EP2748234A1 - Novel film for solar cells - Google Patents

Novel film for solar cells

Info

Publication number
EP2748234A1
EP2748234A1 EP12748484.8A EP12748484A EP2748234A1 EP 2748234 A1 EP2748234 A1 EP 2748234A1 EP 12748484 A EP12748484 A EP 12748484A EP 2748234 A1 EP2748234 A1 EP 2748234A1
Authority
EP
European Patent Office
Prior art keywords
mol
polyester
weight
solar cells
average molecular
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12748484.8A
Other languages
German (de)
French (fr)
Inventor
Wilhelm Laufer
Armin Eckert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rhein Chemie Rheinau GmbH
Original Assignee
Rhein Chemie Rheinau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rhein Chemie Rheinau GmbH filed Critical Rhein Chemie Rheinau GmbH
Priority to EP12748484.8A priority Critical patent/EP2748234A1/en
Publication of EP2748234A1 publication Critical patent/EP2748234A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • H01L31/049—Protective back sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2379/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2361/00 - C08J2377/00
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2479/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2461/00 - C08J2477/00
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present invention relates to novel films for solar cells, which are characterized by an improved resistance to hydrolysis, and the solar cells containing these films.
  • a solar cell element In photovoltaic power generation, as is known, solar energy is converted directly into electrical energy by means of a silicon cell semiconductor. However, this solar cell element undergoes a deterioration when it is brought into direct contact with the ambient air. Therefore, a solar cell element is generally disposed between a sealing material and a transparent surface protection material (mostly glass) and a back surface protection material (a back sheet of, for example, a polyester resin, a fluororesin, or the like) to provide a buffering effect, and the penetration of foreign matter, and especially to prevent the ingress of moisture.
  • a transparent surface protection material mostly glass
  • a back surface protection material a back sheet of, for example, a polyester resin, a fluororesin, or the like
  • fluorine resins plastics based on polyvinyl fluoride
  • these are so expensive to manufacture and often not available in sufficient quantity, so that the use of hydrolyzed polyester resins is avoided.
  • the development work is therefore primarily in the direction of hydrolysis protection of the polyester resin layer.
  • Carbodiimides used see EP-A 2262000.
  • aliphatic carbodiimides such. Carbodilite® LA-1 or Carbodilite® HMV-8CV, preferably.
  • the object of the present invention was therefore to provide films for solar cells based on polyester, which do not have the disadvantages of the prior art and are above all resistant to hydrolysis.
  • films containing at least one polyester and 0.5-2.5% by weight of at least one polymeric aromatic carbodiimide based on 1,3,5-triisopropyl-2,4-diisocyanatobenzene having a weight average molecular weight M w from 10,000 to 30,000 g / mol do not have the disadvantages of the prior art.
  • the present invention therefore relates to films for solar cells, comprising at least one polyester and 0.5 to 2.5 wt.%, Preferably 1, 0 to 2.0 wt.%, At least one polymeric Carbodiimides based on l, 3,5-triisopropyl-2,4-diisocyanatobenzene having a weight average molecular weight M w of 10,000 to 30,000 g / mol, preferably 15,000 to 25,000 g / mol, most preferably 17,000 to 22,000, based on the polyester ,
  • the determination of the weight-average molar masses was carried out by GPC (gel permeation chromatography), measured in tetrahydrofuran (THF) against polystyrene as standard.
  • the polyester is polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT) and / or polycyclohexane dimethanol terephthalate (PCT).
  • PET polyethylene terephthalate
  • PBT polybutylene terephthalate
  • PTT polytrimethylene terephthalate
  • PCT polycyclohexane dimethanol terephthalate
  • PET polyethylene terephthalate
  • PET polytrimethylene terephthalate
  • PCT polycyclohexane dimethanol terephthalate
  • the polyester is a mixture of polyesters. In this connection, a mixture of polyethylene terephthalate (PET) and polyethylene naphthalate (PEN) is preferable.
  • polyesters are commercially available substances, e.g. from Invista, Novapet S.A., Lanxesstechnik GmbH, Corterra Polymers (Shell Chemicals) or Teijin DuPont.
  • the carbodiimides are preferably aromatic carbodiimides based on 1,3,5-triisopropyl-2,4-diisocyanatobenzene having a weight-average molar mass M w of from 20,000 to 30,000 g / mol. These are commercially available and are z. B. at the company Rhein Chemie Rheinau GmbH available.
  • the films of the invention may also contain other additives, such. Pigments, colors,
  • Fillers stabilizers, antioxidants, plasticizers, processing aids, crosslinkers etc.
  • the film of the invention is preferably produced by the following method.
  • the polymeric carbodiimide based on 1,3,5-triisopropyl-2,4-diisocyanatobenzene having a weight average molecular weight M w of 10,000 to 30,000 g / mol in the desired concentration by means of kneader and / or extruder in the Polyester incorporated.
  • the polymeric carbodiimide is based on l, 3,5-triisopropyl-2,4-diisocyanatobenzene having a weight average molecular weight M w of 10,000 to 30,000 g / mol in the form of a polyester-containing masterbatch by means of kneader and / or extruder in incorporated the polyester.
  • concentration of the carbodiimide in the masterbatch is preferably 10-20% by weight.
  • Optional additives, pigments, paints, fillers, stabilizers, antioxidants, plasticizers, processing aids, crosslinkers are preferably incorporated into the polyester in a mixing step with the polymeric carbodiimide.
  • the dosing order of carbodiimide and additive can be chosen arbitrarily.
  • the film is preferably produced by mixing carbodiimide or carbodiimide masterbatch and polyester in melt and subsequent melt extrusion, see also EP-A 2262000.
  • the following devices can be used for melt extrusion: single-shaft, twin-screw or multi-shaft extruder, planetary extruder, cascade extruder, continuous working co-kneader (Buss type) and discontinuous kneaders, eg Type Banbury and other commonly used in the polymer industry aggregates.
  • the films can be produced in any thickness. However, layer thicknesses between 25 and 300 micrometers are preferred.
  • the present invention furthermore relates to the use of the film according to the invention in solar cells and there preferably for sealing and thus for protection against environmental influences, such as e.g. Moisture and the ingress of foreign bodies.
  • the present invention additionally relates to a solar cell module comprising at least one film according to the invention.
  • Solar cells usually consist of several layers of different materials, such as the front glass, of e.g. Glass sheets or transparent substrates, e.g. Polycarbonate, the silicon wafers, which are laminated in embedding films, usually in ethylene vinyl acetate, - a backsheet of polyvinyl fluoride and / or polyester and an aluminum frame.
  • the front glass of e.g. Glass sheets or transparent substrates, e.g. Polycarbonate
  • the silicon wafers which are laminated in embedding films, usually in ethylene vinyl acetate, - a backsheet of polyvinyl fluoride and / or polyester and an aluminum frame.
  • solar cells are also known in which there are still transparent polymer layers between the front glass and the silicon wafer, eg. from ⁇ -olefin-vinyl acetate copolymers, with Olefins selected from ethene, propene, butene, pentene, hexene, heptene and octene, as described, for example, in EP-A 2031662.
  • the film of the present invention is used in solar cells as a backsheet.
  • the film can be used in all known in the prior art solar cells.
  • the production of the solar cell is carried out according to the methods described in the prior art, starting from the standard methods for the production of silicon casting methods, Bridgeman method, EFG (edgedefmed film-fed growth) - method or the Czochralski method and the subsequent production of Si wafer and the stacking of the aforementioned material layers, wherein instead of the standard used backsheet, the film according to the invention is used.
  • the individual layers of the solar cell can also be connected to one another in lamination processes, see EP-A 2031662.
  • PET polyethylene terephthalate available from Novapet, used in Examples 1 and 3-7.
  • the above-mentioned PET was used in a laboratory twin-screw extruder ZSK 25 of
  • Stabaxol® 1 LF bis-2,6-diisopropylphenylcarbodiimide, obtained from Rhein Chemie Rheinau GmbH, used in Example 3.
  • Carbodilite® LA 1, a polymeric aliphatic carbodiimide based on dicyclohexylmethane-4,4'-diisocyanate (H12MDI) having a weight average molecular weight M w > 20000 g / mol, from Nisshinbo Chemical Inc., used in Ex. No. 9
  • Carbodilite ® HMV-8 CA a polymeric aliphatic carbodiimide based on
  • H12MDI Dicyclohexylmethane-4,4'-diisocyanate having a weight average molecular weight M w of about 10,000 g / mol, the company Nisshinbo Chemical Inc., used in Ex. No. 10.
  • the carbodiimides were incorporated into the PET by means of a laboratory twin-screw extruder ZSK 25 from Werner & Pfleiderer.
  • the type and amount of carbodiimide used are shown in Table 1, as well as the results in terms of hydrolysis stability.
  • F3 standard test specimens were produced on an Arburg Allrounder 320 S 150-500 injection molding machine.
  • this F3 standard test specimen was stored in steam at a temperature of 120 ° C. for 24 hours and its breaking elongation was measured after 0 and 24 hours.
  • the determination of the weight-average molar masses was carried out by GPC (gel permeation chromatography), measured in THF against polystyrene as standard. For this purpose, a measuring device from Thermo Scientific was used.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Materials Engineering (AREA)
  • Photovoltaic Devices (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Tents Or Canopies (AREA)

Abstract

The invention relates to novel films for solar cells, which are characterized by having an improved resistance to hydrolysis.

Description

Neue Folien für Solarzellen  New foils for solar cells
Die vorliegenden Erfindung betrifft neue Folien für Solarzellen, die sich durch eine verbesserte Hydrolysebeständigkeit auszeichnen, sowie die Solarzellen, enthaltend diese Folien. The present invention relates to novel films for solar cells, which are characterized by an improved resistance to hydrolysis, and the solar cells containing these films.
Die Stromerzeugung mittels Photovoltaik hat nach dem beschlossenen deutschlandweiten Ausstieg aus der Kernenergie einen Aufschwung erfahren. Electricity generation by means of photovoltaics has experienced an upturn following the decision to phase out nuclear energy nationwide.
Bei der photovoltaischen Stromerzeugung wird bekanntermaßen Sonnenenergie mittels eines Siliziumzellen-Halbleiters direkt in elektrische Energie umgewandelt. Dieses Solarzellenelement erfährt allerdings eine Qualitätsminderung, wenn es in direkten Kontakt mit der Umgebungsluft gebracht wird. Darum wird ein Solarzellenelement im Allgemeinen zwischen einem Dichtungsmaterial und einem transparenten Oberflächenschutzmaterial (meistens Glas) und einem rückseitigen Oberflächenschutzmaterial (einer Rückseitenfolie zum Beispiel aus einem Polyesterharz, einem Fluorharz oder dergleichen) angeordnet, um eine Pufferwirkung zu erzielen und das Eindringen von Fremdkörpern und vor allem das Eindringen von Feuchtigkeit zu verhindern. In photovoltaic power generation, as is known, solar energy is converted directly into electrical energy by means of a silicon cell semiconductor. However, this solar cell element undergoes a deterioration when it is brought into direct contact with the ambient air. Therefore, a solar cell element is generally disposed between a sealing material and a transparent surface protection material (mostly glass) and a back surface protection material (a back sheet of, for example, a polyester resin, a fluororesin, or the like) to provide a buffering effect, and the penetration of foreign matter, and especially to prevent the ingress of moisture.
Fluorharze (Kunststoffe auf Basis von Polyvinylfluorid) eignen sich aufgrund ihrer Inertheit besonders für dieses Einsatzgebiet, allerdings sind diese so teuer in der Herstellung und häufig nicht in ausreichender Menge verfügbar, so das auf hydrolyseinstabile Polyesterharze ausgewichen wird. Die Entwicklungsarbeiten gehen daher vorrangig in Richtung Hydrolyseschutz der Polyesterharzschicht. Due to their inertness, fluorine resins (plastics based on polyvinyl fluoride) are particularly suitable for this field of application, but these are so expensive to manufacture and often not available in sufficient quantity, so that the use of hydrolyzed polyester resins is avoided. The development work is therefore primarily in the direction of hydrolysis protection of the polyester resin layer.
Zu diesem Zweck werden z.B. Carbodiimide eingesetzt, siehe EP-A 2262000. Dabei sind vor allem aliphatische Carbodiimide, wie z.B. Carbodilite® LA-1 bzw. Carbodilite® HMV-8CV, bevorzugt.For this purpose, e.g. Carbodiimides used, see EP-A 2262000. In particular, aliphatic carbodiimides, such. Carbodilite® LA-1 or Carbodilite® HMV-8CV, preferably.
Diese haben allerdings den Nachteil, nur in hohen Konzentrationen als Hydrolyseschutzmittel zu wirken. However, these have the disadvantage of acting as hydrolysis protectants only in high concentrations.
Die Aufgabe der vorliegenden Erfindung bestand somit darin, Folien für Solarzellen auf Basis von Polyester bereitzustellen, die die Nachteile des Standes der Technik nicht aufweisen und vor allem hydrolysestabil sind. The object of the present invention was therefore to provide films for solar cells based on polyester, which do not have the disadvantages of the prior art and are above all resistant to hydrolysis.
Überraschenderweise wurde nun gefunden, dass Folien, enthaltend mindestens einen Polyester und 0,5 - 2,5 Gew.% mindestens eines polymeren aromatischen Carbodiimids auf Basis von 1,3,5- Triisopropyl-2,4-diisocyanatobenzol mit einer gewichtsmittleren Molmasse Mw von 10000 bis 30000 g/mol die Nachteile des Standes der Technik nicht aufweisen. Gegenstand der vorliegenden Erfindung sind daher Folien für Solarzellen, enthaltend mindestens einen Polyester und 0,5 - 2,5 Gew.%, bevorzugt 1 ,0 - 2,0 Gew.%, mindestens eines polymeren Carbodiimids auf Basis von l,3,5-Triisopropyl-2,4-diisocyanatobenzol mit einer gewichtsmittleren Molmasse Mw von 10000 bis 30000 g/mol, bevorzugt 15000 bis 25000 g/mol, ganz besonders bevorzugt 17000 bis 22000, bezogen auf den Polyester. Surprisingly, it has now been found that films containing at least one polyester and 0.5-2.5% by weight of at least one polymeric aromatic carbodiimide based on 1,3,5-triisopropyl-2,4-diisocyanatobenzene having a weight average molecular weight M w from 10,000 to 30,000 g / mol do not have the disadvantages of the prior art. The present invention therefore relates to films for solar cells, comprising at least one polyester and 0.5 to 2.5 wt.%, Preferably 1, 0 to 2.0 wt.%, At least one polymeric Carbodiimides based on l, 3,5-triisopropyl-2,4-diisocyanatobenzene having a weight average molecular weight M w of 10,000 to 30,000 g / mol, preferably 15,000 to 25,000 g / mol, most preferably 17,000 to 22,000, based on the polyester ,
Die Ermittlung der gewichtsmittleren Molmassen erfolgte mittels GPC (Gel-Permeations- Chromatographie), gemessen in Tetrahydrofuran (THF) gegen Polystyrol als Standard. The determination of the weight-average molar masses was carried out by GPC (gel permeation chromatography), measured in tetrahydrofuran (THF) against polystyrene as standard.
In einer Ausführungsform der vorliegenden Erfindung handelt es sich bei dem Polyester um Polyethylenterephthalat (PET), Polyethylennaphthalat (PEN), Polybutylenterephthalat (PBT), Polytrimethyleneterephthalat (PTT) und/oder Polycyclohexandimethanol-terephthalat (PCT). Dabei sind Polyethylenterephthalat (PET) und Polytrimethyleneterephthalat (PTT) besonders bevorzugt. In einer weiteren Ausführungsform der Erfindung handelt es sich bei dem Polyester um ein Gemisch aus Polyestern. In diesem Zusammenhang ist ein Gemisch aus Polyethylenterephthalat (PET) und Polyethylennaphthalat (PEN) bevorzugt. In one embodiment of the present invention, the polyester is polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT) and / or polycyclohexane dimethanol terephthalate (PCT). Polyethylene terephthalate (PET) and polytrimethylene terephthalate (PTT) are particularly preferred. In a further embodiment of the invention, the polyester is a mixture of polyesters. In this connection, a mixture of polyethylene terephthalate (PET) and polyethylene naphthalate (PEN) is preferable.
Bei den Polyestern handelt es sich um handelsüblich Substanzen, die z.B. bei den Firmen Invista, Novapet S. A., Lanxess Deutschland GmbH, Corterra Polymers (Shell Chemicals) oder auch Teijin DuPont, erhältlich sind. The polyesters are commercially available substances, e.g. from Invista, Novapet S.A., Lanxess Deutschland GmbH, Corterra Polymers (Shell Chemicals) or Teijin DuPont.
Bei den Carbodiimiden im Sinne der Erfindung handelt es sich vorzugsweise um aromatische Carbodiimide auf Basis von l,3,5-Triisopropyl-2,4-diisocyanatobenzol mit einer gewichtsmittleren Molmasse Mw von 20000 bis 30000 g/mol. Diese sind handelsüblich und sind z. B. bei der Firma Rhein Chemie Rheinau GmbH erhältlich. Die erfindungsgemäßen Folien können auch weitere Additive enthalten, wie z. B. Pigmente, Farben,In the context of the invention, the carbodiimides are preferably aromatic carbodiimides based on 1,3,5-triisopropyl-2,4-diisocyanatobenzene having a weight-average molar mass M w of from 20,000 to 30,000 g / mol. These are commercially available and are z. B. at the company Rhein Chemie Rheinau GmbH available. The films of the invention may also contain other additives, such. Pigments, colors,
Füllstoffe, Stabilisatoren, Antioxidantien, Weichmacher, Verarbeitungshilfsstoffe, Vernetzer etc. Fillers, stabilizers, antioxidants, plasticizers, processing aids, crosslinkers etc.
Die Herstellung der erfindungsgemäßen Folie erfolgt vorzugsweise nach dem folgenden Verfahren. The film of the invention is preferably produced by the following method.
In einer Ausführungsform der Erfindung wird das polymere Carbodiimid auf Basis von 1,3,5- Triisopropyl-2,4-diisocyanatobenzol mit einer gewichtsmittleren Molmasse Mw von 10000 bis 30000 g/mol in der gewünschten Konzentration mittels Kneter und/oder Extruder in den Polyester eingearbeitet. In one embodiment of the invention, the polymeric carbodiimide based on 1,3,5-triisopropyl-2,4-diisocyanatobenzene having a weight average molecular weight M w of 10,000 to 30,000 g / mol in the desired concentration by means of kneader and / or extruder in the Polyester incorporated.
In einer weiteren Ausführungsform der Erfindung wird das polymere Carbodiimid auf Basis von l,3,5-Triisopropyl-2,4-diisocyanatobenzol mit einer gewichtsmittleren Molmasse Mw von 10000 bis 30000 g/mol in Form eines Polyester-haltigen Masterbatches mittels Kneter und/oder Extruder in den Polyester eingearbeitet. Dabei beträgt die Konzentration des Carbodiimids im Masterbatch vorzugsweise 10-20 Gew.%. In a further embodiment of the invention, the polymeric carbodiimide is based on l, 3,5-triisopropyl-2,4-diisocyanatobenzene having a weight average molecular weight M w of 10,000 to 30,000 g / mol in the form of a polyester-containing masterbatch by means of kneader and / or extruder in incorporated the polyester. The concentration of the carbodiimide in the masterbatch is preferably 10-20% by weight.
Gegebenenfalls einzusetzenden Additive, Pigmente, Farben, Füllstoffe, Stabilisatoren, Antioxidantien, Weichmacher, Verarbeitungshilfsstoffe, Vernetzer werden vorzugsweise in einem Mischschritt mit dem polymeren Carbodiimid in den Polyester eingearbeitet. Die Dosierreihenfolge von Carboddimid und Additiv kann dabei beliebig gewählt werden. Optional additives, pigments, paints, fillers, stabilizers, antioxidants, plasticizers, processing aids, crosslinkers are preferably incorporated into the polyester in a mixing step with the polymeric carbodiimide. The dosing order of carbodiimide and additive can be chosen arbitrarily.
Die Herstellung der Folie erfolgt vorzugsweise durch Mischen von Carbodiimid oder Carbodiimid- Masterbatch und Polyester in Schmelze und anschließender Schmelzextrusion, siehe auch EP-A 2262000. Für die Schmelzextrusion sind folgenden Geräte einsetzbar: Einwellen-, Doppelwellen- oder Mehrwellenextruder, Planetenextruder, Kaskadenextruder, kontinuierlich arbeitende Co-Kneter (Typ Buss) und diskontinuierlich arbeitende Kneter, z.B. Typ Banbury und andere in der Polymerindustrie übliche Aggregate. The film is preferably produced by mixing carbodiimide or carbodiimide masterbatch and polyester in melt and subsequent melt extrusion, see also EP-A 2262000. The following devices can be used for melt extrusion: single-shaft, twin-screw or multi-shaft extruder, planetary extruder, cascade extruder, continuous working co-kneader (Buss type) and discontinuous kneaders, eg Type Banbury and other commonly used in the polymer industry aggregates.
Die Folien können dabei in beliebiger Dicke hergestellt werden. Bevorzugt sind jedoch Schichtdicken zwischen 25 und 300 Mikrometer. The films can be produced in any thickness. However, layer thicknesses between 25 and 300 micrometers are preferred.
Gegenstand der vorliegenden Erfindung ist zudem die Verwendung der erfindungsgemäßen Folie in Solarzellen und dort vorzugsweise zum Abdichten und damit zum Schutz vor Umgebungseinflüssen, wie z.B. Feuchtigkeit und dem Eindringen von Fremdkörpern. The present invention furthermore relates to the use of the film according to the invention in solar cells and there preferably for sealing and thus for protection against environmental influences, such as e.g. Moisture and the ingress of foreign bodies.
Gegenstand der vorliegenden Erfindung ist zudem ein Solarzellenmodul, enthaltend mindestens eine erfindungsgemäße Folie. The present invention additionally relates to a solar cell module comprising at least one film according to the invention.
Solarzellen bestehen in der Regel aus mehreren Schichten aus unterschiedlichen Materialien, wie dem Frontglas, aus z.B. Glasscheiben oder transparenten Substraten, wie z.B. Polycarbonat, den Siliciumwafern, die einlaminiert sind in Einbettfolien, bestehend in der Regel in Ethylenvinylacetat, - einer Rückseitenfolie aus Polyvinylfluorid und/oder Polyester und einem Aluminiumrahmen. Solar cells usually consist of several layers of different materials, such as the front glass, of e.g. Glass sheets or transparent substrates, e.g. Polycarbonate, the silicon wafers, which are laminated in embedding films, usually in ethylene vinyl acetate, - a backsheet of polyvinyl fluoride and / or polyester and an aluminum frame.
Zudem sind auch Solarzellen bekannt, in denen sich zwischen dem Frontglas und dem Siliciumwafer noch transparente Polymerschichten befinden, z.B . aus α-Olefin-Vinylacetat-Copolymeren, mit Olefinen, ausgewählt aus Ethen, Propen, Buten, Penten, Hexen, Hepten und Octen, wie z.B. beschrieben in EP-A 2031662. In addition, solar cells are also known in which there are still transparent polymer layers between the front glass and the silicon wafer, eg. from α-olefin-vinyl acetate copolymers, with Olefins selected from ethene, propene, butene, pentene, hexene, heptene and octene, as described, for example, in EP-A 2031662.
In der vorliegenden Erfindung wird die erfindungsgemäße Folie in Solarzellen als Rückseitenfolie eingesetzt. Dabei ist die Folie in allen im Stand der Technik bekannten Solarzellen einsetzbar. In the present invention, the film of the present invention is used in solar cells as a backsheet. In this case, the film can be used in all known in the prior art solar cells.
Die Herstellung der Solarzelle erfolgt dabei nach den in dem Stand der Technik beschriebenen Verfahren, ausgehend von den Standardverfahren zur Herstellung von Silizium über Gießverfahren, Bridgeman Verfahren, EFG (edgedefmed film-fed growth)- Verfahren oder dem Czochralski- Verfahren und der nachfolgenden Herstellung der Si-Wafer und dem Aufeinanderschichten der vorgenannten Materialschichten, wobei anstelle der standardmäßig eingesetzten Rückseitenfolie, die erfindungsgemäße Folie eingesetzt wird. Die einzelnen Schichten der Solarzelle können dabei auch in Laminierverfahren miteinander verbunden werden, siehe EP-A 2031662. The production of the solar cell is carried out according to the methods described in the prior art, starting from the standard methods for the production of silicon casting methods, Bridgeman method, EFG (edgedefmed film-fed growth) - method or the Czochralski method and the subsequent production of Si wafer and the stacking of the aforementioned material layers, wherein instead of the standard used backsheet, the film according to the invention is used. The individual layers of the solar cell can also be connected to one another in lamination processes, see EP-A 2031662.
Der Rahmen der Erfindung erfasst alle oben stehenden und im Folgenden aufgeführten allgemeinen oder in Vorzugsbereichen genannten Restedefinitionen, Indizes, Parameter und Erläuterungen untereinander, also auch zwischen den jeweiligen Bereichen und Vorzugsbereichen in beliebiger Kombination. The scope of the invention covers all of the above-mentioned general or preferred radical definitions, indices, parameters and explanations with one another, ie also between the respective ranges and preferred ranges in any desired combination.
Die nachfolgenden Beispiele dienen der Erläuterung der Erfindung, ohne dabei limitierend zu wirken. The following examples serve to illustrate the invention without being limiting.
Ausführungsbeispiele : Exemplary embodiments:
In den Beispielen wurden die folgenden Substanzen eingesetzt: In the examples, the following substances were used:
PET = Polyethylenterephthalat erhältlich bei der Firma Novapet, eingesetzt in den Beispielen 1 und 3-7. In Bsp. Nr. 2 wurde das zuvor genannten PET in einem Labordoppelschneckenextruder ZSK 25 derPET = polyethylene terephthalate available from Novapet, used in Examples 1 and 3-7. In Ex. No. 2, the above-mentioned PET was used in a laboratory twin-screw extruder ZSK 25 of
Firma Werner & Pfleiderer vor der unten beschriebenen Messung einmal extrudiert. Werner & Pfleiderer extruded once before the measurement described below.
Stabaxol® 1 LF, Bis-2,6-Diisopropylphenylcarbodiimid, erhalten bei der Firma Rhein Chemie Rheinau GmbH, eingesetzt in Beispiel 3. Stabaxol® 1 LF, bis-2,6-diisopropylphenylcarbodiimide, obtained from Rhein Chemie Rheinau GmbH, used in Example 3.
Ein polymeres Carbodiimid auf Basis von l,3,5-Triisopropyl-2,4-diisocyanatobenzol mit einer gewichtsmittleren Molmasse 2000 < Mw < 5000 g/mol, eingesetzt in Beispiel 4. A polymeric carbodiimide based on l, 3,5-triisopropyl-2,4-diisocyanatobenzene having a weight average molecular weight 2000 <M w <5000 g / mol, used in Example 4.
Ein polymeres Carbodiimid auf Basis von l,3,5-Triisopropyl-2,4-diisocyanatobenzol mit einer gewichtsmittleren Molmasse A polymeric carbodiimide based on 1,3,5-triisopropyl-2,4-diisocyanatobenzene having a weight-average molecular weight
Mw von 17000 g/mol, eingesetzt in Beispiel 5 (E) M w of 17,000 g / mol, used in Example 5 (E)
Mw von 21700 g/mol, eingesetzt in Beispiel 6 (E) M w of 21700 g / mol used in Example 6 (E)
Mw von 38000 g/mol, eingesetzt in Beispiel 7 (V) Mw of 38,000 g / mol used in Example 7 (V)
Mw von 51000 g/mol, eingesetzt in Beispiel 8 (V). M w of 51000 g / mol, used in Example 8 (V).
Carbodilite® LA 1, ein polymeres aliphatisches Carbodiimid auf Basis von Dicyclohexylmethan- 4,4'-diisocyanat (H12MDI) mit einer gewichtsmittleren Molmasse Mw > 20000 g/mol, der Firma Nisshinbo Chemical Inc., eingesetzt in Bsp. Nr. 9 Carbodilite® HMV-8 C A, ein polymeres aliphatisches Carbodiimid auf Basis vonCarbodilite® LA 1, a polymeric aliphatic carbodiimide based on dicyclohexylmethane-4,4'-diisocyanate (H12MDI) having a weight average molecular weight M w > 20000 g / mol, from Nisshinbo Chemical Inc., used in Ex. No. 9 Carbodilite ® HMV-8 CA, a polymeric aliphatic carbodiimide based on
Dicyclohexylmethan-4,4'-diisocyanat (H12MDI) mit einer gewichtsmittleren Molmasse Mw von ca. 10000 g/mol, der Firma Nisshinbo Chemical Inc., eingesetzt in Bsp. Nr. 10. Dicyclohexylmethane-4,4'-diisocyanate (H12MDI) having a weight average molecular weight M w of about 10,000 g / mol, the company Nisshinbo Chemical Inc., used in Ex. No. 10.
Die Einarbeitung der Carbodiimide in das PET erfolgte mittels eines Labordoppelschneckenextruders ZSK 25 der Firma Werner & Pfleiderer. Art und Menge des eingesetzten Carbodiimids ergeben sich aus Tabelle 1 , ebenso wie die Messergebnisse in Bezug auf die Hydrolysestabilität. The carbodiimides were incorporated into the PET by means of a laboratory twin-screw extruder ZSK 25 from Werner & Pfleiderer. The type and amount of carbodiimide used are shown in Table 1, as well as the results in terms of hydrolysis stability.
Die für die Messung der Bruchdehnung wurden F3 -Normprüfkörper an einer Spritzgießmaschine des Typs Arburg Allrounder 320 S 150 - 500 erstellt. Für den Hydrolysetest wurden dieses F3 -Normprüfkörper in Wasserdampf bei einer Temperatur von 120°C für 24 Stunden gelagert und deren Bruchdehnung nach 0 und 24 Stunden gemessen. For measuring the elongation at break, F3 standard test specimens were produced on an Arburg Allrounder 320 S 150-500 injection molding machine. For the hydrolysis test, this F3 standard test specimen was stored in steam at a temperature of 120 ° C. for 24 hours and its breaking elongation was measured after 0 and 24 hours.
Die Ermittlung der gewichtsmittleren Molmassen erfolgte mittels GPC (Gel-Permeations- Chromatographie), gemessen in THF gegen Polystyrol als Standard. Zu diesem Zweck wurde ein Messgerät der Firma Thermo Scientific eingesetzt. The determination of the weight-average molar masses was carried out by GPC (gel permeation chromatography), measured in THF against polystyrene as standard. For this purpose, a measuring device from Thermo Scientific was used.
Die in Tabelle 1 angegebenen Werte ergeben sich aus der folgenden Berechnung: The values given in Table 1 result from the following calculation:
Bruchdehnung [%] = (Bruchdehnung nach 24 Stunden / Bruchdehnung nach 0 Stunden) x 100 Tabelle 1 Elongation at break [%] = (breaking elongation after 24 hours / breaking elongation after 0 hours) x 100 Table 1
V = Vergleichsversuch, E = erfindungsgemäß  V = comparative experiment, E = according to the invention
Es zeigt sich, dass bei der Verwendung von l ,3,5-Triisopropyl-2,4-diisocyanatobenzol mit einer gewichtsmittleren Molmasse Mw von 20000 g/mol die höchste Hydrolysestabilität erreicht werden kann. It can be seen that when using l, 3,5-triisopropyl-2,4-diisocyanatobenzene having a weight-average molar mass M w of 20,000 g / mol, the highest stability to hydrolysis can be achieved.

Claims

Patentansprüche claims
1. Folie enthaltend mindestens einen Polyester und 1,0 - 2,0 Gew.% mindestens eines polymeren Carbodiimids auf Basis von l,3,5-Triisopropyl-2,4-diisocyanatobenzol mit einer gewichtsmittleren Molmasse Mw von 10000 bis 30000 g/mol, bezogen auf den Polyester. 1. Film comprising at least one polyester and 1.0-2.0% by weight of at least one polymeric carbodiimide based on 1,3,5-triisopropyl-2,4-diisocyanatobenzene having a weight average molecular weight M w of from 10,000 to 30,000 g / mol, based on the polyester.
2. Folie nach Anspruch 1 , dadurch gekennzeichnet, dass es sich bei dem Polyester um Polyethylenterephthalat (PET), Polyethylennaphthalat (PEN), Polybutylenterephthalat (PBT), Polytrimethyleneterephthalat (PTT) und/oder Polycyclohexandimethanol-terephthalat (PCT) handelt. A film according to claim 1, characterized in that the polyester is polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT) and / or polycyclohexanedimethanol terephthalate (PCT).
3. Folie nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die gewichtsmittlere Molmasse Mw von 15000 bis 25000 g/mol beträgt. 3. A film according to claim 1 or 2, characterized in that the weight-average molecular weight M w of 15,000 to 25,000 g / mol.
4. Folie nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die gewichtsmittlere Molmasse Mw des Carbodiimids 17000 bis 22000 g/mol,besonders bevorzugt 17000 bis 21700 g/mol beträgt. 4. A film according to one or more of claims 1 to 3, characterized in that the weight average molecular weight M w of the carbodiimide 17000 to 22000 g / mol, more preferably 17000 to 21700 g / mol.
5. Solarzellenmodul, enthaltend mindestens eine Folie nach einem oder mehreren der Ansprüche 1 bis 4. 5. Solar cell module, comprising at least one film according to one or more of claims 1 to 4.
6. Verwendung einer Folie nach einem oder mehreren der Ansprüche 1 bis 4 zum Abdichten der Solarzelle. 6. Use of a film according to one or more of claims 1 to 4 for sealing the solar cell.
EP12748484.8A 2011-08-22 2012-08-20 Novel film for solar cells Withdrawn EP2748234A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12748484.8A EP2748234A1 (en) 2011-08-22 2012-08-20 Novel film for solar cells

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11178233A EP2562205A1 (en) 2011-08-22 2011-08-22 New films for solar cells
PCT/EP2012/066201 WO2013026828A1 (en) 2011-08-22 2012-08-20 Novel film for solar cells
EP12748484.8A EP2748234A1 (en) 2011-08-22 2012-08-20 Novel film for solar cells

Publications (1)

Publication Number Publication Date
EP2748234A1 true EP2748234A1 (en) 2014-07-02

Family

ID=46704669

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11178233A Withdrawn EP2562205A1 (en) 2011-08-22 2011-08-22 New films for solar cells
EP12748484.8A Withdrawn EP2748234A1 (en) 2011-08-22 2012-08-20 Novel film for solar cells

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP11178233A Withdrawn EP2562205A1 (en) 2011-08-22 2011-08-22 New films for solar cells

Country Status (10)

Country Link
US (1) US20150090318A1 (en)
EP (2) EP2562205A1 (en)
JP (1) JP2014529643A (en)
KR (1) KR20140039078A (en)
CN (1) CN103748145A (en)
BR (1) BR112014003142A2 (en)
CA (1) CA2845881A1 (en)
HK (1) HK1199466A1 (en)
RU (1) RU2014110879A (en)
WO (1) WO2013026828A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3260487A1 (en) 2016-06-22 2017-12-27 LANXESS Deutschland GmbH Hydrolytically stable compositions for films in solar cells

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10258676B2 (en) * 2011-09-06 2019-04-16 Agency For Science, Technology And Research Polypeptide vaccine

Family Cites Families (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3105845A (en) * 1954-09-14 1963-10-01 Shell Oil Co Diisocyanato aromatic compounds
DE1156401B (en) * 1960-05-24 1963-10-31 Bayer Ag Process for the preparation of carbodiimides
NL272088A (en) * 1960-12-02
DE1770495A1 (en) * 1968-05-25 1971-11-11 Bayer Ag Stabilized polyethylene glycol terephthalates
CA1056985A (en) * 1975-03-17 1979-06-19 Celanese Corporation Polyesters for extrusion applications
US4772649A (en) * 1986-12-18 1988-09-20 The Dow Chemical Company Polyesteramide and sufficient carbodiimide to impart improved compression set
DE4010959A1 (en) * 1990-04-05 1991-10-10 Rhein Chemie Rheinau Gmbh Stabilisation of polyester or polyester-urethane! polymers
DE4214193A1 (en) * 1992-04-30 1993-11-04 Rhein Chemie Rheinau Gmbh HYDROLYSTABLE POLYAMIDE
DE69602262T2 (en) * 1995-06-02 1999-09-23 Eastman Chem Co POLYESTER MADE FROM 2,6-NAPHTALENE DICARBONIC ACID WITH IMPROVED HYDROLYSIS RESISTANCE
JPH08333430A (en) * 1995-06-07 1996-12-17 Shin Etsu Chem Co Ltd Production of high-molecular-weight polycarbodiimide solution
US5910363A (en) * 1997-05-30 1999-06-08 Eastman Chemical Company Polyesters of 2,6-naphthalenedicarboxylic acid having improved hydrolytic stability
JP2002069751A (en) * 2000-06-16 2002-03-08 Toray Ind Inc Polyester monofilament and its use
KR20020030007A (en) * 2000-09-29 2002-04-22 힐커트 Hydrolysis-Resistant, Transparent, Biaxially Oriented Film Made From a Crystallizable Thermoplastic, and Process for Its Production
DE10126149A1 (en) * 2001-05-30 2002-12-05 Mitsubishi Polyester Film Gmbh Opaque colored, hydrolysis-resistant, biaxially oriented film made of a crystallizable thermoplastic and process for its production
DE10148306A1 (en) * 2001-09-29 2003-04-24 Mitsubishi Polyester Film Gmbh Hydrolysis-resistant, transparent, amorphous film made of a crystallizable thermoplastic and process for its production
JP2004238770A (en) * 2003-02-07 2004-08-26 Toray Ind Inc Hydrolysis-resistant polyester fiber for clean room wear
ES2337487T3 (en) * 2005-09-21 2010-04-26 Raschig Gmbh FORMULATIONS THAT INCLUDE STABILIZING AGENTS AGAINST HYDROLYSIS.
DE102007041055A1 (en) 2007-08-29 2009-03-05 Lanxess Deutschland Gmbh EVM in solar modules
WO2009123357A1 (en) 2008-04-02 2009-10-08 帝人デュポンフィルム株式会社 Film for solar cell backside protective film
JP2010031174A (en) * 2008-07-30 2010-02-12 Teijin Ltd Polyester resin composition and biaxially oriented film using the same
WO2010110119A1 (en) * 2009-03-26 2010-09-30 東レ株式会社 Polyester film for solar cells, solar cell back sheet using same, and solar cell
JP5423106B2 (en) * 2009-03-31 2014-02-19 東レ株式会社 Biaxially oriented polyester film
EP2415599B1 (en) * 2009-03-31 2016-07-13 Teijin Dupont Films Japan Limited Laminated polyester film for protection of solar cell undersides
JP5613760B2 (en) * 2009-05-15 2014-10-29 ライン・ケミー・ライノー・ゲーエムベーハー Method for producing carbodiimide
CN102449776A (en) * 2009-05-25 2012-05-09 东丽株式会社 Film for solar cell backsheet, solar cell backsheet using the same, and solar cell
EP2292712A1 (en) * 2009-09-02 2011-03-09 Rhein Chemie Rheinau GmbH Use of carbodiimides as colour stabiliser in melting adhesives
EP2476552A4 (en) * 2009-09-11 2013-04-10 Toray Industries Polyester film, and solar-cell back sheet and solar cell each including same
WO2011046566A1 (en) * 2009-10-16 2011-04-21 Rhein Chemie Rheinau Gmbh New formaldehyde scavengers
US8658285B2 (en) * 2010-06-09 2014-02-25 Toray Plastics (America), Inc. Optically clear UV and hydrolysis resistant polyester film
JP4881464B2 (en) * 2010-07-06 2012-02-22 帝人デュポンフィルム株式会社 Polyester film for solar cell back surface protective film
JP5914393B2 (en) * 2012-03-26 2016-05-11 富士フイルム株式会社 Polyester film and method for producing the same, solar cell backsheet and solar cell module

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013026828A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3260487A1 (en) 2016-06-22 2017-12-27 LANXESS Deutschland GmbH Hydrolytically stable compositions for films in solar cells
WO2017220289A1 (en) 2016-06-22 2017-12-28 Lanxess Deutschland Gmbh Hydrolysis stable compositions for films in solar cells

Also Published As

Publication number Publication date
WO2013026828A1 (en) 2013-02-28
BR112014003142A2 (en) 2017-02-21
US20150090318A1 (en) 2015-04-02
EP2562205A1 (en) 2013-02-27
JP2014529643A (en) 2014-11-13
RU2014110879A (en) 2015-09-27
CN103748145A (en) 2014-04-23
CA2845881A1 (en) 2013-02-28
HK1199466A1 (en) 2015-07-03
KR20140039078A (en) 2014-03-31

Similar Documents

Publication Publication Date Title
KR101365766B1 (en) Polymer Composition, Multi-layered film and Photovoltaic Modules comprising the same
DE112009001580B4 (en) Ethylene copolymer composition, film for sealing a solar cell element and their use
US9318634B2 (en) Vinylidene fluoride resin composition, resin film, back sheet for solar cells, and solar cell module
WO2012133515A1 (en) Polyester film, solar cell backsheet using same, and process for producing polyester film
US20230112640A1 (en) Hydrolysis stable compositions for films in solar cells
CN106903959B (en) A kind of solar energy backboard barrier film and preparation method thereof
WO2014057933A1 (en) Vinylidene fluoride resin composition, resin film, solar cell backsheet, and solar cell module
EP2748234A1 (en) Novel film for solar cells
JP5565520B1 (en) Resin composition for solar cell encapsulant, solar cell encapsulant and solar cell module
JP2013058746A (en) Polymer sheet for solar cell and manufacturing method therefor, and solar cell module
KR101711065B1 (en) Resin composition, production method therefor, polyethylene terephthalate film, and back sheet for solar cell module
CN113232340B (en) Preparation method of white hydrolysis-resistant anti-aging BOPET (biaxially-oriented polyethylene terephthalate) back plate film
EP2462627A1 (en) Evm granulated material as embedding material for solar modules, method for its production, adhesive foil as well as a solar module, method for its production and production device
US9673345B2 (en) Composition for solar cell sealing film, method for producing same and solar cell sealing film
CN114639748B (en) Super-toughness solar photovoltaic backboard and preparation method and application thereof
KR20160015567A (en) Polyester film for solar cell module and manufacturing method thereof
US20180212089A1 (en) Back sheet for solar cell module and solar cell module made thereof
KR20150055429A (en) Polyester film for solar cell module and manufacturing method thereof

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20140324

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20150105

REG Reference to a national code

Ref country code: HK

Ref legal event code: DE

Ref document number: 1199466

Country of ref document: HK

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20151125

REG Reference to a national code

Ref country code: HK

Ref legal event code: WD

Ref document number: 1199466

Country of ref document: HK