Polyester fibers having wool-like hand and process for producing same

Spun yarn containing crimped bicomponent polyester staple fibers having a hand similar to wool, good processability as staple fibers, a crimp contraction less than 60%, and at least 7 crimp half waves/cm, said fibers of 50 to 80% by weight of one component which comprises crosslinked polyethylene terephthalate having about 0.20 to 0.70 mole per cent of crosslinking agent, based on the moles of terephthalate units, and having an intrinsic viscosity of about 0.45 to 0.60, and 50 to 20% by weight of the second component which comprises a sparingly crosslinked polybutylene terephthalate having about 0.20 to about 0.60 mole percent of cross-linking agent and having a viscosity in the molten state at 260.degree.C. less than 4,000 poises.