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Impact of functional group distribution on the adsorption of a polymeric dispersant / Iwao Soga in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 75, N° 938 (03/2003)
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Titre : Impact of functional group distribution on the adsorption of a polymeric dispersant Type de document : texte imprimé Auteurs : Iwao Soga, Auteur Année de publication : 2003 Article en page(s) : p. 53-58 Note générale : Bibliogr. Langues : Américain (ame) Tags : Polymère Liant Groupe fonctionnel Pigment Adsorption Dispersant Adjuvant Peinture Matériau revêtement Index. décimale : 667.9 Revêtements et enduits Résumé : Binder polymers functionalized with a small amount of polar groups satisfy both the dispersion quality of paints and the mechanical strength of coating films. For industrial-grade polydisperse dispersant polymers, functional groups are not evenly distributed among the polymer chains. The functional group distribution in polyurethane dispersant polymers was investigated by statistical estimation and an adsorption experiment. The polymeric dispersants had a broad functional group distribution and contained a significant amount of non-functionalized chains. By considering the existence of these ineffective chains, the dispersion behavior of the paint was more clearly explained. The described method can be a useful tool to analyze the structure and the properties of polydisperse functionalized polymers for various applications. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5596
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 75, N° 938 (03/2003) . - p. 53-58[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000563 - Périodique Bibliothèque principale Documentaires Disponible Low VOC carbamate functional coatings compositions for automotive topcoats / Marvin L. Green in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 918 (07/2001)
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Titre : Low VOC carbamate functional coatings compositions for automotive topcoats Type de document : texte imprimé Auteurs : Marvin L. Green, Auteur Année de publication : 2001 Article en page(s) : p. 55-62 Note générale : Bibliogr. Langues : Américain (ame) Tags : Industrie automobile Matériau revêtement Peinture Vernis Liant Formulation Polymère fonctionnel Carbamate organique Composé volatil Feuil Propriété physique mécanique haute teneur solide Index. décimale : 667.9 Revêtements et enduits Résumé : Polymers and oligomers having carbamate functional groups have been used in a variety of curable coating compositions. Carbamate functional polymers offer many advantages for automotive topcoats, such as outstanding resistance to environmental etching, scratching and marring, humidity, and UV exposure. Hydrophobic carbamate oligomers suitable for crosslinking with standard amino resins were synthesized and formulated into stable one-pack automotive clearcoats with low volatile organic compound (VOC) and excellent physical properties. Because of their unusually steep thermal viscosity curves, these oligomers are particularly adaptable to hot spray techniques that enable coatings in the 85-90% weight solids range to be applied with conventional electrostatic mini-bells. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5739
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Code-barres Cote Support Localisation Section Disponibilité 001226 - Périodique Bibliothèque principale Documentaires Disponible Polyorthoesters for low-VOC coatings / Hisashi Isaka in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 75, N° 937 (02/2003)
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Titre : Polyorthoesters for low-VOC coatings Type de document : texte imprimé Auteurs : Hisashi Isaka, Auteur ; Yoichi Yonehara, Auteur Année de publication : 2003 Article en page(s) : p. 59-65 Note générale : Bibliogr. Langues : Américain (ame) Tags : Etude expérimentale Feuil Propriété mécanique physique Isocyanate organique Réticulation Durcissement Hydroxyle Groupe fonctionnel Préparation Orthoester Ester polymère Liant Formulation Peinture haute teneur solide Matériau revêtement Index. décimale : 667.9 Revêtements et enduits Résumé : A series of new oligomeric polyorthoesters for low-VOC coatings was prepared by protecting OH groups with orthoester compounds to achieve both low viscosity and excellent compatibility with crosslinking agents. These new oligomeric polyorthoesters were synthesized through a co-condensation reaction among polyol, orthoester, and alpha- or béta-glycol compounds under an acidic condition. Here, the alpha-or béta-glycol compounds were used as stoppers to prevent excessive polymerization. The polyorthoesters can easily be hydrolyzed with atmospheric moisture, and the produced OH groups can react with appropriate crosslinking agents. It is unique in this system that even the stoppers, alpha- or béta-glycol compounds, can react with the crosslinking agents to achieve an extremely low VOC emission. The polyorthoesters cured with polyisocyanate compounds proved to be highly crosslinked polymers showing excellent mechanical properties, chemical resistance, etc. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5607
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Code-barres Cote Support Localisation Section Disponibilité 000562 - Périodique Bibliothèque principale Documentaires Disponible