Absorber forming crossbridge upon absorbing
AssigneeUni-Charm Corporation
InventorsHisashi Takai, Takayoshi Konishi, Masashi Nakashita
Life of this patent
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Abstract
Provided are an absorbent and an absorptive article containing the absorbent which has excellent water absorbability and leakage prevention ability, and has an intent to achieve reductions in the weight and thickness of an absorptive article. The absorbent comprises a polysaccharide that causes a gelation reaction in the presence of a polyvalent metal ion and a source of the polyvalent ion, in which the polyvalent ion is supplied simultaneously with or after dissolution and swelling of the polysaccharide. The absorptive article containing the absorbent can achieve excellent water absorbability and leakage prevention ability and thus reductions in the weight and thickness as the absorptive article.
Claims9
An absorbent comprising at least a polysaccharide capable of being thickened in a presence of a polyvalent metal ion and a substance capable of supplying the polyvalent metal ion when contacted with a body fluid, wherein the polysaccharide is arranged at a position where the polysaccharide is brought into contact with a body fluid before the substance capable of supplying the polyvalent metal ion is brought into contact with the body fluid and the substance capable of supplying the polyvalent metal ion is subjected to one of a coating or microcapsulation treatment for adjusting a dissolution rate of the polyvalent metal ion upon contact with a body fluid.
Dependencies are inferred from the claim text.