WO2013190225A1 - Procédé de fabrication d'un vitrage multiple à diffusion variable par couche pdlc et vitrage multiple à couche pdlc fabriqué selon ledit procédé - Google Patents
Procédé de fabrication d'un vitrage multiple à diffusion variable par couche pdlc et vitrage multiple à couche pdlc fabriqué selon ledit procédé Download PDFInfo
- Publication number
- WO2013190225A1 WO2013190225A1 PCT/FR2013/051411 FR2013051411W WO2013190225A1 WO 2013190225 A1 WO2013190225 A1 WO 2013190225A1 FR 2013051411 W FR2013051411 W FR 2013051411W WO 2013190225 A1 WO2013190225 A1 WO 2013190225A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- acrylate
- polymer
- seal
- liquid crystals
- joint
- Prior art date
Links
- 238000009792 diffusion process Methods 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 18
- 229920000642 polymer Polymers 0.000 claims abstract description 92
- 239000002243 precursor Substances 0.000 claims abstract description 70
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 55
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 55
- 239000000203 mixture Substances 0.000 claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 43
- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 claims abstract description 36
- 239000004593 Epoxy Substances 0.000 claims abstract description 31
- 239000000853 adhesive Substances 0.000 claims abstract description 29
- 230000001070 adhesive effect Effects 0.000 claims abstract description 29
- 239000011521 glass Substances 0.000 claims abstract description 29
- 238000003490 calendering Methods 0.000 claims abstract description 15
- 238000003825 pressing Methods 0.000 claims abstract description 8
- 238000000151 deposition Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 239000011159 matrix material Substances 0.000 claims description 49
- 229920000058 polyacrylate Polymers 0.000 claims description 28
- 238000006116 polymerization reaction Methods 0.000 claims description 18
- 238000004132 cross linking Methods 0.000 claims description 17
- 239000000178 monomer Substances 0.000 claims description 17
- 230000000379 polymerizing effect Effects 0.000 claims description 13
- 229920006037 cross link polymer Polymers 0.000 claims description 10
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims description 8
- 239000011324 bead Substances 0.000 claims description 8
- VOBUAPTXJKMNCT-UHFFFAOYSA-N 1-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound CCCCCC(OC(=O)C=C)OC(=O)C=C VOBUAPTXJKMNCT-UHFFFAOYSA-N 0.000 claims description 6
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 claims description 6
- PSGCQDPCAWOCSH-UHFFFAOYSA-N (4,7,7-trimethyl-3-bicyclo[2.2.1]heptanyl) prop-2-enoate Chemical compound C1CC2(C)C(OC(=O)C=C)CC1C2(C)C PSGCQDPCAWOCSH-UHFFFAOYSA-N 0.000 claims description 5
- 229940091853 isobornyl acrylate Drugs 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- WDFFWUVELIFAOP-UHFFFAOYSA-N 2,6-difluoro-4-nitroaniline Chemical compound NC1=C(F)C=C([N+]([O-])=O)C=C1F WDFFWUVELIFAOP-UHFFFAOYSA-N 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 abstract description 2
- 125000006850 spacer group Chemical group 0.000 description 10
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 8
- 239000000945 filler Substances 0.000 description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- CFVWNXQPGQOHRJ-UHFFFAOYSA-N 2-methylpropyl prop-2-enoate Chemical compound CC(C)COC(=O)C=C CFVWNXQPGQOHRJ-UHFFFAOYSA-N 0.000 description 4
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 4
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000003431 cross linking reagent Substances 0.000 description 3
- 150000003573 thiols Chemical class 0.000 description 3
- RUMACXVDVNRZJZ-UHFFFAOYSA-N 2-methylpropyl 2-methylprop-2-enoate Chemical compound CC(C)COC(=O)C(C)=C RUMACXVDVNRZJZ-UHFFFAOYSA-N 0.000 description 2
- -1 4-ethyl-2,6-difluorophenyl Chemical group 0.000 description 2
- COCLLEMEIJQBAG-UHFFFAOYSA-N 8-methylnonyl 2-methylprop-2-enoate Chemical compound CC(C)CCCCCCCOC(=O)C(C)=C COCLLEMEIJQBAG-UHFFFAOYSA-N 0.000 description 2
- LVGFPWDANALGOY-UHFFFAOYSA-N 8-methylnonyl prop-2-enoate Chemical compound CC(C)CCCCCCCOC(=O)C=C LVGFPWDANALGOY-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229920001651 Cyanoacrylate Polymers 0.000 description 2
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- NLCKLZIHJQEMCU-UHFFFAOYSA-N cyano prop-2-enoate Chemical class C=CC(=O)OC#N NLCKLZIHJQEMCU-UHFFFAOYSA-N 0.000 description 2
- GMSCBRSQMRDRCD-UHFFFAOYSA-N dodecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCOC(=O)C(C)=C GMSCBRSQMRDRCD-UHFFFAOYSA-N 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 229920006332 epoxy adhesive Polymers 0.000 description 2
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 2
- 239000005329 float glass Substances 0.000 description 2
- LNCPIMCVTKXXOY-UHFFFAOYSA-N hexyl 2-methylprop-2-enoate Chemical compound CCCCCCOC(=O)C(C)=C LNCPIMCVTKXXOY-UHFFFAOYSA-N 0.000 description 2
- LNMQRPPRQDGUDR-UHFFFAOYSA-N hexyl prop-2-enoate Chemical compound CCCCCCOC(=O)C=C LNMQRPPRQDGUDR-UHFFFAOYSA-N 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- PBOSTUDLECTMNL-UHFFFAOYSA-N lauryl acrylate Chemical compound CCCCCCCCCCCCOC(=O)C=C PBOSTUDLECTMNL-UHFFFAOYSA-N 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- FSAJWMJJORKPKS-UHFFFAOYSA-N octadecyl prop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C=C FSAJWMJJORKPKS-UHFFFAOYSA-N 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 2
- QIWKUEJZZCOPFV-UHFFFAOYSA-N phenyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC1=CC=CC=C1 QIWKUEJZZCOPFV-UHFFFAOYSA-N 0.000 description 2
- WRAQQYDMVSCOTE-UHFFFAOYSA-N phenyl prop-2-enoate Chemical compound C=CC(=O)OC1=CC=CC=C1 WRAQQYDMVSCOTE-UHFFFAOYSA-N 0.000 description 2
- LYBIZMNPXTXVMV-UHFFFAOYSA-N propan-2-yl prop-2-enoate Chemical compound CC(C)OC(=O)C=C LYBIZMNPXTXVMV-UHFFFAOYSA-N 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- SRJLZDPWUSOULH-UHFFFAOYSA-N 2-fluoro-4-(4-propylcyclohexyl)-1-[4-(4-propylcyclohexyl)phenyl]benzene Chemical group C1CC(CCC)CCC1C1=CC=C(C=2C(=CC(=CC=2)C2CCC(CCC)CC2)F)C=C1 SRJLZDPWUSOULH-UHFFFAOYSA-N 0.000 description 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000010539 anionic addition polymerization reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 150000002148 esters Chemical group 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000012985 polymerization agent Substances 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000012812 sealant material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
- E06B3/67—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2202/00—Materials and properties
- G02F2202/02—Materials and properties organic material
- G02F2202/022—Materials and properties organic material polymeric
- G02F2202/023—Materials and properties organic material polymeric curable
Definitions
- the invention relates to the field of electrically controllable glazings with variable optical properties and more particularly relates to a liquid crystal variable diffusion glazing, provided with a liquid crystal layer PDLC between two substrates.
- Glazes are known whose characteristics can be modified under the effect of a suitable power supply, especially the transmission, absorption, reflection in certain wavelengths of electromagnetic radiation, especially in the visible and / or in the infrared, or the light diffusion.
- the electrically controllable liquid crystal glazing can be used everywhere, in both the construction sector and the automotive sector, whenever the view through the glazing is to be prevented at given times.
- WO2012 / 028823 discloses a liquid crystal multiple glazing comprising:
- first and second float plane glass sheets held at the edges of their inner faces by an epoxy seal
- first and second electrodes in the form of transparent ITO electrically conductive layers provided with power supply,
- a PDLC (Polymer Dispersed Liquid Crystal) layer containing liquid crystals such as the compound 4 - ((4-ethyl-2,6-difluorophenyl) -ethinyl) -4 ' -propylbiphenyl and 2-Fluoro-4,4'-bis (trans-4-propylcyclohexyl) biphenyl sold, for example, by Merck under the reference MDA-00-3506, dispersed in microdroplets in polymeric material and containing spacers transparent, the PDLC layer reversibly alternating between a transparent state and a translucent state by applying an alternating electric field.
- a PDLC Polymer Dispersed Liquid Crystal
- the liquid crystal coating is performed using an operation called drip filling.
- the material that will form the adhesive joint is likewise applied in a cord unpolymerized form, directly along the edge of the glass sheet before or after removal of the liquid crystal layer with the unpolymerized matrix.
- the polymerizations of the material for the joint and the matrix are then carried out.
- An object of the invention is to develop a PDLC type liquid crystal multiple glazing with improved electrical and optical performance while maintaining manufacturing compatible with industrial requirements.
- the present invention firstly proposes a method of manufacturing a liquid crystal variable diffusion multiple glazing comprising:
- first and second sheets of glass preferably mineral glass rather than organic glass, held at the edges of their internal main faces by a crosslinked polymer-based adhesive seal defining a space known as an active space,
- first and second electrodes provided with power supply, the first electrode being transparent and / or the second electrode being transparent,
- the prewash is based on acrylate and is free of epoxy polymer precursor
- the composition is based on acrylate and preferably is free of epoxy polymer precursor.
- the Applicant first selected a PDLC in an acrylate-based polymer matrix in order to optimize the optical performance, in particular a blur in the transparent state ("ON" state, thus electrically powered) as low as possible. as possible.
- the Applicant then made a first glazing by following the steps as described in the prior art and found an electrical consumption of the abnormal glazing.
- the cause of the electrical malfunction of the product was the use of the epoxy adhesive seal which is chemically incompatible with the acrylate matrix and which surprisingly proves to be a bad electrical insulator. Or a conventional epoxy seal is electrically insulating once cured and therefore does not consume electricity. That is why the Applicant has identified that at least at the interface between the gasket and the matrix, the epoxy seal is not, or at least not sufficiently, crosslinked to be electrically insulating, which is at the origin electrical failures.
- the polymerization of the matrix may itself be hindered by the presence of the epoxy polymer precursors in the contact zone (the periphery of the matrix) with the bead.
- This first glazing does not all its promises, the Applicant then made a second glazing, corresponding to the invention, with a formulation based on acrylate polymer precursors for the joint, and without precursors of epoxy polymer.
- the choice of the same acrylate base is therefore the safer way to avoid the possibility of parasitic chemical reactions that may occur when elements of different families are used for the seal and the PDLC matrix.
- the power consumption of the second glazing drops drastically. Measurements of the electrical power consumed were made with a power meter on the first and second glazings (liquid crystal + acrylate matrix) with gaskets. epoxy and acrylate respectively. The results show that the electrical consumption of the second glazing with acrylate adhesive seal is considerably reduced and even equal to that of an identical glazing but without adhesive seal. On the other hand, the electrical consumption is definitely higher for the glazing with epoxy adhesive seal, typically at least two or three times higher.
- the Applicant has thus chosen an adhesive joint identical to that of the matrix, so acrylate, preferred to other adhesive joints known polyurethane or polyamide.
- Polymerization and crosslinking of the matrix and the joint are by supply of energy rather than air for a better control and a short duration, especially by UV.
- the pre-joint does not comprise a polymer precursor capable of forming an epoxy-acrylate copolymer and the composition preferably does not comprise a polymer precursor capable of forming an epoxy-acrylate copolymer.
- Prewash based on acrylate means that the pre-joint comprises, by weight total of polymer precursor (s), at least 50% by weight of acrylate polymer precursor (s).
- the prejoint contains, in total weight of polymer precursor (s), at least 60% or even at least 70% and preferably at least 80% or even at least 90% acrylate polymer precursor (s) and even 100%.
- acrylate-based composition means that the composition comprises, in total weight of polymer precursor (s), at least 50% of acrylate polymer precursor (s).
- the composition according to the invention contains, in total weight of polymer precursor (s), at least 60% or even at least 70% and preferably at least 80% of acrylate polymer precursor (s).
- the prey according to the invention comprises at least one acrylate oligomer (or more broadly an acrylate prepolymer, especially an acrylate polymer having reactive groups) and even at least one acrylate monomer.
- the composition comprises at least one acrylate oligomer (or more broadly a prepolymer) and even at least one acrylate monomer.
- the prey according to the invention may at least comprise, in total weight of polymer precursors, less than 5% by weight of precursor (s) of epoxy polymer or better still less than 1% by weight of precursor (s). of epoxy polymer.
- the composition according to the invention at least can comprise, in total weight of polymer precursors, less than 5% by weight of precursor (s) of epoxy polymer or better still less than 1% by weight. weight of precursor (s) of epoxy polymer.
- the pre-joint is free of precursor (s) of ionically polymerizing polymer and preferably the composition is precursor-free ( s) ionically polymerizing polymer.
- the prey according to the invention at least may comprise, by total weight of polymer precursors, less than 5% by weight of polymer precursor (s) polymer (s) ionic or better still less than 1% by weight. weight of precursor (s) of ionically polymerizing polymer.
- the prey according to the invention may contain one or more precursor (s) of polymer polymerizing in a radical chain distinct from an acrylate, but it is most particularly preferred that the pre-seal contain as precursor (s) polymer polymerizing chain by radical one or more acrylates.
- composition according to the invention may contain one or more polymer precursors polymer polymerizing radically different from acrylates, for example thiols.
- R1 is preferably H- or CH3-.
- the pre-joint thus preferably comprises, especially as the sole type of acrylate polymer precursors, acrylate and / or methacrylate monomers or acrylate and / or methacrylate monomer derivatives. For reasons of steric hindrance, another group which is too large could prevent other molecules to come and react with it.
- R2 optionally contains other function (s) acrylate.
- acrylate or methacrylate polymer precursors examples which may be mentioned as acrylate or methacrylate polymer precursors: ethylmethacrylate, butylmethacrylate, isobutylmethacrylate, hexylmethacrylate, isodecylmethacrylate, lauryl methacrylate, phenyl methacrylate, ethylacrylate, methyl acrylate, butylacrylate, isobutylacrylate, hexylacrylate, isodecylacrylate, lauryl acrylate, phenyl acrylate, isopropyl acrylate, isobutyl acrylate, octadecyl acrylate.
- the preform preferably does not include (additional) polymer precursor (s) which polymerize with the moisture of the air such as cyanoacrylates.
- seal polymer (or composition) precursors may further be preferred to select the seal polymer (or composition) precursors to obtain an acrylate polymer (from one or more acrylate units) rather than a copolymer (urethane-acrylate copolymer, etc.).
- the prejoint is preferably monocomponent that is to say that one does not need to apply two products.
- the pre-bite may preferably contain isobornyl acrylate.
- the pre-joint may comprise, in total pre-weight, at least 10% or even 30% by weight of polymer precursor (s) in particular (of type) acrylate.
- At least one filler typically a powder, for example an inorganic powder, preferably chosen from silica, alumina, calcium carbonate and their mixtures, a filler which serves, for example, to adjust the coefficient of thermal expansion, the viscosity, and to reduce the solubility of the liquid crystals in the joint,
- one or more crosslinking agents photoinitiator, thermal initiator, typically less than 5% by total weight of pre-joint.
- the seal (bead-shaped) is more adhesive than the matrix and is used in particular to maintain sufficiently the two glasses when they are minerals. Thus it is not necessarily the same acrylates.
- step (d) After step (d), it is extremely difficult, if not impossible, to peel off the glued glasses by the joint.
- the seal according to the invention is necessarily crosslinked.
- crosslinking of the joint is meant the formation of a three-dimensional network.
- the acrylate composition must meet other constraints such as controlled phase separation with liquid crystals to form a high performance liquid crystal PDLC layer.
- the matrix according to the invention can simply be polymerized or even partially crosslinked.
- R'1 is preferably H- or CH3-.
- the composition thus preferably comprises, especially as sole type of acrylate precursors, acrylate or methacrylate monomers or derivatives of acrylate or methacrylate monomers, this for reasons of steric hindrance, another group too large could prevent other molecules from come react with it.
- R'2 optionally contains other function (s) acrylate.
- acrylate or methacrylate polymer precursors examples which can be mentioned as acrylate or methacrylate polymer precursors: ethylmethacrylate, butylmethacrylate, isobutylmethacrylate, hexylmethacrylate, isodecylmethacrylate, lauryl methacrylate, phenyl methacrylate, ethylacrylate, methyl acrylate, butylacrylate, isobutylacrylate, hexylacrylate, isodecylacrylate, lauryl acrylate, phenyl acrylate, isopropyl acrylate, isobutyl acrylate, octadecyl acrylate.
- composition according to the invention contains a mixture of ethylhexyl acrylate, hexanediol diacrylate and acrylate oligomers.
- composition according to the invention does not preferably comprise (additional) polymer precursor which polymerizes with the humidity of air such as cyanoacrylates.
- composition according to the invention is preferably monocomponent, as the pre-joint.
- composition according to the invention also contains at least one crosslinking agent (photoinitiator, thermal initiator, etc.).
- crosslinking agent photoinitiator, thermal initiator, etc.
- An example of a composition that may be mentioned is the product MXM 035 sold by Nematel.
- composition according to the invention may comprise, in total weight of composition, from 20 to 80% by weight of precursor (s) of polymer (especially acrylate type) and preferably from 30 to 70% by weight.
- the crosslinking of the joint must not interfere with subsequent or simultaneous polymerization of the matrix or the polymerization of the matrix must not interfere with the subsequent crosslinking of the joint.
- composition comprises a polymerization agent and the pre-junction comprises a crosslinking agent activable in the same way preferably by supply of energy: photoinitiator, thermal activator ...
- the method according to the invention can provide, prior to assembly of the first and second glass sheets, the formation of the vent (s) of the bead formed in step a) defining each of the ends of the joint, by the discontinuous application of the adhesive seal material (pre-joint) and / or by continuous application of the adhesive seal material and creation of cord interruptions forming the vent (s).
- it preferably comprises the application of an additional material precursor (s) of polymer based on acrylate and forming a bond, including a bridge, between the ends of the cord.
- vents are positioned facing a first sheet edge (straight or curved sheet and preferably at least two other vents facing a second edge opposite the first edge, these edges corresponding to the edges from the calendering direction (direction perpendicular to the calendering rollers), in the case of calendering, it is also possible to make vents only on one side, which will be the end-of-calendering side.
- At least two vents are positioned opposite a third edge of the sheet adjacent to the first edge (and the second edge) and at least two other vents facing a fourth edge opposite the third edge.
- additional material based on acrylate means that the additional material comprises, by total weight of polymer precursor (s), at least 50% by weight of acrylate polymer precursor (s).
- the additional material according to the invention contains, in total weight of polymer precursor (s), at least 60% or even at least 70% and preferably at least 80% or even at least 90% of acrylate polymer precursor (s). and even 100%.
- the additional material may be free of epoxy polymer precursor or even more broadly free of ion polymerizing polymer precursor, particularly if this material is (at least in part) between the first and second electrodes.
- the additional material may be in said prejoint material thus forming continuity of material.
- the additional material according to the invention is not necessarily (at least in part) between the first and second electrodes, for example when the pre-edge is on the edge of the first and second electrodes.
- the crosslinking of the joint, the polymerization of the matrix and the crosslinking of additional material may be in a UV or even thermal step.
- the subject of the invention is also a multiple glazing unit with variable liquid crystal diffusion, preferably obtained as defined above, having:
- first and second sheets of glass preferably mineral glass, held at the edges of their internal faces by a crosslinked polymer-based adhesive seal delimiting a so-called active space space,
- first and second electrodes provided with power supply, and in the active space, between the first and second electrodes (directly or indirectly), a PDLC layer containing liquid crystals in the form of (micron) droplets dispersed in a polymer matrix, the PDLC layer being in contact with the gasket adhesive and preferably comprising spacers,
- the crosslinked seal being free of epoxy polymer
- the crosslinked polymer of the seal being preferably an acrylate-based polymer
- the matrix being free of epoxy polymer and the polymer of the matrix being an acrylate-based polymer
- matrix containing an acrylate-based polymer means that the matrix comprises, in total weight of polymer, at least 50% by weight of acrylate polymer.
- the matrix according to the invention contains, by total weight of polymer, at least 60% or even at least 70% and preferably at least 80% of acrylate polymer.
- crosslinked polymer acrylate seal means that the seal comprises, in total weight of polymer, at least 50% of acrylate polymer.
- the seal according to the invention contains, by total weight of polymer, at least 60% or even at least 70% and preferably at least 80 and even 90% of acrylate polymer and even 100%.
- the seal according to the invention comprises, as polymer (s), one or more acrylate polymers, in particular a mixture of acrylate and / or a mixture of methacrylate,
- the seal comprises an acrylate polymer which is derived from isobornyl acrylate,
- the matrix according to the invention comprises, as polymer (s), one or more acrylate polymers especially derived from ethylhexylacrylate and hexanediol diacrylate.
- the crosslinked seal does not cause electrical over-consumption and the performance of the glazing is satisfactory by the choice of the acrylate-based matrix.
- the seal according to the invention at least may comprise, by total weight of polymers, less than 5% by weight of epoxy polymer or better still less than 1% by weight. of epoxy polymer.
- the seal according to the invention can even comprise, by total weight of polymers, less than 5% by weight of polymer (s) polymerizing ionically or better still less than 1% by weight of polymer (s) polymerizing ionically.
- the matrix according to the invention at least may comprise, by total weight of polymers, less than 5% by weight of epoxy polymer or better still less than 1% by weight of epoxy polymer.
- the matrix according to the invention may even comprise, by total weight of polymers, less than 5% by weight of polymer (s) polymerizing ionically or better still less than 1% by weight of polymer (s) polymerizing ionically.
- the seal (of given width L) may preferably be interrupted in its width by one or more "vents" defining each of the seal ends, and for each vent an additional material (added after pressing / calendering) forms a continuity in particular a bridge between the ends of the joint, in particular in said joint material thus forming continuity of material.
- the application of the additional material is done after calendering or pressing and before polymerization of the matrix and / or crosslinking of the adhesive.
- the additional material cross-links together with the material of the joint and therefore for the sake of simplicity the same material is chosen.
- liquid crystal variable diffusion multiple glazing as previously defined as glazing in vehicles or buildings.
- the glazing according to the invention can be used in particular:
- the glazing according to the invention can form all or part of a partition and other window (type transom etc.).
- the spacers in the PDLC layer may preferably be made of a transparent plastic material.
- the spacers determine the thickness of the liquid crystal layer.
- the spacers are preferably in terms of index optical close to the optical index of the matrix of the liquid crystal layer.
- the spacers are for example in the form of beads.
- the electrodes are not external faces for reasons of safety and to reduce the operating voltage.
- FIG. 1 represents a schematic cross-sectional view of a variable diffusion multiple glazing unit by PDLC according to the invention
- FIG. 2 represents a schematic top view of the variable diffusion multiple glazing unit PDLC according to the invention, showing in particular the seal and the vents,
- FIG. 3 is a diagrammatic plan view of the variable-diffusion PDLC multiple glazing unit according to the invention showing in particular the seal and the vents in a variant of FIG. 2,
- FIG. 4 shows a schematic top view of the manufacture of variable diffusion multiple glazing by PDLC according to the invention showing in particular the seal and the vents.
- FIG. 1 shows the design of the multiple glazing with PDLC layer according to the invention in a first embodiment.
- ITO layers have a surface electrical resistance of between 5 ⁇ / D and 300 ⁇ / D.
- the layers made of ITO it is also possible to use for the same purpose for the first and / or the second electrode other layers of electrically conductive oxide or silver stacks whose surface resistance is comparable.
- a liquid crystal layer 5 is located between the electrode layers 3 and 4.
- the liquid crystal layer 5 is PDLC and contains liquid crystals in the form of microdroplets dispersed in a polymer matrix.
- the PDLC layer 5 also contains spherical spacers made of transparent polymer.
- the thickness of the layer 5 is for example 20 ⁇ and can vary from 5 to 60 ⁇ typically, preferably 5 ⁇ , better 8 ⁇ , at 30 ⁇ .
- liquid crystals such as the compound 4 - ((4-ethyl-2,6-difluorophenyl) -ethinyl) -4'-propylbiphenyl and 2-fluorine-4,4'-bis (trans-4-propylcyclohexyl) biphenyl for example sold by Merck under the reference MDA-00-3506.
- liquid crystal layer PDLC 5 is surrounded by an adhesive seal 7 of crosslinked polymer which serves at the same time to connect the glass sheets 1, 1 'endowed with the electrodes firmly and permanently.
- the sealant material like the matrix, contains an acrylate-based polymer and is epoxy-free to avoid electrical over-consumption.
- the adhesive adhesive material is obtained from a mixture of isobornyl acrylate monomers, 2-hydroxyethyl methacrylate phosphate and acrylate oligomers, for example forming at least 10% by weight of the pre-cure or at least 30%, and which also contains a filler (mineral powder) and a photoiniator for its polymerization and UV curing. After crosslinking, the monomers and oligomers are polymerized and therefore not present as separate molecules.
- Loxeal 30-60 sold by the company Solano can be used as an acrylate-based, UV-curable premix, if necessary by adjusting the filler content to adjust its viscosity.
- the matrix is obtained from a mixture of ethylhexyl acrylate, hexanediol diacrylate and oligomers of acrylates and optionally thiols with a photoiniator for its UV polymerization.
- the composition of the matrix is, for example, the product MXM 035 sold by Nematel.
- the matrix represents from 30 to 70% by total weight of the PDLC layer.
- the seal 7 is of given width L and interrupted by a plurality of vents 81 to 84 defining each of the seal ends 71 to 74 '.
- the seal 7 is interrupted by two vents 81 to 82 facing a first edge of the glazing and two other vents 83, 84 facing a second edge opposite the first edge, these edges corresponding to the edges of the assembly direction of the glasses by calendering.
- an additional material 7 ' preferably adhesive forms a bond, for example a bridge between the adjacent ends of the seal, preferably based on acrylate polymer and free of epoxy or even said joint material thus forming material continuity as shown in Figure 3.
- this liquid crystal glazing 100 In the "OFF" state, that is to say before the application of a voltage, this liquid crystal glazing 100 is translucent, i.e. it transmits optically but is not transparent. As soon as a sinusoidal voltage is applied between the two electrodes, the PDLC layer goes to the transparent state, that is to say the one in which the vision is not prevented.
- the electrically controllable PDLC glazing is of the mirror, semi-reflecting or tinted type, etc.
- the functional element (s) necessary for this purpose is added and / or one adapts one of the electrodes (becoming for example semi-reflective or reflecting type mirror) and / or the color of one of the glass sheets.
- the electrically controllable liquid crystal glazing is manufactured using a method described in detail below.
- float glass sheets according to the invention are coated in successive sputtering chambers with a transparent layer of ITO. an approximate thickness of 100 nm. Other transparent layers can be used alternatively.
- Two separate glass sheets of equal size and the desired dimensions are cut from a large sheet of glass coated in this manner and prepared for further processing.
- the two separate glass sheets cut to the desired measurements first undergo a washing operation.
- composition of the PDLC liquid crystal layer mixed with the spacers is then applied to the first electrode without covering the peripheral edges of the sheet.
- the application is carried out for example drop by drop, the amount poured can thus be adjusted finely.
- the composition contains a mixture of ethylhexyl acrylate, hexanediol diacrylate and oligomers of acrylates and optionally thiols, with a photoiniator for its UV polymerization.
- the composition of the matrix is, for example, the product MXM 035 sold by Nematel.
- Other examples of compositions based on acrylate and mercaptan are described in application US 4891 152.
- a so-called pre-jointed material containing precursors of the crosslinked polymer forming the seal is likewise applied directly along the edge of the glass sheet 24 before or after the deposition of the composition of the PDLC liquid crystal layer.
- the preform forms a bead that is or will be in contact with the composition of the PDLC liquid crystal layer.
- the seal adhesive material contains a mixture of isobornylacrylate, 2-hydroxyethyl methacrylate phosphate and oligomers of acrylates, for example forming at least 10% by weight of the preja or even at least 30% by weight of the pre-joint, and which also contains a filler (mineral powder) and a photoinitiator for its polymerization and UV crosslinking.
- vents 81 to 84 of the size and distribution joint adapted to evacuate the excess liquid crystal layer and / or to evacuate the air, the vents 81 at 84 each defining two adjacent ends 71 to 74 'of joint 7.
- the application of the joint material is either discontinuous or continuous, and then followed by a creation of the vents (by removal of material 7 ).
- At least two vents are preferably positioned on the front edge of the calendering and at least two vents on the rear edge of the calendering.
- the number of vents depends on the size of the glazing.
- the width of the vents is for example 8 mm.
- the second glass is placed on the first and the calendering (or alternatively pressing) is carried out.
- the pre-joint 7 and the PDLC liquid crystal layer 5 are compressed to the thickness of the spacers.
- the vents 81 to 84 thus serve to evacuate the air as it is calendered, and / or to evacuate any excess liquid crystal layer.
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Dispersion Chemistry (AREA)
- Structural Engineering (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Liquid Crystal (AREA)
- Sealing Material Composition (AREA)
- Joining Of Glass To Other Materials (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2877652A CA2877652C (fr) | 2012-06-22 | 2013-06-17 | Procede de fabrication d'un vitrage multiple a diffusion variable par couche pdlc et vitrage multiple a couche pdlc fabrique selon ledit procede |
CN201380032829.3A CN104380184A (zh) | 2012-06-22 | 2013-06-17 | 通过pdlc层的可变漫射的多层装配玻璃的制造方法以及根据所述方法制造的具有pdlc层的多层装配玻璃 |
KR1020157001368A KR20150023038A (ko) | 2012-06-22 | 2013-06-17 | Pdlc 층에 의해 가변 확산성을 갖는 다중 글레이징 유닛의 제조 방법 및 그 방법에 의해 제조된 pdlc 층을 갖는 다중 글레이징 유닛 |
US14/409,941 US9726925B2 (en) | 2012-06-22 | 2013-06-17 | Method for producing a multiple glazing unit with variable diffusion by PDLC layer and a multiple glazing unit with a PDLC layer produced according to said method |
EP13737328.8A EP2864835A1 (fr) | 2012-06-22 | 2013-06-17 | Procédé de fabrication d'un vitrage multiple à diffusion variable par couche pdlc et vitrage multiple à couche pdlc fabriqué selon ledit procédé |
MX2014016076A MX357817B (es) | 2012-06-22 | 2013-06-17 | Método para producir una unidad de acristalamiento múltiple con difusión variable por capa de pdlc y una unidad de acristalamiento múltiple con una capa de pdlc producida de acuerdo con el método. |
JP2015517825A JP2015520422A (ja) | 2012-06-22 | 2013-06-17 | Pdlc層による拡散が可変の複層グレージングユニットの製造方法及び該方法により製造したpdlc層を有する複層グレージング |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR1255955A FR2992434B1 (fr) | 2012-06-22 | 2012-06-22 | Procede de fabrication d'un vitrage multiple a diffusion variable par couche pdlc, un tel vitrage multiple a couche pdlc |
FR1255955 | 2012-06-22 |
Publications (1)
Publication Number | Publication Date |
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WO2013190225A1 true WO2013190225A1 (fr) | 2013-12-27 |
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PCT/FR2013/051411 WO2013190225A1 (fr) | 2012-06-22 | 2013-06-17 | Procédé de fabrication d'un vitrage multiple à diffusion variable par couche pdlc et vitrage multiple à couche pdlc fabriqué selon ledit procédé |
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Country | Link |
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US (1) | US9726925B2 (fr) |
EP (1) | EP2864835A1 (fr) |
JP (1) | JP2015520422A (fr) |
KR (1) | KR20150023038A (fr) |
CN (1) | CN104380184A (fr) |
CA (1) | CA2877652C (fr) |
FR (1) | FR2992434B1 (fr) |
MX (1) | MX357817B (fr) |
WO (1) | WO2013190225A1 (fr) |
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CN108700765A (zh) * | 2016-07-19 | 2018-10-23 | 积水化学工业株式会社 | 调光叠层体以及调光叠层体用树脂间隔物 |
WO2018195458A1 (fr) | 2017-04-20 | 2018-10-25 | Cardinal Ig Company | Structures de vitrage de confidentialité haute performance |
CA3069532A1 (fr) | 2017-07-13 | 2019-01-17 | Cardinal Ig Company | Configurations de connexion electrique de structures de vitrage opaque |
CA3081612A1 (fr) | 2017-11-06 | 2019-05-09 | Cardinal Ig Company | Systeme de vitrage opaque a conducteur electrique distinct |
US11409176B2 (en) * | 2017-12-26 | 2022-08-09 | Heliotrope Europe S.L. | Gel electrolyte precursor compositions, electrochromic devices including gel electrolytes, and manufacturing methods thereof |
WO2019217693A1 (fr) | 2018-05-09 | 2019-11-14 | Cardinal Ig Company | Vitrage de confidentialité à commande électrique avec dispositif d'entraînement de recapture d'énergie |
CA3109567A1 (fr) | 2018-08-17 | 2020-02-20 | Cardinal Ig Company | Structure de vitrage opaque dotee de decalages de vitre asymetriques pour configurations de connexion electrique |
US11474385B1 (en) | 2018-12-02 | 2022-10-18 | Cardinal Ig Company | Electrically controllable privacy glazing with ultralow power consumption comprising a liquid crystal material having a light transmittance that varies in response to application of an electric field |
WO2020163836A1 (fr) | 2019-02-08 | 2020-08-13 | Cardinal Ig Company | Dispositif d'excitation à faible puissance pour les vitrages d'intimité |
JP7310247B2 (ja) * | 2019-04-12 | 2023-07-19 | 凸版印刷株式会社 | 調光シート、および、調光シートの製造方法 |
WO2020223277A1 (fr) | 2019-04-29 | 2020-11-05 | Cardinal Ig Company | Commande électrique de pilotage échelonné d'une pluralité de structures de vitrage de confidentialité pouvant être commandées électriquement |
WO2020223281A1 (fr) | 2019-04-29 | 2020-11-05 | Cardinal Ig Company | Détection et commande de courant de fuite pour une ou plusieurs structures de vitrage de confidentialité pouvant être commandées électriquement |
JP7530387B2 (ja) | 2019-04-29 | 2024-08-07 | カーディナル アイジー カンパニー | 1つ以上の電気的に制御可能なプライバシーガラス構造を動作させるためのシステムおよび方法 |
CN113710474A (zh) | 2020-03-13 | 2021-11-26 | 法国圣戈班玻璃厂 | 具有投影元件和功能元件的复合玻璃板 |
DE102021203171B4 (de) | 2021-03-30 | 2023-04-27 | Siemens Healthcare Gmbh | Medizinisches Bildgebungsgerät und Verfahren zum Betrieb eines medizinischen Bildgebungsgeräts |
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- 2013-06-17 JP JP2015517825A patent/JP2015520422A/ja active Pending
- 2013-06-17 KR KR1020157001368A patent/KR20150023038A/ko not_active Application Discontinuation
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- 2013-06-17 CN CN201380032829.3A patent/CN104380184A/zh active Pending
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Also Published As
Publication number | Publication date |
---|---|
CN104380184A (zh) | 2015-02-25 |
CA2877652A1 (fr) | 2013-12-27 |
EP2864835A1 (fr) | 2015-04-29 |
KR20150023038A (ko) | 2015-03-04 |
MX2014016076A (es) | 2015-10-29 |
CA2877652C (fr) | 2019-09-24 |
US20150138489A1 (en) | 2015-05-21 |
US9726925B2 (en) | 2017-08-08 |
FR2992434B1 (fr) | 2014-06-13 |
FR2992434A1 (fr) | 2013-12-27 |
JP2015520422A (ja) | 2015-07-16 |
MX357817B (es) | 2018-07-25 |
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