| Titre : |
Polyol from castor oil and epoxy resin for PU coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Keyur Somani, Auteur ; Natvar K. Patel, Auteur ; Sujata Kansara, Auteur ; Animesh Kumar Rakshit, Auteur |
| Année de publication : |
2003 |
| Article en page(s) : |
p. 35-40 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Novel reactive polyols were synthesized via modification of castor oil, a renewable agricultural raw material with epoxy resin and triethylamine as a catalyst. This polyol was used for synthesis of polyurethane coating. Coating formulations were developed by reacting polyol with aromatic adduct, aliphatic adduct and castor oil based adduct in different NCO/OH ratio. All coating composition systems show good scratch resistance, better mechanical and chemical properties. |
| Note de contenu : |
Polyurethane with variations of NCO/OH ratio
Gel permeation chromatography shows a complete reaction
Chemical differences are visible with IR
Catalyst enhance drying characteristics
Higher NCO/OH ratio worsening flexibility
Adhesion is extra ordinary
Higher density of crosslinking for good scratch, pencil hardness and chemical resistance.
Many crossling points enhance swelling resistance. |
| En ligne : |
https://drive.google.com/file/d/1YgyZiTX0HCRVap9fZs8uvhgCjZkmFgxX/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9502 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 11/03 (11/2003) . - p. 35-40
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