Fluorinated additives for stain-resistant matt latex paints / J. Branquinho in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 4 (12/2009)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 4 (12/2009) . - p. 483-491 Titre : Fluorinated additives for stain-resistant matt latex paints Type de document : texte imprimé Auteurs : J. Branquinho, Auteur ; J. A. C. Alves, Auteur ; Susana Carvalho, Auteur ; Jorge Moniz, Auteur ; Fernanda Oliveira, Auteur ; M. H. Gil, Auteur Année de publication : 2009 Article en page(s) : p. 483-491 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Fluoropolymères Latex Polyacrylate de butyle Résistance aux taches Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs Index. décimale : 667.9 Revêtements et enduits Résumé : Latex paints are often preferred over solvent-based paints due to their good gloss and color retention, ease of handling, and lower volatile organic contents. However, matt latex paints tend to show poor stain resistance since they develop highly porous and rough surfaces. In recent years, matt latex paints have been improved in their stain resistance with resulting better cleanability, by adding hydrocarbon acrylic polymers and fluorine-containing compounds. In this work, we prepared fluorinated acrylic emulsions of the copolymer of butyl acrylate (BA) and perfluorobutylethylene (PFBE), which were introduced in latex paint compositions. The properties of the modified paints were evaluated by performing stain resistance tests with several domestic products. It was observed that they had good stain release properties, thus conferring good properties to the final painting system. They contain the self-cleaning behavior typical of fluorinated coatings, which have been proven by the decrease of their surface energies. Since the cleaning procedures of a matt paint film can also impart some gloss increase, the wet and dry burnishes were also evaluated. The results have shown improvements in stain resistance and cleanability of the modified matt latex paints with the maintenance of their stability and the coatings gloss as required. DOI : 10.1007/s11998-009-9170-8 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9170-8.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7691 [article]

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High renewable content binders for ecological waterborne coatings / Susana Carvalho in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4618 (03/2016)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 206, N° 4618 (03/2016) . - p. 22-24 Titre : High renewable content binders for ecological waterborne coatings Type de document : texte imprimé Auteurs : Susana Carvalho, Auteur ; Jorge Moniz, Auteur ; Ana Mourão, Auteur ; Catarina Ralheta, Auteur Année de publication : 2016 Article en page(s) : p. 22-24 Langues : Anglais (eng) Catégories : Chlorure de polyvinyle Formulation (Génie chimique) Latex Liants Polyacryliques Ressources renouvelables Revêtements décoratifs:Peinture décorative Revêtements en bâtiment:Peinture en bâtiment Index. décimale : 667.9 Revêtements et enduits Résumé : lnnovative renewable resins with 100% solids have been developed, containing 80% and 100% bio-based materials respectively and no emulsifiers. Both resins have been successfully used as sole binders in decorative paints. A 55% PVC white paint formulation was used to assess the resins' behaviour in moderately high binder content coatings. Paint properties were generally in agreement with standard Vam/VeoVa and acrylic latex binders for interior applications, white for exterior applications further improvements are still needed. A specific interior matte paint formulation was developed to meet the European Ecolabel criteria. In addition to a high quality acrylic latex, both renewable resins were able to produce paints whose properties are in compliance with Ecolabel parameters. The presented resins are, thus, excellent choices to increase the bio-based content of a decorative paint. Further characterisation is being carried out and different formulations are being tested in order to explore the possibilities of these novel renewable resins. Note de contenu : - Renewable resin as co-binder - Renewable resins as sole binders in a 55% PVC white paint - Renewable resins as sole binders in ecolabel matte paint En ligne : https://drive.google.com/file/d/11hAzcaCuRFRloNEkOUFZ9DsglUnED0aI/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25802 [article]

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Incorporation of an acrylic fatty acid derivative as comonomer for oxidative cure in acrylic latex / Joana V. Barbosa in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 5 (09/2014)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 11, N° 5 (09/2014) . - p. 765-773 Titre : Incorporation of an acrylic fatty acid derivative as comonomer for oxidative cure in acrylic latex Type de document : texte imprimé Auteurs : Joana V. Barbosa, Auteur ; Jorge Moniz, Auteur ; Adélio Mendes, Auteur ; Fernào D. Magalhàes, Auteur ; Margarida M. S. M. Bastos, Auteur Année de publication : 2014 Article en page(s) : p. 765-773 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acides gras Coalescence (Sciences physiques) Latex Nanoparticules Polyacryliques Polymérisation en émulsion Polymérisation par oxydation Revêtements en phase aqueuse:Peinture en phase aqueuse Silice La silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux. La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...). Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale. Traîtements de surface Index. décimale : 667.9 Revêtements et enduits Résumé : An acrylic fatty acid derivative (AcFAD) was evaluated as comonomer for promotion of oxidative cure in waterborne latexes. AcFAD was polymerized by solvent homopolymerization and copolymerization and by emulsion copolymerization, and the final products characterized. In the two polymerization processes, NMR analyses confirmed that the reaction occurred involving both the terminal acrylic double bond and the conjugated double bonds of the aliphatic chain. Compared with a reference acrylic latex, the results obtained after AcFAD incorporation showed a time-dependent increase in gel content and in solvent resistance of dry films. These were ascribed to oxidative cure and consequent self-crosslinking of the acrylic polymer, involving the conjugated double bonds in AcFAD side chains. Oxidative cure was also confirmed by FTIR analyses. In addition, reduction in minimum film-forming temperature evidenced that AcFAD has an internal plasticization effect during film formation. Incorporation of this comonomer in acrylic paint binder formulations constitutes a promising alternative to the use of volatile coalescing agents. Note de contenu : - EXPERIMENTAL : 1. Materials - Characterization methods : 1. Solution polymerization of AcFAD - 2. Emulsion copolymerization of AcFAD - RESULTS AND DISCUSSION : 1. Solvent polymerization - 2. Emulsion polymerization DOI : 10.1007/s11998-014-9582-y En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9582-y.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22059 [article]

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