METHOD OF PREPARING OLIGOMERIC POLYETHERACYLLACTAMS HAVING REDUCED CONTENT OF BEACYLLACTAM

FIELD: chemistry of polymers. SUBSTANCE: method involves preparation of oligomeric polyetheracyllactams containing, as admixture, less than 0.5 wt % bis- acyllactam of formula: wherein Z is polyoxyalkylene polyoxyl with molecular weight from 2000 to 7000 with functionality of 2 or 3 wherein Ar is 1,...

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Hauptverfasser:	FROLOV V.G, DEMINA M.I, ZEJBERLIKH F.N, GLADKOVSKIJ G.A
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	FIELD: chemistry of polymers. SUBSTANCE: method involves preparation of oligomeric polyetheracyllactams containing, as admixture, less than 0.5 wt % bis- acyllactam of formula: wherein Z is polyoxyalkylene polyoxyl with molecular weight from 2000 to 7000 with functionality of 2 or 3 wherein Ar is 1,3 or 1,4- phenylene, n is 2 or 3, d is 5 or 3; polyol to monofunctional alcohol to dichloroanhydride to lactam ratios of 1: (0.05-0.2):(1.6-1.9):(0.4-0.8). If weight ratio of biacyllactam in polyetheracyllactam is less than 0.5%, impact viscosity of the resulting of polycaproamide does not decrease and bis-terephthalylcaprolactam does not precipitate. EFFECT: more efficient preparation method. 4 tblo