EP3976351A1 - Procede de polymerisation d'une composition en presence de copolymere a blocs - Google Patents
Procede de polymerisation d'une composition en presence de copolymere a blocsInfo
- Publication number
- EP3976351A1 EP3976351A1 EP20737517.1A EP20737517A EP3976351A1 EP 3976351 A1 EP3976351 A1 EP 3976351A1 EP 20737517 A EP20737517 A EP 20737517A EP 3976351 A1 EP3976351 A1 EP 3976351A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- block copolymer
- polymerization
- macroinitiator
- alkoxyamine
- monomers
- 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- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F287/00—Macromolecular compounds obtained by polymerising monomers on to block polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
- B29C64/129—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask
- B29C64/135—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/314—Preparation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/02—Polymerisation in bulk
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F293/00—Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2438/00—Living radical polymerisation
- C08F2438/02—Stable Free Radical Polymerisation [SFRP]; Nitroxide Mediated Polymerisation [NMP] for, e.g. using 2,2,6,6-tetramethylpiperidine-1-oxyl [TEMPO]
Definitions
- the present invention relates to a process for polymerizing a composition in the presence of at least one block copolymer, as well as to the products obtained by this polymerization process.
- the present invention also relates to the use of the products obtained using the polymerization process that is the subject of the invention.
- the block copolymers obtained by such processes exhibit particular properties linked to their morphologies subsequent to structuring in the form of nanodomains.
- phase diagrams The structuring of block copolymers and the associated morphologies are predictable by the phase diagrams. It is known, for example, to orient the type of nanostructure as a function of the chemical nature of the blocks, their molecular mass or even their number.
- the small sizes of the lamellae are favorable to the optical properties to the detriment of the mechanical properties.
- the size of the lamellae is governed by the molecular mass of the block copolymer. The higher the molecular mass, the larger the lamellae, which is favorable to the mechanical properties, but unfavorable to the optical properties, and vice versa. If the increase in the level of soft phase in a composition favorably influences the mechanical properties, a change in morphology is observed with the disappearance of lamellar morphologies for higher levels of soft phase penalizing the optical properties.
- the Applicant has discovered that it is possible to control the morphology and the size of the morphology (preferably lamellar) of a block copolymer induced by mass polymerization of a composition, regardless of their molecular weight.
- the invention relates to a process for the (bulk) polymerization of a composition, said composition comprising at least one macroinitiator, at least one block copolymer, at least one monomer (said monomer being wholly or partly different from or monomers present in the macroinitiator) comprising the following steps:
- mass polymerization is meant the process carried out between glass plates called “cast plates", the suspension process, the process by reactive or non-reactive extrusion, as well as any other process involving a container containing the constituents of the composition to be polymerized.
- the polymerization can be carried out anionically, by polycondensation, in a radical manner, with thermal or photochemical initiation.
- the polymerization is carried out in a radical manner.
- macroinitiator an oligomer or a polymer whose molecular mass by weight is between 5000 and 350,000 g / mol, preferably between 25,000 and 250,000 g / mol carrying at least one function capable of initiating a radical polymerization controlled by RAFT, ATRP, NMP, RITP, Cu (0) and preferably by NMP (nitroxide mediated polymerization).
- controlled radical polymerization is also meant the expression radical polymerization by reversible deactivation as defined by the IUPAC.
- the macroinitiator, the monomers, as well as the constituent monomers of the block copolymer (s) used in the process of the invention consist of the monomers chosen from the following list:
- they are alkyl acrylates and methacrylates, isobornyl acrylate and methacrylate, 4 ter butyl cyclohexyl acrylate, and / or substituted or unsubstituted styrene, and preferably of l butyl acrylate, isobornyl acrylate and methacrylate, 4 ter butyl cyclohexyl acrylate, methyl methacrylate and styrene.
- the initiator can be monofunctional or multifunctional. Preferably it is multifunctional. It can be represented as follows when it comes to radical polymerization:
- A is a hydrocarbon group with or without a heteroatom which may contain at least one metallic species, and is polymeric or oligomeric in nature.
- R 1 is a hydrocarbon group with or without heteroatom which may contain at least one metallic species
- R 2 is a hydrocarbon group with or without heteroatom which may contain at least one metallic species
- Z is an integer between 1 and 10 inclusive, preferably 2 to 4 inclusive and more preferably 2 to 3 inclusive.
- any type of mono-alkoxyamine can be used in the context of the invention, however, the mono-alkoxyamines of the following formula will be preferred:
- dial-alkoxyamines used for the synthesis of the macroinitiator (s)
- any type of dial-alkoxyamine can be used within the framework of the invention, however, preference will be given to the dial-alkoxyamines of the following formula:
- any type of tri-alkoxyamine can be used within the framework of the invention, however, the tri-alkoxyamine of the following formula, a product of addition of N- (2-methylpropyl) -N- (1 - diethylphosphono-2,2-dimethylpropyl) -0- (2-carboxyprop-2-yl) hydroxylamine on Pentaerythritol triacrylate:
- the block copolymer (s) used in the process of the invention can be multiblock, linear or star.
- the block copolymer used in the process of the invention is a diblock or triblock copolymer and preferably a triblock copolymer, and more preferably a linear triblock copolymer.
- the block copolymer (s) used in the process of the invention has at least one glass transition temperature block Tg less than 0 ° C and preferably less than -10 ° C and more preferably less than -30 ° C and at least one block of glassy transit temperature Tg greater than 20 ° C and preferably greater than 30 ° C.
- the block copolymer (s) used in the process of the invention is present in quantities by weight of between 0 and 90%, 0 excluded, and preferably between 2.5% and 30% by weight.
- the morphologies of the copolymers obtained using the process of the invention can be similar to the morphologies of any type authorized, or not, by the theoretical phase diagram (at thermodynamic equilibrium) of linear block and star block copolymers; such as lamellar, spherical, cylindrical, gyroidal, polyhedral, polygonal and preferably lamellar morphologies.
- the size of the domains and the morphology can be adjusted as a function of the block copolymer (s) used in combination with the characteristics of the macroinitiator (s).
- the invention also relates to the polymers obtained using the process of the invention.
- These polymers resulting from the process of the invention can be presented directly in the form of an object. These are, for example, plates obtained by the so-called “cast plates” process.
- the invention therefore also relates to these objects, and particularly to these cast plates, regardless of their thicknesses and dimensions.
- the invention also relates to the use of these cast plates, in the fields of glazing in general, more particularly of urban and sports glazing, automobiles, motorcycles, ballistics, or even electronics.
- the invention also relates to polymers and objects obtained by processes other than the cast plate process, whether they are polymers and objects obtained for example by the suspension (powders) or extrusion (granules or threads, extruded rods) process.
- the powders obtained can be used in many fields such as 3D printing by laser sintering, or additives making it possible to improve the mechanical properties and / or the processing properties of other polymers and in particular acrylic or fluorinated polymers.
- the invention therefore also relates to the use of these powders in these 2 fields.
- 3D printing the process of the invention can also be used in stereolithography, the polymerization being activated with at least one photoinitiator.
- the granules or threads, extruded rods obtained can be used in many fields as additives making it possible to improve the mechanical properties and / or the processing properties of other polymers and in particular the acrylic or fluorinated polymers, but also 3D printing (laser sintering or filament deposition).
- the invention therefore also relates to the use of these powders in these 2 fields.
- the synthesis of the macro initiators is carried out according to the protocol described in EP 1526138 in Example 1, except that in the present case only butyl acrylate is used as monomer.
- the functional compound used in this example is 1, 4-butanediol diacrylate allowing the synthesis of a di-functional macroinitiator but, to prepare macroinitiators of functionality> 2, those skilled in the art will know how to choose the appropriate functional compound (for example penta erythritol tri acrylate to obtain a macro initiator of functionality 3).
- the synthesis of polymers is carried out by pouring the reaction mixture into a mold followed by polymerization.
- the quantities indicated below correspond to those necessary to obtain sample 3, the data of which appear in Table 1.
- the process is carried out in 4 stages.
- the first step consists of dissolving 14.6 g of macroinitiator in 180.4 g of MMA (methyl methacrylate) with magnetic stirring for approximately 15 minutes in an Erlenmeyer flask.
- MMA methyl methacrylate
- 5 g of preformed block copolymers are added to the macroinitiator / MMA mixture with magnetic stirring until complete dissolution of the preformed copolymers, that is to say 2 hours.
- the third step consists in degassing the reaction solution under nitrogen for 30 minutes.
- the fourth step is the casting in a glass mold, dimension 25 cm by 25 cm with a PVC gasket 4 mm thick; before transfer to an oven for polymerization.
- the polymerization cycle used is as follows: a first temperature ramp from 25 ° C to 75 ° C in 50 min, followed by a second ramp up to 85 ° C reached in 520 min. A last ramp up to 125 ° C in 430 min followed by a plateau of 60 min at the same temperature allows to ensure complete polymerization of MMA.
- the mold is then opened to collect the plate.
- the percentage by mass of total polybutyl acrylate in the final sample is considered as the soft phase level. This takes into account the quantity of polybutyl acrylate supplied by the macroinitiator as well as the quantity supplied by the added preformed copolymer.
- Quantity of preformed copolymer 2.5% or 2.5 g
- Atomic Force Microscopy (AFM) tests have enabled the study of surface structuring.
- the samples were cut beforehand by ultramicrotomy at room temperature using a Leica EM UC7 ultramicrotome.
- the diamond knives used were a Diatome Diamond Knife Cryotrim 45 for the pre-cut and a Diatome Diamond Knife Ultra 45 for the final cut.
- the AFM device used for imaging is Bruker's MultiMode 8 Atomic Force Microscope in PeakForce QNM (Quantitative NanoMechanics) mode with a silicon nitride tip with a nominal radius of curvature of 2 nm (ScanAssist-AIR).
- the images used and presented in the figures are surface topography images (Height Images) of 5 by 5 micrometers with a spatial resolution at acquisition of 512 by 512 pixels.
- the software used for the measurements and image processing is Bruker's NanoScope Analysis version 1 .5.
- the inter-lamellar dimensions presented in figure 8 are averages calculated over a minimum of 12 measurements, error bars were calculated from the standard deviation.
- Table 1 summarizes the samples observed.
- the block copolymer introduced at the start when present is sample C of Table 2.
- control samples prepared without the presence of block copolymer were observed in AFM for two compositions containing respectively 7.5 and 15% by mass of soft phase (P (ABu-co-Sty) of the macroinitiator); Figures 1 and 2.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Graft Or Block Polymers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polymerisation Methods In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1905519A FR3096369B1 (fr) | 2019-05-24 | 2019-05-24 | Procédé de polymérisation d’une composition en présence de copolymère à blocs |
| PCT/FR2020/050827 WO2020240115A1 (fr) | 2019-05-24 | 2020-05-19 | Procede de polymerisation d'une composition en presence de copolymere a blocs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3976351A1 true EP3976351A1 (fr) | 2022-04-06 |
Family
ID=68987738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20737517.1A Withdrawn EP3976351A1 (fr) | 2019-05-24 | 2020-05-19 | Procede de polymerisation d'une composition en presence de copolymere a blocs |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20220275136A1 (fr) |
| EP (1) | EP3976351A1 (fr) |
| JP (1) | JP2022534234A (fr) |
| KR (1) | KR20220047213A (fr) |
| CN (1) | CN114127142A (fr) |
| FR (1) | FR3096369B1 (fr) |
| WO (1) | WO2020240115A1 (fr) |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4598123A (en) * | 1983-07-14 | 1986-07-01 | Unites States Steel Corporation | Impact modified methyl methacrylate polymer |
| DE19523585A1 (de) * | 1995-06-29 | 1997-01-02 | Basf Ag | Schlagzähe Formmasse aus Styrolpolymeren |
| FR2768739B1 (fr) * | 1997-09-19 | 2004-08-06 | Atochem Elf Sa | Polymere vinylaromatique choc obtenu a partir d'un caoutchouc porteur d'un groupement generateur d'un radical libre stable |
| DE50015539D1 (de) * | 1999-09-07 | 2009-03-19 | Bayer Materialscience Ag | Oligomere und polymere Telechelen |
| FR2807439B1 (fr) * | 2000-04-07 | 2003-06-13 | Atofina | Polymeres multimodaux par polymerisation radicalaire controlee en presence d'alcoxyamines |
| US8013062B2 (en) * | 2002-01-22 | 2011-09-06 | Arkema France | Method of producing and using materials which are reinforced against impact and which contain block copolymers that are obtained by means of controlled radical polymerization in the presence of nitroxides |
| FR2861394B1 (fr) | 2003-10-24 | 2006-01-20 | Arkema | Procede de preparation de polyalcoaxymines utilisables comme amorceurs pour la polymerisation radicalaire de (co)polymeres vivants polyfonctionnels |
| FR2879205B1 (fr) * | 2004-12-10 | 2007-09-21 | Arkema Sa | Procede de preparation de plaques renforcees a l'impact par polymerisation radiculaire controlee |
| CA2617547C (fr) * | 2005-08-02 | 2013-10-08 | Arkema Inc. | Procedes pour produire des polymeres aromatiques de vinyle au moyen de macro-initiateurs (meth)acryliques |
| FR2893621B1 (fr) * | 2005-11-21 | 2010-08-13 | Arkema | Procede de preparation d'un polymere vivant comprenant des unites methacryliques et/ou methacrylates |
| JP2009520074A (ja) * | 2005-12-16 | 2009-05-21 | アーケマ・インコーポレイテッド | 低表面エネルギーブロック共重合体の製造方法及び用途 |
| US7745535B2 (en) * | 2006-07-21 | 2010-06-29 | Arkema Inc. | Amphiphilic block copolymers |
| JP2009270020A (ja) * | 2008-05-08 | 2009-11-19 | Kaneka Corp | 樹脂粉体の製造方法 |
| FR2969633B1 (fr) * | 2010-12-23 | 2015-02-06 | Arkema France | Composition pour des plaques coulees nanostructurees reticulees |
| CN103443228B (zh) * | 2011-03-24 | 2016-05-18 | 3M创新有限公司 | 阻燃条带 |
| CN103562245B (zh) * | 2011-04-22 | 2015-11-25 | Lg化学株式会社 | 新的二嵌段共聚物、其制备方法以及使用其形成纳米图案的方法 |
| WO2012154393A2 (fr) * | 2011-05-12 | 2012-11-15 | Dow Global Technologies Llc | Procédé de polymérisation d'un stabilisant et procédé de fabrication de polymères à base de polyol |
| JP5554367B2 (ja) * | 2012-04-27 | 2014-07-23 | 富士フイルム株式会社 | レーザー彫刻用樹脂組成物、レーザー彫刻用フレキソ印刷版原版及びその製造方法、並びに、フレキソ印刷版及びその製版方法 |
| JP5554368B2 (ja) * | 2012-04-27 | 2014-07-23 | 富士フイルム株式会社 | レーザー彫刻用樹脂組成物、レーザー彫刻用フレキソ印刷版原版及びその製造方法、並びに、フレキソ印刷版及びその製版方法 |
| FR3029921B1 (fr) * | 2014-12-16 | 2018-06-29 | Arkema France | Procede de controle de la synthese d'un copolymere a blocs contenant au moins un bloc apolaire et au moins un bloc polaire et utilisation d'un tel copolymere a blocs dans des applications de nano-lithographie par auto-assemblage direct. |
| FR3075211B1 (fr) * | 2017-12-18 | 2020-11-20 | Arkema France | Composition de polymere (meth)acrylique, son procede de preparation et utilisation |
-
2019
- 2019-05-24 FR FR1905519A patent/FR3096369B1/fr not_active Expired - Fee Related
-
2020
- 2020-05-19 US US17/612,839 patent/US20220275136A1/en not_active Abandoned
- 2020-05-19 KR KR1020217040977A patent/KR20220047213A/ko not_active Ceased
- 2020-05-19 JP JP2021569547A patent/JP2022534234A/ja active Pending
- 2020-05-19 WO PCT/FR2020/050827 patent/WO2020240115A1/fr not_active Ceased
- 2020-05-19 CN CN202080038511.6A patent/CN114127142A/zh active Pending
- 2020-05-19 EP EP20737517.1A patent/EP3976351A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| KR20220047213A (ko) | 2022-04-15 |
| CN114127142A (zh) | 2022-03-01 |
| US20220275136A1 (en) | 2022-09-01 |
| FR3096369A1 (fr) | 2020-11-27 |
| JP2022534234A (ja) | 2022-07-28 |
| FR3096369B1 (fr) | 2022-01-14 |
| WO2020240115A1 (fr) | 2020-12-03 |
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