Bio-based poly(hydroxyurethane) glues for metal substrates

Abstract

Bio- and CO2-based high performance thermoset poly(hydroxyurethane) (PHU) glues were designed from solvent- and isocyanate-free formulations based on cyclocarbonated soybean oil, diamines (aliphatic, cycloaliphatic or aromatic) and functional silica or ZnO fillers.

Promising approaches to improve the performances of hybrid non‐isocyanate polyurethane

“…In order to solve these shortcomings, many groups have put effort into the development of highly efficient catalysts for the synthesis of NIPU as well as studying the structure–performance relationship of NIPU . Besides, the incorporation of fillers, such as silicone backbones, ZnO, graphene oxide and carbon nanotubes, is also carried out to enhance the performance of NIPU.…”

Polymers Based on Cyclic Carbonates as Trait d'Union Between Polymer Chemistry and Sustainable CO2 Utilization

“…[178] Epoxidized oils generally consist of mixtures of triglycerides with fatty chains of different lengthsa nd epoxy content accordingt ot he kind of oil. [182] Doley and Dolui used epoxidized sunflower oil (ESFO) for the preparation of 6c-ESFO as ac omponent of bio-based PHUs. In aw ork aimed at the preparation of PHU foams, Alves et al carried out the carbonation of epoxidized soy bean oil (ESBO), leading to 6c-ESBO.…”

“…[182] Ma et al copolymerized bio-based 4u with ethylenediamine (EDA), diethylenetriamine (DETA), and isophoronediamine (IPDA) to produce PHU-4u-EDA, PHU-4u-DETA, and PHU-4u-IPDA, respectively. Because of the use of hydrophobic 6c-ESBO, no PDMS was required.…”

“…[181] 6c-ESBO prepared under such conditions was recently applied as ap recursor in the preparation of bio-based poly(hydroxyurethane) gluesf or metal substrates. [182] Doley and Dolui used epoxidized sunflower oil (ESFO) for the preparation of 6c-ESFO as ac omponent of bio-based PHUs. [183] The carbonation reaction wasc arried out in as olvent-less reaction at 120 8C( above the meltingp oint of the substrate) under 50 bar CO 2 for 12 hwith TBAB as catalyst.…”

“…Silica and zinc oxide fillers functionalized with cyclic carbonates yieldedsignificant increases in adhesion. [182] Ma et al copolymerized bio-based 4u with ethylenediamine (EDA), diethylenetriamine (DETA), and isophoronediamine (IPDA) to produce PHU-4u-EDA, PHU-4u-DETA, and PHU-4u-IPDA, respectively. [152] The PHUs were then coated on aluminum panelsi na cetonew ith BPAe poxy resin as ac ross-linker (epoxide/secondary amino groups molar ratio 1:1).…”