Versatile self-crosslinking polyurethane dispersion for low VOC coatings across multiple markets / Aditi Chavannavar in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4645 (10/2018)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 208, N° 4645 (10/2018) . - p. 11-12 Titre : Versatile self-crosslinking polyurethane dispersion for low VOC coatings across multiple markets Type de document : texte imprimé Auteurs : Aditi Chavannavar, Auteur ; Jacob P. Brutman, Auteur ; Don M. Barber ; P. Kangas Année de publication : 2018 Article en page(s) : p. 11-12 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adhésion Auto-réticulation Bois -- Revêtements protecteurs Brillance (optique) Essais de résilience Formulation (Génie chimique) Polyuréthanes Résistance au chocs Résistance aux taches Résistance chimique Revêtements -- Détérioration Revêtements -- Propriétés mécaniques Revêtements en phase aqueuse Vernis en phase aqueuse Index. décimale : 667.9 Revêtements et enduits Résumé : Herein, we report the development of a low minimum film formation temperature (MFFT), self-crosslinking aliphatic polyurethane dispersion (PUD). It is capable of being incorporated into low volatile organic compound (VOC) formulations and combines good appearance, film formation and toughness with excellent hardness and abrasion resistance. In this study, we have evaluated the self-crosslinking PUD in various applications ; from high performance wood coatings to protective coatings for rigid plastics and as a top coat for metal. In this paper, we demonstrate the application properties of this resin, such as its hardness development, resistance to chemicals, adhesion, weathering etc. We also validate the versatility of this resin in several applications and assess the film formation and mechanical properties of the PUD. Lastly, we discuss how these influence the performance of the coatings. Note de contenu : - A) FURNITURE AND FLOORING MARKET (WOOD COATINGS) : Formulations and application - APPLICATION TESTING ON WOOD : Gloss - Hardness - Chemical and stain resistance - Chemical and stain resistance - Flexibility and impact resistance - Adhesion - Taber abrasion - Durability - Conclusion for wood coating applications - Table 1. Properties of resins tested as wood coatings - Table 2a. Clear formulation for PUD prototype - Table 2b. Clear formulation for PUD A - Table 2c. Clear formulation for PUD B - Table 2d. Clear formulation for acrylic resin - Table 2e. Clear formulation for 2K PU - Table 2f. Clear formulation for PUD prototype/ acrylic 1:2 blend - Table 2g. Clear formulation for PUD prototype/acrylic 2:1 blend - Table 3. Chemical resistance of matte clear formulations on maple wood - Table 4. Stain resistance of formulations on mapple wood - Table 5. Impact resistance of coatings - Table 6. Impact resistance of coatings - Table 7. Adhesion of coatings on wood - Table 8. VOC levels of formulations tested - Fig. 1. Gloss of matte clear formulations on Leneta 2A cards - Fig. 2. Konig penduum swing hardness test of matte clear formulations on aluminium - Fig. 3. Taber abrasion of coatings - Fig. 4. Weathering the coatings En ligne : https://drive.google.com/file/d/1GwpsqTdTqkWyuz-Cq44_iCm99lrdI-D6/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31253 [article]

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Versatile self-crosslinking polyurethane dispersion for low VOC coatings across multiple markets / Aditi Chavannavar in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4646 (11/2018)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 208, N° 4646 (11/2018) . - p. 42-45 Titre : Versatile self-crosslinking polyurethane dispersion for low VOC coatings across multiple markets Type de document : texte imprimé Auteurs : Aditi Chavannavar, Auteur ; Jacob P. Brutman, Auteur ; Don M. Barber ; P. Kangas Année de publication : 2018 Article en page(s) : p. 42-45 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adhésion Auto-réticulation Brillance (optique) Dureté (matériaux) Essai de dureté Essais d'adhésion Formulation (Génie chimique) Matières plastiques -- Revêtement Polymères en émulsion Polyuréthanes Résistance chimique Revêtements en phase aqueuse Vernis en phase aqueuse Index. décimale : 667.9 Revêtements et enduits Résumé : Although solvent-based coatings are prominent in industrial applications, environmental regulations are pushing coating companies and formulators towards water-based systems". Industrial coatings include applications like household appliances, construction machinery, garage doors, fitness equipment, kitchen flttings, industrial joinery, etc. These are mostly applied on metal and the main function is to protect the substrate and make it aesthetically appealing. Other properties that industrial coatings need to have are adhesion to metal, block resistance and high gloss. In this area, we have benchmarked PUD prototype with PUD A and PUD B in white pigmented formulations. Additionally, we have compared PUD prototype to PUD C, which is a commercially available self-crosslinking PUD marketed for metal and plastic coatings. Table 9 summarises the properties of the resins in this application Note de contenu : - INDUSTRIAL COATING APPLICATIONS : Formulations and application - Application testing on CRS gloss and hardness - Adhesion - Chemical resistance - Block resistance - CONCLUSION FOR INDUSTRIAL COATINGS - PLASTIC APPLICATIONS : Formulation and application - APPLICATION TESTING ON PC/ABS PLASTIC : Gloss - hardness - Chemical resistance - Resistance to sunscreen and insect repellent - Resistance to hand sanitiser - Adhesion to plastic - CONCLUSION OF PLASTIC COATING STUDY - Fig. 5 : Gloss and hardness of pigmented formulations - Fig. 6 : Gloss for plastic coatings - Fig. 7 : Konig pendulum hardness of the coatings for plastic - Fig. 8 : Resistance to sunscreen and insect repellent - Table 9 : Properties of resins in industrial coating study - Table 10a : White pigmented formulation for PUD prototype - Table 10b : White pigmented formulation for PUD A - Table 10c : White pigmented formulation for PUDB - Table 10d : White pigmented formulationfor PUD C - Table 11 : Adhesion on CRS - Table 12 : Cheimcal resistance of coatings - Table 13 : One hour recovery after chemical resistance testing - Table 14 : Block resistance of the coatings - Table 15a : Soft touch, clear, matte formulation for PUD prototype - Table 15b : Clear, matte formulation for PUD C - Table 16 : Chemical resistance on plastic - Table 17 : One hour recovery after chemical resistance testing - Table 18 : Hand sanitiser resistance - Table 19 : Adhesion to PC/ABS En ligne : https://drive.google.com/file/d/1z3xM0GySly3M4eOpKATRBJdvl7c2S7Zg/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31577 [article]

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