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Application filed by Vysoka Skola Chem TechfiledCriticalVysoka Skola Chem Tech
Priority to CS22889ApriorityCriticalpatent/CS274841B2/en
Publication of CS274841B2publicationCriticalpatent/CS274841B2/en
The solution concerns a method of preparation of block copolymers of ε-caprolactam by anionic polymerization initiated by alkaline salts of ε-caprolactam or their precursors, in presence of 0.1 to 40 percent by weight, optimally from 1 to 15 percent by weight of low-molecular-weight polymers with hydroxyl, carboxyl and amino terminal functional groups, and is activated by monofunctional isocyanates or their cyclic compounds, while the polymerization proceeds for a period of 1 to 200 minutes at a temperature of 130 to 260 degrees C.
CS22889A1989-01-131989-01-13Method of epsilon-caprolactam's block copolymers preparation
CS274841B2
(en)
Zahnärztliche Zusammensetzungen, Verfahren zur Herstellung von geformten, zahnärztlichen Artikeln via "photoiniferte Polymerisation" von zahnärztlichen Zusammensetzungen und dadurch erzeugte geformte, zahnärztliche Artikel.