| Titre : |
Synthetic leather without solvents : Very high solids dispersions developed for textile coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Thomas Michaelis, Auteur ; Holger Casselmann, Auteur |
| Année de publication : |
2009 |
| Article en page(s) : |
p. 38-41 |
| Langues : |
Anglais (eng) |
| Catégories : |
Cuir synthétique
Enduction
Haut extrait sec
Polymères en émulsion
Polyuréthanes
Réduction des composés organiques volatils
Revêtements
Textiles et tissus
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Polyurethane synthetic leathers are normally produced in a multi-stage process which involves removing toxic dimethyl formamide (DMF) from a solventborne layer, then applying a solventborne wear layer. Solvent-free waterborne PU dispersions with a very high solids content of 60% and excellent performance have now been produced for this application. |
| Note de contenu : |
- Different processes create 'feel' and wear resistance
- Waterborne formulations have had major limitations
- Frothed foam replaces solvent displacement process
- Bimodal size distribution is the key to high solids
- Four products cover most application needs
- Emissions reduced by a factor of ten
- Application and environmental benefits
- FIGURES : 1. Images taken under a scanning electron microscope of a solventborne PU synthetic leather layer produced using the coagulation process (left) and a frothed foam layer based on the new high-solids PU dispersions (right) ; shown with transfer coating in lower pictures - 2. VOC emissions (in thermal desorption test) and fogging test values on synthetic leathers for two applications
- TABLES : 1. Properties of the four new PU dispersions with 60% solids content - 2. Comparison of the properties of solventborne and waterborne PU synthetic leathers |
| En ligne : |
https://drive.google.com/file/d/1pxuhuf7yc41Wef4f62r5euJtwXZiqFY8/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24202 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 2/2009 (02/2009) . - p. 38-41
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Synthetic leather without solvents in EUROPEAN COATINGS JOURNAL (ECJ), N° 2/2009 (02/2009)
