{"id":3442,"date":"2024-06-21T04:56:11","date_gmt":"2024-06-21T04:56:11","guid":{"rendered":"https:\/\/chicchem.com\/?post_type=product&#038;p=3442"},"modified":"2024-06-21T04:58:19","modified_gmt":"2024-06-21T04:58:19","slug":"double-metal-cyanide-complex-dmc","status":"publish","type":"product","link":"https:\/\/chicchem.com\/fr\/produit\/double-metal-cyanide-complex-dmc\/","title":{"rendered":"Complexe de cyanure double m\u00e9tal (DMC)"},"content":{"rendered":"<p><span style=\"color: #28a7de;\"><strong><b>Description du produit<\/b><\/strong><\/span><\/p>\n<p><span style=\"color: #000000;\">Structure chimique:<\/span><\/p>\n<p><span style=\"color: #000000;\">Zn3\u3014Co(CN)6\u30152\u00b7aZnCl2\u00b7bH2O\u00b7alcool ctert-butylique<\/span><\/p>\n<p><span style=\"color: #000000;\">Nom chimique\u00a0: ch\u00e9late de tert-butanol d&#039;hexacyanocobaltate de zinc<\/span><\/p>\n<p><span style=\"color: #000000;\">DMC Catalyst est un catalyseur de pointe pour la polym\u00e9risation par ouverture de cycle des ol\u00e9fines oxyd\u00e9es, con\u00e7u pour la synth\u00e8se de poly\u00e9thers d&#039;ol\u00e9fines oxyd\u00e9es avec 1 \u00e0 6 groupes fonctionnels comme initiateurs. Par rapport aux catalyseurs alcalins, l&#039;utilisation de catalyseurs DMC pour la production de poly\u00e9ther pr\u00e9sente plusieurs avantages\u00a0:<\/span><\/p>\n<p><span style=\"color: #000000;\">1. Co\u00fbts de production et d\u2019exploitation r\u00e9duits\u00a0:<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">\u00c9limine le besoin de proc\u00e9dures de post-traitement, ce qui entra\u00eene des vitesses de r\u00e9action acc\u00e9l\u00e9r\u00e9es et une augmentation significative de la capacit\u00e9 de production des appareils.<\/span><\/li>\n<li><span style=\"color: #000000;\">En omettant les \u00e9tapes de post-traitement, il y a une diminution de l&#039;investissement en \u00e9quipement, de la consommation d&#039;\u00e9nergie, de la consommation d&#039;eau, des d\u00e9chets solides et de la production d&#039;eaux us\u00e9es par unit\u00e9 de produit, conduisant \u00e0 un meilleur rendement du produit.<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">2. Propri\u00e9t\u00e9s am\u00e9lior\u00e9es du produit\u00a0:<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">Facilite la production de poly\u00e9thers de poids mol\u00e9culaire plus \u00e9lev\u00e9, avec un poids mol\u00e9culaire par groupe hydroxyle sup\u00e9rieur \u00e0 2000.<\/span><\/li>\n<li><span style=\"color: #000000;\">Donne des poly\u00e9thers caract\u00e9ris\u00e9s par une distribution \u00e9troite du poids mol\u00e9culaire, des sous-produits r\u00e9duits, de faibles niveaux d&#039;insaturation et une odeur minimale.<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">3. Propri\u00e9t\u00e9s am\u00e9lior\u00e9es dans les applications PU\u00a0:<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">Lorsqu&#039;il est appliqu\u00e9 dans le domaine PU (\u00e9lastom\u00e8res, mousse souple, mousse haute r\u00e9silience, rev\u00eatements, mastics), des am\u00e9liorations significatives sont observ\u00e9es dans diverses propri\u00e9t\u00e9s telles que la r\u00e9sistance \u00e0 la traction, l&#039;allongement et la r\u00e9sistance \u00e0 la pression.<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #28a7de;\"><strong><b>Propri\u00e9t\u00e9s physiques<\/b><\/strong><\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td style=\"background-color: #bce4f5;\" width=\"510\"><span style=\"color: #000000;\">Forme physique<\/span><\/td>\n<td width=\"667\"><span style=\"color: #000000;\">poudre blanche \u00e0 gris clair<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #bce4f5;\" width=\"510\"><span style=\"color: #000000;\">Densit\u00e9 apparente, g\/ml<\/span><\/td>\n<td width=\"667\"><span style=\"color: #000000;\">0.30-0.40<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #bce4f5;\" width=\"510\"><span style=\"color: #000000;\">Surface sp\u00e9cifique, m2\/g \u2264<\/span><\/td>\n<td width=\"667\"><span style=\"color: #000000;\">20.0<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #bce4f5;\" width=\"510\"><span style=\"color: #000000;\">Point de fusion \u2103 \u2265<\/span><\/td>\n<td width=\"667\"><span style=\"color: #000000;\">202<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"color: #28a7de;\"><strong><b>Guide d&#039;utilisation<\/b><\/strong><\/span><\/p>\n<p><span style=\"color: #000000;\">\u00a0 \u00a0 \u00a0 \u00a01.<strong><b>Conditions de d\u00e9marrage<\/b><\/strong><\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">Compos\u00e9s contenant des hydroxyles : Monoalcools \u2013 alcools gras dont le point d&#039;\u00e9bullition d\u00e9passe 100\u00b0C, monoalcools partiellement modifi\u00e9s par de l&#039;oxyde de propyl\u00e8ne ou de l&#039;oxyde d&#039;\u00e9thyl\u00e8ne. D&#039;autres monoalcools peuvent \u00eatre utilis\u00e9s \u00e0 condition qu&#039;ils \u00e9liminent efficacement l&#039;eau. Polyols \u2013 y compris l&#039;(iso)propyl\u00e8ne glycol, la glyc\u00e9rine ou d&#039;autres poly\u00e9thers d&#039;oxyde de propyl\u00e8ne d\u00e9riv\u00e9s de petites mol\u00e9cules avec trois valences ou plus, les copoly\u00e9thers d&#039;oxyde de propyl\u00e8ne\/oxyde d&#039;\u00e9thyl\u00e8ne, les poly\u00e9thers enti\u00e8rement d&#039;oxyde d&#039;\u00e9thyl\u00e8ne, les poly\u00e9thers de t\u00e9trahydrofurane, les copoly\u00e9thers de t\u00e9trahydrofurane\/oxyde de propyl\u00e8ne, etc. Ph\u00e9nols englobent les monoph\u00e9nols et les bisph\u00e9nols. Les utilisateurs disposent d&#039;un choix plus large d&#039;alcools ou de compos\u00e9s contenant des groupes hydroxyles comme initiateurs, tels que les alcools dihydriques gras, les alcools mono et dibasiques insatur\u00e9s, les polyesters polyols, etc. Essentiellement, les exemples fournis dans ce manuel servent de lignes directrices.<\/span><\/li>\n<li><span style=\"color: #000000;\">Plage de poids mol\u00e9culaire\u00a0: Polyol\u00a0-\u00a0350 ~ 1\u00a0000 ou poids mol\u00e9culaire sup\u00e9rieur.<\/span><\/li>\n<li><span style=\"color: #000000;\">\u2211Mn+ (se r\u00e9f\u00e8re principalement aux ions K, Na) \u2264 5 ppm<\/span><\/li>\n<li><span style=\"color: #000000;\">Teneur en eau \u2264 0,1%<\/span><\/li>\n<li><span style=\"color: #000000;\">Indice d&#039;acide \u2264 0,15mgKOH\/g<\/span><\/li>\n<\/ul>\n<ol start=\"2\">\n<li><span style=\"color: #000000;\"><b><\/b><strong>Op\u00e9ration<\/strong><\/span><\/li>\n<\/ol>\n<ul>\n<li><span style=\"color: #000000;\">Rincer soigneusement le r\u00e9acteur avec de l&#039;eau d\u00e9min\u00e9ralis\u00e9e pour \u00e9liminer les ions K+ et emp\u00eacher la d\u00e9sactivation du catalyseur.<\/span><\/li>\n<li><span style=\"color: #000000;\">Apr\u00e8s avoir s\u00e9ch\u00e9 sous vide le r\u00e9acteur, introduisez l&#039;initiateur (poly\u00e9ther de faible poids mol\u00e9culaire avec une teneur en K+ \u2264 5 ppm), le catalyseur et l&#039;acide phosphorique. Utilisez 35 \u00e0 40 ppm (produit final) de catalyseur et 30 ppm (produit final) d&#039;acide phosphorique. Bullez du gaz ammoniac pendant 1 heure (de pr\u00e9f\u00e9rence sous vide), en garantissant que la teneur en oxyg\u00e8ne est \u22640,015%.<\/span><\/li>\n<li><span style=\"color: #000000;\">Une fois que la temp\u00e9rature du r\u00e9acteur atteint 130\u00b0C-140\u00b0C, ajoutez une quantit\u00e9 sp\u00e9cifique de PO (ou PO\/EO) pour augmenter la pression du r\u00e9acteur \u00e0 0,2-0,45 MPa. Au fur et \u00e0 mesure que la pression chute de mani\u00e8re significative, ajoutez progressivement le PO restant (ou PO\/EO). Maintenir la temp\u00e9rature de r\u00e9action entre 135\u00b0C et 145\u00b0C pendant 1 heure.<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">Remarque : Contr\u00f4lez le d\u00e9bit d\u2019alimentation pour \u00e9viter les fluctuations rapides de temp\u00e9rature pendant la phase initiale de la r\u00e9action.<\/span><\/p>\n<p><span style=\"color: #28a7de;\"><strong><b>Emballer<\/b><\/strong><strong><b>\u00a0<\/b><\/strong><\/span><\/p>\n<p><span style=\"color: #000000;\">Poids net 250g*2\/sac ou selon sp\u00e9cifications client.<\/span><\/p>\n<p><span style=\"color: #28a7de;\"><strong><b>Dur\u00e9e de conservation<\/b><\/strong><\/span><\/p>\n<p><span style=\"color: #000000;\">12 mois \u00e0 compter de la date de production sous emballage d&#039;origine non ouvert.<\/span><\/p>\n<p><span style=\"color: #28a7de;\"><strong><b>Stockage <\/b><\/strong><\/span><\/p>\n<p><span style=\"color: #000000;\">Veuillez conserver dans un endroit sec \u00e0 une temp\u00e9rature de 25 \u00b1 10 \u2103 et \u00e9viter l&#039;exposition \u00e0 la lumi\u00e8re directe et \u00e0 la chaleur directe.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Prot\u00e8ge les mat\u00e9riaux des dommages oxydatifs, prolongeant leur dur\u00e9e de vie.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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