Clearing the way / Anna Kotnis in EUROPEAN COATINGS JOURNAL (ECJ), N° 01/2009 (01/2009)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 01/2009 (01/2009) . - p. 36-39 Titre : Clearing the way : Transparent silane system provides self-cleaning effect on metal Type de document : texte imprimé Auteurs : Anna Kotnis, Auteur ; Angela Classen, Auteur ; Kumar Ghosh Swapan, Auteur ; Bernd Rohe, Auteur ; Thomas Sowade, Auteur Année de publication : 2009 Article en page(s) : p. 36-39 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosion Dioxyde de titane Métaux -- Revêtements:Métaux -- Peinture Photocatalyse Revêtement auto-nettoyant:Peinture auto-nettoyante Silanes Index. décimale : 667.6 Peintures Résumé : A silane system modified with ultrafine TiO2 was developed for use as a transparent photocatalytic paint for steel construction. When a pretreatment is used, good corrosion resistance can be otbained. The applied coating show high transparency and good photoactivity at a coating thickness of 2µm. En ligne : https://drive.google.com/file/d/1OK1fbIfHgSaelyN4YdYZgJA2m2jOVvP_/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3336 [article]

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Future labelling-free anticorrosive pigments for ecological paint recipes / Thomas Sowade in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 207, N° 4635 (10/2017)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 207, N° 4635 (10/2017) . - p. 2-5 Titre : Future labelling-free anticorrosive pigments for ecological paint recipes Type de document : texte imprimé Auteurs : Thomas Sowade, Auteur Année de publication : 2017 Article en page(s) : p. 2-5 Note générale : Suppl. "Going green" - Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosifs Phosphate de zinc Pigments métalliques Produits chimiques -- Suppression ou remplacement Index. décimale : 667.6 Peintures Résumé : Looking into the history of anticorrosive pigments (ACO-pigments), the driving innovation factors were always performance and legislation in combination with costs. The toxic behaviour of red lead or chromates already opened the door to non-toxic alternatives 30 years ago. The stepwise ongoing stricter handling of for example the Cr6 ended up in an almost complete ban in Europe for the benefit of all consumers : Chrome-based pigments are SVHCs (substances of very high concern) in the European Union and currently the sunset date for eg Strontiumchromate and Zinctetraoxychromate is set for January 2019 with the possibility to apply for an authorisation until July 2017. These pigments show an excellent cost/performance ratio. Nevertheless, due to their toxicity, for more than 30 years, alternatives like zinc phosphates have made inroads. Standard products with universel applicability significantly reduced the consumption of chromates, however they did net always reach the required performance due to a different working mechanism. All phosphate pigments have in common the fact that they build an anodic passivation via precipitation of phosphate complex layers in combination with metal hydroxide barriers (see Figure 1), white Crelons additionally act cathodically. Therefore, standard zinc phosphate has been improved by two major steps : The first step was the modification of standard zinc phosphate changing, for example, pH, solubility, adding synergistic values etc. Second was the introduction of polyphosphates for higher sophisticated applications, such as coil coatings, aircraft primers etc, which can also be supported by the use of silica-based ion-exchange pigments. All improved products are highly linked to specific binder systems, therefore more universel zinc-containing pigments have been developed as 'wide-spectrum-anticorrosives', combining the different improvement factors into a single pigment or even developing different modifications. Note de contenu : - How to use zinc-containing aco-pigments to achieve a labelling-free paint ? - Zinc-free aco-pigments for long-term labelling free paint formulations - FIGURES : 1. Working principle of phosphate-based ACO-pigments - 2. Performance of a zinc aluminium polyphosphate - 3-4. Performance of a "low-level-zinc" pigment - 5. Zinc-free pigment vs organically and crystal structure optimised calcium phosphate - 6. Performance of calcium aluminium polyphosphate silicate - 7. Performance of strontium aluminium polyphosphate - 8. Performance of calcium magnesium phosphate - 9. Performance of silica-ion exchange pigment En ligne : https://drive.google.com/file/d/1GACmzXaRwYC9xZ_Y4RtLWi-6w_BPKjZz/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29304 [article]

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Lead chromate replacement / Jürgen Ott in EUROPEAN COATINGS JOURNAL (ECJ), N° 3 (03/2015)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 3 (03/2015) . - p. 94-97 Titre : Lead chromate replacement : Old hat, but still a long process ? Type de document : texte imprimé Auteurs : Jürgen Ott, Auteur ; Thomas Sowade, Auteur Année de publication : 2015 Article en page(s) : p. 94-97 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chromate de plomb -- Produits de remplacement Revêtements -- Coloration:Peinture -- Coloration Index. décimale : 667.2 Colorants et pigments Résumé : Global use of lead chromates has significantly declined in recent years due to the toxicity of the pigments. In the past decade alone, the quantity used has declined by more than half, down from 90 000 t. in 2000. However, due to the excellent price/performance of lead chromates and the partial use of the pigments in colour mixing systems, complete replacement has failed to occur so far. The upcoming approval requirement for REACH annex XIV in May of 2015 is increasing the focus on the issue of alternative formulation concepts again. Note de contenu : - Chroma and hue angle of individual pigments - Hiding power and colour strength of individual pigments - Inorganic and organic combined - Customised solutions - Light fastness and weather stability En ligne : https://drive.google.com/file/d/1XZsEzyTxFI0tMDMl_vuv9udZCL2xu4wd/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23476 [article]

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Lead chromate replacement - old hat, but still a long process ? / Jürgen Ott in SURFACE COATINGS INTERNATIONAL, Vol. 98.4 (09/2015)  

[article]  inSURFACE COATINGS INTERNATIONAL > Vol. 98.4 (09/2015) . - p. 179-182 Titre : Lead chromate replacement - old hat, but still a long process ? Type de document : texte imprimé Auteurs : Jürgen Ott, Auteur ; Thomas Sowade, Auteur Année de publication : 2015 Article en page(s) : p. 179-182 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chimie industrielle -- Législation -- Pays de l'Union européenne Chromate de plomb -- Produits de remplacement Mélange Pigments inorganiques Pigments organiques Index. décimale : 667.9 Revêtements et enduits Résumé : Global use of lead chromates has significantly declined in recent years due to the toxicity of the pigments. In the past decade alone, the quantity used has declined by more than half, down from 90.000t in 2000. However, due to the excellent price/performance of the lead chromates and the partial use of the pigments in colour mixing systems, complete replacement has not yet happened. The recent approval requirement for REACH annex XIV in May 2015 has now increased the focus on the issue of alternative formulation concepts once more. Note de contenu : - Chroma and hue angle of individual pigments - Hiding power and colour strength of individual pigments - Inorganic and organic combined - Customised solutions - Lightfastness and weather stability En ligne : https://drive.google.com/file/d/1ynKxuADhMT5GLm-tq_HfhS0r5Hl2K3ev/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24550 [article]

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Lead chromate replacement - old hat, but still a long process ? / Jürgen Ott in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 205, N° 4610 (07/2015)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 205, N° 4610 (07/2015) . - p. 22-25 Titre : Lead chromate replacement - old hat, but still a long process ? Type de document : texte imprimé Auteurs : Jürgen Ott, Auteur ; Thomas Sowade, Auteur Année de publication : 2015 Article en page(s) : p. 22-25 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chimie industrielle -- Législation -- Pays de l'Union européenne Chromate de plomb -- Produits de remplacement Mélange Pigments inorganiques Pigments organiques Index. décimale : 667.9 Revêtements et enduits Résumé : Global use of lead chromates has significantly declined in recent years due to the toxicity of the pigments. In the past decade alone, the quantity used has declined by more than half, down from 90.000t in 2000. However, due to the excellent price/performance of the lead chromates and the partial use of the pigments in colour mixing systems, complete replacement has not yet happened. The recent approval requirement for REACH annex XIV in May 2015 has now increased the focus on the issue of alternative formulation concepts once more. Note de contenu : - Chroma and hue angle of individual pigments - Hiding power and colour strength of individual pigments - Inorganic and organic combined - Customised solutions - Lightfastness and weather stability En ligne : https://drive.google.com/file/d/1SCMWSk6h4lUoPqGxtEVENrtz3tHfMcdv/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24562 [article]

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