Abstract: A method for degrading crosslinked superabsorbent fibers (SAF) into soluble polymers is disclosed. Degradation is achieved with an oxidative water-soluble salt comprising at least one cation and at least one anion.

Abstract: Superabsorbent fibers (SAF) in a feed stream is converted into soluble polymers in an extensional flow device. The total energy used to degrade the SAF into soluble polymers is less than about 50 MJ/kg SAF.

Abstract: An absorbent core, for use in an absorbent article, including a core wrap enclosing an absorbent material and including superabsorbent polymer particles. The core wrap includes a top side and a bottom side, and the absorbent core includes one or more area(s) substantially free of absorbent material through which the top side of the core wrap is attached to the bottom side of the core wrap, so that when the absorbent material swells the core wrap forms one or more channel(s) along the area(s) substantially free of absorbent material. The superabsorbent polymer particles have a time to reach an uptake of 20 g/g (T20) of less than 240 s as measured according to the K(t) test method.

Abstract: An absorbent core including one or more nonwoven webs with superabsorbent fibers. The superabsorbent fibers may include one or more surfactants. The one or more nonwoven webs have an amount of extractables of less than 20 weight-%, and/or an amount of titratable soluble of less than 20%. The nonwoven webs have a capacity of at least 7 g/g. The absorbent core may be used in an absorbent article.

Abstract: A method for degrading crosslinked superabsorbent fibers (SAF) into soluble polymers is disclosed. Degradation is achieved with an oxidative water-soluble salt comprising at least one cation and at least one anion.

Abstract: A method for making water-absorbing polymer particles is provided and includes providing crosslinkers, polymerizable monomers and inorganic solid particles. The average closest distance between two neighboring crosslinkers (RXL) in a water-absorbing polymer particle for a specific X-load of the water-absorbing polymer particle is calculated via the formula below: Rxl = ( ( 1 rho_dry + x_L rho_liq ) N A · ? i ? w_xl i Mr_CXL i ) 1 3 ( I ) with x_L being the amount of liquid absorbed in the water-absorbing polymer particle in g liq/g water-absorbing polymer particle, rho_liq being the density at room temperature of the fluid that swells the water-absorbing polymer particle (generally saline of 0.

Abstract: An absorbent core, for use in an absorbent article, including a core wrap enclosing an absorbent material and including superabsorbent polymer particles. The core wrap includes a top side and a bottom side, and the absorbent core includes one or more area(s) substantially free of absorbent material through which the top side of the core wrap is attached to the bottom side of the core wrap, so that when the absorbent material swells the core wrap forms one or more channel(s) along the area(s) substantially free of absorbent material. The superabsorbent polymer particles have a time to reach an uptake of 20 g/g (T20) of less than 240 s as measured according to the K(t) test method.

Abstract: An absorbent core (28), for use in an absorbent article, comprising a core wrap (16, 16?) enclosing an absorbent material (60) comprising superabsorbent polymer particles. The core wrap comprises a top side (16) and a bottom side (16?), and the absorbent core comprises one or more area(s) (26) substantially free of absorbent material through which the top side of the core wrap is attached to the bottom side of the core wrap, so that when the absorbent material swells the core wrap forms one or more channel(s) (26?) along the area(s) (26) substantially free of absorbent material. The superabsorbent polymer particles have a time to reach an uptake of 20 g/g (T20) of less than 240 s as measured according to the K(t) test method.

Abstract: Agglomerated superabsorbent polymer particles is provided and obtained by a method including the steps of (a) providing precursor superabsorbent polymer particles having a first mass average particle size 1mAvPS, a first particle diameter “1D10” of not less than 30 ?m and a first particle diameter “1D90”, (b) mixing the precursor superabsorbent polymer particles with a solution including polymerizable monomers and/or oligomers, or crosslinkable polymers, and (c) polymerizing the mixed solution if the solution includes polymerizable monomers and/or oligomers or crosslinking the mixed solution if the solution includes crosslinkable polymers. The agglomerated superabsorbent polymer particles have a second particle diameter “2D10” and a second particle diameter “2D90”.

Abstract: A method for making surface-coated water-absorbing polymer particles in a microfluidic device is provided. The microfluidic device includes a first microfluidic channel conveying precursor water-absorbing polymer particles, a second microfluidic channel conveying a first coating solution, a third microfluidic channel conveying water-absorbing polymer particles coated with the first coating solution, a fourth microfluidic channel conveying a first non aqueous liquid. An absorbent article includes the surface-coated water-absorbing polymer particles obtained via the method herein is also provided.

Abstract: A method for making water-absorbing polymer particles is provided and includes providing crosslinkers, polymerizable monomers and inorganic solid particles. The average closest distance between two neighboring crosslinkers (RXL) in a water-absorbing polymer particle for a specific X-load of the water-absorbing polymer particle is calculated via the formula below: Rxl = ( ( 1 rho_dry + x_L rho_liq ) N A · ? i ? ? w_xl i Mr_CXL i ) 1 3 ( I ) with x_L being the amount of liquid absorbed in the water-absorbing polymer particle in g liq/g water-absorbing polymer particle, rho_liq being the density at room temperature of the fluid that swells the water-absorbing polymer particle (generally saline of 0.

Abstract: Superabsorbent polymer particles are provided and include clay platelets with edge modification and/or surface modification. The superabsorbent polymer particles include one, or more than one area(s) with clay platelets and one, or more than one area(s) substantially free of clay platelets. The total volume of the area(s) substantially free of clay platelets is higher than the total volume of the area(s) with clay platelets.

Abstract: Agglomerated superabsorbent polymer particles are provided and obtained by a method including the steps of: (a) providing precursor superabsorbent polymer particles having a first mass average particle size 1mAvPS, (b) mixing the precursor superabsorbent polymer particles with a solution, and (c) polymerizing the mixed solution if the solution includes polymerizable monomers and/or oligomers or crosslinking the mixed solution if the solution includes crosslinkable polymers. The solution includes (i) homogeneously dispersed therein, clay platelets with opposing basal platelet surfaces and platelet edges; (ii) one or more surface modification compound(s) and/or edge modification compound(s); and (iii) polymerizable monomers and/or oligomers, or (iv) crosslinkable polymers. The agglomerated superabsorbent polymer particles have a second mass average particle size 2mAvPS which is at least 25% greater than the first mass average particle size 1mAvPS.

Abstract: A method for making water-absorbing polymer particles is provided and includes a first aqueous polymerization solution including crosslinkers, polymerizable monomers and/or oligomers and inorganic solid particles, and a second aqueous solution including inorganic solid particles, crosslinkers and either polymerizable monomers and/or oligomers, or crosslinkable polymers. The average closest distance between two neighboring crosslinkers (RXL) from the first aqueous polymerization solution or from the second aqueous solution for a specific X-load of the water-absorbing polymer particle is calculated via the formula below: Rxl = ( ( 1 rho_dry + x_L rho_liq ) N A · ? i ? w_xl i Mr_CSL i ) 1 3 .

Abstract: An absorbent core for use in an absorbent article is provided and comprises a core wrap enclosing an absorbent material, the absorbent material comprising superabsorbent polymer particles. The superabsorbent polymer particles represent less than 85% by weight based on the total weight of the absorbent material. The core wrap comprises a top side and a bottom side, the absorbent core comprises one or more area(s) substantially free of absorbent material through which the top side of the core wrap is attached to the bottom side of the core wrap, so that when the absorbent material swells the core wrap forms one or more channel(s) along the area(s) substantially free of absorbent material. The superabsorbent polymer particles have a value of Absorption Against Pressure (AAP) of at least 22 g/g according to the Absorption Against Pressure Test Method and a bulk density of at least 0.5 g/ml according to the Bulk Density Test Method.

Abstract: An absorbent core (28), for use in an absorbent article, comprising a core wrap (16, 16?) enclosing an absorbent material (60) comprising superabsorbent polymer particles. The core wrap comprises a top side (16) and a bottom side (16?), and the absorbent core comprises one or more area(s) (26) substantially free of absorbent material through which the top side of the core wrap is attached to the bottom side of the core wrap, so that when the absorbent material swells the core wrap forms one or more channel(s) (26?) along the area(s) (26) substantially free of absorbent material. The superabsorbent polymer particles have a time to reach an uptake of 20 g/g (T20) of less than 240 s as measured according to the K(t) test method.

Abstract: A method for making water-absorbing polymer particles is provided and includes providing crosslinkers, polymerizable monomers and inorganic solid particles. The average closest distance between two neighboring crosslinkers (RXL) in a water-absorbing polymer particle for a specific X-load of the water-absorbing polymer particle is calculated via the formula below: Rxl = ( ( 1 rho_dry + x_L rho_liq ) N A · ? i ? ? w_xl i Mr_CXL i ) 1 3 ( I ) with x_L being the amount of liquid absorbed in the water-absorbing polymer particle in g liq/g water-absorbing polymer particle, rho_liq being the density at room temperature of the fluid that swells the water-absorbing polymer particle (generally saline of 0.

Abstract: A method for making water-absorbing polymer particles is provided and includes a first aqueous polymerization solution including crosslinkers, polymerizable monomers and/or oligomers and inorganic solid particles, and a second aqueous solution including inorganic solid particles, crosslinkers and either polymerizable monomers and/or oligomers, or crosslinkable polymers.

Abstract: An absorbent core suitable for use in an absorbent article comprising: a first absorbent layer, the first absorbent layer comprising a first substrate, and a layer of cross-linked cellulose fibers deposited on the first substrate, a second absorbent layer, the second absorbent layer comprising a second substrate, a layer of superabsorbent polymer particles deposited on the second substrate and a fibrous layer of thermoplastic adhesive material covering the layer of superabsorbent polymer particles. The first and second absorbent layers being combined together such that at least a portion of the fibrous layer of thermoplastic adhesive material contacts at least a portion of the layer of cross-linked cellulose fibers of the first absorbent layer.

Abstract: The present invention relates to agglomerated superabsorbent polymer particles which have been agglomerated by using a multivalent salt having a valence of three or higher. Due to agglomeration, the mean average particle size increase by at least 25% compared to the mean average particle size of the non-agglomerates superabsorbent polymer particles.