yourpampers and tampons hydrogelsnot meant

The first step in the process for preparing the preferred. The total amount of polymerized. Absorbent article with apertured backsheet and fibrous super absorbent material. Ref country code : NL Payment date : Year of fee payment : EPB1 en. Absorbent members comprising absorbent material having improved absorbent property. Referring to Figure 13, the fluid flow rate through a sample of absorbent composite, acting as a syphon, was measured as an approximate restraining force of. After 7 minutes, the viscosity of the solution prevented further stirring. In another embodiment of a disposable diaper article, the polymer-containing absorbent structure of the present invention is placed next to the diaper backsheet as an insert underneath an upper layer of the diaper core, which upper layer consists essentially of wood pulp fiber. EPB1 en.

In: Mondal, M. Both of these patents are incorporated herein by reference. Absorbent cores for absorbent diapers having reduced thickness and improved liquid handling and retention performance and comprising a super absorbent polymer. Polyacrylic acid salt water-absorbent resin, production process thereof, and acrylic acid used in polymerization for production of water-absorbent resin. Larsson M, Hjärtstam J, Berndtsson J, Stading M, Larsson A Effect of ethanol on the water permeability of controlled release films composed of ethyl cellulose and hydroxypropyl cellulose. Other examples of suitable hydrophilic fibers are hydrophilized hydrophobic fibers, such as surfactant-treated or silica-treated thermoplastic fibers.

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In a preferred form of the invention, there is provided a disposable sanitary article, most preferably a diaper or incontinence garment, comprising a liquid-impermeable backsheet, a liquid-permeable topsheet coterminous with the backsheet and the absorbent composite structure of the present invention sandwiched therebetween. Absorbent capacity of "gel volume" is a measure of the amount of water or body fluid which a given amount of hydrogel-forming material will absorb. As shown by the graphs of Figures 14, 15, and 22, whole diapers of the general configuration discussed and shown in conjunction with Figure 1, and having absorbent composites made according to the Examples indicated, were tested on infants and the percentage of leaks was determined by the ability of the diaper to contain urine without overflowing onto and soiling outer clothing. Ref legal event code : TP. Superabsorbent carboxyl-containing polymers with odor control properties and method for preparation. The suspension in the Blue Dextrin BD solution is prepared in duplicate. Accordingly, the superabsorbent material can only absorb the liquid if the superabsorbent is capable of performing work sufficient to overcome the restraining force. At this time the gel was heated to 40° C. A polymerization was carried out using the amounts of materials and methods of Example V, except that 0. Sample dimensions, weight and density profile of the sample, amount of composite per sample, as well as the facing and backing materials, must be controlled as appropriate to obtain valid results. Absorbent polymer compositions having high sorption capacities under an applied pressure. Two checks can be made to insure the accuracy of the instantaneous final readout.

Cellulose-Based Hydrogel for Personal Hygiene Applications | SpringerLink

• Such materials are described, for example, in Tsubakimoto et al; U.
• A diaper article according to claim 33 wherein, for said polymer particles, the relationship between gel volume, v, and equilibrium extractable polymer.
• This and other related goals are achieved in an absorbent composite comprising a porous matrix of fibers and superabsorbent material wherein the superabsorbent material, can absorb at least about 24 milliliters of an aqueous solution of sodium chloride containing 0.
• Biomaterials 20 21 —

Personal hygiene product is an inseparable part of urban society. It has given comfort, reliability, and flexibility to sick people, women, and children. The hygiene items containing superabsorbent polymer hydrogels for absorbing large amount of body fluids are the attractive inventions of modern science. The hydrogels swell and imbibe body fluids in the presence of hydrophilic functional groups in the polymeric backbone. Current trend of using acrylate-based superabsorbent in hygiene products is creating significant portion of urban garbage. This pile up is not only shrinking land sites but also harming a lot to the environment due to non-degradability of superabsorbent materials existing in the core of hygiene product. In spite of high water-holding capacity of petrochemical-based superabsorbent polymer, it has a hidden curse on nature of non-degradability and health risk. Cellulose is the most abundant biocompatible matter on this earth which basically originated from plants. It is also naturally occurring long chain polymer that plays a vital role in food cycle in animal kingdom. Besides this cellulose, its derivatives have large application in various fields. As cellulose and its etherified and esterified derivatives have attractive physicochemical and mechanical properties, hydrogels synthesized from cellulose and its derivative can be alternative to synthetic superabsorbent polymer. Cellulose-based hydrogels have found application in various fields like agriculture, biomedical, tissue engineering, wound dressing, pharmaceuticals, etc. Among various applications, some products are available in the market, and some are in research level. Due to fast swelling and other extraordinary properties i. In this chapter, history of using superabsorbent in hygiene product, brief discussion on hydrogel synthesis, health and environment risk related to non-cellulosic absorbent materials, suitability of cellulose-based hydrogels over available acrylate hydrogels, and recommendation for development have been discussed. This is a preview of subscription content, log in via an institution. Book Google Scholar.

Year of fee payment : 4. Year of fee payment : 8. Year of fee payment : Effective date pampers and tampons hydrogels The present invention relates to improved hydrogel-forming polymer compositions which can be used as absorbents in absorbent structures and absorbent articles such as diapers, sanitary napkins and the like, pampers and tampons hydrogels. Such hydrogel-forming polymer compositions are substantially water-insoluble, slightly cross-linked, partially neutralized polymers which are prepared from unsaturated polymerizable, acid group-containing monomers and cross-linking agents.

Pampers and tampons hydrogels. Hydrogels: a journey from diapers to gene delivery

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ARIN et al. Articles in the form of disposable diapers are fully described in Duncan and Baker, U.