METHOD OF OBTAINING A LIQUID SYSTEM FOR POLYMERISATION OF LACTAME, APPLICATION OF SUCH SYSTEM AND LACTAME POLYMERISATION PROCESS

摘要

Production of a storage stable liquid system (I) for use in the polymerisation of lactams is new. The following steps are performed under temperature control, under inert gas and exclusion of moisture in a liquid, polar aprotic solvent: (i) dissolution of at least one lactam in a solvent; (ii) addition of a strong base and conversion of the lactam to a lactamate; (iii) addition of an activator and reaction with the lactamate; and (iv) cooling of the product solution.