2-Propenenitrile, polymer with chloroethene 50813-17-7 60842-98-0 9003-00-3 Acropor Acropor AN Acropor AN 200 Acropor AN 450 Acropore Acrylonitrile, polymer with chloroethylene Dynel Dynel NYGL Kanekalon Modacryle SKhN6 Vinyon N