C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 33/02 (2006.01) A61L 15/60 (2006.01) C08J 3/24 (2006.01) C08J 3/28 (2006.01) A61F 13/53 (2006.01)
Patent
CA 2535011
The present invention relates to superabsorbent polymer particles with improved surface cross-linking and their use in absorbent articles. The superabsorbent polymer particles of the present invention comprise a water- absorbing resin and the reaction product of a radiation activatable surface cross-linker wherein the reaction product of the radiation activatable surface cross-linker is present at surfaces of the superabsorbent polymer particles. The radiation acitvatable surface cross-linker comprises at least two radiation activatable groups R, which are covalently bound to each other or to at least one spacer group S. Moreover, the invention relates to a process for making these superabsorbent polymer particles.
L'invention concerne des particules polymères superabsorbantes présentant une réticulation de surface améliorée et l'utilisation de celles-ci dans des articles absorbants. Les particules polymères superabsorbantes selon l'invention comprennent une résine absorbant l'eau et le produit de réaction d'un réticulant de surface activable par rayonnement, présent au niveau des surfaces des particules polymères superabsorbantes. Le réticulant de surface activable par rayonnement comprend au moins deux groupes R activables par rayonnement, liés par covalence l'un à l'autre ou à au moins un groupe espaceur S. De plus, l'invention concerne un procédé de préparation de ces particules polymères superabsorbantes.
Dimock Stratton Llp
The Procter & Gamble Company
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