Spandex and it's preparation with dispersant slurry
Patent #: 6,716,523
Inventor(s): Thomas Edward Carney, Oliver Gutsche and Kai-Volker Schubert
Company: E. I. du Pont de Nemours and Co.
1. Spandex prepared with 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.
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