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Evaluation of the VOC content of coalescing aids / Kevin W. McCreight in COATINGS TECH, Vol. 2, N° 16 (05/2005)  

[article]  inCOATINGS TECH > Vol. 2, N° 16 (05/2005) . - p. 26-34 Titre : Evaluation of the VOC content of coalescing aids Type de document : texte imprimé Auteurs : Kevin W. McCreight, Auteur ; Weimin C. Liang, Auteur Année de publication : 2005 Article en page(s) : p. 26-34 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 667.9 Revêtements et enduits Résumé : The current standard for determination of volatile organic compounds (VOCs) in paint and coating systems in the United States is EPA Method 24 (ASTM D 3960-02). It has been reported that VOC measurements carried out using this method have errors which increase nearly exponentially at VOC levels less than 250 g/L.1 Due to the uncertainties inherent in this test method, certain classes of coatings additives have traditionally been evaluated as neat products rather than in fully formulated paints. This article outlines experimentation that was carried out to quantify the actual VOC levels of two representative coalescing aids in formulated paints using both EPA Method 24 and a proposed alternative test method that utilizes an automated thermal desorber (ATD) with flame ionization detection (FID). Results indicate that in formulated paints, the measured VOCs of coatings additives are in some cases less than the VOCs observed when these additives are tested as neat materials. En ligne : https://drive.google.com/file/d/1_oalMqxf6Aps44exaugP32s_Ppjrlr4X/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5511 [article]

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Controlled oxidative curing of tung oil / N. M. Martyak in COATINGS TECH, Vol. 2, N° 16 (05/2005)  

[article]  inCOATINGS TECH > Vol. 2, N° 16 (05/2005) . - p. 36-41 Titre : Controlled oxidative curing of tung oil Type de document : texte imprimé Auteurs : N. M. Martyak, Auteur ; Conor Dowling, Auteur ; Robert Picker, Auteur ; Daniel Alford, Auteur Année de publication : 2005 Article en page(s) : p. 36-41 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 667.9 Revêtements et enduits Résumé : Antiskinning agents are used to control the oxidative curing of tung oil catalyzed using a cobalt drier. Additives agents that are too volatile result in the premature formation of a cured oil (e.g., skin), whereas antiskinning agents that are slow to release from the fatty oil may delay drying altogether. Methyl ethyl ketoxime is currently the most popular antiskinning agent; but due to its relatively high volatility coupled with associated health hazards, new antiskinning agents are being sought for aqueous and solvent-based alkyds. In this article, new formulations containing an antiskin agent and a co-promoter to activate the metallic drier, providing excellent antiskinning performance while providing improvement in dry-through performance, are presented. En ligne : https://drive.google.com/file/d/1VHVXMOi37zTMExoN5meCyD3oc1yImTzZ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5512 [article]

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