Sustainable, rigid imide building blocks as promising substitutes for phthalic anhydride in alkyd resins,Polymer International

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Sustainable, rigid imide building blocks as promising substitutes for phthalic anhydride in alkyd resins
Polymer International ( IF 2.9 ) Pub Date : 2020-06-22 , DOI: 10.1002/pi.6069
Douglas R Hayden ₁ , Alwin Papegaaij ₁ , Bart Reuvers ₁ , Paul Buijsen ₁ , Cor Koning _{1,

2}

Affiliation

New, highly rigid bio‐based building blocks were synthesized from renewable raw materials. In a first reaction step, an imide was made from citraconic anhydride and the amino acid glycine. This imide was subsequently reacted with sorbic acid using Diels–Alder chemistry, furnishing a double‐ring structure. This new, very rigid renewable building block was then incorporated into alkyd resins by standard polycondensation chemistry and technology. The resulting, >80 wt% renewable, alkyd resins were evaluated as white paints in a preliminary way by solvent casting from xylene. The properties of the renewable coatings look promising, some even outperforming those of standard commercial alkyd resins. For further enhancing the sustainability of the systems discussed, turning these highly bio‐based alkyd resins into stable aqueous emulsions is a must. © 2020 Society of Chemical Industry

中文翻译：

可持续的刚性酰亚胺构件可作为醇酸树脂中邻苯二甲酸酐的有希望的替代品

由可再生原料合成了新的，高度刚性的基于生物的构建基块。在第一反应步骤中，由柠康酸酐和氨基酸甘氨酸制备酰亚胺。该酰亚胺随后使用Diels-Alder化学方法与山梨酸反应，形成双环结构。然后通过标准的缩聚化学和技术将这种新的，非常刚性的可再生建筑材料掺入醇酸树脂中。通过二甲苯的溶剂浇铸，以初步方式将所得的> 80 wt％的可再生醇酸树脂评估为白色涂料。可再生涂料的性能看起来很有希望，有些甚至优于标准的商业醇酸树脂。为了进一步提高所讨论系统的可持续性，必须将这些高度生物基的醇酸树脂转变为稳定的水性乳液。

更新日期：2020-06-22

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