[article]
| Titre : |
The use of levulinates as coalescing agents in water-based coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Steve Block, Auteur |
| Année de publication : |
2022 |
| Article en page(s) : |
p. 24-29 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Agents coalescents
Composés organiques -- Synthèse
Essais (technologie)
Lévulinates
Revêtements en phase aqueuse -- Additifs
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The need to develop and implement affordable and sustainable large-scale operations for the conversion of renewable resources to chemical building blocks is becoming increasingly urgent and essential in reducing global dependence on fossil fuels, including the critical aspect of minimizing the carbon footprint of the chemical industry.
Commercial-scale manufacturing of second-generation biomass-derived chemicals has been implemented. It demonstrates novel technologies in bio-solvents based on the conversion of biomass to derivatives of levulinic acid. Products that are now commercially available include ethyl levulinate, butyl levulinate, levulinate propanediol ketal, and levulinate glycerol ketal. Levulinic acid derivatives are considered key technologies for moving toward petrochemical-free chemistry, but commercial-scale production has long been hampered by the chickenand-egg story between capital investment and market demand.
Produced from agricultural waste, derivatives of levulinic acid, such as butyl levulinate and ethyl levulinate propanediol ketal, can be used as sustainable alternatives to materials such as 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, 2,2-dimethyl-1-(methylethyl)-1,3-propanediyl bis(2-methylpropanoate), and triethylene glycol bis(2-ethylhexanoate). A comparison of the key properties of these coalescing agents are shown in Table 1.
The demonstrated performance of these levulinic acid derivatives, along with the resultant lower-use level in many resin systems, address industry needs to reach targeted cost-performance criteria with sustainable chemistry. Their limited water solubility assists in demonstrating a high level of effectiveness in lowering the MFFT as well as frequently enhancing properties of the film, notably the hardness. Levulinates have an excellent health, safety, and environmental profile and contain up to 100% biobased carbon, aiding their position to replace traditional petrochemical coalescing agents.
This article will provide a detailed discussion of the technology, application case studies, and environmental impacts of this technology. |
| Note de contenu : |
- The technology
- The four pillars
- Application testing
- Responding to the market
- Health, safety, and environmental impact
- Table 1 : Properties of coalescing agents
- Table 2 : Comparative performance of coalescing agents in Neocryl A-6099
- Table 3 : Comparative performance of coalescing agents in Zffle SE-310
- Table 4 : Comparative performance of coalescing agents in Neocryl XK 170
- Table 5 : Health and environmental profile of coalescing agents in the study
- Fig. 1 : DOE TOP 12 renewable chemicals
- Fig. 2 : Levulinic acid derivates process flow diagram
- Fig. 3 : Synthesis of levulinate propanediol ketal
- Fig. 4 : Comparative performance of coalescing agents in Neocryl XK 170 |
| En ligne : |
https://drive.google.com/file/d/1FMA6MjL7Ucf8Qv_zSVgNbp7i_u2HmZVW/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37862 |
in COATINGS TECH > Vol. 19, N° 5 (05-06/2022) . - p. 24-29
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The use of levulinates as coalescing agents in water-based coatings in COATINGS TECH, Vol. 19, N° 5 (05-06/2022)
