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Titre : Cutting the crosslinker : 2-pack wood finish offers good performance at low isocyanate levels Type de document : texte imprimé Année de publication : 2010 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Polyuréthanes
Revêtements en phase aqueuse:Peinture en phase aqueuseTags : Revêtement 'Emulsion polyuréthane' Dispersion Polyol Formulation Isocyanate Index. décimale : 667.9 Revêtements et enduits Résumé : The effects of two key formulation variables on two-pack waterborne polyurethane coatings based on a specific polyol dispersion were examined. Variations in the level or type of coalescing solvent had little effect on film properties. The dispersion also produced good film properties with little change in performance across a wide range of isocyanate addition levels. Note de contenu : - Key effects of main formulation variables.
- Test methods summarised.
- Chemical resistance and cold checking tested on wood.
- Effects of coalescing solvent on MFFT summarised.
- Coalescent strongly affects viscosity stability.
- Coalescents modify foaming behaviour and hardness.
- High tolerance for variations inn isocyanate levels.
- High performance, economy and formulating flexibility.En ligne : https://drive.google.com/file/d/1K-kUQrqTfA4C-VSz54FdPcjWq-yGw-jb/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9607
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 06/2010 (06/2010)[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012229 - Périodique Bibliothèque principale Documentaires Disponible Studies of the aging effect on the level of isocyanate residues in polyester-based can coating systems / C. Jiang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 4 (12/2009)
[article]
Titre : Studies of the aging effect on the level of isocyanate residues in polyester-based can coating systems Type de document : texte imprimé Auteurs : C. Jiang, Auteur ; M. Driffield, Auteur ; E. L. Bradley, Auteur ; Peter K. T. Oldring, Auteur ; P. Cooke, Auteur ; L. Castle, Auteur ; James Thomas Guthrie, Auteur Année de publication : 2009 Note générale : Bibliogr. Langues : Américain (ame) Tags : Polyester Polyurethane MEKO-blocked isocyanate Migration Can coatings Aging Index. décimale : 667.9 Revêtements et enduits Résumé : A methyl ethyl ketone oxime-blocked isocyanate was used as a crosslinking agent in the curing of polyester–polyurethane (PEPU) can coatings. The completeness of cure was assessed from the amount of residual (un-reacted) isophorone diisocyanate (IPDI) trimer that was presented in the coating after curing. This amount of residual trimer depended strongly on the temperature at which the curing was undertaken and time given for curing. The degree of cure was also assessed, correlating with the reduced IPDI trimer migration potential. The amount of residual IPDI trimer that was extractable from a typical PEPU coating rose markedly (15- to 20-fold) if the wet coating was aged up to 6 months before use. The presence of a TiO2 pigment increased the aging effect. An aluminum flake pigment had an even greater effect. The TiO2 pigment increased aging by different degrees according to the type of surface modification that had been applied to the pigment. The grade having the greatest alumina content, as a result of surface modification, gave the greatest aging. The undesirable effects of aging were counteracted by the addition of more catalyst to the aged coating just before the coating was used to coat panels. Deactivation of the acidic polymerization catalyst system (based on organotin compounds) is thought to be the cause of this aging. These findings have allowed improvements to be made to the specifications of the pigments and the catalysts used, with respect to the consistent industrial production of low migration coatings. DOI : 10.1007/s11998-009-9168-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9168-2.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7688
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 4 (12/2009)[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011845 - Périodique Bibliothèque principale Documentaires Disponible The behavior of MEKO-blocked isocyanate compounds in aluminum flake pigmented, polyester–polyurethane can coating / C. Jiang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 1 (01/2010)
[article]
Titre : The behavior of MEKO-blocked isocyanate compounds in aluminum flake pigmented, polyester–polyurethane can coating Type de document : texte imprimé Auteurs : C. Jiang, Auteur ; M. Driffield, Auteur ; E. L. Bradley, Auteur ; L. Castle, Auteur ; Peter K. T. Oldring, Auteur ; James Thomas Guthrie, Auteur Année de publication : 2010 Article en page(s) : p. 57-65 Note générale : Bibliogr. Langues : Américain (ame) Tags : Polyester–polyurethane MEKO-blocked isocyanate Migration Index. décimale : 667.9 Revêtements et enduits Résumé : Information is given concerning the curing characteristics of polyester–polyurethane (PEPU)-based food can coatings and the analysis of the free isocyanate by-products. The behavior of a methyl ethyl ketoxime (MEKO)-blocked isocyanate on heating was studied using thermal analytical techniques. Following this, the curing behavior of a PEPU-based can coating (PEPU01 that contained an aluminum flake pigment) and the MEKO-blocked isocyanate was investigated. A study of the unblocking of the MEKO-blocked isocyanate in the PEPU01 can coatings was undertaken with respect to the migration potential of any residual-free isocyanate compounds that could migrate from the cured PEPU can coatings to the surrounding medium (e.g., foodstuffs). DOI : 10.1007/s11998-009-9174-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9174-4.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8347
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 1 (01/2010) . - p. 57-65[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011962 - Périodique Bibliothèque principale Documentaires Disponible Study of film properties of some urethane oils / F. Seniha Güner in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 74, N° 929 (06/2002)
[article]
Titre : Study of film properties of some urethane oils Type de document : texte imprimé Auteurs : F. Seniha Güner, Auteur ; A. Gümüsel, Auteur ; S. Calica, Auteur ; A. Tuncer Erciyes, Auteur Année de publication : 2002 Article en page(s) : p. 55-59 Note générale : Bibliogr. Langues : Américain (ame) Tags : Etude expérimentale Alkyde résine comparative Adhérence Flexibilité Dureté Résistance chimique eau Feuil Propriété mécanique physique Viscosité rhéologique Formulation Isocyanate organique Huile tournesol Corps gras végétal Uréthanne polymère Liant Peinture Matériau revêtement Index. décimale : 667.9 Revêtements et enduits Résumé : In this study, sunflower oil-based urethane oils were obtained from three kinds of isocyanate components: toluene diisocyanate (TDI), hexamethylene diisocyanate (HMDI) and poly(1,4-butandiol) toluene 2,4-diisocyanate (PBTDI) terminated prepolymer. The polymers were prepared at four different ratios of isocyanate component/oil. Sunflower and linseed oil alkyd resin samples were also prepared as the comparative samples. The results suggest that the viscosity and the film properties of urethane oils depend on the amount and type of isocyanate component. The increase in isocyanate content of the urethane oils caused high viscosity. In comparison with the samples having the same oil content, PBTDI-based samples showed the highest viscosity. Viscosity of the polymers can dramatically affect some film properties. For example, high polymer viscosity caused short drying time. In comparision of alkali and water resistances of urethane oils with those of alkyd resins, better results were obtained depending on the structure of the urethane oils. On the other hand, alkyd resins and TDI-based polymers exhibited the best hardness properties. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5647
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 74, N° 929 (06/2002) . - p. 55-59[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001240 - Périodique Bibliothèque principale Documentaires Disponible The effect of difunctional acids on the performance properties of polyurethane coatings / Shailja Awasthi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 3 (09/2009)
[article]
Titre : The effect of difunctional acids on the performance properties of polyurethane coatings Type de document : texte imprimé Auteurs : Shailja Awasthi, Auteur ; Devendra Agarwal, Auteur Année de publication : 2009 Article en page(s) : p. 329-335 Note générale : Bibliogr. Langues : Américain (ame) Tags : Polyurethane coating Aromatic Linear diacids Cycloaliphatic compounds Isocyanate trimer Index. décimale : 667.9 Revêtements et enduits Résumé : Hydroxyl-terminated polyesters are the most common polyols that are crosslinked through an isocyanate group. In this study, the polyester polyol resins were synthesized by using 1,4-cyclohexanedimethanol (1,4-CHDM) with the mixture of different diacids as 1,3-cyclohexanedicarboxylicacid (1,3-CHDA), 1,4-cyclohexanedicarboxylicacid (1,4-CHDA), isophthalic acid (IPA), adipic acid (AA), and azelaic acid (AZA). The solubility and viscosity of these polyester polyol resins were determined by using suitable solvent. All the polyester polyols were crosslinked with HDI isocyanurate and IPDI trimer to form polyurethane coating films. These films were evaluated for their mechanical, thermal, and chemical resistance properties. The studies on film characteristics reveal that the cycloaliphatic diacids afforded polyurethane with greater performance properties than that of aromatic and linear aliphatic diacids. DOI : 10.1007/s11998-008-9121-9 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9121-9.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6113
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 3 (09/2009) . - p. 329-335[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011503 - Périodique Bibliothèque principale Documentaires Disponible Effect of particle size distribution on the performance of two-component water-reducible acrylic polyurethane coatings using tertiary polyisocyanate crosslinkers / Denise E. Fiori in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 72, N° 902 (03/2000)
PermalinkOptimization of UV curable acrylated polyester-polyuréthane/polysiloxane ceramer coatings using a response surface methodology / Ahmet Nebioglu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 3, N° 1 (01/2006)
PermalinkPolyorthoesters for low-VOC coatings / Hisashi Isaka in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 75, N° 937 (02/2003)
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