| Titre : |
Recent advances in isocyanate free coating technologies as an alternate to hazardous isocyanate cured polyurethane coating |
| Type de document : |
texte imprimé |
| Auteurs : |
Sangram Ghosh, Auteur ; Nirmalya Dey, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 60-70 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Durée de vie (Ingénierie)
Polyaldéhyde
Polycarbamate
Revêtements sans isocyanates
Revêtements:Peinture
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Isocyanate based polyurethane (PU) paints are well established in the coating world. PU coatings are characterized by their excellent durability, toughness, chemical resistance and stain resistance. PU coatings are used in various fields of applications such as in marine and protective coating, general industrial coatings, automotive coatings and even in architectural coating segments. However, various health, safety and environmental (HSE) legislations are limiting the use of isocyanate due to its toxicity related hazards. Also the use of renewable and green resources is gaining importance as the paint industry is gradually shirting towards eco-friendly and sustainable developments. ln this scenario non-isocyanate polyurethane and other isocyanate free coating technologies are creating a new way of thinking for the paint industry especially for ambient cured system. Few coating manufacturers have already developed and established their products based on isocyanate free chemistry. In this article, various technological approaches and recent advancements in this field have been reviewed in detail. Performance of these new chemistries in comparison to conventional isocyanate based PU has also been covered. It is expected that, the use of isocyanate free coating technology will usher a new way of sustainability for the paint industry. |
| Note de contenu : |
- STATE-OF-THE-ART IN CONVENTIONAL PU COATING : Two pack airdrying polyurethane - Single pack moisture cured PU
- TOXICITY AND HAZARDS ASSOCIATED WITH ISOCYANATE EXPOSURE
- DEVELOPMENTS IN ISOCYANATE FREE POLYURETHANE CHEMISTRY AND OTHER ALTERNATIVE TOPCOATS : Non-isocyanate polyurethane (NIPU) - NIPU formation reaction - hybrid non isocyanate polyurethane (HNIPU) - Renewable resource based NIPU - Use in NIPU in coatings - Use of HNIPU as sealants and floor coating - Use of HNIPU as sprayable PU foam - Isocyanate free polyurethane using polyaldehyde and polycarbamate - Key features of polyurethane obtained from polyaldehyde and polycarbamate - Alternate isocyanate free coating using malonate and acrylol - Pot life inhibition problem associated with Michael reaction - Acure technology - Comparison of acure with with conventional isocyanate based coating |
| En ligne : |
https://drive.google.com/file/d/1kO3hDgwTyH6_9FYvteE2dbPYfpvZLxSn/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28979 |
in PAINTINDIA > Vol. LXVII, N° 6 (06/2017) . - p. 60-70
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