remarkablepampers and tampons hydrogelsyour idea brilliant

USA en. This restraint in the X-Y plane is the key feature of this test, since with a gsm. JPB2 en. The total time to imbibe the insult is measured. The gel was chopped thoroughly until it had imbibed all of the surrounding fluid and was kept at 40° C. Because the absorbent structures of the present invention are highly absorbent, they are also quite suitable for use in sanitary napkins. In a slow, dropwise manner, a portion of the contents of the addition funnel was added until a 0. Pediatr Dermatol 6 2 — Country of ref document : DE. After heating the mixture to 40° C. The matrix may also be formed from a mixture of wood pulp fluff and the meltblown fibers discussed above. The amount of such synthetic urine actually absorbed by the hydrogel-forming polymer is determined by a procedure which involves use of a synthetic urine solution containing Blue Dextrin so that optical absorbence measurements can be used to calculate the amount of synthetic urine that is not taken up by the hydrogel which forms. In the solution polymerization of partially neutralized acrylic acid, aqueous sodium hydroxide is mixed with a water solution of acrylic acid. After standing at 40° C. Arakawa Chemical Industries, Ltd.

Absorbent articles herein will in general comprise a liquid impervious backing sheet, a liquid pervious, relatively hydrophobic topsheet and an absorbent core comprising the absorbent structure of the present invention positioned between said backing sheet and said topsheet. A more detailed description of sanitary napkins and suitable materials for use therein is found in Duncan and Smith, U. Although the absorbent polymer-containing structures herein are expected to perform well with hydrogel-forming particles having a particle size varying over a wide range, other considerations may preclude the use of very small or very large particles. Particulate, absorbent, polymeric compositions containing interparticle crosslinked aggregates. Cosmetics Development, manufacture and use of cosmetic materials, Kap. European Patent German Patent 3,, Absorbent article with apertured backsheet and fibrous super absorbent material. Of all of these types of cross-linking agents, the most preferred for use herein are the di- or poly-esters of unsaturated mono- or polycarboxylic acids with polyols, the bisacrylamides and the di- or triallyl amines. As compared to conventional hydrophilic fibrous webs, the absorbent structures of this invention have a high absorbent capacity.

Buying options

Ref country code : BE Payment date : Year of fee payment : Porous, absorbent macrostructures of bonded absorbent particles surface crosslinked with cationic amino-epichlorohydrin adducts. The geometric mean diameter is the square root of the product of the major cross sectional axis and the minor cross sectional axis. A second essential element of the hydrogel-forming polymer compositions herein is a cross-linking agent which serves to render the hydrogel-forming polymer compositions of this invention substantially water-insoluble and which in part serves to determine the gel volume, gel strength and extractable polymer content characteristics of the hydrogels formed from the polymer compositions herein. Odor controlling article including a visual indicating device for monitoring odor absorption. In a cooled flask, Note, Example VII's 7 gpd. As the AUL of the superabsorbent material increases the performance as measured by leakage of a diaper employing the superabsorbent material similarly increases. Such a diaper article is especially effective with respect to total fluid capacity and low incidence of diaper failure. Another factor which also appears to favor preparation of preferred. Example No. All of the carboxylate groups are then titrated to pH 2.

Hydrogels: a journey from diapers to gene delivery

• The diaper core is described in greater detail in the following Table I:.
• Example No.
• For purposes of the present invention, extractable polymer levels can be determined by contacting a sample of hydrogel-forming polymer material with a synthetic urine solution for the substantial period of time e.
• When the superabsorbent material is in the form of a fiber having a length to diameter ratio of at least both the length and diameter of the fiber affect gel-blocking.

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. Green Chem 8 5 —

Year of fee payment : 4. Year of fee payment : 8. Year of fee payment : Effective date : 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 pampers and tampons hydrogels and the like. Such hydrogel-forming polymer compositions are substantially water-insoluble, slightly cross-linked, partially neutralized polymers which are prepared from unsaturated polymerizable, pampers and tampons hydrogels, acid group-containing monomers and cross-linking agents. These hydrogel-forming polymer materials, upon imbibing fluids, form hydrogels. Such polymer materials have relatively high gel volume and relatively high gel strength as measured by shear modulus of the hydrogen which forms therefrom. Such polymer materials also contain relatively low levels of extractable polymer material which can be extracted therefrom by contact with synthetic urine, pampers and tampons hydrogels. Preferred hydrogel-forming polymers having these characteristics can be prepared by polymerizing the acid group-containing monomers in their free acid form at relatively low monomer concentrations, preferably using relatively low polymerization temperatures.

Pampers and tampons hydrogels. Cellulose-Based Hydrogel for Personal Hygiene Applications

Kind code of ref document : A1. Effective date : Kind code of ref document : B1. Ref document number : Country of ref document : DE. Date of ref document : Ref country code : GB. Ref legal event code : E. Ref country code : ES. Ref legal event code : FG2A. Country of ref document : ES, pampers and tampons hydrogels.

Publication types

.

Coated water-swellable material comprising hydrogel-forming polymeric core and polymeric coating agent.