A composition of polyolefin tingivel, composition of polypropylene tingivel and process to improve the characteristic of dyeing polyolefins

摘要

Polyolefin compositions are described which can be dyed by conventional dyeing techniques. Such polyolefins comprise a blend of (A) a polyolefin and (B) a dye-receptive amount of at least one metal sulfonate which is soluble in the polyolefin when melted, and which sulfonates are characterized by the formulae IMAGE (I) (R'ArSO3)xM (II) wherein R is an aliphatic group, R' is an aliphatic group containing at least about 8 carbon atoms, Ar is an aromatic group, M is an alkali or alkaline earth metal, n is at least 1, y is equal to 1 when M is an alkali metal and 1/2 when M is an alkaline earth metal, and x is equal to the valence of M. The preferred sulfonates are those represented by Formula (I) and especially wherein M is sodium. In particular, it has been found that films and fibers prepared from such polyolefin composition, and more particularly polypropylene compositions, are readily dyed with common dyes to provide deep shades and fastness.