MXPA06005433A - Intermediate film for laminated glass and laminated glass - Google Patents

Abstract

An intermediate film with which laminated glass is suitably obtained, the intermediate film having excellent transparency, heat shielding capability, and electromagnetic wave transmission capability even if it is sandwiched between a pair of sheets of glass to produce laminated glass. Further, when the laminated glass is subjected to a durability test by light, a visible light transmission factor is not reduced after the test, initial optical quality is not impaired, and excellent antiweatherability is achieved. The intermediate film for laminated glass has at least one or more of each of heat shielding layers and ultraviolet light shielding layers.

Description

INTERMEDIATE FILM FOR AMINATED GLASS AND LAMINATED GLASS FIELD OF THE INVENTION The present invention relates to an interlayer film for a laminated glass that is excellent in transparency, property of heat insulation and electromagnetic wave transmittance in the case of being used for a laminated glass and does not deteriorate in the properties initial optics even after a light stability test and a laminated glass obtained by using the interlayer film for a laminated glass. BACKGROUND OF THE INVENTION Since a laminated glass is sparsely scattered in waste even when it breaks upon receiving an outside impact and is therefore safe, laminated glass has been widely used for a window pane for vehicles such as automobiles, aircraft, buildings and similar. Examples of laminated glass are those obtained by inserting an interlayer film for a laminated glass comprising polyvinyl acetal resins such as plasticized polyvinyl butyral resin by a plasticizer between at least one pair of crystals and by joining the film with crystals. Although laminated glass that uses an interlayer film for laminated glass is excellent in terms of Ref. 172436 security, has an inconvenient point that is inferior in heat insulation property. Generally, infrared (IR) rays with a shorter wavelength at 780 nm, which is longer than that of visible light, between light rays, have an energy dose as low as approximately 10% of that of the Ultraviolet (UV) rays, but it has a significant thermal effect and if it is absorbed in a substance, the IRs are released in the form of heat to result in an increase in temperature and is therefore called a thermal beam. Therefore, between the light rays that pass through a front glass or side glass of an automobile, if the IRs that have significant thermal effect are isolated, the heat insulation effect increases and the temperature increase inside of the car can be deleted. As such, a crystal that isolates IR that have significant thermal effect, for example, a crystal that cuts thermal rays, has been commercialized. The glass that cuts thermal rays is developed for the purpose of isolating direct sunlight and is obtained by forming a coating of multiple layers of metal / metal oxide on the surface of a glass plate by evaporation of metal, espurreado or similar. However, a multi-layer coating is susceptible to scratches from the outside and lower in chemical resistance, so a method has been used to obtain a laminated glass by laminating an interlayer film of a plasticized polyvinyl butyral resin film or the like. However, the glass that cuts thermal rays has problems in that the glass is expensive, it deteriorates in the transparency (visible light transmittance) due to the thick thickness of the multilayer coating, and it is highly colored due to the absorption in a region of visible light. In addition, there are other problems that the adhesion between the multilayer coating and the interlayer film is reduced to cause separation and bleaching of the interlayer film and that the multilayer coating layer inhibits the electromagnetic wave transmittance and interferes with the communication functions of a mobile telephone, a car navigation system, a remote garage control, an electronic toll booth collection system and the like. For example, patent document No. 1 and patent document No. 2 propose a laminated glass obtained by inserting a polyester film on which a thin film of a metal and / or metal oxide is formed or evaporated between sheets of plasticized polyvinyl butyral resin. However, these laminated crystals have a problem in the adhesion between plasticized polyvinylbutyral resin sheets and the polyester film that they result not only in interface separation but also in electromagnetic wave transmittance insufficiency. In addition, the patent document No. 3 describes a method for obtaining electromagnetic wave transmittance by dispersing metal oxide having heat insulation property in the interlayer film. However, laminated glass comprising an interlayer film for a laminated glass obtained by the method described has a problem that the laminated glass changes color to yellow to reduce the transmittance of visible light after a durability test to light in some cases and therefore it is expected that laminated glass is hardly allowed to be used as a front glass for automobile whose visible light transmittance is regulated at the lower limit. Patent Document No. 1: Japanese publication Kb ou Sho-61-52093 Patent Document No. 2: Japanese publication Kb ai Sho-64-36442 Patent Document No. 3 Japanese publication Kbkai 2001- 302289 DESCRIPTION OF THE INVENTION Problems that The invention has to be solved in view of the aforementioned state of the art, the present invention has the purpose of providing a interlayer film for a laminated glass that is excellent in transparency, property of heat insulation and electromagnetic wave transmittance in the case of being used for a laminated glass and does not deteriorate in the transmittance of visible light and the initial optical properties even after a test of durability to light and provides a laminated glass comprising the interlayer film for a laminated glass. Means for resolving the object The present invention is directed to an interlayer film for a laminated glass comprising at least each of the heat insulation layer and the UV insulation layer. Hereinafter, the present invention will be described in detail. An interlayer film for laminated glass of the present invention comprises at least one of the layers of a heat insulation layer and a UV insulation layer. Based on the results of intensive investigations, the inventors of the present invention have found that a cause of decrease in visible light transmittance of a laminated glass comprising an interlayer film containing a metal oxide as heat insulation dispersed in the same after a test of Durability to light is attributed to the chemical change of the metal oxide itself by UV rays and the matrix affected by the chemical change. That is, it is assumed that when the light comes directly from the outside, the heat insulation layer of the interlayer film for a laminated glass of the present invention changes color to cause a decrease in the visible light transmittance due to the light with a wavelength in the UV region that has a high energy. However, since the interlayer film for a laminated glass of the present invention comprises the aforementioned UV insulation layer having a function of isolating the UV rays, the UV rays of the light arriving in the insulation layer of the The aforementioned heat from the side of the UV insulation layer is significantly reduced and therefore the color change of the heat insulation layer mentioned above by the UV rays can be suppressed. The laminated glass obtained by using an interlayer film for a laminated glass of the present invention is suppressed from reducing the transmittance of visible light after the durability test to light and does not deteriorate in the initial optical qualities. The interlayer film for a laminated glass of the present invention preferably comprises three layers composed of at least one layer of heat insulation and UV insulation layers formed on both sides of the aforementioned heat insulation layer. With respect to the interlayer film for a laminated glass with such structure, even if the light comes from both sides of the heat insulation layer, the light enters while it is transmitted through the aforementioned UV insulation layers, the UV rays are considerably reduced and therefore the color change of The aforementioned heat insulation layer to be yellow can be avoided. Accordingly, the transmittance of visible light is not reduced even after the light durability test and the initial optical qualities do not deteriorate in the case where the interlayer film for a laminated glass with the aforementioned structure is used for Get a laminated glass. With respect to the interlayer film for a laminated glass of the present invention, the aforementioned heat insulation layer is preferable to have an electromagnetic wave insulation capacity of 10 dB or less at a frequency of 0.1 MHz to 26.5 GHz in the case where the heat insulation layer is inserted between two plates of crystals selected from a group consisting of clear crystals, green crystals, high heat radiation absorption crystals and UV absorption crystals to obtain a laminated crystal. If it exceeds 10 dB, the The electromagnetic wave transmittance of the laminated glass comprising the interlayer film for a laminated glass of the present invention can be reduced in some cases. The aforementioned heat insulation layer preferably has a turbidity of 1.0% or less in the form of the above-mentioned laminated glass. If it exceeds 1.0%, the transparency of the laminated glass comprising the interlayer film for a laminated glass of the present invention may be so low as to cause adverse effects on practical use in some cases. The aforementioned heat insulation layer inserted into the above-mentioned laminated glass preferably has a visible light transmittance of 70% or greater. If it is less than 70%, the transparency of the laminated glass comprising the interlayer film for the laminated glass of the present invention may be so low as to cause adverse effects on practical use in some cases. The aforementioned visible light transmittance can be measured, for example, by measuring the visible light transmittance (Tv) of the laminated glass to light rays with wavelength 380 to 780 nm according to the transmittance test method , reflectance and emission of non-flat crystals and evaluation of the solar heat gain coefficient, of JIS R 3106 (1998), by a recording spectrophotometer (manufactured by Hitachi Ltd., U 4000).

The aforementioned heat insulation layer inserted. in the aforementioned laminated glass it preferably has a solar light transmittance of 85% or less of the aforementioned visible light transmittance in a wavelength region of 300 to 2100 nm. If it exceeds 85%, the heat insulation property of the laminated glass comprising the interlayer film for a laminated glass of the present invention is sometimes insufficient. The aforementioned sunlight transmittance can be measured, for example, by measuring the solar light transmittance Ts) of the laminated glass to light rays with a wavelength of 300 to 2100 nm according to the transmittance test method , reflectance and emission of non-flat crystals and evaluation of the solar heat gain coefficient, of JIS R 3106 (1998), by means of a recording spectrophotometer (manufactured by Hitachi Ltd., U 4000). The aforementioned heat insulation layer preferably contains a transparent resin and a heat insulating agent. The aforementioned transparent resin is not particularly limited and, for example, resins known as transparent resins for interlayer films for a laminated glass can be illustrated. Practical examples of the resin are polyvinyl acetal resin; polyurethane resin; ethylene-vinyl acetate resin; acrylic copolymer resin that comprises acrylic acid, methacrylic acid, or its derivatives as mixed units; and vinyl chloride-ethylene-glycidyl methacrylate copolymer resin. These resins can be easily produced by known or similar methods. As the transparent resin mentioned above, the polyvinylacetal resin is preferable. The aforementioned polyvinylacetal resin is not particularly limited and is obtained by acetalization of polyvinyl alcohol with an aldehyde. As the polyvinyl alcohol mentioned above, a polyvinyl alcohol can generally be used by saponification of polyvinyl acetate and having a degree of saponification of 80 to 99.8 mol%. In the case where the aforementioned polyacetal resin is used for the present invention, the molecular weight and molecular weight distribution are not particularly limited, however in terms of the formability and physical properties, the lower limit of the degree of polymerization of the polyvinyl alcohol resin to be a starting material is preferably 200 and the upper limit is preferably 3,000. If it is less than 200, the penetration resistance of the laminated glass to be obtained tends to be decreased and if it exceeds 3,000, the formability of the resin film tends to be worsened and the firmness of the resin film tends to be too high, which results in the ability to lower processing. The lower limit is preferably 500 and the upper limit is most preferably 2,000. As the aforementioned aldehyde, the aldehydes with 1 to 10 carbon atoms can be used and examples of aldehydes are n-butylaldehyde, isobutylaldehyde, n-varelaldehyde, 2-ethylbutylaldehyde, n-hexylaldehyde, n-octalylaldehyde, n-nonylaldehyde, n ~ Decylaldehyde, formaldehyde, acetaldehyde, and benzaldehyde. Among them, n-butylaldehyde, n-hexylaldehyde, and n-varealdehyde are preferred and butylaldehyde with 4 carbon atoms is particularly preferred. As the aforementioned polyvinyl acetal, the polyvinyl butyral obtained by acetalization with butylaldehyde is preferable. In addition, these acetal resins can be combined and mixed appropriately under consideration of the physical properties required. In addition, the co-polyvinylacetal resin obtained by combining aldehyde at the acetalization time can be used appropriately. The lower limit of the degree of acetalization of the aforementioned polyvinyl acetal resin for use for the present invention is preferably 40% and the upper limit is 85%, and the lower limit is most preferably 60% and the upper limit is most preferably 75% . The aforementioned heat insulation layer preferably contains a plasticizer.

As the aforementioned plasticizer, any plasticizer which is commonly used for the interlayer film for a laminated glass can be used without any particular limit and examples of the plasticizers are organic type plasticizers such as esters of organic monobasic acid, esters of polybasic organic acid; and organophosphoric acid type plasticizers such as organophosphoric acid type, organophosphorus acid type. The plasticizers can be used alone or two or more of them can be used in combination and in consideration of the compatibility of the aforementioned transparent resin, these plasticizers are used appropriately according to the types of the resin. The aforementioned organic monobasic acid ester type plasticizers are not particularly limited and examples thereof may include glycol type esters obtained by reaction of glycols such as triethylene glycol, tetraethylene glycol, tripropylene glycol or the like and a monobasic organic acid such as butyric acid. , isobutyric acid, caproic acid, 2-ethylbutyric acid, heptylic acid, n-octyl acid, 2-ethylhexyl acid, pelargonic acid (n-nonyl acid), or decyl acid. Among them, the triethylene glycol monobasic organic acid esters such as triethylene glycol dicaproic acid ester, 2-2- acid ester Triethylene glycol ethylbutyric acid, triethylene glycol di-n-octyl ester and triethylene glycol di-2-ethylhexyl ester are preferable for use. The aforementioned polybasic organic ester type plasticizers are not particularly limited and examples thereof may include esters of polybasic organic acids such as atypical acid, sebacic acid, or acelaic acid and straight or branched chain alcohols with 4 to 8 carbon atoms . Among them, dibutyl sebacic acid ester, dioctylacetic acid ester, dibutylcarbitol adipic acid ester are preferable. The aforementioned organic phosphoric acid type plasticizers are not particularly limited and examples thereof may include tributoxyethyl phosphate, isodecylphenyl phosphate, triisopropyl phosphate and the like. Practical examples of the aforementioned plasticizers are triethylene glycol diethylbutyrate, triethylene glycol diethylhexoate, triethylene glycol dibutylsebacate and the like. In the aforementioned heat insulation layer, the addition amount of the aforementioned plasticizers is not particularly limited and for example, in the case where the transparent resin before mentioned is polyvinyl acetal resin, the lower limit is preferably 20 parts by weight and the upper limit is preferably 100 parts by weight to 100 parts by weight of the polyvinylacetal resin. If it is less than 20 parts by weight, the penetration resistance is sometimes reduced and if it exceeds 100 parts by weight, plasticizer runoff is likely to occur which causes deterioration of the transparency and adhesion of the heat and distortion insulation layer significant optics of the laminated glass to be obtained. The lower limit is preferably 30 parts by weight and the upper limit is most preferably 60 parts by weight. The aforementioned heat insulation layer preferably contains an adhesion adjusting agent. The aforementioned adhesion adjusting agent is not particularly limited and preferably an alkali metal salt and / or an alkaline earth metal salt is to be used. The above-mentioned alkali metal salt and alkaline earth metal salt or are particularly limited and examples thereof are potassium, sodium, magnesium salts and the like. An acid forming the salt mentioned above is not particularly limited and examples of the acid include organic acids, for example carboxylic acids such as octyl acid, hexyl acid, butyric acid, acetic acid and formic acid and inorganic acids such as hydrochloric acid, nitric acid .

Among the above-mentioned alkali metal salts and / or alkaline earth metal salts, the alkali metal salts and alkaline earth metal salts of organic acids having 2 to 16 carbon atoms are preferable and the magnesium carboxylate having 2 to 16 atoms of carbon and potassium carboxylate having 2 to 16 carbon atoms are also preferable. The aforementioned magnesium carboxylate or potassium carboxylate of organic acids having 2 to 16 carbon atoms are not particularly limited and, for example, magnesium acetate, potassium acetate, magnesium propionate, potassium propionate, Magnesium 2-ethylbutanate, potassium 2-ethylbutanate, magnesium 2-ethylhexatate, and potassium 2-ethylhexate preferably. These salts can be used alone or two or more of them are used in combination. The above-mentioned addition amount of the alkali metal salt and / or alkaline earth metal salt is not particularly limited in the aforementioned heat insulation layer and, for example, in the case den where the aforementioned transparent resin is resin polyvinyl acetal, the lower limit of the addition amount is 0.001 parts by weight and the upper limit is 1.0 parts by weight to 100 parts by weight of the polyvinyl acetal resin. If it is less than 0.001 parts by weight, the resistance to adhesion can possibly be reduced in the circumferential part of the interlayer film in a highly humid atmosphere and if it exceeds 1.0 parts by weight, the adhesion resistance becomes too low and the transparency of the interlayer film is lost in some cases. The lower limit is most preferably 0.01 parts by weight and the upper limit is preferably 0.2 parts by weight. The aforementioned heat insulation agent is not particularly limited if it is a substance capable of giving heat insulating property to the heat insulating layer and for example, fine indium oxide particles purified with tin (hereinafter referred to as fine particles of ITO) are preferable for use. The aforementioned ITO fine particles are preferable to be finely and uniformly dispersed in the aforementioned heat insulation layer to sufficiently exhibit the effect. In practical terms, being finely and uniformly dispersed means the state that the fine ITO particles are dispersed without causing agglomeration to the extent that the decrease in transparency due to the addition of fine particles of ITO can not be confirmed in the case of observing with the eyes the aforementioned heat insulation layer, in other words, the The degree of scattering of light by fine ITO particles hardly takes place in the region of visible light. Most particularly, the aforementioned fine ITO particles preferably have an average particle diameter of 80 nm or less. If the average particle diameter exceeds 80 nm, the dispersion of visible light by the fine particles of ITO becomes significant and the transparency of the interlayer film for the laminated glass of the present invention to be obtained may possibly deteriorate. As a result, in the case of using the film for a laminated glass, the turbidity may worsen and, for example, the highly advanced transparency required for a car front glass or the like can not be obtained. The fine particles of ITO mentioned above are preferably dispersed in order to satisfy one or fewer particles with a particle diameter of 100 nm or greater per 1 μm2. This means the state of dispersion that in the case where the aforementioned heat insulation layer is photographed and observed with a transmission electron microscope, no fine particle of ITO with a diameter of 100 nm or greater is observed or when the particles ITO fine particles with a particle diameter of 100 nm, or greater are observed and if a fine ITO particle with a particle diameter of 100 nm or greater is fixed in the center of a 1 μm2 frame, no ITO particle with a particle diameter of 100 nm or greater is observed inside the frame. Accordingly, if the interlayer film for a laminated glass of the present invention is used for a laminated glass, the laminated glass is provided with a low haze and is excellent in transparency and the complete interlayer film for a laminated glass of the present invention is provided with high heat insulation property. The observation with the transmission electron microscope can be carried out, for example, at an acceleration voltage of 100 kV by the use of a transmission electron microscope model H-7100 FA manufactured by Hitachi Ltd. The amount of addition of the ITO fine particles mentioned above in the aforementioned heat insulation layer is not particularly limited and for example, in the case where the clear resin is polyvinylacetal resin, the lower limit is preferably 0.1 parts by weight and the upper limit is preferably 3.0 parts by weight up to 100 parts by weight of the polyvinylacetal resin Si is less than 0.1 parts by weight, sufficient IR cutting effect can not be obtained and if it exceeds 3.0 parts by weight, the transparency to visible light is reduced and the turbidity increases in some cases. In general, the fine particles of ITO mentioned above are uniformly dispersed in a solvent organic and then added to the aforementioned polyvinylacetal resin to finely disperse the particles in the aforementioned polyvinyl acetal resin, and it is preferable that a plasticizer of a size similar to the aforementioned plasticizer to be used for the plasticization of the The aforementioned polyvinyl acetal resin is used as a main dispersant for uniform dispersion. The heat insulation layer preferably also contains a dispersion stabilizer. As the aforementioned dispersion stabilizer, for example, a coordination compound comprising at least one type of atom selected from the group consisting of nitrogen, phosphorus, and chalcogen-type atom group as an ITO coordination atom is preferable. . The coordination compound is not completely limited and examples of the coordination compound are surfactants such as carboxylate salts, sulfonic acid salts, sulfuric acid ester salts, phosphoric acid ester salts, polymer type macromolecules, and macromolecules of condensed polymer type; nonionic surfactants such as ethers, esters, ester-ethers, and nitrogen-containing compounds; cationic surfactants such as primary to tertiary amine salts, quaternary ammonium salts and polyethylene polyamide derivatives and amphoteric surfactants such as carboxybetaine, salts of aminocarboxylic acid, sulfobetaine, esters of aminosulfuric acid, and imidazoline. Among them, at least one of a selected group consisting of ester compounds of the sulfuric acid type, phosphoric acid ester type compounds, ricinoleic acid, polyricinoleic acid, polycarboxylic acid, surfactants of the polyhydric alcohol type, polyvinyl alcohol and polyvinyl butyral is particularly preferable for use since it can efficiently prevent the agglomeration of fine ITO particles. The amount of addition of the aforementioned dispersion stabilizer is not particularly limited and for example, in the case where the clear resin is polyvinylacetal resin, the lower limit is preferably 0. 001 parts by weight and the upper limit is preferably 5. 0 parts by weight to 100 parts by weight of polyvinylacetal. If it is less than 0. 001 parts by weight, the effect of the dispersion stabilizer is hardly obtained. If it exceeds 5. 0 parts by weight, foaming occurs at the time of the interlayer film formation or foaming occurs and the adhesion resistance between the interlayer film and a crystal becomes too high in the case of the formation of a laminated glass. The lower limit is most preferably 0. 05 parts by weight and the upper limit is most preferably from 1.0 parts by weight, to 1.0 parts by weight of the fine ITO particles.

With respect to the selected heat insulation layer, the turbidity can be further improved by adding a chelating agent and a compound having at least one carboxyl group to the main dispersant. In this case, the chelating agent and the compound having at least one carboxyl group can be mixed with the main dispersant or added separately to the polyvinylacetal resin without mixing with the main dispersant. The aforementioned chelating agent is not particularly limited and EDTAs and ß-diketones such as acetylacetone, benzoyltrifluoroacetone, dipivaloylmethane and those having good compatibility with the plasticizer and polyvinylacetal resin can be used illustratively. Among them, the aforementioned ß-diketones are preferable and acetylacetone is particularly preferable. The addition effect of these chelating agents is considered so that the agents are coordinated with the fine particles of ITO mentioned above and therefore, the fine particles of ITO are prevented from agglomerating to give a good dispersion state and result of turbidity. The amount of addition of the aforementioned chelating agent is not particularly limited, and for example, in the case where the aforementioned transparent resin is polyvinylacetal resin, the lower limit is preferably of 0. 001 parts by weight and the upper limit is preferably from 2 parts by weight to 100 parts by weight of polyvinylacetal resin. If it is less than 0.001 parts by weight, the effect of the addition is hardly expected and if it exceeds 2 parts by weight, foaming can occur at the time of film formation or foaming may occur at the time of production of a laminated glass . The lower limit is most preferably 0. 01 parts by weight and the upper limit is most preferably 1 part by weight. The above-mentioned compound having one or more carboxyl groups is not particularly limited and, for example, aliphatic carboxylic acids, aliphatic dicarboxylic acids, aromatic carboxylic acids, aromatic dicarboxylic acids, and hydroxy acids can be illustrated. Particularly, benzoic acid, phthalic acid, salicylic acid, ricinoleic acid or the like. Among them, the aliphatic C2 to Ci8 carboxylic acids are preferably used and the aliphatic C2 to C? 0 carboxylic acids are most preferably used. Practically, acetic acid, propionic acid, n-butyric acid, 2-ethylbutyric acid, 2-ethylbutyric acid, n-hexanoic acid, 2-ethylhexanoic acid, and n-octanoic acid can be used illustratively. The amount of addition of the aforementioned compound having one or more carboxylic groups is not particularly limited and for example, in the case where the resin above-mentioned transparent is polyvinylacetal resin, the lower limit is preferably 0.001 parts by weight and the upper limit is preferably 2 parts by weight to 100 parts by weight of polyvinylacetal resin. If it is less than 0.001 parts by weight, the effect of the addition is hardly expected and if it exceeds 2 parts by weight, it may possibly occur color change of the heat insulation layer and the adhesion resistance of the glass and the Heat insulation can be reduced. The lower limit is most preferably 0.01 parts by weight and the upper limit is most preferably 1 part by weight. The aforementioned heat insulation layer preferably contains an antioxidant. The aforementioned antioxidant is not particularly limited and, for example, as a phenol type, 2,6-di-tert-butyl-p-cresol (BHT) (manufactured by Sumitomo Chemical Co., Ltd., Sumilizer BHT) can be illustrated. , tetrakis- [methylene-3- (3 ', 5'-di-tert-butyl-4' -hydroxyphenyl) propionate] -methane (manufactured by Ciba-Geigy Corp., Irganox 1010). These antioxidants can be used alone or two or more of them can be used in combination. The amount of addition of the aforementioned antioxidant is not particularly limited and for example, in the case where the aforementioned transparent resin is polyvinylacetal resin, the lower limit is preferably 1.01 parts by weight and the upper limit is preferably 5.0 parts by weight to 100 parts by weight of polyvinylacetal resin. If it is less than 0.01 parts by weight, the oxidation prevention effect is hardly expected and if it exceeds 5.0 parts by weight, foaming may occur at the time of film formation of the interlayer film or foaming may occur at the time of production. of a laminated glass. In the interlayer film for a laminated glass of the present invention, the aforementioned UV insulation layer preferably has a UV transmittance of 60% or less in accordance with SAE J1796 in the case where the UV insulation layer is inserted between two plates of crystals selected from a group consisting of clear crystals, green crystals, high heat radiation absorption crystals and UV absorption crystals to obtain a laminated glass. If it exceeds 60% the visible light transmittance is reduced after a durable test to light in case of a laminated glass comprising the UV insulation layer and the laminated glass can not be used for a car front glass whose transmittance of Visible light has a lower permissible limit and may not be used in a practical way. It is most preferably 30% or less or even most preferably 10% or less.

The aforementioned UV isolation layer preferably contains clear resin and a UV cutting agent. The aforementioned transparent resin is not particularly limited and for example, those similar to the transparent resin for the aforementioned heat insulation layer may be illustrative. The aforementioned UV cutting agent is preferably at least one UV absorber selected from the group consisting of metal type, metal oxide type, benzotriazole type, benzophenone type, triazine type, tenzoate type, malonic acid ester type, and anilide type of oxalic acid. These UV absorbers can be used alone or two or more of them are used in combination. The aforementioned metal-type UV absorbent is not particularly limited and examples of agents include ultrafine particles of platinum, fine particles obtained by coating the surface of ultrafine particles of platinum with silica, ultrafine particles of palladium and fine particles obtained by coating the surface of ultrafine particles of palladium with silica. The aforementioned metal oxide type UV absorber is not particularly limited and examples of the agent include zinc oxide and / or titanium oxide, cerium oxide and the like. Among them, zinc oxide and / or titanium oxide is preferable.

The aforementioned metal oxide type UV absorber is preferably coated with an insulating metal oxide on the surface to suppress deterioration of the interlayer film for a laminated glass of the present invention. The aforementioned metal oxide insulation is not particularly limited and for example, those having a band gap energy of 5.0 eV or greater such as silica, alumina and zirconia are illustrated and among them, silica is preferably used. As the aforementioned silica-coated metal oxide-type UV absorber, useful examples thereof may be those which are commonly marketed and those which are obtained by treating the aforementioned UV-type metal oxide absorbent with a reagent capable of forming a layer of silica on the surface by reaction with the surface of the agent. The aforementioned reagent capable of forming a silica layer on the surface is not particularly limited and can be used in an illustrative manner, for example, tetraethoxysilane, silicon chloride or the like. In addition, the aforementioned metal oxide type UV absorber is preferably coated with uri hydrolysable organosilicon compound on the surface. As the metal oxide-type UV absorber coated with the hydrolysable organosilicon compound on the surface, useful examples thereof may include those which are commonly marketed and those which are obtained by treating the surface of the aforementioned metal oxide type UV absorber with a silane coupling agent. In addition, the aforementioned metal oxide-type UV absorbent is preferably coated with a silicone-type compound on the surface. As the metal oxide-type UV absorber coated with the silicone-type compound on the surface, useful articles thereof may include those which are commonly marketed and those which are obtained by treating the surface of the oxide-type UV absorber. of aforementioned metal with methicone, dimethicone and the like. As the aforementioned benzotriazole UV absorber, examples thereof include those of the benzotriazole type such as 2 - (2'-hydroxy-5'-methylphenyl) -benzotriazole (manufactured by Ciba-Geigy Corp., Tinuvin P ), 2- (2'-hydroxy-3 ', 5'-di-tert-butylphenyl) benzotriazole (manufactured by Ciba-Geigy Corp., Tinuvin 320), 2- (2'-hydroxy-3'-tert-butyl) -5'-methylphenyl) -5-chlorobenzotriazole (manufactured by Ciba-Geigy Corp., Tinuvin 326), and 2- (2'-hydroxy-3 ', 5'-di-amylphenyl) benzotriazole (manufactured by Ciba-Geigy Corp., Tinuvín 328); and those of the hindered amine type such as LA-57 manufactured by Adeka Aarhus Chemical Co., Ltd. As the aforementioned benzofonone UV absorbent, eg, em pounds thereof may include octabenzone (manufactured by Ciba-Gegy Corp., Chimassorb 81). ).

As the aforementioned triazine-type UV absorber, examples thereof can include 2- (4,6-dif-enyl-1, 3, 5-triazin-2-yl) -5- [(hexyl) oxyl] -phenol (manufactured by Ciba-Geigy Corp., Tinuvin 1577 FF). As the aforementioned benzoate UV absorber, examples thereof may include 2,4-di-tert-butylphenyl-3,5-di-tert-butyl-4-hydroxybenzoate (manufactured by Ciba-Geigy Corp., Tinuvin 120 ) As the aforementioned malonic acid ester type UV absorbent, commercialized examples thereof may include propanedioic acid, [(4-methoxyphenyl) -methylene-dimethyl ester (manufactured by Clariant Inc., Hostavin PR-25). As the oxidic acid anilide type UV absorber, commercialized examples thereof may include 2-ethyl-2'-ethoxy-xanilide (manufactured by Clariant Inc., Sanduvor VSU). The UV absorbers of the aforementioned malonic ester and oxalic acid anilide type have a UV absorption region in UV-B and in consideration of that the wavelength of UV rays causing deterioration of several transparent resins is in 300 at 320 nm, it can be said that these agents are UV absorbers suitable for protection of the resins against UV rays. In addition, since the molar absorption is extremely high, compared to conventionally known UV absorber, the amount of UV absorption for the same amount of addition is much higher and furthermore since the molecular weight is low, the amount of addition You can save to give a low cost.

As the aforementioned UV cutting agent, the use of a malonic acid ester type UV absorber and / or a type of oxalic acid anilide mentioned above can maintain the decrease in visible light transmittance of the interlayer film for a crystal laminate of the present invention in the prescribed range or shorter after the light durability test, which will be described later. The amount of addition of the aforementioned UV cutting agent is not particularly limited and the lower limit is preferably 0.01 parts by weight and the upper limit is preferably 5.0 parts by weight to 100 parts by weight of the transparent resin. If it is less than 0.01 parts by weight, the effect of UV absorption is hardly obtained and if it exceeds 5.0 parts by weight, a problem of deterioration of the weathering resistance of the resin may occur in some cases. The lower limit is most preferably 0.05 parts by weight and the upper limit is most preferably 1.0 parts by weight. The aforementioned UV isolation layer may further contain, for example, an antioxidant and various types of photostabilizers as other additives to prevent deterioration by heat in an extruder. In addition, based on the need, the modified silicone oil and a surfactant as an adhesion resistance adjustment, a Flame retardant agent, an antistatic agent, an adhesion resistance adjusting agent, a moisture resistance agent, a thermal ray reflectance agent and a thermal ray absorber may be added as additives. The aforementioned photosensitizers are not particularly limited and may include those of the hindered amine type, for example, Adeka Stab LA-57 manufactured by Asahi Denka Co., Ltd. The aforementioned modified silicone oil is not particularly limited and may include, example, epoxy modified silicone oil, ether modified silicone oil, ester modified silicone oil, amine modified silicone oil and carboxyl modified silicone oil described in Japanese publication Kokoku Sho-55-29950. These modified silicone oils are generally liquids obtained by reaction of polysiloxanes with compounds for modification. The aforementioned modified silicone oils can also be used alone and two or more of them are used in combination. The lower limit of the molecular weight of the aforementioned modified silicone oil is preferably 800 and the upper limit is preferably 5,000. If it is less than 800, the location on the surface is sometimes reduced and if it exceeds 5,000, compatibility with the resin it becomes inferior to result in oil runoff to the surface of the film and decrease in the resistance to adhesion to the glass. The lower limit is most preferably 1,500 and the upper limit is most preferably 4,000. The amount of addition of the modified silicone oil is not particularly limited and, for example, in the case where the aforementioned transparent resin is polyvinylacetal resin, the lower limit is preferably 0.01 parts by weight and the upper limit is preferably 0.2 parts. by weight to 100 parts by weight of the polyvinylacetal resin. If it is less than 0.01 parts by weight, the effect to avoid bleaching due to unit absorption is hardly obtained and if it exceeds 0.2 parts by weight, the compatibility with the resin becomes lower to result in oil dripping to the surface of the film and reduce the resistance to glass adhesion. The lower limit is most preferably 0.03 parts by weight and the upper limit is most preferably 0.1 parts by weight. The aforementioned surfactant is not particularly limited and, for example, sodium laurate and alkylbenzenesulfonic acid may be illustrative. The interlayer film for a laminated glass of the present invention comprising at least one of the heat insulation layer and the UV insulation layer is that a decrease in visible light transmittance is preferably 1.0% or less in accordance with JIS Z 8722 and JIS R 3106 (1998) after the interlayer film is inserted between two layers of crystals selected from a group consisting of clear crystals, green crystals, high heat radiation absorption crystals and UV absorption crystals to obtain a laminated crystal; and the 100-hour Super Xenon radiation test is carried out for the laminated glass. If it exceeds 1.0%, the decrease in visible light transmittance after the durability test to light is too significant and results in a problem for practical use. In addition, the interlayer film for a laminated glass of the present invention comprising at least each of the heat insulation layer and the UV insulation layer is that a decrease in visible light transmittance is preferably 3.0% or more. minor measure in accordance with JIS Z 8722 and JIS R 3106 (1998) after the interlayer film is inserted between two plates of crystals selected from the group consisting of clear crystals, green crystals, high thermal radiation absorption crystals and crystals of UV absorption to obtain a laminated glass; and the Super 300-hour radiation test UV is carried out for laminated glass. If it exceeds 3.0% the decrease in visible light transmittance after the durability test to light is too significant and results in a problem for practical use. The upper limit is most preferably 2.0% and very preferably even 1.0%. Further, in the case where a laminated glass is produced by using the interlayer film for a laminated glass of the present invention, the ratio of increase of the yellow index (YI) to the alteration of the value ratio of b * of the CIÉ color system are preferably low after the ratio of 100 hours Super Xenon and the radiation test of 300 hours Super UV. If the alteration ratios of the yellow index (YI) and the b * value of the CIÉ color system are greater, the heat insulation agent of the fine particles of ITO and / or transparent resin contained in the insulation layer aforementioned deteriorates considerably and the optical properties, mechanical properties and physical properties of the interlayer film for a laminated glass of the present invention sometimes can not be maintained after the aforementioned test. The thickness of the interlayer film for a laminated glass of the present invention is not particularly limited and in terms of the limits more low of the necessary penetration resistance and weather resistance, the lower limit is preferably 0.3 mm and the upper limit is preferably 0.8 mm. Based on the need for improvement of penetration resistance or the like, the interlayer film for a laminated glass of the present invention and an interlayer film for a laminated glass other than the first one may be laminated for combination use. A method for producing the interlayer film for a laminated glass of the present invention is not particularly limited and there are methods, for example, involving the formation of the aforementioned heat insulation layer and the UV insulation layer in the form of sheet by a conventional film forming method such as an extrusion method, calendering method, a pressing method, and sheets obtained by rolling and a more preferable method is an extrusion method involving extrusion in biaxial direction and in accordance with that method, the turbidity of the interlayer film for a laminated glass to be obtained has to be further improved. The method for obtaining the aforementioned heat insulation layer is not particularly limited, however a method that involves adding a dispersion containing the heat insulation agent such as Fine particles of ITO uniformly dispersed in an organic solvent to the transparent resin and then kneading the mixture can be used generally. The organic solvent for the aforementioned dispersion is not particularly limited and a plasticizer of a type similar to the plasticizer to be used is preferable. The apparatus to be used for mixing the fine particles of ITO and the organic solvent is not particularly limited and, for example, a planetary type stirring apparatus, a wet mechanochemical apparatus, a Henshel mixer, a homogenizer, an apparatus Ultrasonic radiation and the like are commonly used. The apparatus to be used for kneading is not particularly limited and, for example, an extruder, a plastgraph, a kneader, a Bumbury mixer, a calendering roll or the like can be illustrative. Among them, in terms of continuous production, the extruder is preferable. The method for obtaining the aforementioned UV insulation layer is not particularly limited and in general, the method for adding a UV cutting agent instead of the ITO fine particle heat insulating agent and the like in the aforementioned method to obtain the heat insulation layer. Since the interlayer film for a laminated glass of the present invention comprises at least each of the excellent heat insulation layer in transparency, heat insulation and electromagnetic wave transmittance property and excellent UV insulation layer in UV insulation efficiency, the use of the interlayer film for a laminated glass of the present invention makes it possible to obtain an excellent laminated glass in transparency , property of heat insulation and electromagnetic wave transmittance and poorly deteriorated in the initial optical properties even after a light stability test. The present invention also provides a laminated glass comprising an interlayer film for a laminated glass of the present invention. With respect to the laminated glass of the present invention, in general, the interlayer film for a laminated glass of the present invention is preferable to be arranged in such a way that the UV insulation layer is on the incident side of external light in relation to the heat insulation layer. As described above, the weather resistance of the aforementioned heat insulation layer is rather considerably affected by the weather resistance of the heat insulating agent such as fine particles of ITO contained therein. Therefore, when the external light rays go directly into the heat insulation layer before mentioned, it can be considered that the heat insulation agent such as the aforementioned ITO fine particles and the dispersion stabilizer produce a chemical change due to the light rays with wavelength in the UV wavelength region that it has high energy, and at the same time it affects even the resin matrix in the peripheral parts which results in a decrease in the weather resistance. Accordingly, the arrangement of the aforementioned UV insulation layer on the incident side of external light rays in relation to the aforementioned heat insulation layer reduces the dose of the light rays with wavelength in the region of UV wavelength entering the aforementioned heat insulation layer and therefore prevents deterioration of the weather resistance of the heat insulation layer. As a result, the deterioration of the weather resistance of the laminated glass of the present invention can be suppressed. The crystal to be used for the laminated glass of the present invention is not particularly limited and can be used illustratively, for example, a transparent plate crystal commonly used. Particularly, a crystal of thermal radiation absorption with a total transmittance of 65% or less in the region of Wavelength of 900 to 1,300 nm is preferable. It is due to the IR-cutting property of the fine particles of ITO that it is better in a region of wavelength greater than 1,300 nm and relatively low in a region of wavelength of 900 to 1,300 nm and therefore, a combination of interlayer film for a laminated glass of the present invention with the aforementioned thermal radiation absorption glass can reduce the transmittance of solar radiation and increase the cut-off ratio of solar radiation for the same visible light transmittance compared to a combination of the interlayer film with clear crystals. The laminated glass of the present invention may include the combination of the interlayer film for a laminated glass of the present invention and a plastic film. In particular, for example, combinations of the interlayer film for a laminated glass of the present invention with transparent plastic films of polycarbonates, poly (methyl methacrylate), and the like which do not have a metal coating layer are illustrative. A laminated glass is obtained by using the interlayer film for a laminated glass of the present invention and is therefore excellent in transparency, property of heat insulation and electromagnetic wave transmittance and hardly causes deterioration of the initial optical properties even after the stability test to the light and additionally, since the laminated glass comprises the plastic film, crime prevention and penetration properties can be improved. In addition, a rigid body other than a crystal, for example, a metal, an inorganic material, or the like can be used as a vibration suppressing material by laminating it onto the interlayer film for a laminated glass of the present invention. The laminated glass of the present invention can be used for a car windshield glass, a side glass, glass parts for vehicles such as aircraft and trains, window panes for buildings and the like. Further, as the interlayer film for a laminated glass, the interlayer film of multi-layer type for a laminated glass having a multi-layer structure can be used and, for example, the interlayer film of multi-layer type for A laminated glass can be used as a multi-layered sound insulation interlayer film for laminated glass and functional laminated glass. Effect of the invention Since the interlayer film for a laminated glass of the present invention comprises at least each layer of the heat insulation layers and the UV insulation layers, the interlayer film for a glass Laminate is excellent in transparency, heat insulation property and electromagnetic wave transmittance in the case of being used for laminated glass and hardly causes decrease of visible light transmittance even after a durable test to light and does not deteriorate the initial optical quality. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the examples, however the present invention is not limited to these examples. Example 1 (1) Synthesis of polyvinyl butyral 275 g of polyvinyl alcohol with an average degree of polymerization of 1, 700 and a degree of saponification of 99.2 mol% was added and dissolved in pure water, 2.890 g by heating. The reaction system was adjusted to be at 15 ° C and 201 g of hydrochloric acid at a concentration of 35% by weight and 157 g of n-butylaldehyde were subsequently added and kept at the same temperature to precipitate a reaction product. Then, the reaction system was maintained at 60 ° C for 3 hours to finish the reaction and then the reaction system was washed with an excess amount of water to wash unreacted n-butylaldehyde and the hydrochloric acid catalyst was neutralized with an aqueous sodium hydroxide solution, a widely used neutralization agent and subsequently the product The reaction medium was washed with excess water for 2 hours and dried to obtain a polyvinyl butyral resin in the white powder state. The polyvinyl butyral resin had an average degree of butyralization of 68.5 mol%. (2) Production of plasticizer mixed with UV cutting agent and antioxidant As an antioxidant, 0.8 parts by weight of 2,6-di-tert-butyl-p-cresol (BHT) (manufactured by Sumitomo Chemical Co., Ltd., BHT Sumilizer), and a UV absorber, 0.8 parts by weight of 2- (2'-hydroxy-3'-tert-butyl-5'-methylphenyl) -5-chlorobenzotriazole (manufactured by Ciba Geigy Corp., Tinuvin 326) , they were added to 40 parts by weight of triethylene glycol di-ethylenebutylate (3GO) and stirred and mixed until the mixture became a uniform and clear solution to obtain a plasticizer solution. (3) Production of plasticizer dispersed in ITO One part by weight of an ITO powder (manufactured by Mitsubishi Materials Corp.) was charged to 40 parts by weight of the obtained plasticizer solution and with the use of an acid ester salt polyphosphoric as a dispersant, the fine particles of ITO were dispersed in the plasticizer by a horizontal microsphere mill. After that, 0.2 parts by weight of acetylacetone was added to the solution while stirring to obtain a plasticizer solution dispersed with ITO. (4) Production of heat insulation layer 41 parts by weight of the plasticizer solution dispersed with ITO were added in 100 parts by weight of the obtained polyvinylbutyral resin and magnesium 2-ethylbutyrate in an appropriate amount was added thereto to adjust the Mg content to be 60 ppm in the complete system and the resulting mixture was sufficiently melted and kneaded with a mixing roller and molded by pressing at 150 ° C for 30 minutes with the use of an apparatus of press molding to obtain a heat insulation layer (A) with an average film thickness of 0.76 mm. (5) Production of UV insulation layer 40 parts by weight of the plasticizer solution were added to 100 parts by weight of the obtained polyvinylbutyral resin and magnesium 2-ethylbutyrate in an appropriate amount was added thereto to adjust the content of Mg to be 60 ppm in the total system and the resulting mixture was sufficiently melted and kneaded by a mixing roller and molded by pressing at 150 ° C for 30 minutes with the use of a press molding apparatus for obtain a UV insulation layer (A) with an average film thickness of 0. 76 mm. (6) Production of laminated glass An interlayer film for a laminated glass with a two-layer structure obtained by laminating each of the layers of a heat insulation layer (A) and a layer UV insulation (A) was interposed to fix transparent float glass plates (30 cm long x 30 cm wide x 2.5 mm thick) from both ends and the laminated body was put in a rubber bag and degassed at 2660 Pa (20 torr) degrees of vacuum for 20 minutes and then the laminated body was transferred to an oven while degassing and maintained at 90 ° C for 30 minutes and pressed under vacuum. The laminated glass was pressed together in a preliminary form in such a way that it was attached under pressure to the condition of 135 ° C and pressure of 1.2 MPa (12 kg / cm2) for 20 minutes in an autoclave to obtain a laminated glass. Example 2 A heat insulating layer (B) was produced in the same manner as Example 1, except that 2 parts by weight of ITO powder (manufactured by Mitsubishi Materials Corp.) was charged to 40 parts by weight of the plasticizer obtained in the production of plasticizer dispersed in ITO and the average film thickness of the heat insulation layer was changed to be 0.38 mm. A laminated glass was obtained in the same manner as in Example 1, except that the heat insulation layer (B) and the UV insulation layer (A) produced were used in the same manner as in example 1. Example 3 A layer of heat insulation (B) was produced in the same manner as Example 1, except that 0.2 parts by weight of 2, 6 di-tert-butyl-p-cresol (BHT) (manufactured by Sumitomo Chemical Co., Ltd., BHT Sumilizer) was used as an antioxidant and 0.2 parts by weight of 3- (2'-hydroxy-3'-tert-butyl-5 '-methylf-enyl-5-chlorobenzotriazole (manufactured by Ciba-Geigy Corp., Tinuvin 326) , was used as a UV absorber in the production of the UV insulation layer A laminated glass was obtained in the same manner as in Example 1, except that the heat insulation layer (A) produced therefrom was used. As in Example 1 and the UV isolation layer (B), Example 4 A laminated glass was obtained in the same manner as in Example 1, except that the heat insulation layer (B) produced was used. the same manner as in example 2 and the UV insulation layer (B) produced in the same manner as in example 3. Example 5 A laminated glass was obtained in the same manner as example 1, except that the film of Interlayer for a laminated glass with a three-layer structure was produced by forming the UV insulation layers (A) produced from it as in example 1 on both sides of the heat insulation layer (A) produced in the same manner as in example 1. Example 6 A laminated glass was obtained in the same manner as in Example 1, except that the interlayer film for a laminated glass with a three-layer structure was produced. by forming the UV insulation layers (A) produced in the same manner as in Example 1 on both sides of the heat insulation layer (B) produced in the same manner as in Example 1. Example 7 A laminated glass it was obtained in the same manner as Example 1, except that the interlayer film for a laminated glass with a three-layer structure was produced by forming the UV insulation layers (B) produced in the same manner as in Example 3 on both sides of the heat insulation layer (A) produced in the same manner as in example 1. Example 8 A laminated glass was obtained in the same manner as example 1, except that the interlayer film for a laminated glass with three-layer structure was produced by forming the UV insulation layers (B) produced in the same manner as in example 3 on both sides of the heat insulation layer (B) produced in the same manner as in the eg 2. Example 9 A layer of UV insulation (C) was produced in the same manner as in Example 1, except that fine particles of ZnO (average particle diameter of 80 nm) coated with silica were used as the cutting agent of UV in the production of UV insulation layer. A laminated glass was obtained in the same manner as Example 1, except that the insulation layer was used of heat (A) produced in the same manner as in example 1 and the UV insulation layer (C). Example 10 A laminated glass was obtained in the same manner as Example 1, except that the heat insulation layer (B) produced in the same manner as in Example 2 and the UV insulation layer (C) was used. produced in the same manner as in Example 9. Example 11 A UV insulation layer (D) was produced in the same manner as in Example 1, except that fine Ce02 particles were used (average particle diameter of 80 nm ) as the UV cutting agent in the production of UV insulation layer. A laminated glass was obtained in the same manner as in Example 1, except that the heat insulation layer (A) produced in the same manner as in example 1 and the UV insulation layer (D) was used. Example 12 A laminated glass was obtained in the same manner as Example 1, except that the heat insulation layer (A) produced in the same manner as in Example 1 and the UV insulation layer (D) was used. produced in the same manner as in Example 9. Example 13 A laminated glass was obtained in the same manner as Example 1, except that the interlayer film for a laminated glass with a three-layer structure was produced by forming the UV insulation layers (C) produced in the same manner as in Example 9 on both sides of the heat insulation layer (A) produced in the same manner as in Example 1. Example 14 A laminated glass was obtained in the same manner as example 1, except that the interlayer film for a laminated glass with a three-layer structure was produced by forming the UV insulation layers (C) produced in the same manner as in example 9 on both sides of the heat insulation layer (B) produced in the same manner as in example 2. Example 15 A laminated glass was obtained in the same manner as example 1, except that the interlayer film for a laminated glass with a three-layer structure was produced by forming the UV insulation layers (D) produced in the same manner as in Example 11 on both sides of the heat insulation layer (A) produced in the same way Example 1: Example 16 A laminated glass was obtained in the same manner as Example 1, except that the interlayer film for a laminated glass with a three-layer structure was produced by forming the UV insulation layers (D ) produced in the same manner as in example 11 on both sides of the heat insulation layer (B) produced in the same manner as in example 2.

Example 17 A layer of UV insulation (E) was produced in the same manner as in Example 1, except that a UV absorber of the ester type of malonic acid (propanodioic acid, (4-methoxyphenyl) -methylene ester) - dimethyl (manufactured by Clariant Inc., Hostavin PR-25)) was used as the UV cutting agent in the production of the UV insulation layer. A laminated glass was obtained in the same manner as Example 1, except that the heat insulation layer (A) produced in the same manner as in Example 1 and the UV isolation layer (E) was used. Example 18 A laminated glass was obtained in the same manner as example 1, except that the interlayer film for a laminated glass a three-layer structure was produced by forming the UV (E) insulation layers produced in the same manner as in example 17 on both sides of the heat insulation layer (A) produced in the same manner as in example 1. Comparative Example 1 The heat insulation layer (A) was produced in the same manner as in the example 1, and a laminated glass was obtained only the use of the heat insulation layer (A) in the same manner as in example 1. Comparative Example 2 The heat insulation layer (B) was produced from in the same manner as in example 2, and a laminated glass was obtained only the use of the heat insulation layer (B) in the same manner as in example 1. The heat insulation layers (A) and (B) produced in the respective examples and comparative examples were subjected to evaluations of electromagnetic wave insulation property, turbidity, visible light transmittance and solar radiation transmittance, and insulation layers from UV (A) to (E) were subjected to UV transmittance evaluations, and the laminated crystals obtained in the respective examples of the weather resistance test according to the following methods. (1) Electromagnetic wave insulation property of the heat insulation layer respect to each laminated glass produced by separately interlacing the heat insulation layers (A) and (B) clear crystals, the reflection loss value (dB) in a range of 0. 1 to 10 MHz was compared to that of a single float glass plate a thickness of 2. 5 mm by a KEC electromagnetic wave transmittance measurement method (measurement of the electromagnetic field wave measurement effect of measurement) and the minimum and maximum values of the difference were recorded at the aforementioned frequency. The reflection loss value (dB) in the range of 2 to 26.5 GHz was measured by erectly fixing each sample a frame size of 600 mm between a pair of antennas for transmitting and receiving and receiving electric wave from an electric wave signal generator by the spectrum analyzer to evaluate the isolation property of each sample (vertical field electromagnetic wave measurement method). The results are shown in Table 1 . (2) Turbidity of the heat insulation layer respect to each laminated glass produced by separately interlaying the heat insulation layers (A) and (B) clear crystals, the measurement was carried out in accordance JIS K 6714. The results are shown in table 1. (3) Transmittance of visible light and solar radiation transmittance of the heat insulation layer respect to each laminated glass produced by separately interlaying the heat insulation layers (A) and (B) clear crystals, the transmittance of visible light in the wavelength region from 380 to 780 nm was measured in accordance JIS Z 8722 and JIS R 3106 (1998) when using a recording spectrophotometer (manufactured by Shimadzu Corporation, U 4000). Also, the transmittance of sunlight in a region of wavelength from 300 to 2100 nm was measured and the ratio of the same to the transmittance of visible light was calculated. The results are shown in Table 1 . (4) UV transmittance of the UV insulation layer respect to each laminated glass produced by separately interlaying the UV insulation layers (A) to (E) clear crystals, the UV transmittance was measured in accordance with SAE J1796. The results are shown in table 2. (5) Weathering test of the laminated glass With respect to each laminated glass produced in the respective examples and comparative examples, the visible light transmittance in the 380 wavelength region at 780 nm was measured in accordance with JIS Z 8722 and JIS R 3106 (1998) by using a recording spectrophotometer (manufactured by Shimadzu Corporation, U 4000). Also, the measurement was carried out in the same way after the radiation test of S-Xenon (Super Xenon) and ΔT was calculated by comparing with the measurement result before radiation according to the following equation (1 ). The results are shown in table 3. In addition, the measurement was carried out so that the first layer on the incident side of light is set to be a layer of UV insulation. ? Tv = Tv (after S-Xenon radiation) - Tv (before S-Xenon radiation) (1) S-Xenon radiation test (Super Xenon) Each 5 x 10 cm radiation sample was produced and was subjected to the S-Xenon radiation test under the following conditions: Test apparatus: Super Xenon weather meter (SX 75, manufactured by Suga Test Instrument Co., Ltd.); UV intensity: 180 mW / m2; Limited wavelength: 300 to 400 nm; Black panel temperature: 63 ° C; Filter: quartz crystal (internal) / # 275 (external); and Duration of radiation: 100 hours. With respect to each laminated glass produced in the respective examples and comparative examples, similarly, the transmittance of visible light in the wavelength region from 380 to 780 nm was measured in accordance with JIS Z 8722 and JIS R 3106 (1998 ) when using a recording spectrophotometer (manufactured by Shimadzu Corporation, U 4000). Also, the measurement was carried out in the same way after the radiation test of S-UV (Super-UV) and? Tv was calculated when comparing with the result of measurement before radiation in accordance with the following equation ( 2) . The results are shown in Table 3. Further, the measurement was carried out so that the first layer on the incident side of light is fixed to be a layer of UV insulation. ? Tv = Tv (after S-UV radiation) - Tv (before S-UV radiation) (2) Super UV radiation test (SUV) Each 5 x 10 cm radiation sample was produced and submitted to the SUV radiation test under the following conditions: Test apparatus: Super-UV EYE tester (SUV-Fll model, manufactured by I asaki Electric Co., Ltd.); UV intensity: 100 mW / m2; Limited wavelength: 295 to 450 nm; Black panel temperature: 63 ° C; Radiation duration: 300 hours. Table 1 Table 2 Table 3 heat insulation (A): heat insulation layer (A) heat insulation (B): heat insulation layer (B) UV (A): UV insulation layer (A) UV (B): UV insulation layer (B) UV (C): UV insulation layer (C) UV (D): UV insulation layer ( D) UV (E): UV insulation layer (E) As shown in table 1 to table 3, the heat insulation layers produced in the respective examples and comparative examples all had a wave insulation property electromagnetic radiation of 10 dB or less, a turbidity of 1.0% or less, a visible light transmittance of 70% or greater, and a solar radiation transmittance of 85% or less of the visible light transmittance, and interlayer films of UV isolation produced in the examples had UV transmittance of 30% or less. It was found that the laminated crystals in accordance with the examples had Tv, which was calculated from the values of visible light transmittance before and after the weather resistance test, closer to 0 than the Tv of the crystals. laminates in accordance with the comparative examples, which was calculated from the transmittance values of visible light before and after the weather resistance test and involves the laminated glass plates in accordance with the examples were excellent in resistance to the weather.

FIELD OF INDUSTRIAL APPLICATION OF THE INVENTION The present invention provided an interlayer film for a laminated glass which is excellent in transparency, property of heat insulation and electromagnetic wave transmittance in the case of being used for a laminated glass and does not deteriorate in the visible light transmittance and initial optical properties even after a light durability test and provides a laminated glass comprising the interlayer film for a laminated glass. It is noted that in relation to this date, the best method known by the applicant to carry out the aforementioned invention is the conventional one for the manufacture of the objects or products to which it refers.

Claims (16)

1. CLAIMS Having described the invention as above, the content of the following claims is claimed as property. An interlayer film for a laminated glass, characterized in that it comprises at least each of the layers of a heat insulation layer and a layer of UV insulation.
2. 2. The interlayer film for a laminated glass according to claim 1, characterized in that it comprises three layers composed of at least the heat insulation layer and the UV insulation layers formed on both sides of the insulation layer of hot.
3. The interlayer film for a laminated glass according to claim 1 or 2, characterized in that the heat insulation layer has an electromagnetic wave insulation capacity of 10 dB or less at a frequency of 0.1 MHz to 26.5 GHz; a turbidity of 1.0% or less; a visible light transmittance of 70% or greater; and a solar radiation transmittance of 85% or less of the visible light transmittance in a wavelength range of 300 to 2,100 nm in the case where the heat insulation layer is inserted between two plates of crystal selected from a group consisting of clear crystals, green crystals, high heat radiation absorption crystals and UV absorption crystals to obtain a laminated crystal, and the UV insulation layer has a UV transmittance of 60% or lesser extent in accordance with SAE J1796 in the case where the UV insulation layer is inserted between two glass plates selected from a group consisting of clear crystals, green crystals, high heat radiation absorption crystals and absorption crystals of UV to obtain a laminated glass.
4. 4. The interlayer film for a laminated glass according to claim 1, 2 or 3, characterized in that the heat insulation layer contains a transparent resin and a heat insulation agent.
5. 5. The interlayer film for a laminated glass according to claim 1, 2, 3 or 4, characterized in that the heat insulation layer contains 100 parts by weight of a polyvinylacetal resin, 20 to 60 parts by weight of a plasticizer, 0.0001 to 1.0 parts by weight of an alkali metal salt and / or alkaline earth metal salt, 0.1 to 3.0 parts by weight of a fine particle of tin-doped indium oxide, 0.01 to 5.0 parts by weight of a stabilizer of dispersion, and 0.01 to 5.0 parts by weight of an antioxidant, the fine particle of indium oxide doped with tin has a diameter of average particle of 80 nm or smaller and is dispersed to adjust the number of the particle with a particle diameter of 100 nm or larger to be 1 or less per 1 μm2.
6. 6. The interlayer film for a laminated glass according to claim 1, 2, 3, 4 or 5, characterized in that the UV insulation layer contains a transparent resin and a UV cutting agent.
7. The interlayer film for a laminated glass according to claim 6, characterized in that the UV cutting agent is at least one type of UV absorbers selected from a group consisting of metal, metal oxide, benzotriazole, benzophenone, triazine, benzoate, malonic acid ester and oxalic acid anuide.
8. 8. The interlayer film for a laminated glass according to claim 6 or 7, characterized in that the UV cutting agent is a UV absorber of metal oxide.
9. 9. The interlayer film for a laminated glass according to claim 8, characterized in that the metal oxide UV absorber is zinc oxide and / or titanium oxide.
10. 10. The interlayer film for a laminated glass according to claim 8 or 9, characterized in that the UV absorber of metal oxide is coated with an insulating metal oxide on the surface.
11. 11. The interlayer film for a laminated glass according to claim 10, characterized in that the insulating metal oxide is silica.
12. 12. The interlayer film for a laminated glass according to claim 8 or 9, characterized in that the metal oxide UV absorber is coated with a hydrolyzable organic silicon compound on the surface.
13. 13. The interlayer film for a laminated glass according to claim 8 or 9, characterized in that the UV absorber of metal oxide is coated with a silicone compound on the surface.
14. 14. The interlayer film for a laminated glass according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 or 13, characterized in that a decrease in visible light transmittance is 1.0% or less in accordance with JIS Z 8722 and JIS R 3106 (1998) after the interlayer film is inserted between two glass plates selected from a group consisting of clear crystals, green crystals, high heat radiation absorption crystals and UV absorption crystals to obtain a laminated glass; and the 100-hour Super Xenon radiation test is carried out for the laminated glass.
15. 15. The interlayer film for a laminated glass according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 or 14, characterized in that a Visible light transmittance decrease is 3.0% or lesser in accordance with JIS Z 8722 and JIS R 3106 (1998) after the interlayer film is inserted between two glass plates selected from a group consisting of clear crystals, green crystals, high heat radiation absorption crystals and absorption crystals of UV to obtain a laminated glass; and the 300-hour Super UV radiation test is carried out for the laminated glass.
16. 16. A laminated glass, characterized in that it can be obtained by using the interlayer film for the laminated glass according to the claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15.