The following materials of analytical grade were used as received except macrodiols which were dehydrated in an oven at 80 °C prior to use; PPG (number-average molecular weight, Mn= 425, 1000, 2000, and 2700 g/mol−1 from (Sigma-Aldrich, St. Louis, MO, USA, B), HTPB (Mn = 2912 g/mol−1) BD (from Acros Organics, Geel, Belgium) [14 (link)]. H12MDI (Sigma-Aldrich, St. Louis, MO, USA), triethyl amine, TEA (Sigma-Aldrich, St. Louis, MO, USA), Dimethylol propionic acid, DMPA (Sigma-Aldrich, St. Louis, MO, USA), & Dibutyltin dilaurate DBTDL (Sigma-Aldrich, St. Louis, MO, USA.) [18 (link)].
H12mdi
Manufactured by Merck Group
Sourced in Belgium
The H12MDI is a laboratory equipment product offered by Merck Group. It is a multi-functional device designed for various laboratory applications. The core function of the H12MDI is to facilitate precise measurements and data collection.
Automatically generated - may contain errors
2 protocols using h12mdi
1
Polyurethane Synthesis Using Macrodiols
2
Polyurethane Synthesis from Isocyanates
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4,4′-methylenebis(phenyl isocyanate) (C15H10N2O2, MDI, Sigma Aldrich, St. Louis, MO, USA) was distilled before use. Poly(tetrahydrofuran) (PTMO) (1400 g mol−1, Sigma Aldrich) was degassed under vacuum at 60 °C for 12 h. 2,2-bis(hydroxymethyl) propionic acid (DHMPA, Sigma Aldrich), hexamethylene diisocyanate (C8H12N2O2, HMDI, Sigma-Aldrich) and 4,4′-Methylenebis(cyclohexyl isocyanate) (C15H22N2O2, H12MDI, Sigma-Aldrich), were used as received. The solvents dimethyl formamide (DMF, Sigma-Aldrich) and 2-pentanone (PENT, Sigma-Aldrich) were used as received.
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