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Aqueous and high solids two-pack industrial finishes complying with the regulations governing the emission of volatile organic compounds (VOC's) / A. Bittner in SURFACE COATINGS INTERNATIONAL, Vol. 79, N° 4 (04/1996)
[article]
Titre : Aqueous and high solids two-pack industrial finishes complying with the regulations governing the emission of volatile organic compounds (VOC's) Type de document : texte imprimé Auteurs : A. Bittner, Auteur ; U. Epple, Auteur Année de publication : 1996 Article en page(s) : p. 177-183 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Peinture eau' haute teneur solide' deux constituants' Formulation 'Pollution air' 'Prévention pollution' 'Composé organique' volatil' Liant 'Uréthanne polymère' Index. décimale : 667.9 Revêtements et enduits Résumé : The development of high-solids and aqueous two-pack polyurethane paint systems for a wide range of industrial applications is a key area in the paint industry, which is being influenced by continuing legislation and the advent of new technologies for paint formulation and application.
A reduction in permitted levels of solvent emission during the manufacture and application of paint makes it necessary to develop new raw materials and application techniques. At the same time, it is important to ensure that the required high product quality is retained or further improved for customers.
As a result of joint development work between raw material and coating producers, machinery and equipment manufacturers and customers, new coating systems and application and disposal techniques have already been introduced in the automotive OEM and refinishing paint sectors and are currently finding wider application in general industrial finishing of metal, wood and plastics.Note de contenu : - HIGH-SOLIDS, SOLVENT-CONTAINING TWO-PACK POLYURETHANE PAINTS : solids content - binders
- PROPERTIES : application - drying - paint and film properties - uses
- AQUEOUS TWO-PACK POLYURETHANE PAINTS : binders
- PROPERTIES : application - drying - paint and film propertiesPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17041
in SURFACE COATINGS INTERNATIONAL > Vol. 79, N° 4 (04/1996) . - p. 177-183[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006570 - Périodique Bibliothèque principale Documentaires Disponible Aqueous two-pack polyurethane (2K-PUR) coatings for automotive refinish and commercial vehicles / M. Sonntag in SURFACE COATINGS INTERNATIONAL, Vol. 82, N° 9 (09/1999)
[article]
Titre : Aqueous two-pack polyurethane (2K-PUR) coatings for automotive refinish and commercial vehicles Type de document : texte imprimé Auteurs : M. Sonntag, Auteur Année de publication : 1999 Article en page(s) : p. 456-459 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Peinture eau' 'Peinture deux constituants' 'Uréthanne polymère' Utilisation 'Industrie automobile' Formulation Fabrication Peinturage 'Analyse chimique' Feuil Index. décimale : 667.9 Revêtements et enduits Résumé : The history of automotive refinishing paints begins at the turn of the century with the tradional coach varnishes based on natural resins. Considerable progress has been made over the course of time. Nitrocellulose lacquers came onto the market in 1925, followed a few years later by alkyd resins. The latter were applied initially by brushing. Is was not until about 1950, the short-oil and nitrocellulose lacquers were replaced increasingly by medium-oil alkyd resins. Note de contenu : - The requirements of the market
- Aqueous 2K-PUR coatings
- Clear coat formulation
- The physics of mixing 2K-PUR coating systems
- Analysis of the paint film
- Application of a 2K-PUR coating
- Quality of 2K-PUR coatingsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16827
in SURFACE COATINGS INTERNATIONAL > Vol. 82, N° 9 (09/1999) . - p. 456-459[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14307 - Périodique Bibliothèque principale Documentaires Disponible Effects of additives on the performance of two-component waterborne polyurethane coatings / Sharon Xudong Feng in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 71, N° 897 (10/1999)
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Titre : Effects of additives on the performance of two-component waterborne polyurethane coatings Type de document : texte imprimé Auteurs : Sharon Xudong Feng, Auteur ; Phil Lunney, Auteur ; Rebecca Wargo, Auteur Année de publication : 1999 Article en page(s) : p. 143-149 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Matériau revêtement' 'Peinture eau' deux constituants' Polyuréthane Adjuvant 'Relation composition propriété' 'Propriété rhéologique' Viscosité mécanique' optique' Feuil Dureté Brillant chimique' 'Résistance 'Etude expérimentale' Index. décimale : 667.9 Revêtements et enduits Résumé : The effects of various additives and solvents on a coating's performance in a two-component waterborne polyurethane coating system are studied using a statistical experimental design method. Using a blocked arrangement of fractional factorial design matrices, six different independent variables, including the use of different additives, catalysts, as well as solvents at different levels, were examined for their effects on various coating performance parameters, such as gloss, hardness, viscosity, and chemical resistance. Statistical analysis revealed several significant effects of these additives on the coating performances. Most importantly, several two-factor interactions between additives were also found to significantly influence the performance properties of the coating. These interactions could be very difficult to detect using traditional one-at-a-time experimental approaches. The information obtained from this study could be used for designing coating systems with superior performance properties. Note de contenu : - EXPERIMENTAL : Materials - Formulation and application - Evaluation
- RESULTS AND DISCUSSION : Continuous response - Categorical response - Coorelation between the continuous and categorical parameters - Correlation between earlier hardness and chemical resistance to coffee, acetone, and ethanolPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17946
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 71, N° 897 (10/1999) . - p. 143-149[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003565 - Périodique Bibliothèque principale Documentaires Disponible A new tailor-made polyisocyanate for two-pack waterborne polyurethane coatings / Raul Pires in PAINTINDIA, Vol. LI, N° 9 (09/2001)
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Titre : A new tailor-made polyisocyanate for two-pack waterborne polyurethane coatings Type de document : texte imprimé Auteurs : Raul Pires, Auteur ; Hans Josef Laas, Auteur Année de publication : 2001 Article en page(s) : p. 124-129 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Matériau revêtement' 'Peinture eau' deux constituants' Formulation Liant 'Uréthanne polymère' 'Isocyanate Vernis 'Etude expérimentale' Index. décimale : 667.9 Revêtements et enduits Résumé : The increasing importance of environmental considerations and growing legislative pressures have resulted in the past in the development of various concepts for formulating low-emission coatings for automotive applications. Of the various approaches taken waterborne two-component polyurethane (2K-PUR) technology has proven to yield the highest quality at low baking temperatures (T<80°C) and the lowest emissions of volatile organic compounds (VOC). Waterborne 2K-PUR coatings require the development of tailor-made raw materials that satisfy the environmental requirements of the coatings industry and yield coating systems of consistent high quality. Note de contenu : - THE SUCCESS OF 2K-PUR COATINGS
- CONCEPTS FOR FORMULATING LOW-EMISSION 2K-PUR COATINGS
- POLYISOCYANATES FOR WATERBORNE COATINGS
- NEW HYDROPHILICALLY MODIFIED POLYISOCYANATE FOR WATERBORNE COATINGS
- TEST CONDITIONS
- TECHNICAL TESTING CONDITIONS
- PARTICLE SIZE DISTRIBUTION OF HYDROPHILICALLY MODIFIED POLYISOCYANATES WHEN EMULSIFIED IN AQUEOUS DISPERSIONS
- TECHNICAL TESTING OF THE CLEARCOATS
- TECHNICAL TESTING OF WHITE COATINGSPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12472
in PAINTINDIA > Vol. LI, N° 9 (09/2001) . - p. 124-129[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001270 - Périodique Bibliothèque principale Documentaires Disponible Star oligomers with different reactivity in low VOC polyurethane coatings : part II / J. Huybrechts in SURFACE COATINGS INTERNATIONAL, Vol. 81, N° 4 (04/1998)
[article]
Titre : Star oligomers with different reactivity in low VOC polyurethane coatings : part II Type de document : texte imprimé Auteurs : J. Huybrechts, Auteur ; K. Dusek, Auteur Année de publication : 1998 Article en page(s) : p. 172-177 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Peinture deux constituants' Liant Polyuréthane Oligomère 'Polymère étoile' 'Composé organique volatil' réticulé' Réticulation Index. décimale : 667.9 Revêtements et enduits Résumé :
In this paper the effects of the reactivity of hydroxyl functional oligomers with a polyisocyanate crosslinking agent have been demonstrated by comparing the potlife/hardness of a 3.5 VOC two-component polyurethane clear coat based on a low TG, high reactive against a high TG, low reactive oligomer.
The reaction rate of two polymers forming a crosslinked network becomes diffusion controlled when, during the reaction, the increasing TG comes close to the reaction temperature.4 If this reaction takes place in the presence of a solvent which evaporates during film formation and crosslinking, the speed of evaporation will affect both the reaction rate and the film TG. The results of this study have shown that the reactivity determines the potlife whilst the TG controls the hardness. The reactivity of blends of such oligomers against pure oligomers is different as can be calculated using the theory of branching processes and as shown from practical measurements. Blends of oligomers or a pure oligomer with up to 75% of the properties of the high TG, low reactive oligomer do show a hardness close to the properties of the low TG, high reactive oligomer which further proves that the chemical reactivity controls the overall drying performance. A fast chemical reactivity shortens the potlife with a risk of solvent entrapment near to and at the gel point which results in low hardness.Note de contenu : - THEORETICAL BACKGROUND : Star with groups of different reactivity - Network build-up and gelation - Kinetics - Mixture of more and less reactive stard - Gelation and network formation - Kinetics Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16528
in SURFACE COATINGS INTERNATIONAL > Vol. 81, N° 4 (04/1998) . - p. 172-177[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14288 - Périodique Bibliothèque principale Documentaires Disponible 14287 - Périodique Bibliothèque principale Documentaires Disponible