Multifunctional photoinitiators (MFPIs) : A new concept / R. Burrows in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 87, B2 (06/2004)  

[article]  inSURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 87, B2 (06/2004) . - p. 127-135 Titre : Multifunctional photoinitiators (MFPIs) : A new concept Type de document : texte imprimé Auteurs : R. Burrows, Auteur ; R. Stephen Davidson, Auteur ; Derek R. Illsley, Auteur Année de publication : 2004 Article en page(s) : p. 127-135 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Calorimétrie Emballages Encre -- Séchage Encre d'imprimerie Extraction (chimie) Photoamorceurs (chimie) Produits chimiques -- Migration Revêtements -- Séchage sous rayonnement ultraviolet Revêtements organiques Silanes Spectroscopie infrarouge en temps réel Index. décimale : 667.9 Revêtements et enduits Résumé : The migration of unreacted photoinitiators and their by-products from UV-cured printing inks and coatings is an increasing concern for food packaging applications. This paper describes the synthesis of novel multifunctional photoinitiators (MFPI) for use in UV curing, with the aim of decreasing the amount of extractable components present in a UV-cured coating. The activity of these MFPIs was investigated using differential photocalorimetry (DPC) and real-time infrared spectroscopy (RTIR). These analytical techniques demonstrated that the increase in functionality and molecular weight of MFPIs did not affect the efficiency of the PI in initiating UV-curing polymerisation reactions. The extraction studies and high-performance liquid chromatography (HPLC) analysis demonstrated that the use of MFPI can bring about a considerable reduction in the amount of free PI extracted from the coating as the high functionality increased the likelihood of the PI being bound into the polymer coating. Note de contenu : - PREPARATIVE ROUTES TO MULTIFUNCTIONAL PHOTOINITIATORS : Preparation of aromatic ether-linked MFPI - Preparation of aromatic ester-linked MFPI - Preparation of aliphatic ester-linked MFPIs - Prepraation of amine-ene-linked MFPIs - Preparation of thiol-ene-linked MFPIs - SILANE CHEMISTRY DOI : 10.1007/BF02699607 En ligne : https://link.springer.com/content/pdf/10.1007/BF02699607.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5473 [article]

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