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Synthesising polymeric dispersants to apply to carbon black pigmented mill bases for use in ink-jet inks / Chun Yoon ; Jae-Hong Choi in COLORATION TECHNOLOGY, Vol. 136, N° 1 (02/2020)
[article]
Titre : Synthesising polymeric dispersants to apply to carbon black pigmented mill bases for use in ink-jet inks Type de document : texte imprimé Auteurs : Chun Yoon, Auteur ; Jae-Hong Choi, Auteur Année de publication : 2020 Article en page(s) : p. 60-74 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents dispersants (chimie)
Encre jet d'encre
Noir de carbone
Polymères -- Synthèse
Polymères en émulsionIndex. décimale : 667.4 Encres Résumé : Dyes are an important component of drop-on-demand ink-jet inks and are commonly used in desktop printers. While they offer bright, vivid colour, these dyes exhibit poor light and water fastness. To combat this, researchers have started using pigmented ink-jet inks instead of dye-based inks to improve light and water fastness, but the pigments are insoluble in ink vehicles. To use pigments, dispersants must be applied ; however, this is a delicate process because the properties of the dispersant substantially affect how the pigmented mill base must be prepared. In this study, polymeric dispersants are synthesised based on the properties and ratios of monomers and the molecular weights of polymers. In total, 14 types of polymeric dispersants are synthesised and examined, with special attention paid to the dispersing properties of particle size reduction and the stability of the pigmented mill base used to prepare drop-on-demand ink-jet inks. This study describes the synthesis of the dispersants in terms of their suitability for commercial application. Note de contenu : - EXPERIMENTAL : Equipment - Materials - Chemical synthesis of polymers and preparation of dispersant solutions - Preparatioin of pigmented mill bases - Preparation of ink-jet ink formulations
- RESULTS AND DISCUSSION : Polymer (polymer dispersant) synthesis - Preparation and physical properties of pigment mill bases - Physical and printing properties of ink formulationsDOI : https://doi.org/10.1111/cote.12446 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12446 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33700
in COLORATION TECHNOLOGY > Vol. 136, N° 1 (02/2020) . - p. 60-74[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21546 - Périodique Bibliothèque principale Documentaires Disponible Tailored and resistant / Philippe Favresse in PAINTINDIA, Vol. LXIII, N° 11 (11/2013)
[article]
Titre : Tailored and resistant : More corrosion resistance in aqueous coatings through new wetting and dispersing additives Type de document : texte imprimé Auteurs : Philippe Favresse, Auteur ; Frank Kleinsteinberg, Auteur ; Katrin Roland, Auteur ; Patrick Glöckner, Auteur Année de publication : 2013 Article en page(s) : p. 60-63 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents dispersants (chimie)
Agents mouillants
Anticorrosifs
Anticorrosion
Copolymères greffés
Essais (technologie)
Formulation (Génie chimique)
Polyaddition
Polymérisation radicalaire controlée
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : Wetting and dispersing additives are indispensable for the production of high quality pigment concentrates with a high color strength and adequate storage stability. However, especially with aqueous coatings, the resistance of corresponding films can deteriorate because of their hydrophilic structure.
The aim of this study was to develop polymeric wetting and dispersing additives for aqueous pigment concentrates which display no significant negative impact on the corrosion protection of aqueous coatings. The polymers were produced using various polymerization processes and comparatively evaluated.Note de contenu : - Wetting and dispersing additives enable a productive dispersion process
- Investigated wetting and dispersing additives
- Production of the pigment concentrates
- Test coatings
- Test methods
- Discussion of the results : Rheological properties of the pigment concentrates
- Coloristic properties at the highest level
- A new benchmark for corrosion resistance
- Reduced water absorption improves resistancePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20336
in PAINTINDIA > Vol. LXIII, N° 11 (11/2013) . - p. 60-63[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15933 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Tailored to endure : New dispersing additives help to protect aqueous coatings against corrosion Type de document : texte imprimé Année de publication : 2013 Article en page(s) : p. 104-107 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents dispersants (chimie)
Anticorrosifs
Anticorrosion
Copolymères greffés
Pigments
Polyaddition
Polymérisation radicalaire controlée
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : Graft copolymer pigment dispersants were produced by free radical and controlled radical polymerisation and their performance was evaluated in two pigment concentrates for waterborne coatings. Both production technologies produced similar performance, but by modifying the composition of the additive the corrosion resistance of the coatings could be enhanced. Note de contenu : - Wetting and dispersing additives enable a productive dispersion process
- How dispersant structure can affect performance
- Dispersants may be made be several different routes
- Properties of pigments and additives studied
- Test coatings and test methods
- Rheological properties of the pigment concentrates
- Colour strength is enhanced
- Resistance to salt spray and water both improved
- Impact of structure and composition summarisedEn ligne : https://drive.google.com/file/d/1SqJnoHN0IVvklYKHRqxWbGDc_pdCd361/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17719
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 3 (03/2013) . - p. 104-107[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14777 - Périodique Bibliothèque principale Documentaires Disponible Taking the next step in fast curing 2K NCO technology / F. Fallani in SURFACE COATINGS INTERNATIONAL, Vol. 104.2 (03-04/2021)
[article]
Titre : Taking the next step in fast curing 2K NCO technology Type de document : texte imprimé Auteurs : F. Fallani, Auteur ; G. Fuerpass, Auteur ; Andringa (H.), Auteur ; B. Mulder, Auteur Année de publication : 2021 Article en page(s) : p. 130-135 Langues : Anglais (eng) Catégories : Agents dispersants (chimie)
Durée de vie en pot
Essais de brouillard salin
Formulation (Génie chimique)
Haut extrait sec
Isocyanates
Polyacryliques
Polyols
Réticulation rapide
Revêtements bi-composant
VernisIndex. décimale : 667.9 Revêtements et enduits Résumé : Obtaining an improved balance between drying time and pot life is an ever-ongoing challenge in 2K isocyanate coatings. In this paper, allnex presents technology that takes 2K NCO curing to the next level, shortening the drying time down to 1 hour at room temperature, while increasing the pot life. In addition, the open time can be tuned and early hardness and chemical resistance are significantly improved. Note de contenu : - Clear coat application performance
- SETALUX FC medium solids acrylic polyols
- SETALUX FC high solids acrylic polyols
- Study of clear coat conversion and coating properties
- DUROFTAL FC high solid polyester polyols for top coat application
- Formulation advice
- Table 1 : Comparison of application data of new FC technology with standard medium solids
- Table 2 : SETALUX FC high solids grades
- Table 3 : Comparison of application data of new FC technology with standard high solids systems
- Table 4 : Comparison of TG and crosslinking density between a standard system and the new fast cure technology
- Table 5 : DURFTAL FC high solids grades
- Table 6 : Paint data and drying performances of DUROFTAL FC and SETALUX FC grades versus high solids acrylic references
- Table 7 : Hardness development and MEK resistance of DUROFTAL FC SETALUX FC grades versus high solids acrylic references
- Table 8 : Salt spray and humidity resistance data of red pigmented topcoat based on DUROFTAL FC 2828
- Table 9 : Top coat formulations based on DUROFTAL FC 9511/80BAC
- Fig. 1 : Pot life-drying balance comparison of new Fast Cure technology with a standard medium solids system : the size of the circles correlates with the hardness measured 1h after curing for 30 minutes at 60°C
- Fig. 2 : Pot life-drying balance comparison of new Fast Cure technology with standard high solids systems ; the size of the circles correlates with the hardness measured 1 hour after tack-free time at RT
- Fig. 3 : Isocyanate conversion versus time determined with infrared spectroscopy
- Fig. 4 : Salt spray testing on red pigmented topcoat based on DUROFTAL FC 2828 for 1000 hours
- Fig. 5 : Impact of dispersant on pot life of top coat formulations based on DUROFTAL FC 9511/80BAC
- Fig. 6 : Spider diagram summarising the advantages and special features of high solids fast cure resinsEn ligne : https://drive.google.com/file/d/1engh2Nu8Zn9NyaXRMIVrBoi1jPPEC-dD/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36000
in SURFACE COATINGS INTERNATIONAL > Vol. 104.2 (03-04/2021) . - p. 130-135[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22905 - Périodique Bibliothèque principale Documentaires Disponible The best for red and yellow / Frank Kleinsteinberg in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 210, N° 4663 (08/2020)
[article]
Titre : The best for red and yellow Type de document : texte imprimé Auteurs : Frank Kleinsteinberg, Auteur ; Markus Vogel, Auteur Année de publication : 2020 Article en page(s) : p. 15-16 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Additifs
Agents dispersants (chimie)
Agents mouillants
Caractérisation
Jaune
Oxyde de fer
Pigments inorganiques
Potentiel zeta
Rhéologie
Rouge (couleur)
Stabilité au stockage
Taille des particulesIndex. décimale : 667.2 Colorants et pigments Résumé : The author discusses a new additive technology for waterborne iron oxide pigment concentrates.
In decorative coatings, the use of pigment concentrates is a modem and flexible wayto produce coloured paints. Especially in waterborne applications, these concentrates have to be suitable for a broad range of different binder technologies. Because of that, the concentrate formulations are usually free of binders and feature a broad compatibility. Furthermore, the demands in terms of storage stability, colour strength and cost efficiency are very high. These demands are addressed directly to the used additive technology. The additive has to induce outstanding viscosity reduction to achieve the highest pigment loads and the most economic grinding. It has to stabilise the pigments over a long period of time without any change in viscosity and it has to develop maximum colour strength to avoid any waste of expensive pigments.
The most important pigment class in decorative coatings are the iron oxides. Iron oxides are not difficult to wet because of their shape. Iron oxide yellow tends to give dilatant rheology, which can be a disaster when it comes to automatically dosing in a dispensing machine. Iron oxide red, on the other hand, tends to increase the viscosity of pigment concentrates over time.
This paper elucidates to different structures of wetting and dispersing additives, which could be used in waterborne, binder-free pigment concentrates for iron oxides and their performance. It is focused on the stability and the wetting of the pigments, which are reflected by the viscosity reduction, the storage stability of the pigment concentrates and the colouristic properties. For the characterisation of the wetting behaviour and the dispersing efficiency, the zeta potential has been used. In the end, advice and guidelines for formulating iron oxide pigment concentrates will be given.Note de contenu : - Pigment concentrate technology
- Pigment dispersion process
- Electrostatic stabilisation - Zeta potential
- Steric stabilisation
- Discussion of the results
- Particle size andhiding power
- Viscosity and stability
- Zeta potentialEn ligne : https://drive.google.com/file/d/1y0_JPiIZxLA8SxrNLDp3PBsmcTfHJWJH/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34450
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 210, N° 4663 (08/2020) . - p. 15-16[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21904 - Périodique Bibliothèque principale Documentaires Disponible PermalinkThe use of naphthenic acid ester as a dispersing agent in aqueous conductive primers / James L. Carmine in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 66, N° 836 (09/1994)
PermalinkThe versatility of silicones / Vicky James in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 202, N° 4576 (09/2012)
PermalinkPermalinkTiO2 efficiency in coatings : products and techniques for opacity optimisation in PAINTINDIA, Vol. LXVII, N° 5 (05/2017)
PermalinkUse of novel polyetheralkanolamine comb polymers as pigment dispersants for aqueous coating systems / Nguyên-Dang-Tâm in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 3 (09/2007)
PermalinkUse of ultrasonic & sound waves energy in paint technology : a review / Amar Rahate in PAINTINDIA, Vol. LXV, N° 2 (02/2015)
PermalinkUsing six sigma tools to evaluate pigment dispersant demand performance / Mary E. Koban in COATINGS TECH, Vol. 1, N° 2 (02/2004)
PermalinkPermalinkPermalinkYmer N120 : use in nonionic polyurethane dispersions / Henrik Bernquist in PAINTINDIA, Vol. LXII, N° 9 (09/2012)
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