Accueil
Catégories
Ajouter le résultat dans votre panier Affiner la recherche
Etendre la recherche sur niveau(x) vers le bas
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
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 21904 - Périodique Bibliothèque principale Documentaires Disponible The best for red and yellow- A new additive technology for waterborne iron oxide pigment concentrates / Frank Kleinsteinberg in PAINTINDIA, Vol. LXX, N° 9 (09/2020)
[article]
Titre : The best for red and yellow- A new additive technology for waterborne iron oxide pigment concentrates Type de document : texte imprimé Auteurs : Frank Kleinsteinberg, Auteur ; Markus Vogel, Auteur Année de publication : 2020 Article en page(s) : p. 96-100 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dispersions et suspensions
Formulation (Génie chimique)
Granulométrie
Jaune
Lumière -- Diffusion
Opacifiants
Oxyde de fer
Pigments inorganiques
Potentiel zeta
Revêtements décoratifs:Peinture décorative
Rouge (couleur)
Taille des particules
ViscositéIndex. décimale : 667.9 Revêtements et enduits Résumé : In decorative coatings, the use of pigment concentrates is a modern and flexible way to produce colored 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, color 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 stabilize the pigments over a long period of time without any change in viscosity and it has to develop maximum color strength to avoid any waste of expensive pigments. Note de contenu : - Pigment concentrate technology
- Pigment dispersion process
- Electrostatic stabilization - Zeta potential
- Steric stabilization
- Discussion of the results
- Particle size and hiding power
- Viscosity and stability
- Zetal potential
- Fig. 1 : IHS — Chemical Economics Handbook — Inorganic color
pigments consumption of inorganic color pigments in 2014
- Fig. 2 : Relationship :Light scattering - particle size diameter
- Fig. 3 : Mechanisms of pigment stabilization
- Fig. 4 : Mode of electrostatic stabilization
- Fig. 5 : Interaction between pigment particles with and without additive
- Fig. 6 :Initial viscosities of the pigment concentrates
- Fig. 7 : Zeta potential - Iron oxide yellow zeta potential - PY 42
- Fig. 8 : Zeta potential - iron oxide red zeta potential - PR 101
- Fig. 9 : Stabilization of PY 42 requirements for a good stabilization PY 42
- Fig. 10 : Stabilization of PR 101
- Table 1 : Tested formulations
- Table 2 : Particle size and hiding powerEn ligne : https://drive.google.com/file/d/13OtDZPFJ2wwTzF9XSg8JoyUuUmU733V0/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34663
in PAINTINDIA > Vol. LXX, N° 9 (09/2020) . - p. 96-100[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 22359 - Périodique Bibliothèque principale Documentaires Disponible Weather-fast colours / Larry G. Lane in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 196, N° 4502 (07/2006)
[article]
Titre : Weather-fast colours Type de document : texte imprimé Auteurs : Larry G. Lane, Auteur Année de publication : 2006 Article en page(s) : p. 23-24 Langues : Anglais (eng) Catégories : Colorimétrie
Jaune
Orange (couleur)
Pigments
Résistance aux conditions climatiques
Résistance chimiqueIndex. décimale : 667.2 Colorants et pigments Résumé : Every day, colour formulators are challenged to select affordable pigments for coatings required for durable applications. Their choices are restricted due to environmental and performance concerns. Rockwood Pigments offers a novel chemistry that provides solutions in the yellow and orange colour space. Note de contenu : - New pigment chemistry
- Colour space
- Product performance
- Acid resistance
- Exterior weathering
- Performance
- Applications
- New optionsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27540
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 196, N° 4502 (07/2006) . - p. 23-24[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 005088 - Périodique Bibliothèque principale Documentaires Disponible
[article]
Titre : Why small is beautiful : Benefits of finer particle size in UV inks and coatings quantified Type de document : texte imprimé Auteurs : Mark Ortalano, Auteur Année de publication : 2017 Article en page(s) : p. 116-119 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents dispersants (chimie)
Brillance (optique)
Dispersions et suspensions
Encre jet d'encre
Essais (technologie)
Essais accélérés (technologie)
Granulométrie
Jaune
Pigments organiques
QuinacridoneLes pigments de quinacridone sont des pigments organiques de synthèses qui vont du rouge-orange au rouge-violet.
Ils sont utilisés depuis les années 1960 par les teinturiers et les fabricants de pigment set couleurs à peindre (et plus récemment par certains tatoueurs, comme pigment dans des encres de tatouage, avec un risque allergique).
Il s'agit de pigments très transparents, au fort pouvoir colorant mais modérément couvrants.
Leur transparence permet de varier les teintes selon la densité et l'épaisseur de l'application.
Rouge (couleur)
Taille des particules
Traîtements de surface
Transparence (optique)Index. décimale : 667.2 Colorants et pigments Résumé : The benefits that very small particle size pigments provide in a variety of graphics and design applications are considered. Gloss, chroma, transparency and strength can all be increased. Strategies to stabilise the small particles with improved dispersability and low viscosity are presented. Note de contenu : - Organic pigment production and dispersion
- Pigment and coating test procedures summarised
- Benefits of finer particle size illustrated
- Monoarylide yellow shows similar gains
- Importance of dispersants and surface treatments
- Optimising pigment efficiency
- FIGURES : 1. TEM images of primary pigment particles (identified by C.I. numbers) and associations of pigments - 2. Basic concept of the dispersing mechanism - 3. Representative reduction in particle size for a quinacridone pigment, where the red line shows a conventional size pigment dispersion, and the green line the much smaller particle dispersion - 4. Colour improvement due to finer grinding with C.I. pigment red 122 in a UV curable application - 5. Chroma achieved relative to particle size reduction as a function of the amount of C.I. pigment red 122 in a UV inkjet ink - 6. Inks made and printed over foil and coated paper demonstrates the high degre of transparency achieved by the smaller particles - 7. TEM of C.I. pigment yellow 74 with and without additive technology
- TABLE : Increased gloss and colour strength of C.I. pigment yellow 74 in aqueous system relative to reduction in particle sizeEn ligne : https://drive.google.com/file/d/1PHbjnysZj-K0JFExM098PJjCWx4oQCuQ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28274
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 4 (04/2017) . - p. 116-119[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 18809 - Périodique Bibliothèque principale Documentaires Disponible Yellow pigment of Metarhizium anisopliae and its application to the dyeing of fabrics / Biaobiao Yan in COLORATION TECHNOLOGY, Vol. 135, N° 4 (08/2019)
[article]
Titre : Yellow pigment of Metarhizium anisopliae and its application to the dyeing of fabrics Type de document : texte imprimé Auteurs : Biaobiao Yan, Auteur ; Muying Yang, Auteur ; Qingqing Zhou, Auteur ; Tieling Xing, Auteur ; Guoqiang Chen, Auteur ; Jiayong Sheng, Auteur Année de publication : 2019 Article en page(s) : p. 267-274 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Fibres animales
Jaune
Laine
Pigments bactériens
Soie et constituants
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Microbial dyes have received substantial attention because of their natural environmental protection, simple access, and reduced regional and seasonal restriction. In this work, a microbial dye, the yellow pigment produced by Metarhizium anisopliae, was first studied then applied. The strain produced by the culture was identified, and the conditions for producing yellow pigment were optimised. Further, the stability of M. anisopliae yellow pigment was examined, and the pigment was applied to the dyeing of silk and wool fabrics. The results showed that the homology of the strain with M. anisopliae was 99.98%. In liquid fermentation culture, the optimal carbon source was glucose, and the dosage was 30 g/l. The maximum pigment yield can be obtained by culturing with 4% v/v of inoculation quantity at pH 7 and 30 °C. In addition, the effects of pH, temperature and metal ions on the yellow pigment of M. anisopliae were significant. The optimum dyeing process conditions were dyeing temperatures of 80 °C for silk and 90 °C for wool, with a dyeing time of 60 min. This research developed a novel microbial dye and studied its application for the dyeing of protein fibres. Note de contenu : - EXPERIMENTAL : Materials - Preparation of pigment solution - Identification of strains - Optimisation of medium composition and fermentation process - Dyeing - Characterisations
- RESULTS AND DISCUSSION : Preparation of M. anisopliae yellow pigment solution - Identification - UV absorption spectrum and chromaticity - Optimisation of fermentation medium and process - Stability of yellow pigment - Dyeing process and colour fastness of the fabricsDOI : 10.1111/cote.12401 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12401 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32829
in COLORATION TECHNOLOGY > Vol. 135, N° 4 (08/2019) . - p. 267-274[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 21090 - Périodique Bibliothèque principale Documentaires Disponible