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Double jeopardy / Stephen Monaghan in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 193, N° 4461 (02/2003)

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 193, N° 4461 (02/2003) . - p. 15-17 Titre : Double jeopardy Type de document : texte imprimé Auteurs : Stephen Monaghan, Auteur Année de publication : 2003 Article en page(s) : p. 15-17 Langues : Anglais (eng) Catégories : Brillance (optique) Polyuréthanes Résistance chimique Revêtements en phase aqueuse:Peinture en phase aqueuse Vernis en phase aqueuse Index. décimale : 667.9 Revêtements et enduits Résumé : When you find the right mix, coatings with high chemical resistance are possible. The high performance characteristics of polyurethanes, together with their adaptability and versatility, have enabled them to be used in a variety of coating applications. These applications can range from textile coatings to roof coatings, from high gloss automotive paints and lacquers to print-receptive coatings for films. Polyurethane systems can be one- or two-component, solvent free, solventborne or waterborrne. With increased legislation and awareness of environmental issues, solvent-based systems are becoming less desirable, and water-based technology has come to the fore. Waterbased polyurethane dispersions (PUD's) are now widely used in such areas as plastic coatings in OEM interiors, print receptive coatings, lacquers for wood and protective topcoats. PUD's can offer a non-hazardous, tough protective coating but do not always match the performance of solvent-based two-component systems. Note de contenu : - It takes two - Functional Dispersions - Easy-clean applications - Test and evaluation - Research and development - FIGURES : 1. PUD with pendant hydroxyl groups - 2. Functional PUD acrylic system - 3. Semi interpenetrating network of coated film - 4. Chemical resistance of clear lacquer coatings - 5. Hardness development for clear lacquer system - 6. 60° gloss of white paint systems Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27944 [article]

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Keeping stable / Ewald Kensbock in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 193, N° 4461 (02/2003)

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 193, N° 4461 (02/2003) . - p. 30-32 Titre : Keeping stable Type de document : texte imprimé Auteurs : Ewald Kensbock, Auteur Année de publication : 2003 Article en page(s) : p. 30-32 Langues : Anglais (eng) Catégories : Formulation (Génie chimique) Inhibiteurs (chimie) Polyaddition Revêtements -- Séchage sous rayonnement ultraviolet Index. décimale : 667.9 Revêtements et enduits Résumé : Although essential for successful UV curing, free radicals can be problematic if not controlled. Free radicals are essential for successful UV-curing, but they can also give UV-formulators some serious problems if they are not controlled. I will consider the present knowledge and outline the major precautions the UV-formulator has to consider in the endeavour to continuously improve the performance of UV-systems, especially to improve the in-can stability. Note de contenu : - Inhibitors - Factors resulting in gelation - In-can stabalisers - the ideal ? - UV-ink production - Stability testing - Photoinitiator/stabaliser cycle - Future possibilities - TABLES : 1. The most popular inhibitors - 2. A typical mill base formulation Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27963 [article]

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