Uniformly dyeable nylon 66 fiber and process for the production thereof

摘要

A nylon 66 fiber capable of being uniformly dyed and having an initial modulus at 20 DEG C. and a relative humidity of 60% of about 15 g/d to about 65 g/d and a relationship of a peak temperature [Tmax( DEG C.)] at peak of dynamic mechanical loss tangent (tan delta ) measured with a frequency of 110 Hz and a peak value of the dynamic mechanical loss tangent [(tan delta )max] represented by the equation: Tmax( DEG C.)