Caprolactories : High performance polyols for premium coatings and tough finishes / Pär Jörgensen in PAINTINDIA, Vol. LXIV, N° 11 (11/2014)  

[article]  inPAINTINDIA > Vol. LXIV, N° 11 (11/2014) . - p. 66-71 Titre : Caprolactories : High performance polyols for premium coatings and tough finishes Type de document : texte imprimé Auteurs : Pär Jörgensen, Auteur ; S. Ramakrishnan, Auteur ; Bhushan Saindane, Auteur ; Aurore Jomier, Auteur Année de publication : 2014 Article en page(s) : p. 66-71 Langues : Anglais (eng) Catégories : e-caprolactone Polyuréthanes Revêtements -- Finition:Peinture -- Finition Revêtements bi-composant:Peinture bi-composant Vernis Index. décimale : 667.9 Revêtements et enduits Résumé : Being versatile, polyurethane coatings offer many technical advantages over competing coating systems. Two component PU coating is seeing widespread use in application areas like the automotive sector, wind turbines, aircraft, transportation etc. A major disadvantage of the classic, solvent-based polyurethane coatings is the volatile organic compounds (VOCs) present at application viscosity. New regulations force formulators to keep the VOC content below 350 g/L and recent developments provide solutions to this problem. Perstorp is the leading global producer of Capa caprolactones, with a wealth of experience and expertise to help customers develop unique coating formulations. Capa polyols are found in premium coating formulations for use in indoor and outdoor applications. From wind turbines to coating metal and plastic parts, one always gets a long lasting quality and technical performance. This paper presents the use and advantages of Capa polyols in two component formulations. The addition of Capa polyol as resin modifiers into a high solid formulation, helps reduce VOC even further for improved sustainable solutions. It also has a significantly positive impact on abrasion resistance, improved flexibility and outdoor durability in 2K PU coating systems. This makes Capa the perfect solution for heat-sensitive substrates like plastic and wood and objects too big to be cured in oven. Note de contenu : - PU CHEMISTRY : Types of PU formulations - APPLICATION OF 2K PU - CAPROLACTONE TECHNOLOGY : Synthesis of Caprolactone Monomer and polyols added values in coating formulations - Capa polyols for coatings CapaPolyols for 2KPU coatings - Testing procedures of the coatings En ligne : https://drive.google.com/file/d/1_h_gEkczqPzr1xzZBEM7mAcgJMwRo1AY/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22516 [article]

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Oxymer M112 - Use in anionic polyurethane dispersions / Malin Rex in PAINTINDIA, Vol. LXIII, N° 5 (05/2013)

[article]  inPAINTINDIA > Vol. LXIII, N° 5 (05/2013) . - p. 150-156 Titre : Oxymer M112 - Use in anionic polyurethane dispersions Type de document : texte imprimé Auteurs : Malin Rex, Auteur ; S. Ramakrishnan, Auteur ; Bhushan Saindane, Auteur Année de publication : 2013 Article en page(s) : p. 150-156 Langues : Anglais (eng) Catégories : Anions Diols Dureté (matériaux) Polycarbonates Polymères aliphatiques Polymères en émulsion Polyuréthanes Résistance à l'humidité Résistance chimique Séchage Index. décimale : 668.9 Polymères Résumé : This technical paper presents information concerning a versatile aliphatic polycarbonate diol that has been developed by Perstorp and evaluated in aqueous anionic polyurethane dispersions. The comparison is made against polyurethane dispersions using the conventional macrodiols like polyether and polyester. This new class of polycarbonate macrodiols includes homopolymers derived from 2,2-dialkyl-l,3-propanediols.Films were cast from the aqueous polyurethane dispersions and evaluated according to different coating evaluation methods such as hardness, drying, solvent, acid and alkali resistance. This newly developed polycarbonate shows a high hardness, good drying property, excellent water, acid and base resistance. Note de contenu : - INTRODUCTION TO POLYURETHANE DISPERSIONS : Use of polycarbonate diols - GENERAL PROPERTIES OF OXYMER M112 (pOLYCARBONATE DIOL) - EXPERIMENTAL - PRE-POLYMÈRE FORMULATIONS AND SYNTHESIS PROCEDURE - STAGE 1 - STAGE 1 - SYNTHESIS PROCEDURE - STAGE 2 - CHAIN EXTENSION, NEUTRALIZATION AND DISPERSION : Neutralization and chain extension procedure - TESTING PROCEDURES : Hardness was - Solvent resistance - Shear stability Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18973 [article]

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Ymer N120 : use in nonionic polyurethane dispersions / Henrik Bernquist in PAINTINDIA, Vol. LXII, N° 9 (09/2012)

[article]  inPAINTINDIA > Vol. LXII, N° 9 (09/2012) . - p. 73-76 Titre : Ymer N120 : use in nonionic polyurethane dispersions Type de document : texte imprimé Auteurs : Henrik Bernquist, Auteur ; S. Ramakrishnan, Auteur ; Bhushan Saindane, Auteur Année de publication : 2012 Article en page(s) : p. 73-76 Langues : Anglais (eng) Catégories : Agents dispersants (chimie) Diols Dispersions et suspensions -- Stabilité Polymères en émulsion Polyuréthanes Propionique diméthylol, Acide Revêtements Index. décimale : 667.9 Revêtements et enduits Résumé : This article presents information concerning a nonionic diol that can be incorporated laterally in polyurethane backbones in order to achieve internal stabilization of polyurethane dispersions. The benefits of using the nonionic diol, in terms of tolerance of the resulting dispersion against electrolytes and shear forces, have been investigated. In addition, the tolerance of the resulting polyurethane coating against polar solvents has also been studied. The nonionic diol was observed to be an efficient dispersant, functioning well together with anionic stabilization in the form of Bis-MPA (dimethylol propionic acid). The lateral positioning of the nonionic segments was observed to greatly improve the dispersion stability and reduce the sensitivity of the corresponding polyurethane coating to solvents. A comparative study between nonionic & anionic PUD clearly shows that nonionic stabilization provides more electrolytic & shear stability. Note de contenu : - PREPARATION OF POLYURETHANE DISPERSION - PRE-POLYMER FORMULATIONS AND SYNTHESIS PROCEDURE - STAGE 1 : Synthesis procedure - Stage 2 : Chain extension, neutralization and dispersion - Stage : Neutralization and chain extension procedure - TESTING PROCEDURES : Preparation of the polyurethane coating - Stability of the polyurethane dispersion - Electrolyte stability : testing procedure - Shear stability : testing procedure - Results : Stability of polyurethane dispersion - Properties of the polyurethane coating Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16263 [article]

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