963 results about "Superabsorbent polymer" patented technology

An absorbent article is disclosed having a topsheet, a backsheet joined with the topsheet, an absorbent core disposed between the topsheet and the backsheet, and a synthetic superabsorbent polymer derived from a first renewable resource via at least one intermediate compound, wherein said superabsorbent polymer exhibits a defined Saline Flow Conductivity value and Absorption Against Pressure value. Alternately, an absorbent article is disclosed having a synthetic polyolefin derived from a first renewable resource via at least one intermediate compound. The synthetic polyolefin exhibits defined performance characteristics making the polyolefin particularly useful in certain components of the absorbent article. Methods for making the aforementioned absorbent articles are also disclosed.

Device for vacuum therapy of wounds comprising a cover material (1) that is impermeable to air, and a means for functional connection of the wound space (4) with a source of vacuum outside the cover material, and at least one activated absorbent/rinsing body (3) that contains at least one superabsorbent polymer.

Absorbent articles and processes for making absorbent articles are provided. The process includes spraying onto a fibrous web a blend containing superabsorbent polymer particles, superabsorbent forming monomer, initiator and water, and subjecting the web to polymerization conditions. The resulting web is useful as an absorbent article particularly in disposable hygiene products.

The invention relates to absorptive, crosslinked polymers which are based on partly neutralized, monoethylenically unsaturated monomers carrying acid groups, and have improved properties, in particular in respect of their capacity for transportation of liquids in the swollen state, and which has a high gel bed permeability and high centrifuge retention capacity.

A particulate material composition of superabsorbent polymer particles, wherein less than about 60% by weight of the superabsorbent polymer particles will pass through a U.S. Standard 50 mesh sieve. The composition has anti-caking properties and also reduced dusting. The composition can be produced by mixing the superabsorbent polymer particles with an inorganic powder, such as clay.

The embodiments provide a method for treating an intervertebral disc having a nucleus pulposus and an annulus fibrosis, using one or more superabsorbent polymers. Additionally, the embodiments provide a method for bulking up an intervertebral disc having a nucleus pulposus and an annulus fibrosis, using one or more superabsorbent polymers. The methods comprise introducing an amount of the superabsorbent polymers into the intervertebral disc space without removing nucleus pulposus or annulus fibrosis material.

An absorbent article having an absorbent core comprising a core wrap (16, 16′) enclosing an absorbent material (60), which comprises at least 80% of superabsorbent polymers (“SAP”) by weight. The absorbent core further comprises at least one channel (26, 26′) and an acquisition-distribution system (ADS) between the topsheet and the absorbent core, the ADS comprising one, two or more layers wherein the ADS does not comprise a layer comprising at least 50% by weight of synthetic fibers and having a basis weight above 150 gsm.

An absorbent article having opposite longitudinally extending sides and opposite laterally extending ends extending between the longitudinally extending sides is provided. The absorbent article includes a chassis including a topsheet and a backsheet joined to the topsheet. The chassis has a front waist region, a back waist region, a crotch region located between the front waist region and the back waist region, a longitudinal axis extending through the front and back waist regions and a lateral axis substantially perpendicular to the longitudinal axis. A barrier cuff strip extends in a longitudinal direction from the front waist region to the back waist region along the topsheet. The barrier cuff strip includes a front end at the front waist region, a back end at the back waist region and proximal and distal edges connecting the front end and the back end. The barrier cuff strip distal edge is attached to the topsheet at a cuff end bond region that has an outer bond edge at one of the front and back waist regions and an inner bond edge spaced longitudinally from the outer bond edge. An absorbent core is disposed between the topsheet and the backsheet. The absorbent core includes an absorbent layer including an absorbent material comprising a superabsorbent polymer material wherein at least about 60 percent by weight of the absorbent material is the superabsorbent polymer material. A longitudinal distance from the inner bond edge to the laterally extending side at the one of the front and back waist regions is about ½ or more of a longitudinal length of the one of the front and back waist regions.

An absorbent article has an absorbent member 1 containing a web 2 of hydrophilic long fibers. The long fibers have a crimp percentage of 40% to 90% and are oriented in the planar direction of the absorbent member 1. The web 2 has a superabsorbent polymer embeddedly supported therein. The absorbent member 1 preferably has two or more webs 2 and a superabsorbent polymer layer 3 sprinkled between the webs 2, with part of the superabsorbent polymer being embeddedly supported in the web 2.

An absorbent core (28) and an absorbent article (20) comprising the core. The absorbent core comprises a core wrap (16, 16′) enclosing an absorbent material (60), wherein the absorbent material comprises at least 80% of superabsorbent polymers (“SAP”) by weight of the absorbent material. The absorbent core has a Relative Wet Caliper Increase (RWCI) after compression of less than 10% as measured by the Wet Caliper And Compression Force (WCACF) Test as described herein, and wherein the core wrap (16, 16′) is at least partially sealed so that substantially no absorbent material leaks out of the core wrap while performing the WCACF Test.

An absorbent article is provided, including a barrier layer, a cover layer extending substantially parallel to the barrier layer, and a superabsorbent polymer interposed between the cover layer and the barrier layer. The superabsorbent polymer is adhered to the article in a pattern configured to distribute fluid in the absorbent article, wherein at least one portion extending essentially completely across the absorbent article is substantially devoid of the superabsorbent polymer.

A disposable diaper is provided comprising a liquid permeable topsheet, a liquid impermeable backsheet, and a liquid retentive absorbent member interposed between the topsheet and the backsheet. The absorbent member comprises, in admixture, a superabsorbent polymer A having a rate of absorption of 8 g/30 sec/0.3 g or more measured by DW method and a superabsorbent polymer B having a rate of absorption of 5 g/30 sec/0.3 g or less measured by DW method at a polymer A/polymer B weight ratio of 90/10 to 10/90. The admixture optionally further comprises fluff pulp in an amount of from 0 to 30% by weight.

An absorbent article comprising a liquid permeable topsheet, a liquid impermeable backsheet, and an absorbent core comprising a core wrap enclosing absorbent material comprising a superabsorbent polymer. The absorbent core comprises one or more substantially absorbent material free areas through which a portion of the top side of the core wrap is attached to a portion of the bottom side of the core wrap. The top side of the core wrap is at least colored in the portion attached by one or more core wrap bonds to the portion of the bottom side of the core wrap so that the color of the top side of the core wrap forms one or more colored areas visible from the exterior of the article. When the absorbent material swells, the core wrap bonds at least partially opens and the colored areas become less visible from the exterior of the article.

A superabsorbent polymer comprising a delayed absorption superabsorbent polymer having a free water absorbency property of absorbing less than about 3 grams of aqueous saline per gram of superabsorbent polymer in about 6 seconds, for a full particle size distribution of superabsorbent polymer ranging from about 40 micrometers to about 890 micrometers.

Composite particles suitable for use as a clumping animal litter according to one embodiment include an absorbent material, and a superabsorbent polymer coupled to the absorbent material, where a ratio of rates of absorption of the superabsorbent polymer and absorbent material is at least about 1:1. Composite particles suitable for use as a clumping animal litter according to another embodiment include an absorbent material and a superabsorbent polymer coupled to the absorbent material, where the superabsorbent polymer has a greater Jenkins osmotic potential than the absorbent material.

Skin irritation, such as diaper rash, appearing when the skin is allowed to remain in contact with proteolytic enzymes found in feces is prevented by inactivating the fecal proteolytic enzymes by contact with organophilic clays. The organophilic clays are applied to the skin in areas likely to come into contact with feces or to garments such as diapers. A composition suitable for practicing the method of the invention comprises an amount of an organophilic clay effective to inactivate irritating fecal proteolytic enzymes dispersed in a pharmaceutically acceptable non-toxic dermatological vehicle. A fabric incorporating organophilic clay, preferably dispersed in a matrix of a superabsorbent polymer is useful for preparing diapers for infants that can help to prevent skin irritation by fecal enzymes.

The invention relates to absorptive, crosslinked polymers which are based on partly neutralized, monoethylenically unsaturated monomers carrying acid groups wherein the absorptive crosslinked polymer may be coated with a thermoplastic polymer, and have improved properties, in particular in respect of their capacity for transportation of liquids in the swollen state, and which has a high gel bed permeability and high centrifuge retention capacity.

A color-stable superabsorbent polymer having long-term color stability, and methods of manufacturing the polymer, are disclosed. The superabsorbent polymer is prepared using a sulfinic acid derivative, like 2-hydroxy-2-sulfinatoacetic acid, a salt thereof, or a mixture thereof, as the reducing agent in a polymerization initiator system for the preparation of a superabsorbent polymer from monomers. The resulting superabsorbent polymer resists color degradation during periods of extended storage, even at an elevated temperature and humidity.

Surface-crosslinked superabsorbent polymer (SAP) particles having a clay in the vicinity of the surfaces of the SAP particles a clay are disclosed. The clay is added to SAP particles during surface crosslinking to substantially reduce the generation, and recycling, of SAP fines, and to provide SAP particles having an improved acquisition rate of fluids and an improved permeability of a fluid through the swollen SAP particles. Diaper cores and absorbent articles containing the surface crosslinked SAP particles also are disclosed.

An absorbent material is disclosed, containing at least about 30 weight percent of a superabsorbent polymer, a thermoplastic polymer binder resin, and about 0.1 to about 10 weight percent water. The absorbent material absorbs deionized water to at least about 70 percent of maximum capacity within about 20 minutes after exposure to the deionized water. The method of making the absorbent material includes combining binder resin and absorbent polymer in a twin screw extrusion mechanism, compounding and driving the composition toward exit openings, extruding the composition through the exit openings, and preferably rapidly cooling the extrudate with non-liquid quenching means. The quenched or non-quenched extrudate may be made in the form of a pellet, film, or fibrous strand.

An absorbent composite sheet mainly consisting of a fibrous substrate web, a super absorbent polymer, and a bonding component bonding both of them with each other, wherein (a) the fibrous substrate web is a non-bonded web with a few of the constituent fibers bonded with each other, (b) a liquid mixture system is used of a medium mainly consisting of the super absorbent polymer and the bonding component, (c) a composite web is formed by adding the liquid mixture system to the fibrous substrate web, and (d) a liquid component is separated from the composite web so that fixing of the super absorbent polymer to the fibrous substrate web and bonding of the webs of the fibrous substrate web with one another are carried out at the same time. Methods of manufacturing such absorbent composite sheets are also provided.