FIELD: chemistry.
SUBSTANCE: stable plasticised composition contains C4-C30-alkyl-pyrrolidone with a straight, branched or cyclic alkyl radical in amount ranging from more than 10 phr to 400 phr (parts per 100 parts of PVC), sufficient for plasticising said PVC to a flexible state. The PVC product is characterised by Shore hardness (scale A) less than 100 and is in form of calendered sheet, plastisol, foam, dispersion, film, siding, tube or pipe.
EFFECT: ensuring prolonged plastification of PVC in order to endow the PVC-based composition with flexibility, ductility or lower melting point for making articles.
19 cl, 3 ex, 4 tbl
