EP4153657A2 - Revêtement nano-céramique, hybride, transparent et biocide pour support solide et support solide comportant un tel revêtement et son procédé d'obtention - Google Patents
Revêtement nano-céramique, hybride, transparent et biocide pour support solide et support solide comportant un tel revêtement et son procédé d'obtentionInfo
- Publication number
- EP4153657A2 EP4153657A2 EP21727161.8A EP21727161A EP4153657A2 EP 4153657 A2 EP4153657 A2 EP 4153657A2 EP 21727161 A EP21727161 A EP 21727161A EP 4153657 A2 EP4153657 A2 EP 4153657A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- acrylate
- meth
- network
- polymer
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6275—Polymers of halogen containing compounds having carbon-to-carbon double bonds; halogenated polymers of compounds having carbon-to-carbon double bonds
- C08G18/6279—Polymers of halogen containing compounds having carbon-to-carbon double bonds; halogenated polymers of compounds having carbon-to-carbon double bonds containing fluorine atoms
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/671—Unsaturated compounds having only one group containing active hydrogen
- C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
- C08G77/24—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen halogen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
- C08G77/26—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen nitrogen-containing groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
- C08L83/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
- C09D175/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
Definitions
- the present invention relates to a transparent and biocidal hybrid nano-ceramic coating and a solid support comprising such a coating comprising at least one hybrid transparent biocidal layer, as well as a sol-gel type production process combined with reactions of polymerization at low temperature and by UV irradiation or click reaction without input of external energy for obtaining this biocidal coating and the solid support covered with said biocidal coating, as well as the applications of such a solid support covered with this coating, in particular for the production of solid supports which can be in contact with microorganisms, in particular bacteria, yeasts and / or viruses, pathogenic or non-pathogenic.
- Quaternary ammoniums and in particular those in the form of an organosilane, such as 3- (trihydroxysilyl) propyldimethyloctadecylammonium chloride, are widely used as a bactericidal agent for the development of antibacterial coatings. Indeed, several scientific studies show that quaternary ammoniums prevent the growth of bacteria and certain viruses on solid supports such as metal, plastic and / or ceramic.
- EP 1863865 B1 describes a procedure for preparing a quaternary ammonium-based antibacterial agent containing silica combined with other polymers.
- Patent EP 2285857 B1 describes an antibacterial coating under an interconnected polyurethane-silica network with quaternary ammoniums as an antibacterial agent.
- the present invention aims to solve the drawbacks of the state of the art, in particular to obtain a new biocidal coating, in particular antibacterial, antifungal and / or antiviral, in particular a new biocidal coating against coronaviruses and any type.
- of solid support comprising such a biocidal coating and the process for obtaining such a biocidal coating and of the solid support comprising this biocidal coating and which is of simple design, durable and resistant.
- a particular aim of the invention is to obtain such a support comprising this coating, preferably a transparent biocidal coating and exhibiting mechanical resistance, a long lifespan and / or biocidal efficacy against microorganisms, in particular against bacteria, in particular salmonella and staphylococci, yeasts, molds and / or viruses, including coronaviruses, improved compared to the known coatings of solid supports of the state of the art.
- solid support are understood to mean any solid surface of an element consisting partially or totally of metal substrates, preferably chosen from the group consisting of steel, aluminum, nickel, titanium, copper, zinc and / or their alloys, ceramics, polymeric substrates, glass fibers, textiles or a mixture of these substrates, in particular objects for medical use.
- biocidal coating of a solid support is meant the presence on one or more surface (s) has antibacterial, anti-fungal or antiviral activity of a solid support, including an object for medical use. 'one or more layers forming a nano-gel and a polymer network.
- the present invention relates to the products (transparent and biocidal hybrid nanoceramic coating and solid support comprising such a coating) and the process for obtaining this coating and this solid support according to the appended claims.
- the nano-ceramic, hybrid, transparent and biocidal coating on a solid support is based on a polymer network, preferably a polymer chosen from the group consisting of polyurethane, poly (meth) acrylate, polyepoxycyanate, polycyanate, polythiocyante and / or polycarbonate, polythiocarbonate and an organosiloxane, organotitanate, organozincate or organozirconate network comprising groups (or functionalized by) quaternary ammoniums and nano-structured by inorganic nanoparticles, optionally functionalized, in particular nanoparticles of metal oxides, preferably chosen from the group consisting of particles of S1O2, T1O2, ZnO, and / or ZrC> 2.
- a polymer network preferably a polymer chosen from the group consisting of polyurethane, poly (meth) acrylate, polyepoxycyanate, polycyanate, polythiocyante and / or polycarbonate,
- the process for obtaining the nanoceramic, hybrid, transparent and biocidal coating of the invention on a solid support consists firstly in producing a sol-gel based on silica nanoparticles (or nanoparticles of PO2, ZnO, Zr0 2 ”) functional dispersed in aqueous medium, siloxane derivatives (or equivalent based on titanium, zinc or zirconium) and carrying reactive functions, preferably by the presence of reaction groups of the type alcohol, of amine type, of thiol type, of epoxy type, etc. and of quaternary ammoniums substituted with a siloxane group (or equivalent).
- the sol-gel is prepared at room temperature.
- This first step makes it possible to have a functional polysiloxane (or equivalent) nanogel (component A) in which are incorporated: inorganic nanoparticles, preferably nanoparticles of silica or PO2, ZnO, ZrC> 2 .... These nanoparticles are linked by covalent bonds with the polysiloxane network in which they are integrated to provide mechanical reinforcement to said polysiloxane network .
- the size of the nanoparticles is preferably between approximately 10 nm and approximately 100 nm, preferably between approximately 20 nm and approximately 80 nm, more particularly between approximately 30 nm and approximately 70 nm.
- R1R2R 3 NR4 in which R 1 , R 2 and R s are alkyl or aryl chains (preferably chains of 2 carbon atoms to 20 carbon atoms ) and R4 is the siloxane (or an equivalent) of the reaction groups, preferably of reaction groups selected from the group consisting of amines, alcohols, acrylates (and / or methacrylates), epoxies, ketones, carbonates or activated carbonates of phosphines and / or thiols which can advantageously react at room temperature and / or under UV or IR irradiation and optionally an adhesion promoter of the siloxane or functional dopamine type and / or (meth) acrylate carrying functions of the type tetrahydrofuran, carboxylic acid or phosphoric acid.
- reaction groups such as groups of tertiary amine type, of phosphine type ... which can secondly act as a catalyst for reactions between the reaction groups of component A with a second polymer network of poly (meth) acrylate, polyurethane, polyisocyanate, polythioisocyanate, polythiocarbonate or polycarbonate type forming the component B.
- This second poly (meth) acrylate, polyurethane polyisocyanate, polythioisocyanate, polythiocarbonate or polycarbonate type network will therefore be chemically connected to said first polysiloxane network (called component A) by means of very rapid reactions of polymerization at low temperature by UV irradiation without adding external energy or reaction called click chemistry type between the reaction groups (from ty eg alcohol, of amine type, of thiol type, of epoxy type, etc.) present in the nanogel of component A and the groups (meth) acrylate, epoxy- (meth) acrylate groups, isocyanate groups or carbonate groups present in component B.
- U.V. or so-called chemistry-click reaction between component A and component B are very rapid reactions that do not take place without external energy input, can be done in a few seconds.
- the presence of the catalyst of component A makes it possible to have crosslinking reactions capable of obtaining hardening of the coating, rapidly between component A and component B to ambient temperature.
- crosslinking reactions can also be obtained under U V or IR irradiation to accelerate the hardening of the coating.
- component B chemically bonded to a (meth) acrylate may contain a photoinitiator, in particular sensitive to type A and / or type B UV radiation.
- siloxane derivatives (or equivalents) carrying reaction groups (of alcohol type, of amine type, of thiol type, of epoxy type, etc.) present in component A can advantageously facilitate the adhesion of the coating formed on solid supports.
- the two components A and B are, for example, mixed and applied using a spray from a gun with two reservoirs, one component per reservoir.
- nano-ceramic, hybrid, transparent and biocidal coating of the invention with very high mechanical strength, good adhesion on different substrates (organic and inorganic) and transparent on a solid support, the process which makes it possible to have a coating based on functional nano-ceramics chemically linked to a polymer network.
- the latter is advantageously hardened without resorting to a baking step at high temperatures.
- a first object of the present invention relates to a coating for a solid support, comprising: a first polysiloxane or polytitanoxane network comprising inorganic nanoparticles connected to a second polymeric network.
- this coating further comprises a siloxane derivative, linked via at least one Si-0 bond (eg Si-O-Si) to the first network, and carrying one or more biocidal quaternary ammonium.
- a siloxane derivative linked via at least one Si-0 bond (eg Si-O-Si) to the first network, and carrying one or more biocidal quaternary ammonium.
- the inorganic nanoparticles are metal oxides, preferably chosen from the group consisting of S1O2, PO2, ZnO or ZrC> 2.
- the nanoparticles are in S1O2.
- the nanoparticles have a size between
- these nanoparticles are preferably connected to the second polymer network (comprising an isocyanate derivative, such as a polyurethane or a polyurethane- (meth) acrylate) via an epoxy function, which provides the coating with better coating. transparency.
- an isocyanate derivative such as a polyurethane or a polyurethane- (meth) acrylate
- the first polysiloxane or polytitanoxane network is (besides the nanoparticles) connected to the second polymeric network (comprising an isocyanate derivative, such as a polyurethane or a polyurethane- (meth) acrylate) via epoxy functions.
- an isocyanate derivative such as a polyurethane or a polyurethane- (meth) acrylate
- the first network and the second network are linked by covalent links, preferably comprising covalent links between the second network and the nanoparticles and covalent links between the second network and the polysiloxane.
- the polymer of the second polymeric network is chosen from the group consisting of polyurethane, poly (meth) acrylate, polyepoxy (meth) acrylate, polyisocyanate, polyisocyanurate, polythioisocyanate, polycarbonate or polythiocarbonate or a mixture of these polymers, preferably a polyurethane- (meth) acrylate or a polyisocyanurate.
- this polymer comprises or in addition to one or more teterhydrofuran (THF) residues, or one or more (meth) acrylate derivatized by an acid function, such as carboxylic acid or phosphoric acid or a derivative thereof.
- THF teterhydrofuran
- an acid function such as carboxylic acid or phosphoric acid or a derivative thereof.
- Polyurethane especially when isocyanate functions are in excess, allows, after hydrolysis of these excess functions, to create (additional) covalent bonds with the epoxy functions carried by the various siloxane compounds and even the metal nanoparticles, when they contain such functions.
- (meth) acrylate residues allows better adhesion to the substrate, in particular to a metal substrate, when the (meth) acrylate residues are derivatized by an acid function (carboxylic acid, phosphoric acid and its derivatives).
- an acid function carboxylic acid, phosphoric acid and its derivatives
- Tetrahydrofuran is especially useful when the substrate is a plastic (PVC, PU, polystyrene-based copolymer, acrylonitrile butadiene styrene): the incorporation of this group in the coating ensures better adhesion to the plastic of the latter.
- a plastic PVC, PU, polystyrene-based copolymer, acrylonitrile butadiene styrene
- the polymer comprises (in addition) functions capable of being fixed durably on an inorganic substrate, preferably glass or metal, or an organic substrate, preferably a plastic, after application to this substrate and, preferably, curing by heat treatment or by UV.
- this coating is nano-ceramic, hybrid, and transparent.
- this coating is antibacterial and antiviral, including against coronaviruses, such as the SARS-Cov-2 responsible for the COVID-19 infection.
- a related aspect of the present invention is a solid support comprising this coating (biocide), selected from the group consisting of metallic supports, glass fibers and carbon fibers, polymeric supports, ceramics, textiles. and / or a mixture of them, preferably glass fibers and metal supports.
- This solid support can be a medical object, preferably chosen from the group consisting of protective clothing, diagnostic tools or surgical tools.
- Another related aspect of the present invention is a process for obtaining this coating in which a mixture of inorganic nanoparticles dispersed in an aqueous medium is prepared, these nanoparticles having several functions capable of forming a covalent bond with a siloxane derivative and , preferably, also having one (or more) epoxy function; a first organosilane having at least one function hydrolyzable to an Si-OH group and comprising one (more) group (s) capable of reacting with an organic polymer, preferably one (more) epoxy or (meth) acrylate group (s); preferably a siloxane derivative having at least one function hydrolyzable to an Si — OH group and carrying one or more quaternary ammonium; an organic polymer chosen from the group consisting of polyurethane, poly (meth) acrylate, polyepoxy (meth) acrylate, polyisocyanate, polythiocyanate, polycarbonate or polythiocarbonate or a mixture of these polymers preferably being
- this method further comprises the step of applying this coating to one or more surfaces of the solid support, in particular an object for medical use, then subjecting the coated support to curing, preferably thermal curing. or by UV irradiation.
- this step of applying the coating can be done via a 'gun' system with two (or more) compartments, the first compartment comprising the nanoparticles and the first organosilane (and optionally the silane comprising the quaternary amine biocide) in the first compartment, and the polymers or their precursors or the second organosilane in the second compartment.
- these monomers comprise a polyol (in the broad sense: an organic molecule comprising several C-OH residues) having a hydroxyl value of between 20 and 100 mg KOH / g of polymer, preferably 30 and 60 mg KOH / g of polymer, preferably between 40 and 55 mg KOH / g of polymer, preferably between 45 and 50 mg KOH / g of polymer, and a polyisocyanate, these two molecules forming the polymer.
- a polyol in the broad sense: an organic molecule comprising several C-OH residues
- the polyisocyanate is hydrophilic and aliphatic.
- the polyisocyanate has an isocyanate (NCO) content of between 10 and 30%, preferably between 15 and 25%, for example between 16 and 20% (by weight).
- this polyol comprises one or more halogen residues, preferably fluorine; the inventors have noticed that these halogenated polyols (fluorinated) allowed better reaction yields, therefore a coating having better resistance or transparency properties.
- the second organic compound can be an organosilane, preferably an organosilane isocyanurate comprising several trimethoxysilyl groups and / or an organosilane comprising planar organic groups.
- this method further comprises the step of adding a
- (meth) acrylate being polyurethane (meth) acrylate (a polyurethane comprising some (meth) acrylate derivatives) and / or a poly (meth) acrylate comprising a tetrahydro furan (THF) derivative in the mixture, before application of the mixture to a substrate (eg plastic) and eg UV curing; alternatively, a poly (meth) acrylate comprising an acid derivative (carboxylic acid, phosphoric acid or a derivative thereof) is added to the mixture before application to a metal substrate and, for example, UV curing.
- a poly (meth) acrylate comprising an acid derivative (carboxylic acid, phosphoric acid or a derivative thereof) is added to the mixture before application to a metal substrate and, for example, UV curing.
- this method further comprises the step of applying an organosilane having at least one hydrolyzable function to an Si-OH group and a quaternary amine, this group being covalently attached, via the Si-OH function, to nanoparticles and / or to the first organosilane.
- an organosilane having at least one hydrolyzable function to an Si-OH group and a quaternary amine, this group being covalently attached, via the Si-OH function, to nanoparticles and / or to the first organosilane.
- Another related aspect of the present invention relates to a coating obtainable by the above process.
- Another related aspect of the present invention relates to the use of the coating described above to increase the mechanical strength of a substrate, preferably plastic, glass, paint or metal.
- Another related aspect of the present invention relates to the use of an isocyanurate derivatized by one or more trimethoxysilyl to increase the mechanical strength of a substrate, being a plastic, glass, paint or metal.
- Another related aspect of the present invention relates to the use of a fluorinated polyol to increase the mechanical strength and / or the chemical resistance and / or the anti-adhesion of a substrate, being a plastic, of the glass, paint or metal.
- VPS 7163 Tris [3- (trimethoxysilyl) propyl] isocyanurate; Evonik, product information, July 2017.
- BI-OME AM72 contains 70% of dimethyloctadecyl (3- (trimethoxysilyl) propyl) ammonium chloride) + 14 g H2O + 50 g of ethanol is stirred.
- 0.05 g of acetic acid is added to the mixture and stirring is maintained for 2 hours at room temperature to form the functional nano-gel.
- Dynasylan® SIVO 110 is composed of silanes having organofunctional groups and functionalized S1O2 nanoparticles. This formulation further comprises organic functions based on Si-epoxy bonds; Dynasylan® SIVO 110 contains functional silanol groups and organic reactive functions based on epoxy groups bonded to Si.
- Dynasylan® GLYMO is a bifunctional organosilane having a reactive epoxy organic residue and hydrolyzable inorganic methoxysylil groups.
- the dual reaction capacity allows binding to inorganic (eg glass, metal) and organic materials.
- the methoxy groups of Dynasylan® GLYMO are hydrolyzed so as to form silanol groups which can create bonds with several inorganic substrates.
- It is an organosilane also having one or more reactive epoxy group (s). This molecule, due to its dual reactivity, can bind both to inorganic materials (glass, silica, metal) and to organic polymers.
- VPS 7163 is an isocyanurate silane having a high density of trimethoxysilyl groups, it is a powerful crosslinking agent.
- the molecule contains a 6-membered heterocyclic group with a planar structure.
- the final mixture is applied to glass and stainless steel substrates by spraying.
- the coating is cured by baking at 150 ° C for 1 hour (or 2 minutes at 200 ° C).
- the final coating has very good abrasion resistance (no scratch marks after the abrasion test).
- the final mixture is applied to glass substrates and
- Step 1 formation of the functional nano-gel by a sol-gel process
- Step 2 addition of the 2K polyurethane
- Lumiflon FE-4400 an emulsion fluoropolymer having numerous —OH functionalities (hydroxyl value: 49 mg KOH / g of polymer). The molecule is anionic. The particles have a diameter between 0.1 and 0.2 ⁇ m. The solid content is 50%. AGC Chemicals, April 09. [0061] Bayhydur®3100 is an aliphatic hydrophilic polyisocyanate based on hexamethylene di-isocyanate (HDI). The NCO content is 17.4 +/- 0.5 with a monomeric HDI content of less than 0.15%. Covestro, technical sheet 01/06/2017. The final mixture is applied to stainless steel substrates by spraying. The coating is cured by baking at 150 ° C for 1 hour (or 2 minutes at 200 ° C).
- Example 3 (Sol-gel + Polyurethane-Acrylate with baking under UV-application on PVC)
- Step 1 formation of the functional nano-gel by a sol-gel process
- the alkoxyl groups of Dynasylan® MEMO hydrolyze in the presence of water, a reaction which can be catalyzed by acetic acid, which produces methanol and reactive silanol groups, which are capable of binding to various inorganic substrates (eg glass, fiberglass, metals including aluminum hydroxides, other silicates in the broad sense: mica, sand, quartz, silica).
- Methacrylate groups are reactive with polymers, such as (unsaturated) polyesters, acrylates and vinyl esters.
- Step 2 addition of the polyurethane-acrylate
- the final coating has very good adhesion to PVC.
- Step 1
- the final mixture is applied to PVC substrates by spraying.
- the coating is cured under UV irradiation with an LED lamp (wavelength at 385 nm) for 1 minute.
- the coating has low adhesion to PVC (the coating is easily detached from the substrate).
- Example 4 (Sol-gel + Polyurethane-Acrylate with baking under UV-application on stainless steel)
- Step 1 formation of the functional nano-gel by a sol-gel precede
- Step 2 addition of the polyurethane-acrylate
- EBECRYL® 4683 polyurethane-acrylate
- EBECRYL® 168 Metalurethane-acrylate
- Omnirad 4265 free radical photoinitiator
- EBECRYL® 4683 is an aliphatic urethane acrylate diluted 35% with isobornyl acetate; Allnex, technical sheet 04/16/2021.
- the final mixture is applied to PVC substrates by spraying.
- the coating is cured under UV irradiation with an LED lamp (wavelength at 385 nm) for 1 minute.
- the final coating exhibits very good adhesion to I ⁇ NOC.
- the antibacterial activity of the coating deposited on PVC is determined according to the ISO 22196 standard.
- Each surface was inoculated with 800 ⁇ l of the starting inoculum. These surfaces are placed in a humid atmosphere in an oven at 37 ° C. to be incubated for 1 hour or 24 hours.
- the inoculum of these surfaces is recovered in 20 ml of LB500.
- the bacteria present in this solution are enumerated by dilutions of 10 ° to 10 5 by spreading 3 times 10 ml per petri dish.
- the PVC surfaces treated with the antibacterial coating therefore exhibit an antibacterial activity> 99.99% with the two strains of bacteria (Staphylococcus aureus ATCC 6538 and Escherichia coli ATCC 8739) after just 1 hour of contact.
- the antibacterial coating provides the same antibacterial activity as the AgOX positive control sample.
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- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
Abstract
Description
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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BE202005361 | 2020-05-22 | ||
PCT/EP2021/063695 WO2021234162A2 (fr) | 2020-05-22 | 2021-05-21 | Revêtement nano-céramique, hybride, transparent et biocide pour support solide et support solide comportant un tel revêtement et son procédé d'obtention |
Publications (1)
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EP21727161.8A Withdrawn EP4153657A2 (fr) | 2020-05-22 | 2021-05-21 | Revêtement nano-céramique, hybride, transparent et biocide pour support solide et support solide comportant un tel revêtement et son procédé d'obtention |
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BE1029958B1 (fr) * | 2021-11-24 | 2023-06-19 | Sichem | Revêtement biocide amélioré |
BE1030726B1 (nl) | 2022-07-25 | 2024-02-19 | Grandeco Wallfashion Group Belgium Nv | Flexibele wandbekleding met virusdodende coating en werkwijze voor het vervaardigen daarvan |
CN116446192B (zh) * | 2023-05-06 | 2024-04-02 | 扬州诺得利纺织科技有限公司 | 一种发热保暖面料及其制备方法 |
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JP3444287B2 (ja) * | 2001-01-25 | 2003-09-08 | 荒川化学工業株式会社 | アルコキシ基含有シラン変性ポリウレタン樹脂、当該樹脂組成物およびポリウレタン樹脂−シリカハイブリッド体 |
JP2008534714A (ja) | 2005-03-22 | 2008-08-28 | バイオセーフ インク. | 優れた持続性の抗菌特性を有する、無溶媒のシリコン含有第4級アンモニウムを含むポリマー抗菌剤の作製法 |
JP2011522077A (ja) | 2008-05-29 | 2011-07-28 | ビーエーエスエフ ソシエタス・ヨーロピア | ポリウレタン−シリカ相互侵入網目構造と共有結合した抗菌剤を含有する抗菌組成物 |
WO2013110566A1 (fr) | 2012-01-27 | 2013-08-01 | Basf Se | Matière de revêtement antimicrobienne durcissable par rayonnement |
CN107312422A (zh) * | 2015-11-24 | 2017-11-03 | 三棵树涂料股份有限公司 | 含改性聚氨酯乳液水性木器涂料及其制备方法 |
CN106084234A (zh) * | 2016-06-06 | 2016-11-09 | 湖北新海鸿化工有限公司 | 一种有机硅季胺盐抗菌剂的制备方法及硅酮胶 |
CN109517121B (zh) * | 2018-11-01 | 2021-03-23 | 陕西科技大学 | 一种有机硅季铵盐/(Ag/ZnO)纳米抗菌剂及其制备方法和应用 |
CN110218496A (zh) * | 2019-07-01 | 2019-09-10 | 中安瑞材(北京)科技有限公司 | 一种防霉漆及其制备方法 |
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2021
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- 2021-05-21 WO PCT/EP2021/063695 patent/WO2021234162A2/fr unknown
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WO2021234162A2 (fr) | 2021-11-25 |
WO2021234162A3 (fr) | 2022-01-13 |
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