Analysis of effect pigments / Katrin Thieme in EUROPEAN COATINGS JOURNAL (ECJ), (03/2023)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > (03/2023) . - p. 70-74 Titre : Analysis of effect pigments : On the way to perfect coatings for the automotive industry Type de document : texte imprimé Auteurs : Katrin Thieme, Auteur ; Lutz Berthold, Auteur ; Christian Patzig, Auteur Année de publication : 2023 Article en page(s) : p. 70-74 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Automobiles -- Revêtements:Automobiles -- Peinture Microstructures Nanostructures Pigments -- Analyse Pigments -- Propriétés optiques Pigments à effets spéciaux Index. décimale : 667.9 Revêtements et enduits Résumé : The optical performance of an automotive coating stands and falls with the property profile of the colour and effect pigments used. Modern, high-resolution micro- and nanostructure diagnostics are used to evaluate and specifically adjust this profile. Note de contenu : - Micro- and nanostructure determine the effect - Optical properties - Numerous parameters - Electron microscopy : only as good as the sample preparation - Non-destructive preparation - A question or orientation - Subnanometre resolution - STEM-EDXS analyses - 3D structure elucidation using nanotomography - Faster development, high quality En ligne : https://drive.google.com/file/d/1bleHGC_aKIMRya505wGO5aVPgizVWYAe/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38910 [article]

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Classification of pigments / M. Veeramani in PAINTINDIA, Vol. LXVI, N° 4 (04/2016)  

[article]  inPAINTINDIA > Vol. LXVI, N° 4 (04/2016) . - p. 98-102 Titre : Classification of pigments Type de document : texte imprimé Auteurs : M. Veeramani, Auteur Année de publication : 2016 Article en page(s) : p. 98-102 Langues : Anglais (eng) Catégories : Pigments -- Analyse Pigments inorganiques Pigments organiques Index. décimale : 667.2 Colorants et pigments Résumé : In the previous chapter we saw the historical information regarding Pigments and how it came into existence and used in Paints. Now let's see the classifications of Pigments. It is not sufficient for the artist to learn merely the general outline rules about pigments or to be familiar with them. Because of the wide variation in their individual behaviours and properties, each one must be noted by itself, and its relative position in the general classification must be learned. The most satisfactory way to classify a pigment is according to its source, because most of the significant properties which any pigment groups may have in common can be attributed to their composition. All point pigments are manufactured products ; regardless of whether they are obtained from natural or artificial sources, they will never be satisfactory unless they have been carefully prepared by expert methods. Note de contenu : - Native earths - Synthetic mineral colours - Inorganic pigments - Organic pigments : Important properties of organic pigments - Few categories of organic pigments - Retractive index and classification of pigments - Hiding pigments - Extender pigments - TABLES : 1. Classification of organic pigments - Compared pigments properties En ligne : https://drive.google.com/file/d/1GTOZ3kQYiu62lCrhFPs47ON60BJzwbLT/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26248 [article]

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Color forming property of derivatives and modification products of natural iridoids with methylamine / Xue Shao in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 1 (01/2015)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CX, N° 1 (01/2015) . - p. 1-6 Titre : Color forming property of derivatives and modification products of natural iridoids with methylamine Type de document : texte imprimé Auteurs : Xue Shao, Auteur ; Keyi Ding, Auteur ; Jun Liu, Auteur Année de publication : 2015 Article en page(s) : p. 1-6 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Couleur Iridoïdes Méthylamine Pigments -- Analyse Pigments -- Synthèse Index. décimale : 667.2 Colorants et pigments Résumé : Derivatives and modified products of five natural iridoids (geniposide, gentiopicroside, swertiamarin, loganin and morroniside) were obtained by derivatization or modification. Compounds before and after derivatization or modification were adopted to react with methylamine to investigate their color-forming property. The relationship between the color of the pigments and the structure was analyzed using ultraviolet-visible (UV-vis) spectroscopy. The results indicated that: (1) when the backbone of the iridoids was the same, the position of the modified substituent groups had the greatest effect on the color of the pigments formed. For example, methygentiopicroside aglycone and methylswertimarin aglycone have a similar skeleton structure, differing only at positions C-5 and C-6, and the pigments obtained from their reaction with methylamine were also similar i.e. bright yellow. However, geniposidic acid aglycone and genipin, which also have a similar skeleton structure, differing only in the substituent at position C-4, produce pigments of different color upon reaction with methylamine, one being dark blue and the other purple red. (2) In different buffer systems, i.e., phosphate buffered saline (PBS, pH=8.0) and acetate buffer (ACE, pH=5.0), the same iridoid formed pigments with different colors. (3) After the ?-? conjugation of benzoyl was introduced to the skeleton of loganin, genipin and morronin as a substituent group, the characteristic absorption wavelength of pigments changed. Taking loganin as an example, the characteristic absorption wavelength of pigments changed from 430 nm and 650, to 465 nm and 670 nm when reacted in PBS, and from 560 nm to 610 nm when reacted in ACE. The reason might be that the conjugation system became longer and the molecular structure became more stable. Note de contenu : - EXPERIMENTAL : Materials - Preparation of derivative of geniposide and its reaction with methylamine principal - METHODS : Preparation of geniposidic acid - Hydrolysis of geniposidic acid - The reaction of geniposidic acid aglycon with methylamine - Preparation of derivatives of gentiopicroside and swertiamarin and their reaction with methylamine principal - Method - Structural modification for natural iridoids the process for preparing benzoyl chloride - The reaction of natural iridoids with benzoyl chloride (taking geniposide as an example - Hydrolysis of iridoid glucosides - Color forming reaction of six iridoid aglycones with methylamine - RESULTS AND DISCUSSION : The color forming reaction of geniposidic acid aglycon with methylamine - The color-forming reaction of methygentiopicroside aglycone and methylswertimarin aglycone with methylamine - Comparing experiment for the color forming of three aglycones and their modification products color-forming result of loganin aglycon and its modification product (compound II) - Color-forming results of genipin, morroniside aglycone and their modification products (compounds I and III) En ligne : https://drive.google.com/file/d/1gUrJfpY8rqZKElx_riZHmxBdop7aRonT/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22790 [article]

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Colour technology of coatings / Wilhelm Kettler / Hannover [Germany] : Vincentz Network GmbH & Co. (2016) 

Titre : Colour technology of coatings Type de document : document électronique Auteurs : Wilhelm Kettler, Auteur ; Walter Franz, Auteur ; Peter Gabel, Auteur ; Stephan Gauss, Auteur ; Uwe Hempelmann, Auteur ; Rainer Henning, Auteur ; Hans-Jörg Kremitzl, Auteur ; Gerhard Rösler, Auteur ; Manfred Binder, Traducteur ; Sandra Weixel, Traducteur ; Gerhard Wilker, Traducteur Editeur : Hannover [Germany] : Vincentz Network GmbH & Co. Année de publication : 2016 Collection : European Coatings Library Importance : 298 p. Présentation : ill. ISBN/ISSN/EAN : 978-3-86630-600-4 Prix : 169 E Note générale : Index - Bibliogr. Langues : Anglais (eng) Langues originales : Allemand (ger) Catégories : Colorimétrie Microscopie Pigments Pigments -- Analyse Revêtements -- Coloration:Peinture -- Coloration vision des couleurs Index. décimale : 667.9 Revêtements et enduits Résumé : The Mission : The latest knowledge on the colour technology underpinning coatings in a single book – from the fundamentals of colour perception, to colour measurement and colour-order systems, through to the characterisation and practical application of pigments. The book serves as a vehicle for acquiring a solid grounding in the key principles underpinning the application of colour technology to coatings. Indispensable for coatings experts and those with aspirations in that direction. The Audience : Trainees, students and newcomers to the profession who are seeking to acquire a solid grounding in colour technology, as well as experts wishing to deepen, extend or refresh their knowledge. The Value : This book provides a comprehensive state-of-the-art survey of relevant industrial colour applications and explains the various physical physiological aspects of pigment optics. Colour problems discussed in this book include the optics and chemistry of solid-colour and effect pigments, colorant formulation, optical microscopy of effect colour shades for pigment identification, methods of elementary and advanced colorimetry, measurement and visual assessment of solid and effect colour shades, colour tolerances and acceptability, and colour-order systems. There is also a special chapter devoted to the newly emerging area of visual texture assessment of effect colour shades. Note de contenu : 1. Fundamentals of colour perception 2. Colour measurement, colour measurement systems and visual colour assessment 3. Visual colour assessment 4. Colour-order systems 5. Instrumental colour difference assessment 6. Definition and application of colour tolerances 7. Pigment optics – physical processes 8. Practical applications 9. Measuring the texture of effect finishes 10. Characterisation of pigments 11. Recipe prediction 12. Microscopic analysis of effect pigments Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27825

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How cool do pigments keep it ? / Bernd Neumann in EUROPEAN COATINGS JOURNAL (ECJ), N° 1 (01/2018)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 1 (01/2018) . - p. 40-44 Titre : How cool do pigments keep it ? : Laboratory techniques for evaluating NIR-reflecting colourants Type de document : texte imprimé Auteurs : Bernd Neumann, Auteur Année de publication : 2018 Article en page(s) : p. 40-44 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Pigments -- Analyse Réflectance Réflectivité thermique Index. décimale : 667.9 Revêtements et enduits Résumé : Solar reflectance values and heat-up curves were obtained for a range of pigments using a halogen light as a reproducible source of light and IR. It was found possible to correlate surface temperature of the pigments with their integral reflectance, despite the difference from the spectrum of sunlight. Note de contenu : - Evaluating nir reflecting materials - Temperature and emission spectra - How reflectance spectra of pigments were measured - Creating heat-up curves - Correlating visible colour to solar reflectance - Green leaves : nature's own heat-reduction system - Same solar reflectance - same heat up ? Not always En ligne : https://drive.google.com/file/d/1Y5Nm4tgAxYQxom528XnVv5e7Kl2CmU_Y/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29770 [article]

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Identifier les pigments et comprendre leurs propriétés à partir de la diffraction des rayons X / Pauline Martinetto in L'ACTUALITE CHIMIQUE, N° 387-388-389 (07-08-09-10/2014)  

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Influence of different dispersants on the quality and stability of aqueous quinacridone magenta pigment dispersion for ink-jet applications / Rafal Gaida in COLORATION TECHNOLOGY, Vol. 139, N° 6 (12/2023)  

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Measuring effects / Werner Rudolf Cramer in EUROPEAN COATINGS JOURNAL (ECJ), N° 1 (01/2019)  

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On the road to a finer shine / Carlos E. Vignolo in EUROPEAN COATINGS JOURNAL (ECJ), N° 12 (12/2012)  

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Pigments historiques sous rayonnement laser (IR, VIS et UV) / Marie Chappé in L'ACTUALITE CHIMIQUE, N° 7 (07/2002)  

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Synthesis and spectroscopic characterisation of non-aggregated novel axially 4-{2-[3-(diethylamino)phenoxy]ethoxy} and crown ether substituted silicon phthalocyanines / Zekeriya Biyiklioglu in COLORATION TECHNOLOGY, Vol. 128, N° 6 (2012)  

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