Surface treatment process for improving dispersibility of an...

Details Surface treatment process for improving dispersibility of an... Surface treatment process for improving dispersibility of an...

A - Human Necessities

61

Q

252/18

A61Q 15/00 (2006.01) A61K 8/81 (2006.01) A61L 15/60 (2006.01) A61Q 1/12 (2006.01)

Patent

CA 1061770

STUART H. GANSLAW HOWARD G. KATZ SURFACE TREATMENT PROCESS FOR IMPROVING DISPERSIBILITY OF AN ABSORBENT COMPOSITION, AND PRODUCT THEREOF ABSTRACT OF THE DISCLOSURE The aqueous dispersibility of a water-absorbent composition of matter is improved by a surface treatment which ionically complexes the surface thereof to a moderate degree. A dispersion is formed comprising a water- absorbent composition of matter based on an anionic poly- electrolyte, at least one polyvalent metal cation, and a dispersing medium in which the composition of matter is substantially insoluble. The dispersion is maintained within a given temperature range for a period of time sufficient to ionically complex the exposed surface of the composition of matter, and the dispersing medium is then removed. The product is characterized by a linkage density which is greater at the surface thereof than in the interior thereof and by the presence of ionic linkages at the surface thereof.

247713

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