{"id":5380,"date":"2018-09-13T09:00:11","date_gmt":"2018-09-13T07:00:11","guid":{"rendered":"https:\/\/www.omarcoatings.com\/omarpur-un-blanco-que-no-amarillea\/"},"modified":"2018-09-21T12:50:10","modified_gmt":"2018-09-21T10:50:10","slug":"omarpur-blanc-un-blanc-qui-ne-jaunit-pas","status":"publish","type":"post","link":"https:\/\/www.omarcoatings.com\/fr\/omarpur-blanc-un-blanc-qui-ne-jaunit-pas\/","title":{"rendered":"Omarpur blanc, un blanc qui ne jaunit pas"},"content":{"rendered":"<p>Depuis d\u00e9j\u00e0 quelques ann\u00e9es, nous vivons une recrudescence de la menuiserie d\u2019int\u00e9rieur et du mobilier laqu\u00e9s, au d\u00e9triment du bois et des placages bois. Parmi toutes les couleurs possibles, le blanc, ou ses variantes, est certainement celui qui pr\u00e9domine de mani\u00e8re assourdissante sur le reste des teintes.<\/p>\n<p>Cette <strong>tendance vers des teintes si lumineuses nous oblige \u00e0 traiter les finitions avec des produits pr\u00e9sentant une tr\u00e8s bonne stabilit\u00e9 \u00e0 la lumi\u00e8re<\/strong>. Pour cela,<strong> les laques acryliques r\u00e9ticul\u00e9es avec du poly-isocyanate aliphatique sont ce qu\u2019il y a de mieux<\/strong>. Ce type de finitions a \u00e9t\u00e9 utilis\u00e9 \u00e0 l\u2019unanimit\u00e9 pendant des d\u00e9cennies, quand l\u2019obtention d\u2019une stabilisation totale de la couleur a \u00e9t\u00e9 n\u00e9cessaire. Mais, soit \u00e0 cause du prix, soit \u00e0 cause de la facilit\u00e9 d\u2019application, <strong>la demande actuelle se tourne vers des laques polyur\u00e9thane, les acryliques restant r\u00e9serv\u00e9es aux travaux d\u2019une certaine envergure ou de qualit\u00e9 haut de gamme<\/strong>.<\/p>\n<p><strong>Les laques polyur\u00e9thane n\u2019offrent pas la m\u00eame stabilit\u00e9 \u00e0 la lumi\u00e8re que leurs homologues acryliques<\/strong>\u00a0; elles pr\u00e9sentent des probl\u00e8mes de jaunissement lorsqu\u2019elles sont expos\u00e9es un certain temps \u00e0 la lumi\u00e8re int\u00e9rieure ou \u00e0 celle du soleil, quand il traverse les vitres. La cause de cette d\u00e9gradation r\u00e9side, par d\u00e9finition, dans les propres composants du polyur\u00e9thane, la r\u00e9sine alkyde et un r\u00e9ticulant ou durcisseur \u00e0 base de poly-isocyanate mixte aliphatique-aromatique.<\/p>\n<p>Conscient de la probl\u00e9matique technique et du potentiel de l\u2019utilisation du polyur\u00e9thane pour le laquage d\u2019objets en bois, <strong>Omar Coatings a d\u00e9velopp\u00e9 un nouveau concept de produit bas\u00e9 sur une technologie propre, gr\u00e2ce \u00e0 la collaboration des d\u00e9partements R&amp;D de la division R\u00e9sines et de la division Recouvrements.<\/strong> Comme fruit de cette investigation, <strong>nous disposons d\u00e9sormais d\u2019une r\u00e9sine alkyde<\/strong> qui pr\u00e9sente une teneur en huiles (acides gras) extr\u00eamement faible, ce qui, ajout\u00e9 \u00e0 un d\u00e9licat \u00e9quilibre entre isocyanate aliphatique et aromatique du durcisseur, <strong>nous a permis d\u2019obtenir une laque blanche \u00e0 tr\u00e8s faibles taux de jaunissement<\/strong>, tant et si bien que <strong>son comportement \u00e0 la lumi\u00e8re s\u2019apparente de tr\u00e8s pr\u00e8s \u00e0 celui d\u2019une finition acrylique<\/strong>. Apr\u00e8s un vieillissement acc\u00e9l\u00e9r\u00e9 pendant 400 heures en enceinte Xenotest, on a obtenu les r\u00e9sultats d\u2019\u2206b suivants\u00a0:<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"189\"><strong>Acrylique Blanc<\/strong><\/td>\n<td width=\"189\"><strong>Nouveau Polyur\u00e9thane<\/strong><\/td>\n<td width=\"189\"><strong>Polyur\u00e9thane standard<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"189\">0.07<\/td>\n<td width=\"189\">0.40<\/td>\n<td width=\"189\">1.65<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Le nom commercial du nouveau produit d\u00e9velopp\u00e9 est <strong>OMARPUR BLANCO<\/strong> et son r\u00e9ticulant, le durcisseur <strong>ENDURECEDOR BA-25<\/strong>.\u00a0D\u2019autres caract\u00e9ristiques comme <strong>la facilit\u00e9 d\u2019application, la perfection du pouvoir couvrant sur les chants et les ar\u00eates, l\u2019extensibilit\u00e9, le toucher soyeux et la duret\u00e9<\/strong>, ont \u00e9t\u00e9 soigneusement \u00e9tudi\u00e9s pour pouvoir proposer \u00e0 nos clients <strong>une finition de la meilleure qualit\u00e9<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Depuis d\u00e9j\u00e0 quelques ann\u00e9es, nous vivons une recrudescence de la menuiserie d\u2019int\u00e9rieur et du mobilier laqu\u00e9s, au d\u00e9triment du bois et des placages bois. Parmi toutes les couleurs possibles, le blanc, ou ses variantes, est certainement celui qui pr\u00e9domine de mani\u00e8re assourdissante sur le reste des teintes. Cette tendance vers des teintes si lumineuses nous [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-5380","post","type-post","status-publish","format-standard","hentry","category-vernis"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Omarpur blanc, un blanc qui ne jaunit pas - Omar Coatings<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.omarcoatings.com\/fr\/omarpur-blanc-un-blanc-qui-ne-jaunit-pas\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Omarpur blanc, un blanc qui ne jaunit pas - Omar Coatings\" \/>\n<meta property=\"og:description\" content=\"Depuis d\u00e9j\u00e0 quelques ann\u00e9es, nous vivons une recrudescence de la menuiserie d\u2019int\u00e9rieur et du mobilier laqu\u00e9s, au d\u00e9triment du bois et des placages bois. Parmi toutes les couleurs possibles, le blanc, ou ses variantes, est certainement celui qui pr\u00e9domine de mani\u00e8re assourdissante sur le reste des teintes. Cette tendance vers des teintes si lumineuses nous [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.omarcoatings.com\/fr\/omarpur-blanc-un-blanc-qui-ne-jaunit-pas\/\" \/>\n<meta property=\"og:site_name\" content=\"Omar Coatings\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Omar-Coatings-SA-836467759840586\/\" \/>\n<meta property=\"article:published_time\" content=\"2018-09-13T07:00:11+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2018-09-21T10:50:10+00:00\" \/>\n<meta name=\"author\" content=\"OMAR Coatings\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"OMAR Coatings\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Omarpur blanc, un blanc qui ne jaunit pas - Omar Coatings","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.omarcoatings.com\/fr\/omarpur-blanc-un-blanc-qui-ne-jaunit-pas\/","og_locale":"fr_FR","og_type":"article","og_title":"Omarpur blanc, un blanc qui ne jaunit pas - Omar Coatings","og_description":"Depuis d\u00e9j\u00e0 quelques ann\u00e9es, nous vivons une recrudescence de la menuiserie d\u2019int\u00e9rieur et du mobilier laqu\u00e9s, au d\u00e9triment du bois et des placages bois. Parmi toutes les couleurs possibles, le blanc, ou ses variantes, est certainement celui qui pr\u00e9domine de mani\u00e8re assourdissante sur le reste des teintes. Cette tendance vers des teintes si lumineuses nous [&hellip;]","og_url":"https:\/\/www.omarcoatings.com\/fr\/omarpur-blanc-un-blanc-qui-ne-jaunit-pas\/","og_site_name":"Omar Coatings","article_publisher":"https:\/\/www.facebook.com\/Omar-Coatings-SA-836467759840586\/","article_published_time":"2018-09-13T07:00:11+00:00","article_modified_time":"2018-09-21T10:50:10+00:00","author":"OMAR Coatings","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"OMAR Coatings","Dur\u00e9e de lecture estim\u00e9e":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.omarcoatings.com\/fr\/omarpur-blanc-un-blanc-qui-ne-jaunit-pas\/#article","isPartOf":{"@id":"https:\/\/www.omarcoatings.com\/fr\/omarpur-blanc-un-blanc-qui-ne-jaunit-pas\/"},"author":{"name":"OMAR Coatings","@id":"https:\/\/www.omarcoatings.com\/#\/schema\/person\/72d3b55ee770d39e1c127bbf859c9470"},"headline":"Omarpur blanc, un blanc qui ne jaunit pas","datePublished":"2018-09-13T07:00:11+00:00","dateModified":"2018-09-21T10:50:10+00:00","mainEntityOfPage":{"@id":"https:\/\/www.omarcoatings.com\/fr\/omarpur-blanc-un-blanc-qui-ne-jaunit-pas\/"},"wordCount":482,"publisher":{"@id":"https:\/\/www.omarcoatings.com\/#organization"},"articleSection":["Vernis"],"inLanguage":"fr-FR"},{"@type":"WebPage","@id":"https:\/\/www.omarcoatings.com\/fr\/omarpur-blanc-un-blanc-qui-ne-jaunit-pas\/","url":"https:\/\/www.omarcoatings.com\/fr\/omarpur-blanc-un-blanc-qui-ne-jaunit-pas\/","name":"Omarpur blanc, un blanc qui ne jaunit pas - 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