Acrylic fiber acquires an eminent position in the family of synthetic fibres. It replaces wool in the major applications, particularly in hand knitting and hosiery garments. The majority of knitting yarns which goes into the manufacture of pullovers, sweaters, socks, etc. Blankets and carpets are the other application where acrylic fibre competes with wool because of its high elasticity, colour brilliance, ease of washing, resistance to pilling and good light and colour fastness. Because of these properties and also due to the ease with which modification can be made during synthesis, spinning and finishing, acrylic fibres have experienced tremendous growth.