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Cooler options for spray coatings / Udo Schonhoff in EUROPEAN COATINGS JOURNAL (ECJ), N° 2 (02/2018)
[article]
Titre : Cooler options for spray coatings : Diamide-based rheology modifiers offer quick activation at low temperatures Type de document : texte imprimé Auteurs : Udo Schonhoff, Auteur ; Carlos Feito, Auteur ; Frank Abschlag, Auteur ; Elke Piron, Auteur Année de publication : 2018 Article en page(s) : p. 40-45 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Amides
Dépôt par pulvérisation
Epaississants
Essais d'adhésion
Marines (peinture)
Revêtement en phase solvant:Peinture en phase solvant
Revêtements -- Additifs:Peinture -- Additifs
Rhéologie
ViscositéIndex. décimale : 667.9 Revêtements et enduits Résumé : Many industrial, maintenance and marine spray coatings have very high requirements in terms of sag stability and layer thickness – around 1000u% or greater in one pass. These specific needs limit the selection of suitable rheology modifiers. Novel diamide-based additives now offer processors flexibility over a wide range of activation temperatures and improved viscosity at low shear forces. Note de contenu : Many industrial, maintenance and marine spray coatings have very high requirements in terms of sag stability and layer thickness – around 1000u% or greater in one pass. These specific needs limit the selection of suitable rheology modifiers. Novel diamide-based additives now offer processors flexibility over a wide range of activation temperatures and improved viscosity at low shear forces.
- Rheology modifiers for a wide range of solvents
- Activation at low temperatures
- Improved viscosity at lower shear forces
- Robust intercoat adhesion
- Highest viscosity and layer thickness with millbase addition
- FIGURES : 1. Flow characteristics provided by the various classes of rheological modifiers – 2. Schematic representation of the mechanisms of action of a diamide-based rheology modifier after correct activation – 3. Optimum activation temperature range – 4. Rheology curves of a solvent-based protective and marine coating equipped with 1% of the relevant rheology modifier activated at 63°C – 5. Viscoelastic behavior of test systems. The yellow line indicates the point at which shear was stopped after application – 6. Intercoat adhesion testing – 7. Low-shear viscosity data at 0.1 s-1 and the maximum applicable layer thickness by blade application in accordance with the specified incorporation and activation methodEn ligne : https://drive.google.com/file/d/1vaAw4Ird5xDgf-NRJJ7T8atQpRzKPVxu/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30198
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 2 (02/2018) . - p. 40-45[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19608 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Difficult substrates well wetted : A low-foaming, low-VOC wetting agent that contains no APEOs Type de document : texte imprimé Auteurs : Vimal Saini, Auteur ; Wolfgang Fuchs, Auteur ; Elke Piron, Auteur ; Carlos Feita, Auteur ; Udo Schonhoff, Auteur ; Frank Abschlag, Auteur Année de publication : 2019 Article en page(s) : p. 30-36 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dispersions et suspensions
Mouillage (chimie des surfaces)
Polyacryliques
Revêtements organiques
Vernis en phase aqueuse -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : As environmental regulations keep getting tighter and eco-friendly coatings become more popular, the time is ripe for a low-VOC wetting agent that is free of alkylphenol ethoxylates. It is designed to maximise wetting on even difficult-to-wet sub-strates and in a Ovide range of applications, such as aqueous coatings, TiO2 slurries, pigment concentrates, adhesives and inks. Note de contenu : - Wetting basics
- Challenging water-bornes
- Experimental : Samples - Lower surface tension - Smaller contact angle - Look - No foam !
- Evaluation 1 : acrylic dispersion clearcoat
- Evaluation 2 : White wood-coating based on self-crosslinking acrylic dispersion
- Improved surface wetting - Better blocking resistance
- Good pore-filling
- Relative overall performance
- Substrate wettability in OPV ink and adhesive systems
- Fig. 1 : Contact angles formed by sessile liquid drops on a smooth homogeneous surface
- Fig. 2 : Static surface tension of aqueous solutions conhaining 0.3 wt.% wetting agent
- Fig. 3 : Evolution of advancing contact angle with 0.3% aqueous solutions of wetting agents on untreated polypropylene plastic and on glass substrate
- Fig. 4 : Foaming behaviour in aqueous solution
- Fig. 5 : Brush-applied clearcoat on Leneta test chart
- Fig. 6 : Wetting performance in white wood coating based on self-crosslinking acrylic dispersion
- Fig. 7 : Improved blocking resistance with "Supread 2059"
- Fig. 8 : Pore-filling ability via spray application (scale in all samples - A mm, except reference 3 : 3 mm
- Table 1 : Transparent clearcoat based on acrylic dispersion
- Table 2 : Wood coating based on self-crosslinking acrylic dispersion
- Table 3 : White window paint test formulation
- Table 4 : Overall application performanceEn ligne : https://drive.google.com/file/d/1lnxpVc1v-ODQoDM0yd7J0cD1M50ClE5P/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33166
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 11 (11/2019) . - p. 30-36[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21296 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Getting more with wax : A new generation of organic thixotropes for your adhesive and sealant formulations Type de document : texte imprimé Auteurs : Udo Schonhoff, Auteur ; Carlos Feito, Auteur ; Frank Abschlag, Auteur ; Elke Piron, Auteur ; Jörg Bungarten, Auteur Année de publication : 2019 Article en page(s) : p. 44-49 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cires
Colles:Adhésifs
Epaississants
Mastics
Polymères à silane modifié
Rhéologie
ThixotropieIndex. décimale : 667.9 Revêtements et enduits Résumé : Adhesives and sealants based on modern silylated hybrid polymers, also called modified-silane polymers (MS, MSP or SPUR), are typically applied in very high thicknesses to fill wide gaps. That means that high sag- and slump-stability are required di-rectly after the application. Note de contenu : - Why is this a step forward ?
- Chemistry and activation
- Application in solvent-free adhesives and sealants
- Fig. 1 : Mechanism of diamide-based organic thixotropes
- Fig. 2 : Comparison of the new organic thixotrope with conventional organic thixotropes
- Fig. 3 : Sag stability with different concentration of the thixotrope
- Fig. 4 : Viscosity build depending on concentration - thixotrope vs fumed silica
- Fig. 5 : Flow point depending on concentration
- Fig. 6 : Thread description
- Fig. 7 : Extrusion rates versus viscoelastic data
- Fig. 8 : Viscosity and shear stress depending on shear rateEn ligne : https://drive.google.com/file/d/1DRfwHAAaJ7XRg_xuW5qoV54LFfktTi66/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33052
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 10 (10/2019) . - p. 44-49[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21242 - Périodique Bibliothèque principale Documentaires Disponible Multifunctional superwetting agent for coating applications / Vimal Saini in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4657 (12/2019)
[article]
Titre : Multifunctional superwetting agent for coating applications Type de document : texte imprimé Auteurs : Vimal Saini, Auteur ; Wolfgang Fuchs, Auteur ; Elke Piron, Auteur ; Carlos Feito, Auteur ; Udo Schonhoff, Auteur ; Frank Abschlag, Auteur Année de publication : 2019 Article en page(s) : p. 15-20 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents mouillants
Angle de contact
Formulation (Génie chimique)
Polyacryliques
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs
Tension superficielleIndex. décimale : 667.9 Revêtements et enduits Résumé : Wetting agents are added to waterborne coatings in order to increase the wetting of the substrate and to improve the compatibility with pigments and other components. Selection of the suitable wetting agent for desired formulation and application properties is critical. For example, anionic wetting agents can have excellent dynamic surface tension control but can often result in an increase in the foaminess of the grind that may appear as microfoam in the applied coating. Low foaming nonionic wetting agents have found value in industrial coatings, where microfoam cannot be tolerated however, they do not provide adequate surface tension control.
To overcome these limitations, a new low foaming, silicon and APEO free multifunctional wetting agent has been developed (SUPREAD® 2059). It provides antifoaming properties, as well as offering fast dynamic surface tension reduction for improved flow and levelling on difficult to wet surfaces like wood, plastics etc. The newly developed multifunctional wetting agent was tested in various coating formulations. The results of the study reveals its outstanding ability in surface wetting, antifoaming, pore filling on wood, block resistance and has shown no negative impact on gloss or rheology.Note de contenu : - BASICS OF WETTING
- CHALLENGES IN WATERBORNE COATINGS : Sample examined - Surface tension - Contact angle - Foaming behaviour
- EVALUATION IN CLEAR COAT BASED ON ACRYLIC DISPERSION
- EVALUATION IN WHITE WOOD COATING BASED ON SELF6CROSSLINKING ACRYLIC DISPERSION : Improved surface wetting - Block resistance - Pore filing ability - Overall performance comparison - Substrate wettability in OPV ink and adhesive system
- Fig. 1 : Illustration of contact angles formed by sessile liquid drops on a smooth homogeneous surface
- Fig. 2 : Static surface tension comparison of aqueous solutions containing 0.3wt% wetting agent
- Fig. 3 : Evolution of advancing contact angle with 0.3% aqueous solutions of wetting agents a) in glass substrate and b) on untreated polypropylene plastic
- Fig. 4 : Foaming behaviour with the Skandex shaker
- Fig. 5 : Rheograms of the clear coat
- Fig. 6 : Brush applied clear coat on Lenata chart
- Fig. 7 : Wetting performance in white wood coating based on self-crosslinking acrylic dispersion Brush applied clear coat on Lenata chart
- Fig. 8 : Improved block resistance with Supread® 2059
- Fig. 9 : Pore filling ability via spray application (Scale in all samples -1mm (only except Reference 3-3mm)
- Fig. 10 : Surface wettability comparison with 0.3% Supread® 2059 al In OPV system on PVC wallpaper bl BOPP film
- Table 1 : Samples examined
- Table 2 : Application properties of clear coat based with different wetting agents
- Table 3 : Overall application performance comparison
- Table 4 : Transparent clear coat based on acrylic dispersion
- Table 5 : Based on self-crosslinking acrylic dispersion
- Table 6 : White window paint test formulationEn ligne : https://drive.google.com/file/d/16NX56HuRVYQUKgsuozi6IysnzQju6B6v/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33395
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 209, N° 4657 (12/2019) . - p. 15-20[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21487 - Périodique Bibliothèque principale Documentaires Disponible New, highly efficient associative thickeners in modern coating formulation / Carlos Feito in SURFACE COATINGS INTERNATIONAL, Vol. 104.1 (01-02/2021)
[article]
Titre : New, highly efficient associative thickeners in modern coating formulation Type de document : texte imprimé Auteurs : Carlos Feito, Auteur ; Udo Schonhoff, Auteur ; Frank Abschlag, Auteur Année de publication : 2021 Article en page(s) : p. 30-35 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acétate de vinyle L'acétate de vinyle est l'ester de l'acide acétique (acide éthanoïque) avec le tautomère alcoolique de l'éthanal (acétaldéhyde) et de formule semi-développée, CH3COO–CH=CH2.
L'acétate de vinyle est préparé, en règle générale, en phase vapeur, en faisant réagir un grand excès d'acétylène sur de l'acide acétique (200 °C) en présence de catalyseurs au zinc et au cadmium). On obtient un liquide incolore à odeur très pénétrante qui ne se polymérise en polyacétate de vinyle (PVAC) qu'en présence de catalyseurs et donne des solides durs très stables à la chaleur. Il peut être copolymérisé avec d'autres composés vinyliques ou d'autres monomères.
Bois -- Revêtements protecteurs
Copolymère éthylène acétate de vinyle
Copolymère styrène acrylique
Epaississants
Formulation (Génie chimique)
Polyacryliques
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs
RhéologieIndex. décimale : 667.9 Revêtements et enduits Résumé : Numerous kinds of associatively acting thickeners are available on the market, all of which influence viscosity in different ways. The choice of a suitable product is governed by the respective performance requirements. In addition, an important role is also played by the increasingly stringent environmental regulations and the costs to be expected. Doing justice to these demands, e.g. for ecolabels, Germany's'Blauer Engel', etc., requires appropriate adaptation of the formulations and thus also of the corresponding raw materials. Note de contenu : - Part 1 : Efficiency assessment in different binder systems
- Part 2 : Complexity reduction
- Part 3 : Influence of RHEOLATE HX 6008 on the properties of the finished paint system
- Fig. 1 : Overview of thickener classes
- Fig. 2 : Network structure in a NiSAT-thickened paint
- Fig. 3 : Efficiency og RHEOLATE HX 6808 and 6050 in pure acrylic paint (PVC 30)
- Fig. 4 : Efficiency of RHEOLATE HX 6008 and 6050 in styrene-acrylic paint (PVC 50)
- Fig. 5 : Efficiency of RHEOLATE HX 6008 and 6050 in an emulsion paint based on vinyl acetate-VeoVA (PVC 50)
- Fig. 6 : Efficiency of RHEOLATE HX 6008 and 6050 in an emulsion paint based on vinyl acetate-ethylene (PVC 50)
- Fig. 7 and 8 : Flow characteristics of RHEOLATE HX 6008 and 6050 in comparison with reference thickener combinations
- Fig. 9 : Flow characteristics of RHEOLATE HX 6008 in an acrylic wood coating
- Table 1 : Concentration of the additive combinations
- Table 2 : Application result - RHEOLATE HX 6008 in a pure acrylic paint, PVC 30
- Table 3 : Application results - RHEOLATE HX 6050 in a VAE-based paint, PVC 50
- Table 4 : RHEOLATE HX 6008 in an acrylic wood coating - Application properties
- Table 5 : Binder assignment
- Table 6 : Formulations, PVC 30 and 50
- Table 7 : Formulation, acrylic wood coatingEn ligne : https://drive.google.com/file/d/1GZf4l6K0ceh4h_KcG6nNucABQl89mTiv/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35996
in SURFACE COATINGS INTERNATIONAL > Vol. 104.1 (01-02/2021) . - p. 30-35[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22824 - Périodique Bibliothèque principale Documentaires Disponible