EP3408321A1 - Materiau hydrogel utilisable pour la sequestration de composes organophosphores - Google Patents
Materiau hydrogel utilisable pour la sequestration de composes organophosphoresInfo
- Publication number
- EP3408321A1 EP3408321A1 EP17702072.4A EP17702072A EP3408321A1 EP 3408321 A1 EP3408321 A1 EP 3408321A1 EP 17702072 A EP17702072 A EP 17702072A EP 3408321 A1 EP3408321 A1 EP 3408321A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- repeating unit
- polymerization
- polymer
- use according
- monomer
- 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- Withdrawn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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
- A61L2/16—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using chemical substances
- A61L2/23—Solid materials, e.g. granules, powders, blocks or tablets
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3769—(Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
Definitions
- the present invention relates to the use of hydrogel materials having specific properties for the sequestration of organophosphorus chemical compounds, to a method of trapping or sequestering such compounds as well as to specific hydrogel materials for the sequestration of such compounds.
- these hydrogel materials can be used in the decontamination of media including organophosphorus compounds, for example, in certain environments, such as the chemical industry, agriculture, or in industries that fight against chemicals. chemical gas attacks.
- the organophosphorus compounds present in these environments are in the form of organic compounds having a proven toxicity for the human body, the average lethal concentration by inhalation being able to be at least 10 mg.min.m ⁇ 3 , as described in J.Org.Chem.1996, 61, 8407-8413. Indeed, these compounds may be involved in the mechanism of inhibition of acetylcholinesterase preventing muscle relaxation and can cause death by asphyxiation.
- These compounds can be included in the formulation of insecticides, pesticides or chemical combatants and are conventionally in the form of water-soluble oily organic compounds which, once dispersed in the environment, have a half-life in water ranging from 5 hours to 80 hours, with however, the risk that degradation products by hydrolysis in water remain toxic for a period of 30 to 60 days.
- decontaminating systems are generally in the form of liquids or powders in the form of sprays or in the form of a liquid soaking a sponge, the active principles causing the decontamination may be of inorganic or organic origin.
- alkaline solutions such as sodium hydroxide solutions (NaOH), potassium hydroxide solutions (KOH), ammonium hydroxide solutions (NH 4 OH), which were the first decontaminant solutions to be studied in the late 1950s, because of their effectiveness against organophosphorus combat compounds, such as Sarin gas or Soman gas, which fall into the category of neurotoxicants.
- type G such systems being described in Act.Chem.Scand. 1957, 11, 1131-1142.
- ⁇ -nucleophilic organic compounds that is to say a compound comprising a nucleophilic group adjacent to an atom carrying an electron doublet, which doublet has the effect of reinforcing the nucleophilic nature of the compound.
- oximate compounds such as 2,3-butanedione monoxime.
- amidoximate groups thus generated have a high nucleophilic character with a pKa of the order of 11 to 12 (against 8, for conventional oximes), as described in Ind.Eng.Chem.Res. 2009, 48, 1650-1659, the resulting polymers having a high efficiency in dispersion in water with respective half-life durations of 5 minutes and less than 3 minutes for VX gas and sarin gas.
- the invention relates to the use, for the sequestration or trapping of at least one organophosphorus compound, of a hydrogel material comprising a polymer and an aqueous phase comprising an agent capable of generating the sequestration of a compound organophosphorus in the hydrogel material, said agent being, advantageously, a salt selected from alkali halides, alkaline phosphates, alkali sulfates and mixtures thereof, said aqueous phase being trapped in the polymer.
- hydrogel material it is specified that it is a material in the form of a gel consisting of a polymer in which is retained an aqueous phase, which classically corresponds to the polymerization medium (ie say the medium in which the polymerization took place to form the constituent polymer of the hydrogel material). Because of the flexibility of the polymer network constituting the hydrogel, such a material is conventionally capable of absorbing a mass of water that can exceed 100 times the mass of the polymeric building.
- polymer conventionally means a compound consisting of the linking of one or more repeating units.
- repeating unit is meant, conventionally, within the meaning of the invention, a divalent organic group (that is to say a bridging group) derived from a monomer after polymerization thereof, the formula of the repeating unit corresponding to that of the monomer whose double bond has been replaced by two hydrogen atoms carried by the carbon atoms carrying the double bond in the monomer.
- a divalent organic group that is to say a bridging group
- the constituent polymer of the hydrogel material is a hydrophilic polymer, ie it is able to store water, such a property being made possible by the presence of polar groups capable of forming hydrogen bonds, a fortiori, in this case, with water.
- the polymer advantageously comprises groups capable of forming hydrogen bonds and, more specifically, groups comprising one or more hydrogen atoms bonded to atoms more electronegative than hydrogen, such as nitrogen atoms, oxygen atoms, halogen atoms, such as fluorine.
- the polymer may comprise groups selected from amide groups, -OH groups, carboxylic groups and / or carboxylate groups.
- the polymer may advantageously be a polymer comprising, in its chain, at least one repeating unit resulting from the polymerization of a nonionic monomer and at least one repeating unit.
- a nonionic monomer is a monomer devoid of at least one ionic group, that is to say a group carrying an anionic charge or a charge cationic associated with a counter-ion of opposite charge while, conversely, an ionic monomer is a monomer bearing one or more ionic groups as defined above.
- the repeating unit resulting from the polymerization of a nonionic monomer may be a unit resulting from the polymerization of a vinyl monomer, and more specifically, from a monomer chosen from styrene monomers, acrylate monomers (and more particularly, alkyl acrylate monomers), the methacrylate monomers (and more particularly, the alkyl methacrylate monomers), the acrylamide monomers (and more specifically, the alkyl acrylamide monomers), with, for preference, the acrylamide monomers, and even more specifically, alkyl acrylamide monomers.
- the repeating unit resulting from the polymerization of an alkyl acrylamide monomer has the following formula (I):
- R 1 , R 2 , R 3 , R 4 and R 5 correspond, independently of each other, to a hydrogen atom or an alkyl group, and preferably, with the proviso that the at least one of R 3 or R 3 groups is an alkyl group.
- repeating unit resulting from the polymerization of an alkyl acrylamide monomer has the following formula (II):
- this repeating unit being derived from the polymerization of the N, N'-dimethylacrylamide monomer.
- the repeating unit resulting from the polymerization of a nonionic monomer is preferably comprised in the polymer in a proportion of at least 50% by weight relative to the total weight of the polymer.
- the repeating unit resulting from the polymerization of an ionic monomer may be a unit resulting from the polymerization of a vinyl monomer bearing at least one ionic group, such as: an anionic group, and more specifically, a carboxylate group, a phosphonate group (resulting from the deprotonation of a phosphonic acid group) or a sulphonate group (derived from the deprotonation of a sulphonic acid group); or
- a cationic group and more specifically, an ammonium group (resulting from the protonation of an amino group).
- the repeating unit resulting from the polymerization of an ionic monomer is a repeating unit resulting from the polymerization of a specific (meth) acrylate monomer corresponding to the following formula (III):
- R 6 , R 7 , R 8 correspond, independently of one another, to a hydrogen atom or an alkyl group and X represents a cation, such as an alkaline cation, an ammonium cation.
- the repeating unit resulting from the polymerization of an ionic monomer is preferably comprised in the polymer, at most 50% by weight relative to the total weight of the polymer.
- a polymer capable of advantageously entering the constitution of the hydrogel material of the invention is a polymer comprising a repeating unit of formula (I) as defined above and a repeating unit of formula (III) as defined above and, still more specifically, a polymer comprising a repeating unit of formula (II) and a repeating unit of formula (IV).
- the aqueous phase comprising the agent capable of generating the sequestration of an organophosphorus compound in the hydrogel material may correspond to:
- said aqueous phase having substituted all or part of said polymerization medium may be ultrapure water.
- the agent it may be advantageously a salt selected from alkali halides, alkaline phosphates, alkali sulfates and mixtures thereof, such as, for example, potassium fluoride.
- the hydrogel material is advantageously in the form of a membrane, for example, a flat membrane having a thickness ranging from 1 mm to 2 cm, the membrane being able to perform a patch function.
- the hydrogel materials usable according to the invention can be prepared by a process comprising the following steps:
- the monomer or monomers mentioned above may be monomers as defined above in the context of the definition of the hydrogel materials of the invention.
- This polymerization step is carried out advantageously in the presence of a radical polymerization initiator.
- a radical polymerization initiator is a chemical compound capable of initiating a polymerization reaction by generation of free radicals. From the point of view of the reaction mechanism, the initiator binds to a monomer via a vinyl function and thereby activates the latter by electron transfer. The new compound formed will continue its growth by binding and activating another monomer present in the medium and so on, until all the monomers have reacted or even until the neutralization of the free radicals.
- the radical polymerization initiator may be thermally activated (in which case it is a thermal initiator) or by irradiation with a specific wavelength (in which case it is a photoinitiator).
- thermal initiator examples include persulfate compounds, such as potassium persulfate, sodium persulfate or ammonium persulfate.
- the radical polymerization initiator may be included in the aqueous polymerization medium in a proportion of 0.2% to 5% by mole relative to the total number of moles of monomers.
- the polymerization step may be carried out by the following operations:
- the prepolymer it is understood that it is a polymer being formed (that is to say for which the polymerization is not completed), it being understood that this prepolymer must have a value viscosity sufficiently low to allow its removal in the subsequent operation and its transfer during the last operation.
- the polymerization medium is previously degassed by bubbling with an inert gas and that the reactor in which the prepolymerization operation takes place or the chamber in which the operation takes place Transfer agents are first purged with the same inert gas, which may be argon or nitrogen.
- the appropriate time for the formation of the prepolymer is preferably the time after pooling of the reagents, beyond which the prepolymer has reached a viscosity threshold, beyond which syringe sampling is no longer possible. , this appropriate duration may be a few hundred seconds, for example, 150 seconds ⁇ 10 seconds.
- the mold of the transfer operation has a shape corresponding to the desired shape of the hydrogel material, for example, a flat membrane shape and may be made of a silicone material or a polytetrafluoroethylene (PTFE) material.
- the hydrogel material is demolded, to then undergo the contacting step b).
- This contacting step b) can be carried out in a container, for example made of PTFE, filled with an aqueous medium (for example, ultrapure water) comprising the agent capable of generating the sequestration of an organophosphorus compound in the hydrogel material, such as a salt selected from alkali halides, alkaline phosphates, alkali sulfates and mixtures thereof.
- an aqueous medium for example, ultrapure water
- an agent capable of generating the sequestration of an organophosphorus compound in the hydrogel material such as a salt selected from alkali halides, alkaline phosphates, alkali sulfates and mixtures thereof.
- such a salt will contribute to increasing the ionic strength of the swollen hydrogel material following the absorption of the aqueous solution, thereby increasing the sequestering power of the hydrogel material vis-à-vis of the organophosphorus compound by osmotic pressure.
- this type of salt may have neutralizing properties vis-à-vis certain organophosphorus compounds, such as Sarin gas or VX gas.
- the amount of the aforementioned agent used can be up to 10% by weight of the aqueous medium.
- the aqueous medium may, for its part, be used in a mass quantity ranging from 4 to 17 times the mass of the dry hydrogel material, that is to say the mass of the hydrogel material without water.
- hydrogel materials used according to the invention are, by their ingredients, capable of sequestering or trapping organophosphorus compounds.
- the invention also relates to a method of trapping an organophosphorus compound present in a contaminated zone in said organophoric compound comprising a step of contacting a hydrogel material as defined above for use with the contaminated zone followed by a step of removing the material from said zone, whereby the zone is thus depleted or even devoid in said organosphosphorus compound.
- the contacting step can consist in depositing the hydrogel material, for example, in the form of a membrane, on the contaminated zone and in removing it easily and quickly, without it being necessary to resort to suction systems.
- hydrogel materials subject of the use and the method of the invention some are new.
- the invention also relates to a hydrogel material comprising a polymer and an aqueous phase comprising an agent capable of generating the sequestration of an organophosphorus compound in the hydrogel material, said agent being potassium fluoride, said aqueous phase being trapped. in the polymer.
- the single figure is a graph illustrating the evolution of the residual DMMP concentration C (expressed in%) as a function of the contact time t (in hours).
- This example illustrates the preparation of a hydrogel material used subsequently for the design of a hydrogel material according to the invention.
- a bar magnet is added to the pill box, which is then sealed with a septum and purged with argon.
- N, N'-dimethylacrylamide (5.44 ml) is added followed by ultrapure water (13.4 ml).
- the resulting mixture is stirred under magnetic stirring under inert gas for 15 minutes until a clear solution is obtained.
- the septum is then removed, and potassium persulfate (35.8 mg) is immediately added to the pill.
- the septum is put back in place and the pill pillar is subjected to a new purge under argon and with stirring.
- the septum is removed again and the whole of the now polymerized mixture is removed with a syringe.
- Deposits of the formed polymer were made in flat-bottomed 25 mL polytetrafluoroethylene (PTFE) cups at a rate of 3.5 mL per cup.
- the cups thus filled are introduced into a hermetic enclosure with a gas flow. A nitrogen sweep is carried out for 2 hours.
- PTFE polytetrafluoroethylene
- the nitrogen flow is interrupted.
- the cups are kept in the chamber under a nitrogen atmosphere overnight.
- the hydrogel materials in the cups are removed and stored on a silicone plate in a safe place. dust for 24 hours (in this case, here a crystallizer returned with care of a slight passage of air).
- Example 2 the hydrogels obtained in Example 1 are swollen.
- a hydrogel material of Example 1 is then immersed in the cup for 24 hours, so that all of the aqueous phase is incorporated into the material.
- Example 2 the procedure is the same as in Example 2, except that the volume of ultrapure water is increased to 10 ml.
- Example 2 the procedure is the same as in Example 2, except that the volume of ultrapure water is increased to 15 ml.
- Example 2 the procedure is the same as in Example 2, with the difference that the aqueous phase used consists of 5 ml of ultrapure water, in which 2.5% by weight of potassium fluoride is dissolved.
- the procedure is the same as in Example 2, except that the aqueous phase used consists of 5 mL. ultrapure water, in which 5% by weight of potassium fluoride is dissolved.
- the procedure is the same as in Example 2, except that the aqueous phase used consists of 10 mL of ultrapure water, in which are dissolved 2.5% by weight of potassium fluoride.
- the procedure is the same as in Example 2, except that the aqueous phase used consists of 10 mL of ultrapure water, in which are dissolved 5% by weight of potassium fluoride.
- Example 11 the procedure is the same as in Example 2, with the difference that the aqueous phase used consists of 10 mL of ultrapure water, in which 10% by weight of potassium fluoride is dissolved.
- the aqueous phase used consists of 10 mL of ultrapure water, in which 10% by weight of potassium fluoride is dissolved.
- the objective is to demonstrate the sequestering properties of the materials of the invention vis-à-vis the organophosphorus compounds.
- the absorption kinetics of the swollen hydrogel are measured when it is deposited directly on a volume comprising an organosphosphorus compound, these conditions being the most representative of a real environment, namely the direct contact with a contaminated surface.
- the organophosphorus compound used is a compound that simulates combat chemical agents (such as Sarin gas), in that it has similar physicochemical properties (in terms, in particular, of boiling point and solubility). presenting less toxicity.
- This organophosphorus compound is dimethyl methylphosphonate (symbolized by the abbreviation DMMP).
- the kinetic monitoring is carried out by indirect determination of the organophosphorus compound as a function of the duration of contacting, this assay being carried out by gas chromatography coupled to a mass spectrometer (GC-MS).
- GC-MS mass spectrometer
- the hydrogel material of the first cup is removed.
- the cup is then rinsed twice with 5 mL of ethanol.
- the two washing phases are combined, then 1 mL is taken and introduced into the GC-MS device feeder.
- a chromatogram is then recorded and the area value of the DMMP signal is measured and compared to the measurement T0.
- Example 6 the hydrogel material, for which the aqueous phase used consists of 5 ml of ultrapure water, in which 5% by weight of potassium fluoride is dissolved.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Polymers & Plastics (AREA)
- General Chemical & Material Sciences (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Wood Science & Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1650722A FR3047242B1 (fr) | 2016-01-29 | 2016-01-29 | Materiau hydrogel utilisable pour la sequestration de composes organophosphores |
| PCT/EP2017/051670 WO2017129688A1 (fr) | 2016-01-29 | 2017-01-26 | Materiau hydrogel utilisable pour la sequestration de composes organophosphores |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3408321A1 true EP3408321A1 (fr) | 2018-12-05 |
Family
ID=55759808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17702072.4A Withdrawn EP3408321A1 (fr) | 2016-01-29 | 2017-01-26 | Materiau hydrogel utilisable pour la sequestration de composes organophosphores |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20190031979A1 (fr) |
| EP (1) | EP3408321A1 (fr) |
| FR (1) | FR3047242B1 (fr) |
| WO (1) | WO2017129688A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3079519B1 (fr) * | 2018-03-27 | 2020-04-24 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Nouvelles solutions a base d'une charge thixotrope et nouveaux materiaux polymeriques obtenus a partir de ces solutions utilisables pour le piegeage d'agents toxiques chimiques |
| FR3079518B1 (fr) * | 2018-03-27 | 2021-01-01 | Commissariat Energie Atomique | Solutions et materiaux polymeriques obtenus a partir de ces solutions utilisables pour le piegeage d'agents toxiques chimiques |
| IT201900002663A1 (it) | 2019-02-25 | 2020-08-25 | St Microelectronics Srl | Sensore di pressione includente un trasduttore microelettromeccanico e relativo metodo di rilevazione di pressione |
| FR3161568A1 (fr) * | 2024-04-30 | 2025-10-31 | Commissariat à l'Energie Atomique et aux Energies Alternatives | Revêtement de décontamination de composés chimiques toxiques |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7710816A (en) * | 1977-10-03 | 1979-04-05 | Union Carbide Corp | Insol. poly:electrolyte hydrogel from acrylate salt and acrylamide - by irradiation, giving prod. with high liquid absorption capacity |
| WO1999022861A1 (fr) * | 1997-11-05 | 1999-05-14 | Molecular Geodesics, Inc. | Materiaux biomimetiques pour la filtration, le traitement chimique et la detoxification |
| CN101394942B (zh) * | 2006-02-28 | 2012-04-04 | 细胞生物工程有限公司 | 聚合物组合物和从基材上除去污染材料的方法 |
| FR2962046B1 (fr) * | 2010-07-02 | 2012-08-17 | Commissariat Energie Atomique | Gel de decontamination biologique et procede de decontamination de surfaces utilisant ce gel. |
| FR2991988B1 (fr) * | 2012-06-15 | 2015-08-07 | Laurent Laroche | Procede de preparation d'objets en hydrogel biocompatible pour leur application dans le domaine medical, et plus particulierement en ophtalmologie |
| EP2765156A4 (fr) * | 2012-07-05 | 2015-07-08 | Dainippon Ink & Chemicals | Hydrogel polymère ne séchant pas |
-
2016
- 2016-01-29 FR FR1650722A patent/FR3047242B1/fr active Active
-
2017
- 2017-01-26 EP EP17702072.4A patent/EP3408321A1/fr not_active Withdrawn
- 2017-01-26 WO PCT/EP2017/051670 patent/WO2017129688A1/fr not_active Ceased
- 2017-01-26 US US16/073,517 patent/US20190031979A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| YOSSI ZAFRANI ET AL: "The reactivity of quaternary ammonium- versus potassium- fluorides supported on metal oxides: paving the way to an instantaneous detoxification of chemical warfare agents", ORGANIC & BIOMOLECULAR CHEMISTRY, vol. 9, no. 24, 1 January 2011 (2011-01-01), pages 8445, XP055623203, ISSN: 1477-0520, DOI: 10.1039/c1ob06136d * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3047242B1 (fr) | 2019-11-15 |
| WO2017129688A1 (fr) | 2017-08-03 |
| FR3047242A1 (fr) | 2017-08-04 |
| US20190031979A1 (en) | 2019-01-31 |
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