| Titre : |
Moisture cured coatings based on chemoenzymatically modified linseed oil |
| Type de document : |
texte imprimé |
| Auteurs : |
Vilas D. Athawale, Auteur ; K. R. Joshi, Auteur |
| Année de publication : |
2005 |
| Article en page(s) : |
p. 57-66 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
One component, moisture cure polyurethane resins were synthesised based on monoglycerides of linseed oil. Linseed oil was transesterified with n-butanol at near ambient temperature using lipase as a catalyst. Monoglyceride from the resultant transesterification product (TP) was separated using column chromatography (hexane: chloroform, 80: 20) and was further reacted with aromatic and aliphatic isocyanates in different NCO/ OH ratio to form NCO terminated polyurethane resins. Polyurethane resins synthesized by this method were very light in color as compared to conventional ones obtained from the chemically catalysed transesterification reactions at high temperatures. Significant differences in the hardness, adhesion, flexibility, impact resistance and chemical resistance were noticed when different NCO/ OH ratio of isocyanate precursors were used. |
| Note de contenu : |
- Characterization
- High performance thin layer chromatography
- Coating properties of polyurethane resins
- Enzyme catalysed transesterification
- H NMR spectroscopy
- IR spectroscopy
- Coating properties of polyurethane resins
- Mechanical properties of polyrethane resins |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11625 |
in PAINTINDIA > Vol. LV, N° 10 (10/2005) . - p. 57-66
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Moisture cured coatings based on chemoenzymatically modified linseed oil in PAINTINDIA, Vol. LV, N° 10 (10/2005)
