Powdered superabsorbents, containing silica, their...

Details Powdered superabsorbents, containing silica, their... Powdered superabsorbents, containing silica, their...

B - Operations, Transporting

01

J

B01J 20/10 (2006.01) A61L 15/18 (2006.01) A61L 15/60 (2006.01) B01J 20/26 (2006.01) C08K 3/36 (2006.01)

Patent

CA 2045425

Hydrophilic, powdered superabsorbents which are insoluble in water, containing by weight, in the dry state, in combination, from 1 to 45% of colloidal silica with an average diameter of non-agglomerated particles comprised between 9 and 50 nm and 99 to 55% of a cross-linked polymer based on free acrylic acid, partially or totally salified by a sodium or potassium, preparation process and use notably for the absorption of aqueous fluids.

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