ABA block copolymers, where A and B represent polyamide and polystyrene segments respectively, were prepared by the anionic polymerization of caprolactam activated with polystyrene-bisacyllactams. Under mild polymerization conditions (in a solvent at 120°), very pure copolymers were obtained contain
The preparation of copolymers with polydimethylsiloxane and polycaprolactam blocks by the anionic polymerization of caprolactam
✍ Scribed by Jaroslav Stehlíček; Zdeněk Tuzar; Krzysztof Kazmierski; Jan Šebenda; Julian Chojnowski
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 346 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0014-3057
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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
## Abstract Anionic polymerization of ϵ‐caprolactam was initiated with the potassium salt of ϵ‐caprolactam and accelerated with phenyl isocyanate, toluylene diisocyanate, 4,4′‐diphenylmethane diisocyanate, some derivatives of these isocyanates (urethanes, ureas, and allophanates), or combinations o