Wikipedia
PolyAMPS
PolyAMPS, or poly(2-acrylamido-2-methyl-1-propanesulfonic acid)® (Trademark of The Lubrizol Corporation), is an organic polymer. It is water-soluble, forms gels when cross linked, and acts as a strong anionic polyelectrolyte. It can be used for ion exchange resins. It can form hydrogels.