Bringing non-isocyanate polyurethanes closer to industrial implementation using carbonated soybean oil-based amino hardeners

dc.contributor.authorCenteno-Pedrazo, Ander
dc.contributor.authorFreixa, Zoraida
dc.contributor.authorFeola, Roland
dc.contributor.authorLunzer, Florian
dc.contributor.authorGarcia-Suarez, Eduardo J.
dc.contributor.authorOrtiz, Pablo
dc.contributor.institutionTecnalia Research & Innovation
dc.contributor.institutionBIOECONOMÍA Y CO2
dc.date.accessioned2024-07-24T12:09:20Z
dc.date.available2024-07-24T12:09:20Z
dc.date.issued2023-12
dc.descriptionPublisher Copyright: © 2023 The Authors
dc.description.abstractThe polyaddition between cyclic carbonates and diamines to form non-isocyanate polyurethanes (NIPUs) is a safer alternative than traditional PU synthesis. However, the lower reactivity of cyclic carbonates requires of long reaction times and/or high temperatures for their curing, hampering their industrial implementation in the coating industry. Starting from carbonated soybean oil (CSBO) and amine excess, and through a stepwise addition process, cyclic carbonate full conversion has been achieved, yielding amino-terminal NIPUs with up to 62 % of biobased content. These amino-terminal NIPUs act as regular amino hardeners, and have been used to cure epoxy resins under the time and temperature required by the coating industry. The performance of these partially bio-based, NIPU-epoxy hybrid coatings was evaluated by pot-life, drying, hardness and solvent resistance, achieving comparable results to the industrial formulations. The simple synthesis process, the suitable curing conditions and the properties of the coatings, bring NIPU chemistry closer to industrial implementation.en
dc.description.statusPeer reviewed
dc.identifier.citationCenteno-Pedrazo , A , Freixa , Z , Feola , R , Lunzer , F , Garcia-Suarez , E J & Ortiz , P 2023 , ' Bringing non-isocyanate polyurethanes closer to industrial implementation using carbonated soybean oil-based amino hardeners ' , Progress in Organic Coatings , vol. 185 , 107925 . https://doi.org/10.1016/j.porgcoat.2023.107925
dc.identifier.doi10.1016/j.porgcoat.2023.107925
dc.identifier.issn0300-9440
dc.identifier.urihttps://hdl.handle.net/11556/3963
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85169799722&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofProgress in Organic Coatings
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subject.keywordsBio-based
dc.subject.keywordsCoating
dc.subject.keywordsEpoxy
dc.subject.keywordsIndustrial
dc.subject.keywordsNIPU
dc.subject.keywordsGeneral Chemical Engineering
dc.subject.keywordsSurfaces, Coatings and Films
dc.subject.keywordsOrganic Chemistry
dc.subject.keywordsMaterials Chemistry
dc.titleBringing non-isocyanate polyurethanes closer to industrial implementation using carbonated soybean oil-based amino hardenersen
dc.typejournal article
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