COA of Formula: C7H6N4OIn 2020 ,《Polyurethane hot melt adhesive based on Diels-Alder reaction》 appeared in International Journal of Adhesion and Adhesives. The author of the article were Wu, Meiyin; Liu, Yuan; Du, Pengfei; Wang, Xinling; Yang, Bin. The article conveys some information:
Traditional hot melt adhesives are thermoplastic resins with non-covalent hydrogen bonds. In this letter, a polyurethane hot melt adhesive (CDI-PUR-DA) was synthesized via introducing thermally reversible covalent Diels-Alder adducts into the polyurethane main chain. Results from hydrogen NMR (NMR) anal. and an assessment of rheol. properties demonstrated that CDI-PUR-DA exhibited a much lower viscosity than a traditional hot melt adhesive. The viscosity of the polyurethane decreased to 4 Pa s at 110° due to rupture of Diels-Alder adducts. However, the viscosity returned to its initial value on cooling due to the regeneration of the Diels-Alder adducts. This approach provides a new method for preparing hot melt adhesives.Di(1H-imidazol-1-yl)methanone(cas: 530-62-1COA of Formula: C7H6N4O) was used in this study.
Di(1H-imidazol-1-yl)methanone(cas: 530-62-1) is a coupling agent in the synthesis of dipolar polyamides for nonlinear optical applications and polypeptides. It also used to make β-keto sulfones and sulfoxides, lead sequestering agents, and β-enamino acid derivatives.COA of Formula: C7H6N4O
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem