Untersuchungen zur kinetik der polykondensation von sebacoylchlorid mit α,ω-alkandiolen

✍ Scribed by Ueberreiter, Kurt ;Engel, Michael

• Publisher: Wiley (John Wiley & Sons)
• Year: 1977
• Weight: 163 KB
• Volume: 178
• Category: Article
• ISSN: 0025-116X
• DOI: 10.1002/macp.1977.021780812

✦ Synopsis

Abstract

The kinetics of polycondensation of sebacoyl chloride with α,ω‐alkane dioles HO—(CH~2~)~n~—OH (5⩽n⩽10) in dioxane can be described by a second order law related to the functional groups. The rate constants at a given temperature have all the same value within the accuracy of the measurements. The mean values of the rate constants are k=0,63·10^−3^mol^−1^ls^−1^ (T=299,9 K),k=1,19·10^−3^mol^−1^ls^−1^ (T=312,9 K), and k=2,98·10^−3^mol^−1^l s^−1^ (T=331,8 K). Thus, these polycondensation reactions are independent of the chain length of the α,ω‐dioles. The mean activation energy is E~A~=41 kJ mol^−1^ and the pre‐exponential factor is A=8,5·10^×3^ mol^−1^ls^−1^.