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- W2078663710 abstract "The uncatalysed and catalysed polymerization of a hydroxyl-terminated polybutadiene with toluene diisocyanate has been studied in toluene solution at four different temperatures. The rate constants (k1, k2) and the activation parameters (Ea1, Ea2, ΔS1‡, ΔS2‡) for the isocyanate groups in the 4 and 2 positions were calculated. It was found that the catalysts enhance the reactivity of the 2 position isocyanate group rather than the 4 position isocyanate group. It was also found that diethylcyclohexylamine has higher selectivity than dibutyltin dilaurate to enhance the reactivity of the isocyanate group in the 2 position. The effect of solvent has also been studied. The reactivity decreased in the following order; benzene = toluene > chlorobenzene > dioxane > nitrobenzene. © 1993 John Wiley & Sons, Inc." @default.
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- W2078663710 date "1993-12-05" @default.
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- W2078663710 title "The kinetics of the polymerization reaction of toluene diisocyanate with HTPB prepolymer" @default.
- W2078663710 doi "https://doi.org/10.1002/app.1993.070500915" @default.
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