EP3019539A1 - Copolymer for a hydrophobic coating having an improved durability - Google Patents

Copolymer for a hydrophobic coating having an improved durability

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Publication number
EP3019539A1
EP3019539A1 EP14747076.9A EP14747076A EP3019539A1 EP 3019539 A1 EP3019539 A1 EP 3019539A1 EP 14747076 A EP14747076 A EP 14747076A EP 3019539 A1 EP3019539 A1 EP 3019539A1
Authority
EP
European Patent Office
Prior art keywords
group
glass substrate
copolymer
hydrophobic
substrate according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14747076.9A
Other languages
German (de)
French (fr)
Inventor
François GUILLEMOT
Cédric LOUBAT
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Glass France SAS
SPECIFIC POLYMERS
Compagnie de Saint Gobain SA
Original Assignee
Saint Gobain Glass France SAS
SPECIFIC POLYMERS
Compagnie de Saint Gobain SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint Gobain Glass France SAS, SPECIFIC POLYMERS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Publication of EP3019539A1 publication Critical patent/EP3019539A1/en
Withdrawn legal-status Critical Current

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
    • 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
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
    • C03C17/32—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/3405—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of organic materials
    • 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
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09D133/10—Homopolymers or copolymers of methacrylic acid esters
    • C09D133/12—Homopolymers or copolymers of methyl methacrylate
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
    • C03C17/30—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with silicon-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00—Coatings on glass
    • C03C2217/70—Properties of coatings
    • C03C2217/76—Hydrophobic and oleophobic coatings
    • 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
    • C08F220/22—Esters containing halogen
    • C08F220/24—Esters containing halogen containing perhaloalkyl radicals
    • 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
    • C08F220/38—Esters containing sulfur
    • C08F220/382—Esters containing sulfur and containing oxygen, e.g. 2-sulfoethyl (meth)acrylate
    • 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
    • C08K9/00—Use of pretreated ingredients
    • C08K9/04—Ingredients treated with organic substances
    • C08K9/06—Ingredients treated with organic substances with silicon-containing compounds

Definitions

  • the present invention relates to the production of a hydrophobic coating on glass using a polymer layer whose composition is adjusted to obtain good durability: hydrolytic, UV, mechanical.
  • This coating can be applied to automotive glazing on the exposed side to improve visibility in rainy weather and thus improve safety.
  • the hydrophobic layer is a molecular monolayer of a fluorinated silane, mainly (1 H, 1 H, 2H, 2H) perfluorodecylsilane.
  • a first avenue of improvement was to develop a coating of the same type that can be applied to a windshield.
  • the main problem in this case was to improve the mechanical and hydrolytic durability so as to be able to withstand the additional stresses on a windshield compared to the side windows.
  • Hydrophobic treatment based on fluorinated silane molecular layer has two major drawbacks that cause sustainability problems:
  • the treatment is based on a single layer of molecule (monomolecular layer); it is easy to understand that during aging, if a molecule comes off the surface, the released site is no longer functional; thus, any minor degradation of the surface (scratching, hydrolysis, etc.) induces a total loss of functionality at the level of the defect.
  • the invention proposes to address the problem of the hydrophobic coating differently by developing a polymer material providing this hydrophobic functionality. Its molecular architecture is adjusted to obtain optimal properties in terms of hydrophobic functionality, ease of implementation, hydrolytic durability, stability under UV irradiation and finally mechanical stability.
  • the subject of the invention is a copolymer of formula (I)
  • the group R 1 is hydrophobic
  • the group R 2 is crosslinkable
  • n is an integer.
  • the backbone of the polymer according to the invention is composed of four types of units resulting from four types of monomers:
  • PMMA polymethylmethacrylate
  • the functionality is present on the surface of the coating but also in its volume.
  • the coating retains its hydrophobic functionality.
  • the invention also relates to a glass substrate comprising a copolymer coating described above, with the interposition of a functional silane layer capable of reacting with the crosslinkable group R 2 .
  • the silane function is in a known manner able to bind to the glass.
  • the mechanical properties of the copolymer coating can be improved by incorporating mineral fillers.
  • mineral fillers are most often silica nanoparticles. Their size is less than 50 nm in order not to make the coating diffusing optically.
  • the surface of these mineral fillers can be functionalized in order to be able to react with the crosslinkable R 2 function of the copolymer.
  • the invention also relates to the application of the glass substrate described above as
  • a glass substrate is previously activated by Cerox polishing.
  • an aqueous solution sold by the company Evonik was used, the concentration of which was adjusted to 1% by weight.
  • the solution is applied to the glass by ragging, the coating is dried for 15min at 110.degree. C., and the excess is removed by rubbing the glass with a cloth soaked in isopropanol.
  • the co-polymer is used
  • HEMA hydroxyethyl methacrylate Mesylate: SO 2 CH 3
  • This copolymer is solubilized at 3% by weight in methyl ethyl ketone, and deposited by spin-coating (2000 rpm) on the functionalized substrate.
  • the coating is crosslinked in an oven at 130 ° C for 1 hour.
  • the water contact angle measured on the functionalized substrate is measured at 11 °.
  • the measured contact angle is 103 °.
  • the measured contact angle is 105 °.
  • a dispersion of silica nanoparticles in the methyl ethyl ketone could have been added to the formulation to enhance the mechanical properties.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Paints Or Removers (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

The invention relates to a copolymer of formula (I) wherein group R1 is hydrophobic, group R2 is cross-linkable, x, z and t>0 and y≥0 and x + y + z + t= 1, n is a whole number; to a glass substrate including a coating made of this polymer, comprising an inserted silane layer having a function that is capable of reacting with the cross-linkable group R2; and to the use of said glass substrate as a hydrophobic glass panel for a transport vehicle, for a shower compartment wall or for an interior glass panel that is easy to clean.

Description

COPOLYMERE POUR REVETEMENT HYDROPHOBE  COPOLYMER FOR HYDROPHOBIC COATING
A DURABILITE AMELIOREE  IMPROVED DURABILITY
La présente invention concerne la réalisation d'un revêtement hydrophobe sur du verre à l'aide d'une couche polymère dont la composition est ajustée pour obtenir une bonne durabilité : hydrolytique, UV, mécanique. Ce revêtement peut être appliqué sur un vitrage automobile sur la face exposée à l'extérieur pour améliorer la visibilité par temps de pluie, et ainsi améliorer la sécurité. The present invention relates to the production of a hydrophobic coating on glass using a polymer layer whose composition is adjusted to obtain good durability: hydrolytic, UV, mechanical. This coating can be applied to automotive glazing on the exposed side to improve visibility in rainy weather and thus improve safety.
La société Saint-Gobain Sekurit produit actuellement des vitres latérales pour automobile revêtues d'un traitement hydrophobe sous la marque enregistrée Aquacontrol®. Ce revêtement est appliqué par voie liquide sous la forme d'un système en deux couches : sous-couche à base de silice pour améliorer la durabilité, et couche hydrophobe. La couche hydrophobe est une monocouche moléculaire d'un silane fluoré, principalement le (1 H,1 H,2H,2H)perfluorodecylsilane.  Saint-Gobain Sekurit currently produces automotive side windows coated with a hydrophobic coating under the registered trademark Aquacontrol®. This coating is applied in a liquid form in the form of a two-layer system: silica-based undercoat to improve durability, and hydrophobic layer. The hydrophobic layer is a molecular monolayer of a fluorinated silane, mainly (1 H, 1 H, 2H, 2H) perfluorodecylsilane.
Une première voie d'amélioration a eu pour objectif de développer un revêtement du même type pouvant être appliqué sur un pare-brise. La problématique principale dans ce cas était d'améliorer la durabilité mécanique et hydrolytique de manière à pouvoir supporter les contraintes supplémentaires sur un pare-brise par rapport aux vitres latérales.  A first avenue of improvement was to develop a coating of the same type that can be applied to a windshield. The main problem in this case was to improve the mechanical and hydrolytic durability so as to be able to withstand the additional stresses on a windshield compared to the side windows.
Un traitement hydrophobe à base de couche moléculaire de silane fluoré présente deux inconvénients majeurs à l'origine des problèmes de durabilité :  Hydrophobic treatment based on fluorinated silane molecular layer has two major drawbacks that cause sustainability problems:
- les molécules sont liées à la surface du verre via une liaison Si-O- Si. Ce type de liaison présente l'inconvénient d'être hydrolysable en milieu salin ou basique. Ceci arrive fréquemment sur un pare- brise sur lequel des gouttes d'eau peuvent stagner ;  the molecules are bonded to the glass surface via an Si-O-Si bond. This type of bond has the disadvantage of being hydrolysable in a saline or basic medium. This happens frequently on a windshield on which drops of water can stagnate;
- le traitement repose sur une seule couche de molécule (couche monomoléculaire) ; on comprend aisément qu'au cours du vieillissement, si une molécule vient à se décrocher de la surface, le site libéré n'est plus fonctionnel ; ainsi, toute dégradation mineure de la surface (rayure, hydrolyse, etc.) induit une perte de fonctionnalité totale au niveau du défaut. the treatment is based on a single layer of molecule (monomolecular layer); it is easy to understand that during aging, if a molecule comes off the surface, the released site is no longer functional; thus, any minor degradation of the surface (scratching, hydrolysis, etc.) induces a total loss of functionality at the level of the defect.
L'invention se propose d'adresser différemment la problématique du revêtement hydrophobe en développant un matériau polymère apportant cette fonctionnalité hydrophobe. Son architecture moléculaire est ajustée afin d'obtenir des propriétés optimales en terme de fonctionnalité hydrophobe, de facilité de mise en œuvre, de durabilité hydrolytique, de stabilité sous irradiation UV et enfin de stabilité mécanique.  The invention proposes to address the problem of the hydrophobic coating differently by developing a polymer material providing this hydrophobic functionality. Its molecular architecture is adjusted to obtain optimal properties in terms of hydrophobic functionality, ease of implementation, hydrolytic durability, stability under UV irradiation and finally mechanical stability.
A cet effet, l'invention a pour objet un copolymère de formule (I)  For this purpose, the subject of the invention is a copolymer of formula (I)
dans laquelle  in which
le groupe R1 est hydrophobe, the group R 1 is hydrophobic,
le groupe R2 est réticulable, the group R 2 is crosslinkable,
x, z et t > 0 et y > 0 et x + y + z + t = l  x, z and t> 0 and y> 0 and x + y + z + t = l
n est un nombre entier.  n is an integer.
Le squelette du polymère selon l'invention est composé de quatre types d'unités issues de quatre types de monomères : The backbone of the polymer according to the invention is composed of four types of units resulting from four types of monomers:
- une base polyméthacrylate de méthyle (PMMA) dont la fraction molaire est x ;  a polymethylmethacrylate (PMMA) base whose mole fraction is x;
- des éléments méthacrylate avec un groupement méthyle fluoré, apportant une partie de la fonctionnalité hydrophobe (fraction molaire y) ; - des maillons méthacrylate portant la fonctionnalité hydrophobe dont la fraction molaire est z ; cette fonction peut être de la forme -(CF2)mCF3 (m=5,7,9,1 1 ) ou de la forme -OC(=O)CF(CF3)-(OCF2CF(CF3))p-F (p nombre entier compris entre 2 et 10) ; methacrylate elements with a fluorinated methyl group, providing a part of the hydrophobic functionality (mole fraction y); methacrylate links carrying the hydrophobic functionality whose mole fraction is z; this function can be of the form - (CF 2 ) m CF 3 (m = 5,7,9,1 1) or of the form -OC (= O) CF (CF 3 ) - (OCF 2 CF (CF 3 )) pF (p integer between 2 and 10);
- des maillons méthacrylate portant un groupement réticulable, dont la fraction molaire est t ; ce groupement peut porter une fonction époxyde, mésyle, tosyle, isocyanate.  - Methacrylate links carrying a crosslinkable group, the mole fraction is t; this group may carry an epoxide, mesyl, tosyl or isocyanate function.
Selon l'invention, la fonctionnalité est présente en surface du revêtement mais aussi dans son volume. Ainsi, l'on peut s'attendre à ce qu'en cas de dégradation modérée, le revêtement conserve sa fonctionnalité hydrophobe.  According to the invention, the functionality is present on the surface of the coating but also in its volume. Thus, it can be expected that in case of moderate degradation, the coating retains its hydrophobic functionality.
L'invention a également pour objet un substrat verrier comprenant un revêtement de copolymère décrit précédemment, avec interposition d'une couche de silane à fonction apte à réagir avec le groupe R2 réticulable. La fonction silane est de manière connue apte à se lier au verre. The invention also relates to a glass substrate comprising a copolymer coating described above, with the interposition of a functional silane layer capable of reacting with the crosslinkable group R 2 . The silane function is in a known manner able to bind to the glass.
Enfin, les propriétés mécaniques du revêtement de copolymère peuvent être améliorées en y incorporant des charges minérales. Ces charges minérales sont le plus souvent des nanoparticules de silice. Leur taille est inférieure à 50 nm afin de ne pas rendre le revêtement diffusant optiquement. D'autre part, la surface de ces charges minérales peut être fonctionnalisée afin de pouvoir réagir avec la fonction R2 réticulable du copolymère. Finally, the mechanical properties of the copolymer coating can be improved by incorporating mineral fillers. These mineral fillers are most often silica nanoparticles. Their size is less than 50 nm in order not to make the coating diffusing optically. On the other hand, the surface of these mineral fillers can be functionalized in order to be able to react with the crosslinkable R 2 function of the copolymer.
L'invention a aussi pour objet l'application du substrat verrier décrit précédemment comme  The invention also relates to the application of the glass substrate described above as
- vitrage hydrophobe de véhicule de transport (terrestre, aérien, aquatique, en particulier automobile) ;  - hydrophobic glazing of transport vehicles (land, air, water, especially automobile);
- paroi de cabine de douche ; et  - shower enclosure wall; and
- vitrage intérieur facile à nettoyer.  - interior glazing easy to clean.
L'invention est maintenant illustrée par l'exemple de réalisation suivant. Exemple The invention is now illustrated by the following embodiment. Example
a. Préparation du substrat  at. Substrate preparation
Un substrat de verre est préalablement activé par un polissage au Cerox.  A glass substrate is previously activated by Cerox polishing.
Puis il est fonctionnalisé avec de l'aminopropyl triéthoxysilane. Pour cela, on utilise une solution aqueuse commercialisée par la société Evonik, dont on a ajusté la concentration à 1 % en poids. La solution est appliquée sur le verre par chiffonnage, le revêtement est séché 15min à 1 10°C, puis l'excès éliminé en frottant le verre avec un chiffon imbibé d'isopropanol.  Then it is functionalized with aminopropyl triethoxysilane. For this purpose, an aqueous solution sold by the company Evonik was used, the concentration of which was adjusted to 1% by weight. The solution is applied to the glass by ragging, the coating is dried for 15min at 110.degree. C., and the excess is removed by rubbing the glass with a cloth soaked in isopropanol.
b. Couche fonctionnelle  b. Functional layer
On utilise le co olymère  The co-polymer is used
Composition (%mol) MMA : 60%  Composition (% mol) MMA: 60%
HEMA Mésylate : 20% Zonyl : 20% HEMA Mesylate: 20% Zonyl: 20%
Composition (% en poids) MMA : 29% Composition (% by weight) MMA: 29%
HEMA Mésylate ; 20% HEMA Mesylate; 20%
Zonyl : 51 %Zonyl: 51%
% en poids Fluor 31 % Poids moléculaire Mn 16500 g/mol Poids moléculaire Mw 60100 g/mol Indice de Polydispersité 3,7 % by weight Fluorine 31% Molecular weight Mn 16500 g / mol Molecular weight Mw 60100 g / mol Polydispersity index 3,7
MMA : méthacrylate de méthyle MMA: methyl methacrylate
HEMA : méthacrylate d'hydroxyéthyle Mésylate : SO2CH3 HEMA: hydroxyethyl methacrylate Mesylate: SO 2 CH 3
Zonyl : motif fluoré du copolymère  Zonyl: fluorinated pattern of the copolymer
Ce copolymère est solubilisé à 3 % en poids dans la méthyle éthyle cétone, et déposé par spin-coating (2000 tours par minute) sur le substrat fonctionnalisé. Le revêtement est réticulé en étuve à 130°C pendant 1 heure.  This copolymer is solubilized at 3% by weight in methyl ethyl ketone, and deposited by spin-coating (2000 rpm) on the functionalized substrate. The coating is crosslinked in an oven at 130 ° C for 1 hour.
c. Propriétés  vs. properties
L'angle de contact à l'eau mesuré sur le substrat fonctionnalisé est mesuré à 1 14°.  The water contact angle measured on the functionalized substrate is measured at 11 °.
Après un test de Brouillard Salin Neutre pendant 72 heures, l'angle de contact mesuré est de 103°.  After a neutral salt spray test for 72 hours, the measured contact angle is 103 °.
Après un test d'exposition aux UV (WOM) pendant 400 heures, l'angle de contact mesuré est de 105°.  After a UV exposure test (WOM) for 400 hours, the measured contact angle is 105 °.
On aurait pu ajouter à la formulation une dispersion de nanoparticules de silice dans la méthyle éthyle cétone afin de renforcer les propriétés mécaniques.  A dispersion of silica nanoparticles in the methyl ethyl ketone could have been added to the formulation to enhance the mechanical properties.

Claims

REVENDICATIONS
1 . Copolymère de formule (I) 1. Copolymer of formula (I)
dans laquelle le groupe R1 est hydrophobe, le groupe R2 est réticulable, x, z et t > 0 et y≥0 et x + y + z + t = 1 , n est un nombre entier. in which the group R 1 is hydrophobic, the group R 2 is crosslinkable, x, z and t> 0 and y≥0 and x + y + z + t = 1, n is an integer.
Copolymère selon la revendication 1 , caractérisé en ce que le groupe R1 est un groupe -(CF2)mCF3 avec m = 5, 7, 9 ou 1 1 , ou un groupe Copolymer according to Claim 1, characterized in that the group R 1 is a group - (CF 2 ) m CF 3 with m = 5, 7, 9 or 1 1, or a group
-OC(=O)CF(CF3)(OCF2CF(CF3))pF, p étant un nombre entier compris entre 2 et 10. -OC (= O) CF (CF 3 ) (OCF 2 CF (CF 3 )) p F, p being an integer between 2 and 10.
3. Copolymère selon l'une des revendications précédentes, caractérisé en ce que le groupe R2 porte une fonction époxyde, mésyle, tosyle ou isocyanate. 3. Copolymer according to one of the preceding claims, characterized in that the R 2 group carries an epoxide, mesyl, tosyl or isocyanate function.
Substrat verrier comprenant un revêtement de copolymère selon la revendication 1 , avec interposition d'une couche de silane à fonction apte à réagir avec le groupe R2 réticulable. Glass substrate comprising a copolymer coating according to claim 1, with the interposition of a functional silane layer capable of reacting with the crosslinkable group R 2 .
5. Substrat verrier selon la revendication 4, caractérisé en ce que le revêtement de copolymère comprend des charges minérales.  5. Glass substrate according to claim 4, characterized in that the copolymer coating comprises mineral fillers.
6. Substrat verrier selon la revendication 5, caractérisé en ce que lesdites charges minérales sont des nanoparticules de silice. 6. Glass substrate according to claim 5, characterized in that said mineral fillers are silica nanoparticles.
7. Substrat verrier selon l'une des revendications 5 ou 6, caractérisé en ce que la surface desdites charges minérales présente une fonction apte à réagir avec le groupe R2 réticulable. 7. Glass substrate according to one of claims 5 or 6, characterized in that the surface of said mineral fillers has a function capable of reacting with the group R 2 crosslinkable.
8. Application d'un substrat verrier selon l'une des revendications 4 à 7 comme vitrage hydrophobe de véhicule de transport.  8. Application of a glass substrate according to one of claims 4 to 7 as hydrophobic glazing of a transport vehicle.
9. Application d'un substrat verrier selon l'une des revendications 4 à 7 comme paroi de cabine de douche.  9. Application of a glass substrate according to one of claims 4 to 7 as a shower enclosure wall.
10. Application d'un substrat verrier selon l'une des revendications 4 à 7 comme vitrage intérieur facile à nettoyer.  10. Application of a glass substrate according to one of claims 4 to 7 as interior glazing easy to clean.
EP14747076.9A 2013-07-08 2014-07-03 Copolymer for a hydrophobic coating having an improved durability Withdrawn EP3019539A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1356694A FR3008100B1 (en) 2013-07-08 2013-07-08 COPOLYMER FOR HYDROPHOBIC COATING WITH IMPROVED DURABILITY
PCT/FR2014/051702 WO2015004368A1 (en) 2013-07-08 2014-07-03 Copolymer for a hydrophobic coating having an improved durability

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CA (1) CA2914824A1 (en)
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FR3063288B1 (en) * 2017-02-28 2019-03-22 Saint-Gobain Glass France WET PIECE ARTICLE COMPRISING HYDROPHOBIC GLAZING
US11059990B2 (en) * 2018-10-15 2021-07-13 Metashield Llc Anti-fouling coatings
WO2020190441A1 (en) 2019-03-19 2020-09-24 Applied Materials, Inc. Hydrophobic and icephobic coating

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WO2015004368A1 (en) 2015-01-15
US20160159952A1 (en) 2016-06-09
KR20160037158A (en) 2016-04-05
CA2914824A1 (en) 2015-01-15
CN105705535A (en) 2016-06-22
JP2016529352A (en) 2016-09-23
EA201690175A1 (en) 2016-05-31
MX2016000002A (en) 2016-06-07
US9714308B2 (en) 2017-07-25
FR3008100B1 (en) 2015-06-26

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