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US 2003/0125684 A1Published application
Absorbent composition containing transitional crosslinking points
AssigneeKimberly-Clark Worldwide, Inc.
InventorJian Qin
Life of this patent
Estimating the term…
Abstract
A water insoluble, water swellable absorbent composition exhibiting a free swell absorbency of at least 15 g/g and an Absorbency Change of greater than or equal to 15% upon saturation. The absorbent composition includes both permanent crosslinking points and transitional crosslinking points. The absorbent composition has a high free swell capacity as well as a high absorbency under load.
Claims68
An absorbent composition comprising:
- a superabsorbent material having a plurality of permanent crosslinking points and a plurality of transitional crosslinking points, the superabsorbent material exhibiting a free swell absorbency of at least 15 g/g and an Absorbency Change of at least 15% upon saturation.
An absorbent composition comprising:
- an acidic, water-swellable, water insoluble polymer having at least about 50 molar percent of its acidic functional groups in free acid form;
- and
- a basic neutralization agent;
- wherein the absorbent composition exhibits a free swell absorbency of at least 15 g/g and an Absorbency Change of greater than or equal to 15% upon saturation.
1 more element
An absorbent composition comprising:
- a basic, water-swellable, water insoluble polymer having at least about 50 molar percent of its basic functional groups in free base form;
- and
- an acidic neutralization agent;
- wherein the absorbent composition exhibits a free swell absorbency of at least 15 g/g and an Absorbency Change of greater than or equal to 15% upon saturation.
1 more element
Dependencies are inferred from the claim text.