A darker shade of black / Vipul Joshi in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 193, N° 4471 (12/2003)

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 193, N° 4471 (12/2003) . - p. 11-12 Titre : A darker shade of black Type de document : texte imprimé Auteurs : Vipul Joshi, Auteur ; Lang Nguyen, Auteur Année de publication : 2003 Article en page(s) : p. 11-12 Langues : Anglais (eng) Catégories : Automobiles -- Revêtements:Automobiles -- Peinture Formulation (Génie chimique) Noir de carbone Pigments à effets spéciaux Primaire (revêtement) Index. décimale : 667.2 Colorants et pigments Résumé : High performance coatings require high jet-black pigments, but achieving this high colour strength is a challenge with new formulations technologies such as waterborne and HAPS-free. Carbon black is used in many types of coatings applications, but it's the automotive application that is the most demanding. When developing high-colour performance automotive base-coats, the coatings formulator is still faced with long and costly dispersion times. And, the challenge of dispersing and stabilising high-colour carbon blacks is made more difficult due to changes in coatings technologies driven by environmental (VOC) concerns. Because new waterborne technologies can reduce VOC emissions by half - verses conventional solventborne base-coats 1 - formulators in Europe and North America have been transitioning to waterborne and HAPS-free automotive base-coats. Europe is leading the shift towards environmentally friendly automotive coatings technologies, followed by North America. Japan is also making plans to move towards waterborne and this trend will find its way to other major automotive markets, such as Asia Pacific and South America. Note de contenu : - Technology shift - Performance results - Base-coat evaluation - Colour performance properties - Dispersibility - TABLES : 1. Milibase formulation - 2. Masterbatch letdown formulation - 3. Formulation constants - 4. Curing schedule - 5. Masstone colour performance - 6. Tinting colour performance - 7. Colour development time Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27785 [article]

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Highly dispersible carbon black : easily dispersed in water-based systems / Alexandre Giardino Carmello in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4616 (01/2016)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 206, N° 4616 (01/2016) . - p. 24-30 Titre : Highly dispersible carbon black : easily dispersed in water-based systems Type de document : texte imprimé Auteurs : Alexandre Giardino Carmello, Auteur ; Lang Nguyen, Auteur ; Jerry Keybl, Auteur ; Geoffrey Moeser, Auteur ; Lynne Richard, Auteur ; Jeffrey Baillargeon, Auteur ; Qingling Zhang, Auteur Année de publication : 2016 Article en page(s) : p. 24-30 Langues : Anglais (eng) Catégories : Dispersions et suspensions Fragmentation Noir de carbone Pigments inorganiques Revêtements en phase aqueuse:Peinture en phase aqueuse Index. décimale : 667.9 Revêtements et enduits Résumé : Development and benefits of the company's new pigments for water-based systems to meet environmental and production criteria. Note de contenu : - CURRENT CHALLENGES OF CARBON BLACK PIGMENTS - NEW HIGHLY DISPERSIBLE CARBON BLACK TECHNOLOGY - STUDIES AND RESULTS : Preparation of millbases - A comparison - Letdown and final paint preparation - masstone and tint - Results En ligne : https://drive.google.com/file/d/1Wy3cPwxOD9RC7W11Cu1Rjv45GbuZb-tb/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25299 [article]

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Jet-age production for waterbornes / Qingling Zhang in EUROPEAN COATINGS JOURNAL (ECJ), N° 12 (12/2014)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 12 (12/2014) . - p. 78-81 Titre : Jet-age production for waterbornes : Stir-in carbon blacks offer production and quality advantages Type de document : texte imprimé Auteurs : Qingling Zhang, Auteur ; Lynne Richard, Auteur ; Lang Nguyen, Auteur ; John Mathew, Auteur ; Jeffrey Baillargeon, Auteur ; Geoffrey Moeser, Auteur ; Benjamin Dupnik, Auteur Année de publication : 2014 Article en page(s) : p. 78-81 Langues : Anglais (eng) Catégories : Formulation (Génie chimique) Hydrophilie Noir de carbone Pigments inorganiques Revêtements en phase aqueuse:Peinture en phase aqueuse Traîtements de surface Index. décimale : 667.9 Revêtements et enduits Résumé : A hydrophilic surface treatment applied to carbon blacks during production allows them to be dispersed in waterborne systems using only a standard high speed mixer. Dispersion quality, hiding and tinting power of these 'stir in' pigments can be slightly better than equivalent untreated grades, while dispersant demand is much lower. Note de contenu : - Stir-in blacks offer cost and environmental benefits - Conventional and stir-in pigment millbases compared - Pigments compared in masstone and tints - Why hydrophilic treatment must be optimised - Stir-in pigments need much less dispersant - Increased tint strength obtained - Stir-in black shows improved pigment distribution - More concentrated millbases can also be produced - Fast and flexible production En ligne : https://drive.google.com/file/d/1HvNChT300OCIbezoCcK8XTtaUKnZyBxz/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22467 [article]

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Optimising jetness / Angelica Sanchez in EUROPEAN COATINGS JOURNAL (ECJ), N° 4 (04/2017)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 4 (04/2017) . - p. 122-128 Titre : Optimising jetness : Achieving a 'piano black' appearance through dispersion and stabilisation Type de document : texte imprimé Auteurs : Angelica Sanchez, Auteur ; Lang Nguyen, Auteur ; Eugene Step, Auteur Année de publication : 2017 Article en page(s) : p. 122-128 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dispersions et suspensions Formulation (Génie chimique) Noir de carbone Pigments inorganiques Polyacryliques Polyesters Revêtement en phase solvant:Peinture en phase solvant Revêtements en phase aqueuse:Peinture en phase aqueuse Traîtements de surface Index. décimale : 667.9 Revêtements et enduits Résumé : Pigment manufacturers and coating formulators are often faced with a trade-off between colour performance and a stabilised dispersion. Novel technologies that maximise the benefits of accelerated dispersion and surface treatment offer of the carbon black pigment offer enhanced performance in formulations based on polar and non-polar fluids. Note de contenu : - Pigment particle size morphology and chemistry key drivers of dispersability - Good dispersion enhances jetness - Surface treatment improves colour stability - Outperforming untreated blacks in polar formulations - Improved compatibility with non-polar formulations - Accelerating dispersion to improve performance - A solution for maximum jetness - FIGURES : 1. Schematic representation of the carbon black dispersion process from reactor to final coating formulation. Dispersion (in red) illustrates a system thtat reaches colloidal stability, flocculation (in blue) illustrates a system that is not stable and flocculates into a 3D-network - 2. Carbon black morphology map in terms of oil absorption number (OAN) and particle externatl surface area based on statistical method (STSA) - 3. Schematic representation of the carbon black surface after it's formation in the carbon black reactor - 4. Dispersion of surface-modified carbon black in water-borne systems - 5. CIELab colour measurements for carbon black materials in water-borne acrylic formulations. L* is a measure of the lightness/darkness of the coating, lower values indicate darker colour or higher jetness ; b* is a measure of the blue/yellow undertone (lower number indicates bluer colour) - 6. Mc value for carbon black materials in water-borne acrylic formulations and milling time necessary to achieve the corresponding Mc value - 7. Mc for carbon black materials in water-borne acrylic formulations as function of dispersant concentration for oxidised and "Emperor" carbon blacks. The * indicates the optimal dispersant concentration needed to achieve the highest Mc value - 8. Evolution of colour for carbon blacks treated using oxidation and dispersion accelerator technology as measured by darkness L* in a solvent-borne polyester coating formulation En ligne : https://drive.google.com/file/d/1b3jdP5Bc6OtFxHXHCvoQdrkWzOlQzs3n/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28276 [article]

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