A~tract--Block copolymers polycaprolactam-polyoxyethylene-polycaprolactam were prepared by anionic polymerization of caprolactam activated with ~,~o-dicarbonylcaprolactam-polyoxyethylenes and characterized by the content of the polyether component, crystallinity of the polyamide component and sorpti
N-trimethylsilyl-ϵ-Caprolactam: A multifunctional reagent for the anionic polymerization of ϵ-caprolactam
✍ Scribed by Herbert S.-I. Chao; Peter P. Policastro
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1986
- Tongue
- English
- Weight
- 162 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0887-6258
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The non-activated polymerization of e-caprolactam initiated with the sodium salt of e-caprolactam (CLNa), which was prepared in situ with sodium methoxide, was studied in the temperature range 170 -230 8C and at CLNa concentrations from 0.20 to 1.0 mol-%, and at 190 8C in the presence of 2.0 -10.0 m
In the reaction between the potassium salt of E-caprolactam and N-propionyl-e-caprolactam or N-benzoyl-~-caprolactam in tetrahydrofuran at 25;, the consumption of both reactants and the formation of structures giving ketones by hydrolysis were investigated. Analysis of the data allowed determination