Meeting IKEA R1 requirements for coatings / Dirk Mestach in EUROPEAN COATINGS JOURNAL (ECJ), N° 12 (12/2022)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 12 (12/2022) . - p. 38-42 Titre : Meeting IKEA R1 requirements for coatings : Water-borne one-component self-crosslinking polymer dispersions Type de document : texte imprimé Auteurs : Dirk Mestach, Auteur ; Marcel Meeuwisse, Auteur ; Nicole Verhagen, Auteur ; Ankie van Gorkum, Auteur Année de publication : 2022 Article en page(s) : p. 38-42 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Auto-réticulation Blanc (couleur) Pâte pigmentaire Polyacryliques Revêtement monocomposant Revêtements en phase aqueuse Vernis en phase aqueuse Index. décimale : 667.9 Revêtements et enduits Résumé : Concern about sustainability and carbon footprints is increas¬ing demand for one-component coating systems compliant with DIN 68861 and the IKEA 105 MAT 0066. A coating composition has been developed, combining crosslinking chemistries and particle morphology. Increased crosslink density results in IKEA-compliant pigmented matt coatings. Identical performance properties can be achieved using raw materials, resulting in concentrations of bio-based carbon above 30 %. Note de contenu : - Prior research - Crosslinking mechanisms - Covalent and ionic crosslinking - Experimental - Test methods - Best compromise - Table 1 : different experimental acrylic dispersions - Table 2 : Pigment paste and matt white topcoat composition - Table 3 : Comparison between second generation R2 dispersions with completely fossil or partiall renewable monomers En ligne : https://drive.google.com/file/d/16CIXJzVEX8NDYhjgpKriIXpPqBwxDFnV/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38530 [article]

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A novel non-isocyanate and formaldehyde-free technology for solvent- and waterborne systems / Andreas Hermes in SURFACE COATINGS INTERNATIONAL, Vol. 104.6 (11-12/2021)  

[article]  inSURFACE COATINGS INTERNATIONAL > Vol. 104.6 (11-12/2021) . - p. 474-477 Titre : A novel non-isocyanate and formaldehyde-free technology for solvent- and waterborne systems Type de document : texte imprimé Auteurs : Andreas Hermes, Auteur ; Marcel Meeuwisse, Auteur Année de publication : 2021 Article en page(s) : p. 474-477 Langues : Anglais (eng) Catégories : Formaldéhyde -- Suppression ou remplacement Isocyanates -- Suppression ou remplacement Réticulants -- Produits de remplacement Revêtement en phase solvant Revêtements en phase aqueuse Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : The challenges of modern industry are increasingly demanding for paint formulators. Economically, it is necessary to reduce the cost of raw materials to produce excellent quality at lower prices. Technologically, it is necessary to achieve ever increasing performance on the coating system with faster drying times and shorter process cycles. From an environmental point of view, solvent emissions and waste water pollution must be reduced. In terms of health and safety, it is necessary to protect production workers from hazardous substances and to minimise ambient air pollution. allnex's R&D is dedicated to developing sustainable solutions to help formulators meet these challenges. The wood coatings industry in Europe is divided into two different technology regions and both of them have major challenges to solve. Southern Europe is dominated by 2K polyurethane isocyanate technology, whereas Northern Europe focuses on 2K acid-curing systems. Regarding occupational safety and environmental protection, the emphasis is in both cases on the crosslinking component. European regulations on the labelling of dangerous & hazardous substances have become more restrictive in recent years. European Directive No. 1272/2008 stipulates that formaldehyde at a concentration greater than 0.1% must be labelled as a carcinogen. This also applies to MDI-based isocyanates, which are used on a large scale in Southern Europe. This labelling leads to considerably higher costs, additional protective equipment for production workers, special storage of raw materials and finished products as well as special tare for the transport of the goods to the customer. Currently there are several new ways to obtain isocyanate- or formaldehyde-free coatings. However, many of these new systems still have limitations in terms of technical performance, choice of substrate or require a modification of the application line, which is associated with additional costs. The objective of this work is to demonstrate our improvements in the development of safer crosslinkers and coating systems that can be used on conventional equipment. The results presented in this paper are based on simple formulations whose properties have not yet been optimised in terms of flow, rheology, defoaming, deaeration, etc. This adjustment is the responsibility of the formulators and must be determined individually for each application. This work was carried out as part of the allnex ECOWISETM sustainable program, in which special emphasis is placed on 'green' technologies. Examples include the use of renewable raw materials, the reduction of wastewater pollution and the reduction of emissions of all kinds. Note de contenu : - Solution 1 for solventborne coatings based on acrylate/isocyanate - Solution 2 for solventborne coatings based on alkyd/urea-formaldehyde systems En ligne : https://drive.google.com/file/d/17ZfScbC7b-viuFRspRikz2MLj0Zxw0CJ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36647 [article]

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