Synthesis and characterization of free-isocyanate polyurethane as renewable coating materials

10th Joint Conference on Chemistry

Saputra, O.A.^1 ; Apriany, K.^1 ; Putri, F.R.^1 ; Firdaus, M.^1

Department of Chemistry, Faculty of Mathematic and Natural Science, Sebelas Maret University, Jl. Ir. Sutami 36A, Surakarta, Indonesia^1

关键词: Cis-2-Butene-1 ,4-diol;    Coating material;    Diethyl carbonates;    Ethylene diamine;    FTIR spectroscopy;    Ftir techniques;    Green synthesis;    Synthesis and characterizations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/107/1/012048/pdf
DOI  :  10.1088/1757-899X/107/1/012048

来源: IOP

【 摘 要 】

Green synthesis of diethyl ethane-1,2-diyldicarbamate (M1) as starting dimer of free-isocyanate polyurethane from an excess of diethyl carbonate and ethylene diamine catalyzed by TBD (1,5,7-triazabicyclo-[4,4,0]dec-5-ene) at 80 °C for 4 hours has been carried out. The product has high yield and purity up to 92% and 99,18%, respectively. The product was obtained in the form of rod-shaped white crystals and characterized with1H-NMR,13C-NMR and FTIR spectroscopy. Polyurethane (P1) has successfully synthesized via polycondensation methods by reacting of M1 with cis-2-butene-1,4-diol. This reaction also catalyzed by TBD organo catalyst. P1 chemical structure has been confirmed using1H-NMR and FTIR techniques.