Shining new light opaque polymer / M. Eckenrode in COATINGS TECH, Vol. 9, N° 8 (08/2012)  

[article]  inCOATINGS TECH > Vol. 9, N° 8 (08/2012) . - p. 40-45 Titre : Shining new light opaque polymer Type de document : texte imprimé Auteurs : M. Eckenrode, Auteur ; David M. Fasano, Auteur Année de publication : 2012 Article en page(s) : p. 40-45 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Polyacétate de vinyle Polyalkydes Polymères opaques Revêtement en phase solvant:Peinture en phase solvant Revêtements Index. décimale : 667.9 Revêtements et enduits Résumé : An opaque polymer was developed in the 1970s to provide paint formulators with a light scattering pigment to supplement the use of titanium dioxide (TiO2). The hollow-sphere structure of opaque polymer provides a controlled and consistent level of air void hiding in paint through the refractive index differential between the internal air void and the outer polymer shell. The encapsulated air voids provide hiding without the loss of resistance properties associated with other raw materials which provide hiding through increased film porosity. Extensive research and proactical experience demonstrate that opaque polymer may be used to economically replace 10 to 20% of TiO2 in white and paster architectural paints. Recent and continued increases in TiO2 price have raised the formulated cost of all paints. As a result, there is growing interest in using opaque polymer at higher levels of TiO2 replacement in white and pastel acrylics. This interest extends to using opaque polymer in mid-tone tint bases, primers, and polyvinyl acetate (PVC) paints. reformulation and performance studies coupled with a new proprietary reformulation tool demonstrage the expanded utility of opaque polymer in these formulation spaces. in addition, technology advances have led to the development of a next-generation opaque polymer that can beused in waterborne as well as solventborne alkyd architectural paints. Note de contenu : - How opaque polymer scatters light - Performance at higher TiO2 replacement in a flat formulation - Exterior durability at higher TiO2 replacement - Economy flats, primers, mid-tones - PVA formulation space - Utility in solventborne alkyds - Reformulating tool En ligne : https://drive.google.com/file/d/1M46yBBMJv1669DH8k5cr8iRRQMyuOKq0/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15754 [article]

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