التفاصيل البيبلوغرافية
| العنوان: |
Investigation of the Effect of Mono- and Diurethane Units on the Deformation and Strength Properties of Polyurethanimides. |
| المؤلفون: |
Kuznetsov, D. A.1 (AUTHOR) kuznetcovda@hq.macro.ru, Svetlichnyi, V. M.1 (AUTHOR), Didenko, A. L.1 (AUTHOR), Vaganov, G. V.1 (AUTHOR), Elokhovskii, V. Yu.1 (AUTHOR), Kudryavtsev, V. V.1 (AUTHOR), Yudin, V. E.1 (AUTHOR) |
| المصدر: |
Russian Journal of Applied Chemistry. 2020, Vol. 93 Issue 10, p1491-1497. 7p. |
| مصطلحات موضوعية: |
*PROTON magnetic resonance, *DIETHYLENE glycol, *TOLUENE diisocyanate, *TOLUENE |
| مستخلص: |
The effect of synthesis conditions for macrodiisocyanate (temperature, reaction duration, ratio of components) based on poly(diethylene glycol adipate) (Mn = 2.5 × 103) and 2,4-toluene diisocyanate on the composition of the reaction products has been studied. The number of mono- and diurethane units was estimated using proton magnetic resonance spectra. It was found that carrying out the synthesis at 80°C using an eight-fold excess of 2,4-toluene diisocyanate results in the production of a macrodiisocyanate with a diurethane unit content of less than 1 mol %. Based on the isolated macrodiisocyanate, a fusible polyurethanimide, superior in elasticity to the unmodified analogue, was prepared. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
Academic Search Index |