Dispersant slurries for making spandex

A process for preparing spandex comprising the steps of:

• (A) providing a dispersant slurry consisting essentially of
• (a) 10-78 wt %, based on the total weight of the dispersant slurry, of an inorganic particulate;
• (b) 2-50 wt %, based on the inorganic particulate, of a dispersant soluble in the liquid of component (c) selected from the group consisting of
• (i) phosphated block poly(alkylsiloxane)-poly(alkyleneether) alcohols;
• and
• (ii) aromatic- or alkylaromatic-terminated phosphated poly(alkyleneether) alcohols;
• and
• (c) a liquid selected from the group consisting of dimethylsulfoxide, tetramethylurea and amides;
• (B) milling the slurry until the particulate has a median particle size, based on volume distribution, of ≦5 microns;
• (C) adding the slurry to a solution of polyurethane in a spinning solvent to form a spinning solution;
• and
• (D) spinning the spinning solution obtained in step (C) to form spandex.