C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 3/24 (2006.01) A61L 15/60 (2006.01) C08J 3/075 (2006.01) C08L 101/14 (2006.01)
Patent
CA 2575307
The present invention refers to superabsorbent polymers comprising polymer chain segments. At least a part of the polymer chain segments are crossing- linked to each other through covalent bonds, wherein the covalent bonds are formed directly between polymer chain segments by reaction with a radical former molecules, the radical former molecules being able to form bi-radicals. The present invention refers further to a method of cross-linking superabsorbent polymers which comprises the steps of: a) providing a superabsorbent polymer comprising polymer chain segments, and b) providing radical former molecules, the radical former molecules being able to form bi- radicals upon electromagnetic irradiation, and c) exposing the superabsorbent polymer and the radical former molecules to electromagnetic irradiation, thereby forming direct covalent bonds between the polymer chain segments.
La présente invention concerne des particules polymères superabsorbantes possédant une meilleure réticulation de surface, et leur utilisation dans des articles absorbants. Lesdits polymères superabsorbants de cette invention renferment des segments de chaînes polymères, au moins une partie de ces segments étant réticulée entre eux par le biais de liaisons covalentes directes. En outre, cette invention a pour objet un processus de fabrication de ces particules polymères superabsorbantes.
Flohr Andreas
Lindner Torsten
Dimock Stratton Llp
The Procter & Gamble Company
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