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Ajouter le résultat dans votre panierStar oligomers for low VOC polyurethane coatings / J. Huybrechts in SURFACE COATINGS INTERNATIONAL, Vol. 81, N° 3 (03/1998)
Titre : Star oligomers for low VOC polyurethane coatings Type de document : texte imprimé Auteurs : J. Huybrechts, Auteur ; K. Dusek, Auteur Année de publication : 1998 Article en page(s) : p. 117-127 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Hydroxyl functional star oligomers prepared by ring-opening polycondensation have a narrow molecular weight and composition distribution. Such oligomers give a solids/viscosity advantage over linear structures at the same molecular weight and can be used in low VOC two component polyurethane coatings. The solids/viscosity advantage is a combination of the highly branched structure and the narrow molecular weight distribution. Acrylic polyols formulated at the same molecular weight/polarity/average functionality and hydroxyl value give poorer drying properties. This difference can be explained by the fact that the free radical polymerisation technique leads to polymer compositions having a broad molecular weight and functionality distribution and high fractions of polymer with a low functionality. The potlife of acrylic polyols based formulations is adversely affected by the higher fractions of high molecular weight material and with a high average functionality. In low VOC polyurethane formulations star oligomers need to be formulated within a narrow range of compositions (TG, polarity), functionality and molecular weight to get an optimum balance of drying properties and potlife. Note de contenu : - HYDROXYL FUNCTIONAL (METH)ACRYLATE COPOLYMERS - FREE RADICAL POLYMERISATION
- HYDROXYL FUNCTIONAL (METH)ACRYLATE COPOLYMERS - GROUP-TRANSFER POLYMERISATION
- FILM FORMATION AND CROSSLINKING IN TWO COMPONENT POLYURETHANE COATINGS
- STAR AND HYPERBRANCHED POLYMERS
- RESULTS AND DISCUSSION : Synthesis - Solids-viscosity relation of linear against star structures - Drying-potlife of a linear acrylic against a star oligomer - Effect of star oligomer structure on drying propertiesPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16475
in SURFACE COATINGS INTERNATIONAL > Vol. 81, N° 3 (03/1998) . - p. 117-127[article]Réservation
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Titre : The influence of the method of application of the paint on the corrosion of the substrate as assessed by ASTM and electrochemical method Type de document : texte imprimé Auteurs : Pablo R. Seré, Auteur ; D. M. Santagata, Auteur ; C. I. Elsner, Auteur ; A. R. di Sarli, Auteur Année de publication : 1998 Article en page(s) : p. 128-134 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : AC together with DC and standardized procedures have considerable value in assessing the protective ability of a paint film by scientific studies of anticorrosion problems. Knowledge about the changes in permeability, conductivity and adhesion properties of coatings when exposed to aggressive environments is important, not only because it indicates how the coating may behave in practice, but also because it gives an insight into its protective properties in prevention of corrosion of the metal substrate.
From the values of corrosion potential, ionic and charge transfer resistance with immersion time, the alkyd paint applied by means of four different methods showed relatively good protective properties in the order Sy>R ≅ Sn but very poor ones for B panel. On the other hand, when submitted to the salt spray cabinet test, all the steel panels coated
with unscribed alkyd films have shown high resistance to the strongly aggressive medium. Likewise, the cross scribed panels show only corrosion at and close to the cross-scribing.
Taking into account the overall results, the most effective application method was spraying followed by roller coating, spinning and lastly brushing. Further work needs to be done to confirm some of the assumptions made here.Note de contenu : - EXPERIMENTAL PROCEDURE
- RESULTS : Electrochemical tests - Salt spray cabinet and adhesion tests
- DISCUSSION : Electrochemical measurements - Salt spray cabinet and adhesion testsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16476
in SURFACE COATINGS INTERNATIONAL > Vol. 81, N° 3 (03/1998) . - p. 128-134[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14286 - Périodique Bibliothèque principale Documentaires Disponible 14285 - Périodique Bibliothèque principale Documentaires Disponible
Titre : The effect of modified silicone copolymeres on surface tension Type de document : texte imprimé Auteurs : A. Szabo, Auteur ; P. Hencsei, Auteur Année de publication : 1998 Article en page(s) : p. 135-142 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Note de contenu : - EXPERIMENTAL AND THEIR CHARACTERISATION
- RESULTS, DISCUSSION AND CONCLUSION : Production of silicone copolymers - Surface tension survey - Survey of hydrophobic characteristics - Thermoanalytical investigations - Corrosion surveys - Other surveysPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16477
in SURFACE COATINGS INTERNATIONAL > Vol. 81, N° 3 (03/1998) . - p. 135-142[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14286 - Périodique Bibliothèque principale Documentaires Disponible 14285 - Périodique Bibliothèque principale Documentaires Disponible
Titre : New developments in water-borne resins for industrial coatings Type de document : texte imprimé Auteurs : E. Brinkman, Auteur ; F. Loos, Auteur Année de publication : 1998 Article en page(s) : p. 143-145 Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Several examples of water-borne resins for industrial coatings have been discussed. Water-borne two-pack systems for metal substrates as well as one-component systems for wood, showed interesting properties. These resins can be regarded as the first products of a new generation, where-in, good performance is combined with compliance with environmental legislation. Note de contenu : - COATINGS FOR METAL SUBSTRATES : Water-borne two-pack polyurethane systems - Synthesis of water-borne acrylic polyols - Paint preparation - Paint testing
- WATER-BORNE TWO-PACK ISOCYANATE-FREE SYSTEMS : Synthesis of water-borne epoxy and amine-functional acrylics - Paint preparation - Paint testing
- COATINGS FOR WOOD : Alkyd emulsins - Acrylic dispersionsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16478
in SURFACE COATINGS INTERNATIONAL > Vol. 81, N° 3 (03/1998) . - p. 143-145[article]Réservation
Réserver ce document
Exemplaires (2)
Code-barres Cote Support Localisation Section Disponibilité 14286 - Périodique Bibliothèque principale Documentaires Disponible 14285 - Périodique Bibliothèque principale Documentaires Disponible
Exemplaires (2)
| Code-barres | Cote | Support | Localisation | Section | Disponibilité |
|---|---|---|---|---|---|
| 14286 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |
| 14285 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |
