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Absorbent composition including an uncrosslinked polymer

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  • Title:
    Absorbent composition including an uncrosslinked polymer
  • Author: Reeves, William Grover ; Robertson, William Galey ; Dupuis, Mary Jeanne ; Kepner, Eric Scott ; Jorgenson, Thomas Patrick ; Richmond, Gerald Lee
  • Description: The use of absorbent materials, commonly known as superabsorbents, in disposable absorbent personal care products is known. Such absorbent materials are generally employed in absorbent products such as diapers, training pants, adult incontinence products, and feminine care products in order to increase the absorbent capacity of such products while reducing their overall bulk. Such absorbent materials are generally present in absorbent products in a fibrous matrix, such as a matrix of wood pulp fluff. A matrix of wood pulp fluff generally has an absorbent capacity of about 6 grams of liquid per gram of fluff. The superabsorbent materials generally have an absorbent capacity of at least about 10, preferably of about 20, and often of up to 100 times their weight in a test liquid, such as water or a saline solution. Clearly, incorporation of such absorbent materials in personal care products can reduce the overall bulk while increasing the absorbent capacity of such products. An absorbent composition comprising an uncrosslinked, high molecular weight polymer, wherein the uncrosslinked, high molecular weight polymer is treated by a means to effectively insolubilize the uncrosslinked, relatively high molecular weight polymer such that the absorbent composition exhibits desirable absorbent properties. In particular, the absorbent composition has the ability to absorb a large quantity of liquid. The absorbent composition is useful in disposable absorbent products, such as those disposable absorbent products that are used to absorb bodily liquids. Suitable polymers include polyethylene oxide, poly(acrylic acid), poly(vinyl alcohol), and poly(vinyl pyrrolidone) wherein the polymer has a weight average molecular weight that is greater than about 1,000,000.
  • Creation Date: 2003
  • Language: English
  • Source: USPTO Issued Patents
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