity coating of the existence on glass that is used for window glass of the present invention, when being used for 3 millimeters transparent float glass, the radiant ratio of coated glass is 0.05-0.45; Actual numerical value is measured according to EN 12898 (a kind of standard that European sheet glass AEM announces); Making radiant ratio is preferred less than 0.3 coating (when being used in 3 millimeters transparent float glass).The radiant ratio of hard coat is usually greater than 0.15 (preferably less than 0.2), and the radiant ratio of off-line coatings (being generally splash coating) is usually greater than 0.05 (preferably less than 0.1).In both cases, its radiant ratio can compare with the common radiant ratio that the transparent glass of coating not has, and its numerical value is about 0.89.

Low-E hard (or pyrolysis) coating can comprise the metal oxide individual layer, the conductive oxide of described metal oxide preferably transparent.The metal for example oxide compound of tin, zinc, indium, tungsten and molybdenum can be included in the metal oxide individual layer.Usually, coating also comprises doping agent, for example fluorine, chlorine, antimony, tin, aluminium, tantalum, niobium, indium or gallium, so that can obtain for example indium oxide coating of the adulterated stannic oxide of fluorine and tin dope of coating.Usually, such coating has bottom, the bottom of silicon oxide-containing or silicon oxynitride for example, the color eliminating layer of blocking layer that it moves from glass as the control alkalimetal ion and/or the iris reflected colour that produces as the thickness deviation of eliminating by the low-E layer.

The off-line low-emissivity coating generally includes a plurality of layers coating and piles up, and it generally includes metal level (or metallic compound of conduction) and one dielectric layer at least.A plurality of layers stacked structure can repeat, so that further strengthen the radiant ratio of coating.In other similar metal, silver, gold, copper, nickel and chromium can be used as described metal level in multiple-level stack; Indium sesquioxide, weisspiessglanz etc. can be used as the metallic compound of described conduction.Typical multiple-level stack is to be included in dielectric layer for example inserts one deck or two-layer silver between the oxide skin of silicon, aluminium, titanium, vanadium, tin or zinc coating.Usually, form one or more layers thickness of described coating for tens of approximately nanometers.

The glass that is used for window glass of the present invention can be flat or crooked, can for example carry out tempering with hot tempering or chemical tempering in addition.When glass through for example tempering or when crooked, it can or carry out later on before the low-emissivity coating deposition of heat treatment process.If heat treatment process is carried out after coating deposition, coating should be and is exposed under the high temperature the not coating of deterioration.

Usually, the thickness of glass is 8 millimeters or littler (but greater than 1.5 millimeters), but the thickness of 2-6 millimeter is preferred.

The pane of tinted glass that is used for window glass of the present invention has following transparent parent glass compositing range (by weight):

SiO ₂ 68-75％

Al ₂O ₃ 0-5％

Na ₂O 10-18％

K ₂O 0-5％

MgO 0-10％

CaO 5-15％

SO ₃ 0-2％

Glass also can contain other additive, clarification aid for example, and its quantity is at most to 2% usually.

Usually, the ferrous oxide content (in FeO) that is used for the glass of window glass is 0.05-1.6 weight %.Be incident on the absorption of the total energy that (particularly is incident on the not coatingsurface of window glass) on the window glass, particularly the absorption with the heat energy of IR forms of radiation can reach by the ferrous oxide content of regulating window glass.Preferably, ferrous oxide content is greater than 0.4 weight %, more preferably greater than 0.8 weight %, most preferably greater than 1.2 weight %.The ferrous oxide content of glass is high more, and particularly near infrared (" NIR ") radiation is many more for the total energy that glass absorbs, and near-infrared radiation is shorter wavelength IR radiation, so the energy height.Relation between the radiation of specific wavelength (going into) and the corresponding energy (E) is as follows:

E＝hc/λ

H is a quantum of action in the formula, and c is the light velocity.

But the solar energy that glass absorbs can not remain on the state of being absorbed, but by glass with the wavelength region that is different from projectile energy and to the radiation again of all directions, so at least some radiation leave low-emissivity coating, and some point to it.Reradiative energy comprises the IR component of longer wavelength, therefore than incident NIR component lower energy is arranged.Low-emissivity coating is the bad radiator of long wavelength IR radiating, so that the total energy that enters in the vehicle that solar control glazing of the present invention is housed reduces.

Advantageously, the nickel content (in NiO) that is used for the glass of window glass serve as at most to 500ppm, be preferably greater than 55ppm, more preferably greater than 100ppm, most preferably greater than 200ppm.Nickel is that a kind of being added to can obtain the composition that ash is transferred to brown in the glass composition.

Usually, the transmission of visible light of window glass is 50% or littler.The transmission of visible light of window glass C.I.E.Illuminant A (" LT _A") the 380-780 nanometer wavelength range with 5 nanometers at interval from window glass not coated side measure.But, window glass painted dark more, visible transmission is few more; Therefore the preferred transmission rate be 36% or littler, be more preferably less than 28% and even more preferably 20% or littler.In Europe, the transmission of visible light of laws and regulations requirement vehicle windscreen must be not less than 75% (and the laws and regulations requirement of the U.S. is not less than 70%).In the Europe and the U.S., require the transmission of visible light of front door glass to be not less than 70%; The transmission of visible light of all other vehicle glass (for example rear window or roof glass) can be less than 70%.Therefore, window glass according to a first aspect of the invention is as tail gate glass, rear window and roof glass, but can not can not be as windshield glass as front door glass.

When at Air Mass 2, when ISO measured for 9050 times, the transmission potential of window glass was preferably 30% or littler.More preferably the transmission potential of window glass is less than 20%, most preferably less than 10%.Transmission potential (" TE ") is also referred to as direct solar heat transmittance (" DSHT "), measures under the interval in 350-2100 nanometer wavelength range, 50 nanometers under AirMass 2 (simulation is having 30 ° of angle incident solar rayss with level).Low-emissivity coating is presented at that to reduce the particularly more low-yield IR radiation of quantity of radiant energy (except comprising the more low-yield IR radiation of incident) aspect be successful again, and the heat by described window glass transmission is reduced.

For the vehicular manufacturer, in our present commercial environment, wish that especially window glass absorbs higher-energy IR radiation subsequently to the reradiative more low-yield IR radiation of small part minimizing.Reaching the comfortableness of superior automotive occupant, for example increase by reducing the vehicle interior heat, and reduce the requirement of vehicle resources for example by reducing the needs that use air-conditioning system etc., is the very top-priority thing of vehicular manufacturer's today.

As above-mentioned, painted pane plate internal surface is provided with and is used for low-emissivity coating of the present invention, on described internal surface, described coating can reduce the quantity of sunlight IR radiation by window glass (comprise the radiation again of longer wavelength ray, it is to be incident on the not absorbed direct result of shorter wavelength IR ray on the coatingsurface of described window glass).In summer, the solar radiation quantity that is incident on the window glass is normally maximum, and above-mentioned use has maximum utility.

But the colored glass of coating of the present invention also has the other benefit.When particularly needing to heat vehicle interior in the winter time and for example giving vehicle glazing mist elimination gas, low-emissivity coating (it is on the glass surface of vehicle interior) also can suppress to escape into from vehicle interior the thermal radiation the outside vehicle environment.The calorific loss that reduces vehicle can reduce " cold shoulder effect ".The essential characteristic of this effect is that the temperature part that the passenger of close vehicle window in the vehicle (the most normal is side window glass) may feel turns cold.The calorific loss that cold shoulder effect is a vehicle is to extraneous result, and particularly heat loses by vehicle window, especially at cold day.Low-emissivity coating can be got back to vehicle by reflection longer wavelength (more low-yield) IR ray and reduce this thermosteresis, and it can heat the local freezing air near vehicle window there.

Advantage of the present invention can have the tinted interlayers of transparency glass plate and/or pane of tinted glass and multilayered structure to obtain with the colored glass compositions or the use of wide region.

According to a second aspect of the invention, a kind of multiple glazing that is used for vehicle is provided, comprising two has the sheet glass that accompanies the middle layer therebetween, and wherein at least one sheet glass or sheet of interlayer material have low emissivity coatings by integral colouring with on the internal surface of window glass.

Automobile-used window glass of the present invention can be windshield glass, side window glass or rear window, but works of the present invention is specially adapted to roof glass (roof hatch glass), when solar radiant heat is the strongest (when the sun is the highest on high), it obviously is subjected to stronger solar radiation, and may be very near officer and passenger.

It is shocking, do not find to use low-emissivity coating can make the heat that enters vehicle produce unacceptable accumulation; Certainly modern vehicle is equipped with air-conditioning, and this may not be a problem, with by window glass again radiation or transmission reach the uncomfortable property that the high-level thermal radiation of Vehicular occupant produces and compare, the importance that is with or without air-conditioning is much lower.

According to a preferred aspect of the present invention, the multiple glazing that is used for vehicle comprises that (coloured part of described glass contains the total iron of 0.5-4.0% (by glass weight) (with Fe to a slice pane of tinted glass ₂O ₃Meter)) another sheet glass and be clipped in therebetween intermediate layer material and the low-emissivity coating on the window glass internal surface.

According to another preferred aspect of the present invention, the multiple glazing that is used for vehicle comprises outer sheet glass, interior sheet glass and is clipped in the intermediate layer material and the low-emissivity coating on the window glass internal surface of integral colouring therebetween.

" internal surface " of so-called multiple glazing refers to the surface (outside surface of sheet glass just) that described window glass exposes in the vehicle that this window glass can be installed.If use traditional surface number term, the surface that wherein contacts the multiple glazing of car external environment is called surface 1, and the surface of contact internal medium is called surface 4, and coating is positioned at (low-emissivity coating is present than far better on surface 2 or surface 3 in the performance on the surface 4) on the surface 4 so.

Usually, pane of tinted glass is the outer sheet glass (with respect to the vehicle interior that window glass can be installed) of multiple glazing, and another sheet glass that can be transparent glass or colored glass is interior sheet glass, though reverse situation also is possible.

The optimization thickness of such window glass is 1O millimeter or littler (but greater than 3 millimeters), but the thickness of 4-7 millimeter is preferred.And the thickness that constitutes each piece of multiple glazing is preferably in the 1.5-5 millimeter scope, though preferred 2-3.5 millimeter.

Sheet of interlayer material usually is transparent plastic sheet, for example polyvinyl butyrate or other this type of plies of material of being fit to, and thickness is 0.76 millimeter usually.Perhaps, the sheet of interlayer material pigmentable is 35% or littler, preferred 18% or littler to the transmission of visible light of optimizing.And sheet of interlayer material can absorb infrared-ray, for example when it contains the Indium sesquioxide of tin dope.What is called is called sheet of interlayer material " absorbing infrared " and is meant that working as such sheet (0.76 mm thick) is clipped between two blocks of transparent glasses (each piece 2.1 mm thick) plate, the selectivity of the multiple glazing that obtains greater than 0.5, be preferably greater than 1, here " selectivity " by calculating the visible transmission percentage divided by total energy percentage ratio, just LT _A/ TE measures each multiple glazing.

The total iron content of pane of tinted glass can be preferably 0.8-2.0 (in weight of glass percentage ratio), more preferably 1.0-1.8,1.3-1.6 most preferably.Pane of tinted glass also can comprise other tinting material component, for example Yi Xia one or more: 5-350ppm (by glass weight) (preferred 40-320ppm, more preferably 100-270ppm, 150-230ppm most preferably) cobalt oxide (with Co ₃O ₄Meter), by weight of glass at most to the nickel oxide (in NiO) of 500ppm (be preferably greater than 55, more preferably greater than 100, most preferably greater than 200ppm) and by weight of glass maximum to 70ppm (preferably less than 55, be more preferably less than 35, most preferably less than 20ppm) selenium.

Have another sheet glass of low-emissivity coating to can be transparent glass (" selecting A ") from the teeth outwards, it is formed for example can comprise (weight) 72.1%SiO ₂, 1.1%Al ₂O ₃, 13.5%Na ₂O, 0.6%K ₂O, 8.5%CaO, 3.9%MgO, 0.2%SO ₃With the optional 0.2%Fe that arrives at most ₂O ₃(preferably less than 0.15%), or it can be colored glass (" select B "), and its tinting material partly comprises the total iron of 0.5-4.0% (by weight of glass) (with Fe ₂O ₃Meter), 0.05-1.6 weight % iron protoxide (in FeO), 5-350ppm cobalt oxide are (with Co ₃O ₄Meter), transmission of visible light is 75% or littler, and the energy of transmission is 45% or lower in the time of 2.1 millimeters.

The total iron content of another sheet glass when painted is preferably 0.8-2.0 weight %, more preferably 1.0-1.8 weight %, 1.3-1.6 weight % most preferably.Equally, cobalt contents is preferably 40-320ppm, more preferably 100-270ppm, 150-230ppm most preferably.Usually, if painted, another sheet glass can be grey, blueness or green, even may be bronze glass.The ferrous oxide content of described another sheet glass usually greater than 0.4 weight %, be preferably greater than 0.8 weight %, more preferably greater than 1.2 weight %.

Usually, the transmission of visible light of another sheet glass is 55% or littler, though 36% or littler even 20% or be preferred more for a short time, and the energy of transmission preferably less than 30%, be more preferably less than 21%.

The transmission of visible light of multiple glazing be preferably 35% or littler, more preferably 18% or littler, most preferably 10% or littler.Preferably, the transmission potential of multiple glazing is 20% or littler.More preferably transmission potential is 15% or littler even 11% or littler.

Another possibility is, another sheet glass of multiple glazing can be colored glass (" selecting C "), and its tinting material partly comprises the total iron of 0.4-4.0% (glass weight meter) (with Fe ₂O ₃Meter), 0.05-1.6 weight % iron protoxide (in FeO) and transmission of visible light are 82% or littler, when under thickness of glass is 3.9 millimeters, measuring, the energy of transmission less than 60% (and when thickness of glass be 2.1 millimeters when measuring down, transmission of visible light is 88% or littler, and the energy of transmission is 72% or littler).

The total iron content of such pane of tinted glass is preferably 0.45-2.0 (representing with weight percentage), more preferably 0.5-1.5,0.58-1.1 most preferably.Ferrous oxide content (representing with FeO) is preferably greater than 0.07%, more preferably greater than 0.09%, most preferably greater than 0.1%.

Usually, such pane of tinted glass is green.Under 3.9 millimeters of thickness, its transmission of visible light is less than 80% (under 2.1 millimeters of thickness, transmission of visible light is less than 87%), and under 3.9 millimeters of thickness, the energy of transmission can be preferably less than 57% (under 2.1 millimeters of thickness, the energy of transmission be less than 70%).

Introducing according to the painted sheet glass of above-mentioned selection C as the transmission of visible light of the multiple glazing of " another sheet glass " usually greater than 70%, may be greater than 75%, and the energy of transmission is 60% or littler, preferred 55% or littler.

When using the intermediate layer material of integral colouring, the optimization thickness of multiple glazing is 10 millimeters or littler (but greater than 3 millimeters), but 4-8 millimeter thickness is preferred.In addition, the thickness of each sheet in multiple glazing is the 1.5-5 millimeter advantageously, though the 2-3.5 millimeter is preferred.

Sheet of interlayer material is generally for example this type of plies of material of being fit to of polyvinyl butyrate or other of plastic sheet, and to make the transmission of visible light under 0.76 millimeter of the thickness be 35% or littler through painted for it.Preferably, intermediate layer material through painted make optical transmittance less than 30%, be more preferably less than 25%.In addition, intermediate layer material absorbs infrared-ray usually, for example when it contains the material of the Indium sesquioxide, lanthanum hexaborane of tin dope or other absorption infrared-ray that is fit to.The transmission potential of intermediate layer material can be 25% littler, preferred 20% or littler, most preferably 15% or littler.

A slice at least in multiple glazing can be transparent glass, and its composition for example can comprise (by weight) 72.1%SiO ₂, 1.1%Al ₂O ₃, 13.5%Na ₂O, 0.6%K ₂O, 8.5%CaO, 3.9%MgO, 0.2%SO ₃With the optional 0.2%Fe that arrives at most ₂O ₃(preferably less than 0.15%).Perhaps, at least one sheet glass can be colored glass, and its coloured part contains the total iron of 0.4-4.0% (by glass weight) (with Fe ₂O ₃Count) and 0.05-1.6 weight % iron protoxide (in FeO).

The total iron content of such pane of tinted glass is preferably (in weight %) 0.50-2.0, more preferably 0.54-1.5,0.56-1.1 most preferably.Ferrous oxide content (representing with FeO) is preferably greater than 0.09%, more preferably greater than 0.1%, most preferably greater than 0.12%.

Transmission of visible light with multiple glazing of tinted interlayers be preferably 50% or littler, more preferably 40% or littler, most preferably 35% or littler.Preferably, the transmission potential of multiple glazing be 30% or littler, more preferably 20% or littler.

Preferably, multiple glazing of the present invention is at least 15%, particularly at least 20% in particular as the transmission of visible light (LTA) of the multiple glazing of roof hatch glass, and total sunlight thermal transmittance is big by 15% unlike optical transmittance, preferably big by 10% unlike optical transmittance.

The window glass of first and second aspects can be used as the vehicle roof window glass according to the present invention.It can be used as traditional roof hatch glass or as constituting the vehicle window glass of whole car roof area basically, the latter usually is called " Quan Ding skylight ".When satisfying suitable transmission of visible light requirement, the window glass of second aspect present invention also can be used as vehicle windscreen.

In order to understand better, existing by non-limiting example with more specifically describe the present invention with reference to the accompanying drawings, wherein:

Fig. 1 is the sectional view of automobile-used window glass,

Fig. 2 is the sectional view according to the automobile-used window glass of multilayer of second aspect present invention, wherein on surface 4 low-emissivity coating is arranged, and

Fig. 3 is the sectional view according to the automobile-used window glass of multilayer of third aspect present invention, wherein on surface 4 low-emissivity coating is arranged.

The automobile-used window glass 10 of Fig. 1 includes the sheet glass 11 of internal surface 12 and outside surface 13 (with respect to the marking of cars that window glass 10 is installed).Coating 14 is arranged on the internal surface 12; Coating 14 can be located immediately on the internal surface 12, or it can be on one or more layers other coating (not shown) on the internal surface 12.Other coating like this can be the blocking layer, so that protection window glass 10 may be moved to the influence of the material of window glass 10 when not had the blocking layer from coating 14.

Sheet glass 11 can be smoked glass, and its parent glass is formed and comprised (by weight) 72.1%SiO ₂, 1.1%Al ₂O ₃, 13.5%Na ₂O, 0.6%K ₂O, 8.5%CaO, 3.9%MgO and 0.2%SO ₃, its tinting material partly contains (by weight) 1.45% total iron (with Fe ₂O ₃Meter), 0.30% iron protoxide (in FeO), 230ppm Co ₃O ₄, 210ppm NiO and 19ppm Se-composition 1 hereinafter referred to as.In Britain, such glass now from Pilkington plc with GALAXSEE ^TMProvide.

Coating 14 is a low-emissivity coating.Just as shown in table 1 below, when the radiant ratio of coating 14 be ε and coating 14 when sheet glass 11 (having above-mentioned composition 1) is gone up, the window glass 10 that generates under specific thickness has following character:

Table 1

Embodiment	ε	The thickness of window glass 10	LT _A (％)	TE (％)	TSHT (％)	a*	b*
Embodiment	ε	The thickness of window glass 10	LT _A (％)	TE (％)	TSHT (％)	a*	b*	1	0.05	5 millimeters	9.8	5.2	19.3	-7.4	4.7
2	0.18	5 millimeters	11	9	24.5	-4.2	3.6	1	0.05	5 millimeters	9.8	5.2	19.3	-7.4	4.7
2	0.18	5 millimeters	11	9	24.5	-4.2	3.6	3	0.45	5 millimeters	11	9.4	28.9	-4.4	2.7
4	-	5 millimeters	11.9	10.4	34.5	-4.2	2.4	3	0.45	5 millimeters	11	9.4	28.9	-4.4	2.7
4	-	5 millimeters	11.9	10.4	34.5	-4.2	2.4	5	0.05	6 millimeters	6.6	3.5	17.9	-7.1	4.6
6	0.18	6 millimeters	7.3	5.9	22.1	-4.4	3.6	5	0.05	6 millimeters	6.6	3.5	17.9	-7.1	4.6
6	0.18	6 millimeters	7.3	5.9	22.1	-4.4	3.6	7	0.45	6 millimeters	7.4	6.2	26.5	-4.6	2.8
8	-	6 millimeters	7.9	6.9	32	-4.4	2.5	7	0.45	6 millimeters	7.4	6.2	26.5	-4.6	2.8

Total solar heat transmittance of window glass (" TSHT ") is directly to absorb the summation of reradiative heat subsequently by the heat (TE just) of window glass transmission and the glass of window glass.The standard SAE J1796 that announces according to Society of automotive engineers obtains the TSHT observed value under 14k.p.h..Parameter a ^*And b ^*For according to the color coordinates of CIELAB system (under D65 2 ° observer measure), and be used for determining the color of window glass 10.

Embodiment 4 and 8 is a Comparative Examples, and the prior art form of their instructions window glass 10 does not have coating 14.Embodiment 1-4 and 5-8 clearly illustrate, there is slight influence (under 5 millimeters, to observe the decline of maximum 2.1 percentage points at the transmission of visible light that exists low-emissivity coating to window glass on the pane of tinted glass of being studied, observing maximum 1.3 percentage points under 6 millimeters descends), and compare the TE and the TSHT numerical value all lower (reducing by half in certain embodiments) of coated glass with the corresponding not window glass of coating.

Perhaps, sheet glass 11 can be green glass, and it is made up of identical parent glass with above-mentioned sheet glass 11, and its tinting material partly contains (by weight) 1.57% total iron (with Fe ₂O ₃Meter), 0.31% iron protoxide (in FeO), 115ppm Co ₃O ₄, 0ppm NiO and 5ppm Se-composition 2 hereinafter referred to as.In Britain, such glass now also from Pilkington plc with SUNDYM 435 ^TMProvide.When coating 14 had the radiant ratio shown in the following table 2 and be positioned on the sheet glass 11 of composition 2, the window glass 10 that forms under specific thickness had following character:

Table 2

Embodiment	ε	The thickness of window glass 10	LT _A (％)	TE (％)	TSHT (％)	a*	b*
Embodiment	ε	The thickness of window glass 10	LT _A (％)	TE (％)	TSHT (％)	a*	b*	9	0.05	5 millimeters	23	10.1	23.4	-15.3	2.8
10	0.18	5 millimeters	25.6	14	28.7	-11.5	1.3	9	0.05	5 millimeters	23	10.1	23.4	-15.3	2.8
10	0.18	5 millimeters	25.6	14	28.7	-11.5	1.3	11	0.45	5 millimeters	25.6	14.5	32.8	-11.8	0
12	-	5 millimeters	27.6	15.9	38.5	-11.6	-0.4	11	0.45	5 millimeters	25.6	14.5	32.8	-11.8	0
12	-	5 millimeters	27.6	15.9	38.5	-11.6	-0.4	13	0.05	6 millimeters	18.2	7.8	21.6	-16	2.5
14	0.18	6 millimeters	20.2	10.5	25.9	-12.7	1.2	13	0.05	6 millimeters	18.2	7.8	21.6	-16	2.5
14	0.18	6 millimeters	20.2	10.5	25.9	-12.7	1.2	15	0.45	6 millimeters	20.3	10.8	30	-12.9	0
16	-	6 millimeters	21.8	11.9	35.6	-12.7	-0.4	15	0.45	6 millimeters	20.3	10.8	30	-12.9	0

Embodiment 12 and 16 is other Comparative Examples, and the prior art form of their instructions window glass 10 does not have coating 14.Embodiment 9-12 and 13-16 be clearly explanation once more, there is slight influence (under 5 millimeters, to observe the decline of maximum 4.6 percentage points at the transmission of visible light that exists low-emissivity coating to window glass on the pane of tinted glass of being studied, observing maximum 3.6 percentage points under 6 millimeters descends), and compare the TE of coated glass and TSHT numerical value all lower (hanging down 1/3rd in certain embodiments) with the corresponding not window glass of coating.

Perhaps, sheet glass 11 can be green glass, and it is made up of the parent glass of similar above-mentioned composition 1 and 2, and its tinting material partly contains (by weight) 1.30% total iron (with Fe ₂O ₃Meter), 0.26% iron protoxide (in FeO), 128ppm Co ₃O ₄, 80ppm NiO and 7ppm Se-composition 3 hereinafter referred to as.This combination material is like above-mentioned composition 2, if therefore this glass is made window glass 10, the character of the window glass of making so 10 in can similar table 2 that measure and record those.

The sectional view explanation of Fig. 2, the automobile-used window glass 20 of multilayer comprises the middle synusia 24 that outer sheet glass 21, interior sheet glass 22 and nominal thickness are 0.76 millimeter PVB sheet form.Outer sheet glass 21 is a colored glass, and interior sheet glass 22 is colored glass or transparent glass (as described herein).When sheet glass 21 was for colored glass outside having only, the composition of sheet glass 11 was preferably selected from above-mentioned composition 1,2 or 3 so; If outer sheet glass 21 and interior sheet glass 22 all are colored glass, they are all by identical forming, and sheet glass 11 is still preferably selected from above-mentioned composition 1,2 or 3.For fear of query, though when window glass 20 only under sheet glass situation that is pane of tinted glass outer sheet glass 21 be described to pane of tinted glass, interior sheet glass 22 rather than outer sheet glass 21 are painted also to be possible.

In Fig. 2, the surface 4 of window glass 20 (outside surface of sheet glass 22 just) has coating 23, and with regard to window glass 10, described coating 23 can directly or indirectly be positioned on the described surface.Middle synusia 24 is clipped between outer sheet glass 21 and the interior sheet glass 22, when all three sheets carry out lamination process simultaneously in autoclave, two glass plies is forced together.Non-limitative example during when following table explanation multiple glazing 20 comprises various outer sheet glass 21 and interior sheet glass 22 compositions and with all kinds intermediate layer material lamination.For example, when coating 23 when having the low-emissivity coating of listed radiant ratio numerical value in each table, under the thickness of glass of regulation, multiple glazing 20 has listed character, wherein:

Its China and foreign countries' sheet glass 21 of table 3 expression and all painted same color of interior sheet glass 22 to above-mentioned composition 1, and interlayer sheet 24 has 35%LT for (a) transparent PVB, (b) _APainted PVB, (c) 18%LT is arranged _APainted PVB or (d) situation when as directed IR absorbs PVB (the PVB sheet is existing by Solutia Inc., PO Box 66760, St.Louis, Missouri 63166-6760USA provides),

Table 4 and table 3 are similar, and different is outer sheet glass 21 and interior sheet glass 22 be all painted to be arrived and same color according to above-mentioned composition 2,

It is painted that the outer sheet glass 21 of table 5 expression is pressed above-mentioned composition 1, and interior sheet glass 22 is transparent glass (usually as the aforementioned), and middle synusia 24 has 35%LT for (a) transparent PVB, (b) _APainted PVB, (c) 18%LT is arranged _APainted PVB or (d) as directed IR absorb PVB, and

Table 6 is similar with table 5, and different is that outer sheet glass 21 is painted by above-mentioned composition 2.

Table 3

Embodiment	The thickness of outer sheet glass 21	The thickness of interior sheet glass 22	Middle synusia 24	ε	LT _A (％)	TE (％)	TSHT (％)	a*	b*
Embodiment	The thickness of outer sheet glass 21	The thickness of interior sheet glass 22	Middle synusia 24	ε	LT _A (％)	TE (％)	TSHT (％)	a*	b*	17	2.1 millimeter	2.1 millimeter	a	0.05	13.6	7	20.8	-7.6	5.1
18	2.55 millimeter	2.55 millimeter	a	0.05	9.4	4.9	19.1	-7.4	5	17	2.1 millimeter	2.1 millimeter	a	0.05	13.6	7	20.8	-7.6	5.1
18	2.55 millimeter	2.55 millimeter	a	0.05	9.4	4.9	19.1	-7.4	5	19	2.1 millimeter	2.1 millimeter	a	0.18	15.2	12.3	27	-4	3.9
20	2.55 millimeter	2.55 millimeter	a	0.18	10.5	8.5	24	-4.3	3.8	19	2.1 millimeter	2.1 millimeter	a	0.18	15.2	12.3	27	-4	3.9
20	2.55 millimeter	2.55 millimeter	a	0.18	10.5	8.5	24	-4.3	3.8	21	2.1 millimeter	2.1 millimeter	a	0.45	15.2	12.8	31.2	-4.3	2.8
22	2.55 millimeter	2.55 millimeter	a	0.45	10.5	8.8	28.2	-4.5	2.9	21	2.1 millimeter	2.1 millimeter	a	0.45	15.2	12.8	31.2	-4.3	2.8
22	2.55 millimeter	2.55 millimeter	a	0.45	10.5	8.8	28.2	-4.5	2.9	23	2.1 millimeter	2.1 millimeter	a	-	16.4	14.1	36.8	-4	2.5
24	2.55 millimeter	2.55 millimeter	a	-	11.4	9.7	33.8	-4.4	2.8	23	2.1 millimeter	2.1 millimeter	a	-	16.4	14.1	36.8	-4	2.5
24	2.55 millimeter	2.55 millimeter	a	-	11.4	9.7	33.8	-4.4	2.8	25	3.1 millimeter	3.1 millimeter	b	0.18	2.6	2.4	19.3	-6.9	3.3
26	3.1 millimeter	3.1 millimeter	b	-	2.8	2.9	29	-7	2.6	25	3.1 millimeter	3.1 millimeter	b	0.18	2.6	2.4	19.3	-6.9	3.3
26	3.1 millimeter	3.1 millimeter	b	-	2.8	2.9	29	-7	2.6	27	3.1 millimeter	3.1 millimeter	c	0.18	1.4	1.7	18.8	-3.1	3.4
28	3.1 millimeter	3.1 millimeter	c	-	1.5	2.1	28.4	-3.2	2.9	27	3.1 millimeter	3.1 millimeter	c	0.18	1.4	1.7	18.8	-3.1	3.4
28	3.1 millimeter	3.1 millimeter	c	-	1.5	2.1	28.4	-3.2	2.9	29	3.1 millimeter	3.2 millimeter	d	0.18	5.8	3.8	20.4	-5.1	4.8
30	3.1 millimeter	3.2 millimeter	d	-	6.3	4.1	29.8	-5.2	3.9	29	3.1 millimeter	3.2 millimeter	d	0.18	5.8	3.8	20.4	-5.1	4.8

Embodiment 23,24,26,28 and 30 is a Comparative Examples, and the prior art form of multiple glazing 20 is described, does not have coating 20.Embodiment 17-24 specifically shows, on the exposed surface of multiple glazing of the present invention, exist low-emissivity coating that the transmission of visible light of window glass is had slight influence (for 2 * 2.1 millimeters sheets, observe the decline of maximum 2.8 percentage points, and for 2 * 2.55 millimeters sheets, observing maximum 2 percentage points descends), and compare the TE of coated glass and TSHT numerical value all lower (reducing by half in certain embodiments) with the corresponding not window glass of coating.

Table 4

Embodiment	The thickness of outer sheet glass 21	The thickness of interior sheet glass 22	Middle synusia 24	ε	LT _A (％)	TE (％)	TSHT (％)	a*	b*
Embodiment	The thickness of outer sheet glass 21	The thickness of interior sheet glass 22	Middle synusia 24	ε	LT _A (％)	TE (％)	TSHT (％)	a*	b*	31	2.1 millimeter	2.1 millimeter	a	0.05	27.6	12.3	25.2	-14.6	3.3
32	2.55 millimeter	2.55 millimeter	a	0.05	22.3	9.7	23.1	-15.4	3.1	31	2.1 millimeter	2.1 millimeter	a	0.05	27.6	12.3	25.2	-14.6	3.3
32	2.55 millimeter	2.55 millimeter	a	0.05	22.3	9.7	23.1	-15.4	3.1	33	2.1 millimeter	2.1 millimeter	a	0.18	30.8	17.6	31.4	-10.5	1.8
34	2.55 millimeter	2.55 millimeter	a	0.18	24.9	13.5	28.1	-11.8	1.6	33	2.1 millimeter	2.1 millimeter	a	0.18	30.8	17.6	31.4	-10.5	1.8
34	2.55 millimeter	2.55 millimeter	a	0.18	24.9	13.5	28.1	-11.8	1.6	35	2.1 millimeter	2.1 millimeter	a	0.45	30.9	18.1	35.3	-10.8	0.4
36	2.55 millimeter	2.55 millimeter	a	0.45	24.9	13.8	32.1	-12	0.3	35	2.1 millimeter	2.1 millimeter	a	0.45	30.9	18.1	35.3	-10.8	0.4
36	2.55 millimeter	2.55 millimeter	a	0.45	24.9	13.8	32.1	-12	0.3	37	2.1 millimeter	2.1 millimeter	a	-	33	20	41	-10.7	0
38	2.55 millimeter	2.55 millimeter	a	-	27	15	37.7	-11.9	0	37	2.1 millimeter	2.1 millimeter	a	-	33	20	41	-10.7	0
38	2.55 millimeter	2.55 millimeter	a	-	27	15	37.7	-11.9	0	39	3.1 millimeter	3.1 millimeter	b	0.18	8.1	4.4	20.9	-15	1.6
40	3.1 millimeter	3.1 millimeter	b	-	8.7	5	30.5	-15.1	0.5	39	3.1 millimeter	3.1 millimeter	b	0.18	8.1	4.4	20.9	-15	1.6
40	3.1 millimeter	3.1 millimeter	b	-	8.7	5	30.5	-15.1	0.5	41	3.1 millimeter	2.55 millimeter	c	0.18	4.7	3.2	20	-8.8	2.3
42	3.1 millimeter	2.55 millimeter	c	-	5.1	3.8	29.6	-8.9	1.4	41	3.1 millimeter	2.55 millimeter	c	0.18	4.7	3.2	20	-8.8	2.3
42	3.1 millimeter	2.55 millimeter	c	-	5.1	3.8	29.6	-8.9	1.4	43	3.1 millimeter	3.1 millimeter	d	0.18	18	8.2	24.1	-13.5	2.6
44	3.1 millimeter	3.1 millimeter	d	-	19.4	9	33.3	-13.7	1.1	43	3.1 millimeter	3.1 millimeter	d	0.18	18	8.2	24.1	-13.5	2.6

Embodiment 37,38,40,42 and 44 is a Comparative Examples, and the prior art form of multiple glazing 20 is described, does not have coating 20.Embodiment 31-38 specifically shows, on the exposed surface of multiple glazing of the present invention, exist low-emissivity coating that the transmission of visible light of window glass is had slight influence (for 2 * 2.1 millimeters sheets, observe the decline of maximum 5.4 percentage points, and for 2 * 2.55 millimeters sheets, observing maximum 4.7 percentage points descends), and compare the TE of coated glass and TSHT numerical value all lower (low in certain embodiments more than 1/3rd) with the corresponding not window glass of coating.

Table 5

Embodiment	The thickness of outer sheet glass 21	The thickness of interior sheet glass 22	Middle synusia 24	ε	LT _A (％)	TE (％)	TSHT (％)	a*	b*
Embodiment	The thickness of outer sheet glass 21	The thickness of interior sheet glass 22	Middle synusia 24	ε	LT _A (％)	TE (％)	TSHT (％)	a*	b*	45	3.1 millimeter	2.3 millimeter	a	0.05	20.5	10.5	23.4	-8.1	5.3
46	3.1 millimeter	2.3 millimeter	a	0.18	22.7	18	31.5	-4.1	3.8	45	3.1 millimeter	2.3 millimeter	a	0.05	20.5	10.5	23.4	-8.1	5.3
46	3.1 millimeter	2.3 millimeter	a	0.18	22.7	18	31.5	-4.1	3.8	47	3.1 millimeter	2.3 millimeter	a	0.45	22.5	18.6	35.5	-4.3	2.7
48	3.1 millimeter	2.3 millimeter	a	-	24.3	20.5	41.3	-4	2.3	47	3.1 millimeter	2.3 millimeter	a	0.45	22.5	18.6	35.5	-4.3	2.7
48	3.1 millimeter	2.3 millimeter	a	-	24.3	20.5	41.3	-4	2.3	49	3.1 millimeter	2.3 millimeter	b	0.18	9.3	9	24.4	-8.6	3.5
50	3.1 millimeter	2.3 millimeter	b	-	10.1	10.6	34.4	-8.7	2.3	49	3.1 millimeter	2.3 millimeter	b	0.18	9.3	9	24.4	-8.6	3.5
50	3.1 millimeter	2.3 millimeter	b	-	10.1	10.6	34.4	-8.7	2.3	51	3.1 millimeter	2.3 millimeter	c	0.18	4.9	6.3	22.3	-3.3	4.1
52	3.1 millimeter	2.3 millimeter	c	-	5.3	7.5	32.3	-3.3	3.2	51	3.1 millimeter	2.3 millimeter	c	0.18	4.9	6.3	22.3	-3.3	4.1
52	3.1 millimeter	2.3 millimeter	c	-	5.3	7.5	32.3	-3.3	3.2	53	3.1 millimeter	2.3 millimeter	d	0.18	21.1	13.8	28.3	-5	5.3
54	3.1 millimeter	2.3 millimeter	d	-	22.7	15	37.3	-5	3.9	53	3.1 millimeter	2.3 millimeter	d	0.18	21.1	13.8	28.3	-5	5.3

Embodiment 48,50,52 and 54 is a Comparative Examples, and the prior art form of multiple glazing 20 is described, does not have coating 20.Embodiment 45-48 specifically shows, slight influence is arranged (when using middle synusia (a) at the transmission of visible light that exists low-emissivity coating to window glass on the exposed surface of multiple glazing of the present invention, observe the decline of maximum 3.8 percentage points), and compare the TE of coated glass and TSHT numerical value all lower (reducing by half in certain embodiments) with the corresponding not window glass of coating.

As if comparing embodiment 45-47 and Comparative Examples 24 can be seen, use has the present invention of painted outer sheet glass and transparent interior sheet glass, can obtain the automobile-used window glass (LT than those much higher optical transmittances that reach with two dark pane of tinted glass that do not have low-emissivity coating under the condition that does not have obvious sunlight control characteristics loss _A＞20%).Really, when using radiant ratio less than 0.2 low-emissivity coating (embodiment 45-46), sunlight control characteristics is improved.

Table 6

Embodiment	The thickness of outer sheet glass 21	The thickness of interior sheet glass 22	Middle synusia 24	ε	LT _A (％)	TE (％)	TSHT (％)	a*	b*
Embodiment	The thickness of outer sheet glass 21	The thickness of interior sheet glass 22	Middle synusia 24	ε	LT _A (％)	TE (％)	TSHT (％)	a*	b*	55	2.55 millimeter	2.3 millimeter	a	0.05	40.3	18.6	30	-12.9	4.1
56	2.55 millimeter	2.3 millimeter	a	0.18	45.1	28.9	40.1	-8	2.3	55	2.55 millimeter	2.3 millimeter	a	0.05	40.3	18.6	30	-12.9	4.1
56	2.55 millimeter	2.3 millimeter	a	0.18	45.1	28.9	40.1	-8	2.3	57	2.55 millimeter	2.3 millimeter	a	0.45	45.1	29.7	43.8	-8.4	0.8
58	2.55 millimeter	2.3 millimeter	a	-	48.3	32.6	49.8	-8	0.3	57	2.55 millimeter	2.3 millimeter	a	0.45	45.1	29.7	43.8	-8.4	0.8
58	2.55 millimeter	2.3 millimeter	a	-	48.3	32.6	49.8	-8	0.3	59	3.1 millimeter	2.3 millimeter	b	0.18	16.5	11.4	26.4	-13.7	2.2
60	3.1 millimeter	2.3 millimeter	b	-	17.8	13.2	36.2	-13.9	0.8	59	3.1 millimeter	2.3 millimeter	b	0.18	16.5	11.4	26.4	-13.7	2.2
60	3.1 millimeter	2.3 millimeter	b	-	17.8	13.2	36.2	-13.9	0.8	61	3.1mm	2.3 millimeter	c	0.18	8.6	7.5	23.3	-6.9	3.2
62	3.1 millimeter	2.3 millimeter	c	-	9.2	8.8	33.2	-7	2.1	61	3.1mm	2.3 millimeter	c	0.18	8.6	7.5	23.3	-6.9	3.2
62	3.1 millimeter	2.3 millimeter	c	-	9.2	8.8	33.2	-7	2.1	63	3.1 millimeter	2.3 millimeter	d	0.18	37	19.4	33	-10.1	3.7
64	3.1 millimeter	2.3 millimeter	d	-	40.4	21.2	41.8	-10.1	1.8	63	3.1 millimeter	2.3 millimeter	d	0.18	37	19.4	33	-10.1	3.7

Embodiment 58,60,62 and 64 is a Comparative Examples, and the prior art form of instructions window glass 20 does not have coating 23.Embodiment 55-58 specifically shows, slight influence is arranged (when using middle synusia (a) at the transmission of visible light that exists low-emissivity coating to window glass on the exposed surface of multiple glazing of the present invention, observe the decline of maximum 8 percentage points), and compare the TE of coated glass and TSHT numerical value all lower (and in-a little embodiment low 1/3rd) with the corresponding not window glass of coating.

The most suitable vehicle side window glass and the roof hatch glass done of embodiment of listed multiple glazing among the table 3-6; There is not a kind of be suitable for make vehicle windscreen, because there is not a kind of transmission of visible light (in fact, all LT that surpasses 70% _AAll less than 50%).But following table 7 is listed the example that is suitable for the multiple glazing of making vehicle windscreen.The outer sheet glass 21 of these window glasss 20 and interior sheet glass 22 all can be transparent glass (for example above-mentioned) or have the green coloring glass of forming with above-mentioned composition 1,2 and 3 similar parent glass, and its tinting material partly contains (by weight) 0.6% total iron (with Fe ₂0 ₃Meter) and 0.13% iron protoxide (in FeO)-hereinafter referred to as composition 4-or contain 0.9% total iron (with Fe ₂O ₃Count) and 0.19% iron protoxide (in FeO)-hereinafter referred to as composition 5.Middle synusia 24 is transparent PVB sheet, and nominal thickness is 0.76 millimeter.In addition, the surface 4 of window glass 20 (outside surface of sheet glass 22 just) has coating 23, and with regard to window glass 10, coating 23 can directly or indirectly be positioned on the described surface.When coating 23 was the low-emissivity coating of the radiant ratio shown in the table 7, under the thickness of glass and composition of regulation, multiple glazing 20 had the character shown in the table 7.

Table 7

Embodiment	The thickness of outer sheet glass 21 and composition sequence number (x)	The thickness of interior sheet glass 22 and composition sequence number (x)	ε	LT _A (％)	TE (％)	TSHT (％)	P _R+ DSHT (watt/meter ²/K)	a*	b*
Embodiment			ε	LT _A (％)	TE (％)	TSHT (％)	P _R+ DSHT (watt/meter ²/K)	a*	b*	65	2.1 millimeter (x=4)	2.1 millimeter (x=4)	0.18	71.8	45.6	43.8	288.491	-7.1	3.9
66	2.6 millimeter (x=5)	2.1 millimeter (x=4)	-	70.9	43.6	42.8	347.53	-9	1.7	65	2.1 millimeter (x=4)	2.1 millimeter (x=4)	0.18	71.8	45.6	43.8	288.491	-7.1	3.9
66	2.6 millimeter (x=5)	2.1 millimeter (x=4)	-	70.9	43.6	42.8	347.53	-9	1.7	67	2.1 millimeter (x=4)	2.3 millimeter (x=is transparent)	0.18	76.1	56.6	54.5	349.23	-4.3	3.1
68	2.1 millimeter (x=4)	2.1 millimeter (x=4)	-	77.3	51.3	49.7	381.506	-7	1.5	67	2.1 millimeter (x=4)	2.3 millimeter (x=is transparent)	0.18	76.1	56.6	54.5	349.23	-4.3	3.1

Embodiment 66 and 68 is a Comparative Examples, and the prior art form of instructions window glass 20 does not have coating 23.In table 7, DSHT be under Air Mass 1.5 (simulation 37 ° of angle incident solar rayss are being arranged) with level in the 300-2500 nanometer wavelength range, measure under at interval in 5,10 and 50 nanometers.For the cated side of window glass, measure coating radiating the energy (" P on window glass _R")+DSHT.For these 4 embodiment, the measurement window glass not ambient air temp on the coated side is 30 ℃, and the lateral ambient air temp of measurement window glass coating is 20 ℃.Measurement incide window glass not the numerical value of the sun power on the coated side (expression sunlight incides on the surface 1 of the multiple glazing of installing as vehicle windscreen) be 600 watts/meter ²/ K (Wm ^-2K ^-1).Embodiment 65 and 66 explanations are adapted at the U.S. as the multiple glazing of windshield glass (LT wherein _ARequired value is 70% or bigger), and embodiment 67 and 68 is for being adapted at Europe as windshield glass (LT wherein _ARequired value is 75% or bigger).In each case, compare when coating being arranged on the window glass and do not have coating on window glass, obviously the total value of coating radiating energy+DSHT (of heat energy who in fact enters vehicle measures, and this vehicle is equipped with multiple glazing of the present invention) descends.

The automobile-used window glass 30 of Fig. 3 a kind of like this multilayer of explanation, it comprises the middle synusia 34 that outer sheet glass 31, interior sheet glass 32 and nominal thickness are the integral colouring PVB sheet form of 0.76 millimeter (though can use any thickness between the 0.25-1.6 millimeter).Outer sheet glass 31 and interior sheet glass 32 all are transparent glass (though it is painted also to have one or two sheet glass, for example being coloured to green according to above-mentioned composition 4 or 5).There is coating 33 on the surface 4 of window glass 30, and with regard to window glass 10 and 20, coating 33 can directly or indirectly be positioned on the described surface.Middle synusia 34 comprises painted and contains for example PVB of lanthanum hexaborane of infrared absorbing material.When with as during above-mentioned two transparency glass plate laminations, under 0.76 millimeter thickness, middle layer 34 independent transmission of visible lights are 20.6%, TE is 13.5%, TSHT is 37.1% and a ^*And b ^*Value is respectively-9.8 and 0.7.The non-limiting example of following table 8 explanation multiple glazings 30 has wherein shown the situation when this window glass 30 comprises the middle synusia of two 2.1 millimeters transparency glass plates (for example according to following composition), two kinds of different thickness and has the low-emissivity coating of radiant ratio numerical value as follows.

Table 8

Embodiment	Middle synusia	34	ε	LT _A (％)	TE (％)	TSHT (％)	a*	b*
Embodiment	Middle synusia	34	ε	LT _A (％)	TE (％)	TSHT (％)	a*	b*	69	0.76 millimeter	0.05	16.8	6.4	20.4	-13.4	3.6
70	0.76 millimeter	0.18	18.6	10.2	25.8	-10.4	2.5		69	0.76 millimeter	0.05	16.8	6.4	20.4	-13.4	3.6
70	0.76 millimeter	0.18	18.6	10.2	25.8	-10.4	2.5	71	0.76 millimeter	0.45	18.7	11.2	30.6	-10.5	1.3
72	0.76 millimeter	-	20.1	12.6	36.4	-10.4	0.9	71	0.76 millimeter	0.45	18.7	11.2	30.6	-10.5	1.3
72	0.76 millimeter	-	20.1	12.6	36.4	-10.4	0.9	73	0.4 millimeter	0.05	35	14.9	26.9	-12.1	4.3
74	0.4 millimeter	0.18	39.1	24.8	37.2	-7.6	2.7	73	0.4 millimeter	0.05	35	14.9	26.9	-12.1	4.3
74	0.4 millimeter	0.18	39.1	24.8	37.2	-7.6	2.7	75	0.4 millimeter	0.45	39.1	26.3	42	-7.9	1.3
76	0.4 millimeter	-	42.1	29.2	48.1	-7.6	0.8	75	0.4 millimeter	0.45	39.1	26.3	42	-7.9	1.3

Embodiment 72 and 76 is a Comparative Examples, and the prior art form of multiple glazing 30 is described, does not have coating 33.Embodiment 69-72 and 73-76 clearly illustrate, slight influence is arranged (in the middle of using 0.76 millimeter during synusia at the transmission of visible light that exists low-emissivity coating to window glass on the exposed surface of multiple glazing of the present invention, observe the decline of maximum 3.3 percentage points, when the synusia of 0.4 millimeter centre of use, observe the decline of maximum 7.1 percentage points), and compare the TE of coated glass and TSHT numerical value all lower (and reducing by half in certain embodiments) with the corresponding not window glass of coating.

Claims

1. an automobile-used window glass comprises pane of tinted glass, and the tinting material of described sheet glass partly comprises the total iron of 1.0-1.8% (by weight of glass) (with Fe ₂O ₃Meter), the 100-270ppm cobalt oxide is (with Co by weight ₃O ₄Count) and by weight less than 20ppm selenium (in Se), and the low-emissivity coating on the internal surface of described sheet glass.

2. according to the automobile-used window glass of claim 1, the radiant ratio of its floating coat is 0.05-0.45.

3. according to the automobile-used window glass of claim 1 or 2, its floating coat comprises transparent conductive oxide.

4. according to the automobile-used window glass of claim 3, its floating coat also comprises doping agent.

5. according to the automobile-used window glass of claim 1 or 2, its floating coat comprises metal level and at least one dielectric layer.

6. each automobile-used window glass in requiring according to aforesaid right, wherein pane of tinted glass is a toughened glass.

7. each automobile-used window glass in requiring according to aforesaid right, wherein the thickness of pane of tinted glass is the 1.5-8 millimeter.

8. each automobile-used window glass in requiring according to aforesaid right, wherein pane of tinted glass contains 0.05-1.6 weight % iron protoxide (in FeO).

9. each automobile-used window glass in requiring according to aforesaid right, wherein pane of tinted glass contains by weight at most to 500ppm nickel oxide (in NiO).

10. each automobile-used window glass during an aforesaid right requires, its transmission of visible light be 50% or littler and transmission potential be 30% or littler.

11. a multiple glazing that is used for vehicle, comprise two therebetween lamination the sheet glass of middle synusia arranged, wherein at least one sheet glass or sheet of interlayer material are integral colouring, also are included in the low-emissivity coating on the internal surface of window glass.

12. the multiple glazing according to claim 11 comprises pane of tinted glass, the tinting material of described sheet glass partly comprises the total iron of 0.5-4.0% (by weight of glass) (with Fe ₂O ₃Meter), another sheet glass, piece layer are pressed its sheet of interlayer material, and the low-emissivity coating on the internal surface of window glass.

13. according to the multiple glazing of claim 11, comprise outer sheet glass, the sheet of interlayer material of interior sheet glass and lamination integral colouring therebetween and the low-emissivity coating on the internal surface of window glass.

14. according to the multiple glazing of any claim 11-13, the thickness of wherein said window glass is the 3-10 millimeter.

15. according to the multiple glazing of claim 14, wherein the thickness of each sheet glass is the 1.5-5 millimeter.

16. according to each multiple glazing among the claim 11-15, wherein sheet of interlayer material is transparent, and comprises polyvinyl butyrate.

17. according to the multiple glazing of claim 16, wherein sheet of interlayer material is 35% or littler through the painted transmission of visible light that makes.

18. according to each multiple glazing among the claim 11-17, wherein under 0.76 millimeter thickness, sheet of interlayer material is 35% or littler through the painted transmission of visible light that makes, and transmission potential is 25% or littler.

19. according to each multiple glazing among the claim 11-17, wherein sheet of interlayer material is infrared for absorbing.

20. according to each multiple glazing among the claim 11-19, wherein at least one sheet glass is transparent glass.

21. according to claim 12 be subordinated among the 14-19 of claim 12 each multiple glazing, wherein said another sheet glass is a colored glass, its tinting material partly contains the total iron of (by weight) 0.5-4.0% (with Fe ₂O ₃Meter), by weight 0.05-1.6% iron protoxide (in FeO), the 5-350ppm cobalt oxide is (with Co by weight ₃O ₄Meter), under 2.1 millimeters thickness, transmission of visible light is 75% or littler, and transmission potential is 45% or littler.

22. according to claim 12 be subordinated among the 14-19 of claim 12 each multiple glazing, wherein said another sheet glass is a colored glass, its tinting material partly contains the total iron of (by weight) 0.4-4.0% (with Fe ₂O ₃Meter), 0.05-1.6% iron protoxide (in FeO) by weight, under 2.1 millimeters thickness, transmission of visible light is 88% or littler, and transmission potential is 72% or littler.

23. according to each multiple glazing among the claim 11-22, wherein visible light transmittance is 35% or littler, and transmission potential is 20% or littler.

24. according to each multiple glazing among the claim 11-22, wherein visible light transmittance is 70% or bigger, and transmission potential is 60% or littler.

25. according to each multiple glazing among the claim 11-24, wherein at least one sheet glass is transparent glass or the colored glass that following tinting material part is arranged, described tinting material partly contains the total iron of 0.4-4.0% (by glass weight) (with Fe ₂O ₃Count) and 0.05-1.6 weight % iron protoxide (in FeO).

26. according to each multiple glazing among the claim 11-25, wherein transmission of visible light is 50% or littler, perhaps the energy of transmission is 30% or littler.

27. each window glass was as the application of roof hatch glass during aforesaid right required.

28. the multiple glazing in the claim 11,12 or 13 is as the application of windshield glass.

29. multilayer vehicle roof window glass is that window glass according to claim 11 comprises the extrinsic color sheet glass and has the interior transparency glass plate of low-emissivity coating.

30. multilayer vehicle roof window glass, be according to the window glass of claim 11 wherein sheet of interlayer material be integral colouring.

31. according to the multilayer vehicle roof window glass of claim 29 or 30, wherein low-emissivity coating is a pyrolytic coating.

32. according to each multilayer vehicle roof window glass among the claim 29-31, transmission of visible light at least 15% wherein, and total solar heat transmittance is big by 15% unlike its optical transmittance.

33. one kind basically as above-mentioned and with reference to the accompanying drawings and automobile-used window glass as shown in the drawing.

34. one kind basically as above-mentioned and with reference to the accompanying drawings and multiple glazing as shown in the drawing.