Pulverulent polymers crosslinked on the surface

Details Pulverulent polymers crosslinked on the surface Pulverulent polymers crosslinked on the surface

2007-01-02

2007-01-02

Kiliman, Leszek (Department: 1773)

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

C428S407000, C525S381000, C525S383000, C525S384000, C525S385000

Reexamination Certificate

active

10260313

ABSTRACT:
The present invention relates to a pulverulent polymer post-crosslinked on the surface and absorbing water or aqueous liquids, synthesised from polymerised, optionally pre-crosslinked monomers containing partially neutralised carboxyl groups. The present invention also relates to a process for the post-treatment of the aforementioned polymers and the use of a solution of at least one salt of an at least trivalent cation for restoring the gel permeability of the aforementioned polymers that have been damaged by mechanical action.

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