Non-Shrinkable Wool

NON-SHRINKABLE WOOL

Wool which has been treated with a solution of chlorine, and has been largely deprived of felting properties. Chlorinated wool has a greater affinity for dye-stuffs than natural wool and acquires a scroop. In a process only introduced in 1937, wool is made unshrinkable by steeping it for one hour at room temperature in a 2 per cent solution of sulphuryl chloride in white spirit, followed by hydro-extraction and washing out the residual sulphuric and hydrochloric acids.