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Blends of CNSL phenol-formaldehyde-ketonic resin : a cost effective endeavour to enhance performance of conventional CNSL coatings / Vilas D. Athawale in PAINTINDIA, Vol. LVIII, N° 12 (12/2008)
[article]
Titre : Blends of CNSL phenol-formaldehyde-ketonic resin : a cost effective endeavour to enhance performance of conventional CNSL coatings Type de document : texte imprimé Auteurs : Vilas D. Athawale, Auteur ; Narendra J. Shetty, Auteur Année de publication : 2008 Article en page(s) : p. 69-78 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Blend CNSL Coating properties Ketonic (Cyclohexanone formaldehyde) resin Index. décimale : 667.9 Revêtements et enduits Résumé : Cashew nut shell liquid (CNSL) and phenol formaldehyde were synthesised in the laboratory and subsequently blended with ketonic (cyclohexanone formaldehyde) resin. The physico-mechanical and performance properties such as drying time, hardness, adhesion, flexibility, gloss, skinning tendency, corrosion, impact resistance and chemical resistance were examined at various compositions of the modified CNSL resin and ketonic resin blend.
The 50:50 percent (w/w) of CNSL-phenol-formaldehyde - ketonic (cyclohexanone formaldehyde) resin blend exhibited enhanced coating properties as compared to any other proportions of the blend.Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6935
in PAINTINDIA > Vol. LVIII, N° 12 (12/2008) . - p. 69-78[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011352 - Périodique Bibliothèque principale Documentaires Disponible Dimethyl secondary amine chain extenders : a conceptual approach to in situ generation of advanced epoxy resins for rapid-cure, low-VOC coatings / Frederick H. Walker in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 3 (09/2009)
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Titre : Dimethyl secondary amine chain extenders : a conceptual approach to in situ generation of advanced epoxy resins for rapid-cure, low-VOC coatings Type de document : texte imprimé Auteurs : Frederick H. Walker, Auteur ; Rob Rasing, Auteur ; Gamini A. Vedage, Auteur ; Michael Cook, Auteur Année de publication : 2009 Article en page(s) : p. 283-313 Note générale : Bibliogr. Langues : Américain (ame) Tags : Poly(N-methylazetidine) Dimethyl-meta-xylylenediamine Pseudo-first-order kinetic Amine reactivity epoxy curing agent Epoxy resin coating Flexibility Crosslink density Miller-Macosko calculation Chain extender VOC Low temperature cure Environmental movement Electrochemical impedance Aine reaction mechanism Mannich base Index. décimale : 667.9 Revêtements et enduits Résumé : Advanced epoxy resin oligomers have traditionally been utilized for coatings that combine fast dry-to-touch speed and good flexibility--properties demanded in many markets such as marine and industrial maintenance coatings. Unfortunately, advanced epoxy resins require formulation with large quantities of solvent that make attainment of modern VOC regulations difficult or impossible. Coatings formulated from low molecular weight liquid epoxy resin, on the other hand, can easier meet VOC challenges, but dry slowly and tend to be brittle. This presentation explores the concept of using fast reacting, di-functional amine chain extenders to generate epoxy oligomers in situ as a means to meet these opposing property demands. Methylamine-terminated poly-(N-methylazetidine) (pNMAz, 1) is prepared in a two-step process involving the Michael addition of methylamine to acrylonitrile, followed by hydrogenation in a methylamine-containing atmosphere to yield an oligomer stream with an [M.sub.n] of about 250. Competitive pseudo-first-order kinetic measurements conducted in isopropyl alcohol indicate methyl-substituted disecondary diamines reacted approximately 3 to 3.6 times faster with phenyl glycidyl ether (PGE) than the primary amine meta-xylylenediamine (MXDA). These chain extenders can be formulated with traditional multi-functional amine crosslinkers to yield coatings with lower VOC, faster dry speed, and better flexibility compared to corresponding coatings formulated without the chain extender. DOI : 10.1007/s11998-009-9178-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9178-0.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6111
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 3 (09/2009) . - p. 283-313[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011503 - Périodique Bibliothèque principale Documentaires Disponible Synthesis and structural characterization of urea–isobutyraldehyde–formaldehyde resins / Yi-fu Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 3 (09/2009)
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Titre : Synthesis and structural characterization of urea–isobutyraldehyde–formaldehyde resins Type de document : texte imprimé Auteurs : Yi-fu Zhang, Auteur ; Bi-ye Ren, Auteur ; Xing-rong Zeng, Auteur Année de publication : 2009 Article en page(s) : p. 337-344 Note générale : Bibliogr. Langues : Américain (ame) Tags : Urea Isobutyraldehyde Formaldehyde Resin Structure Characterization Index. décimale : 667.9 Revêtements et enduits Résumé : Urea–isobutyraldehyde–formaldehyde (UIF) resins were synthesized using urea, isobutyraldehyde, and formaldehyde; sulfuric acid was used as a catalyst. The effects of molar ratio of urea/isobutyraldehyde/formaldehyde (U/I/F) on the properties of resins were investigated, and the structures of the resins were characterized by FTIR, 1H-NMR, and 13C-NMR. When U/I/F was 1.0/3.6/2.4, the yield of the resin was 76.5 %. The softening point and hydroxyl value were 90°C and 32 mg KOH/g, respectively. The FTIR, 1H-NMR, and 13C-NMR results showed that an a-ureidoalkylation reaction occurred between urea and isobutyraldehyde to form a lactam. The UIF resins also contained hydroxyl groups and aldehyde groups; the content of aldehyde groups in the resin increased as the amount of isobutyraldehyde increased. DOI : 10.1007/s11998-008-9126-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9126-4.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6114
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 3 (09/2009) . - p. 337-344[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011503 - Périodique Bibliothèque principale Documentaires Disponible An innovative composite wind turbine: for homeowners and professionals / Serge Elenga in JEC COMPOSITES MAGAZINE, N° 49 (06/2009)
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Titre : An innovative composite wind turbine: for homeowners and professionals Type de document : texte imprimé Auteurs : Serge Elenga, Auteur Année de publication : 2009 Article en page(s) : p. 49-50 Langues : Anglais (eng) Catégories : Eoliennes -- Matériaux Tags : Wind turbine Resin Transfer Moulding (RTM) Sheet Compound Glass Polyester Epoxy Index. décimale : 620.19 Autres matériaux Résumé : Nheolis has developed and now commercializes a revolutionary wind turbine for homeowners and professionals. Thanks to its innovative design, this technology optimizes the use of wind energy and provides a long-term answer to energy needs. The blades' unique shape fully exploits the air-flow kinetic energy for unequalled energy production. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6068
in JEC COMPOSITES MAGAZINE > N° 49 (06/2009) . - p. 49-50[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011413 - Périodique Bibliothèque principale Documentaires Disponible