The Procter Gamble Company

Arsen Arsenov Simonyan

Dimitris Ioannis Collias

Martin Ian James

Juliane Kamphus

Gary Wayne Gilbertson

John Andrew McDaniel

Josef Breu

Yiping Sun

Bruno Johannes Ehrnsperger

Jacqueline Besinaiz Thomas

John Andrew McDANIEL

Raul Victorino Nunes

Yoshiro Mitsukami

Jose Carlos Garcia-Garcia

Steven Ray Merrigan

John Christopher Wesner

Heike Opper

Maxwell Joseph Wingert

Lina Mayr

Sebastian Seiffert

Mark Monroe Banaszak Holl

Axel Kai Tobias Habicht

Teck Wei Ching

Jing Zhang

Saskia Kraemer

Carolin Michaela Borgmann

Natasa Dijakov

Morgan Christine McGrath

Akshat Tanksale

Heitham Darrell Safi

Keisuke Kikuchi

John Andrew Mcdaniel

Superabsorbent fibers (SAF) in a feed stream is converted with UV irradiation into soluble polymers in a flow system. The UV total energy used to convert SAF into soluble polymers is less than about 50 MJ/kg SAF.

Recycling of superabsorbent fibers via UV irradiation in flow system

Provided is a method for producing an absorbent article comprising a water-absorbing resin having an excellent initial water absorption speed under load even substantially without adding a liquid permeability enhancer. The method steps for producing the water-absorbing resin includes the step of polymerizing a monomer while adding certain polyalkylene glycol thereto so as to generate, during or after the polymerization, a crosslinked hydrogel polymer containing the polyalkylene glycol of a specific molecular weight, wherein the crosslinked hydrogel polymer has a centrifuge retention capacity within a given range and a final water-absorbing resin to be obtained has various physical properties (CRC, AAP, SFC, FSR) being within given ranges.

Method for producing absorbent articles comprising water-absorbing resin

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.

Degradation of superabsorbent fibers via oxidative degradation

Open-cell foam having a structure of interconnected struts formed of polymeric material and defining open cells, resulting from polymerization of a continuous phase of a high internal phase water-in-oil emulsion, the struts comprising the polymeric material with clay nanoparticles at least partially captured therewithin, is disclosed. The clay nanoparticles may be present in combination with a surface modifier. Methods for making the open-cell foam are also disclosed. Absorbent articles including the open cell foam are also disclosed.

Absorbent articles including HIPE foam enhanced with clay nanoplatelets, and method of manufacture

Superabsorbent polymer material comprising cross-linked polyacrylic acid and salts thereof. The superabsorbent polymer material further comprising at least 3.0 weight-%, based on the total weight of the superabsorbent polymer material, of soluble polyacrylic acid polymers. A method for making such superabsorbent polymer materials is also disclosed.

Superabsorbent polymer material comprising non-crosslinked polyacrylic acid polymer

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.

Recycling of superabsorbent fibers with an extensional flow device

An AHP is disclosed having a topsheet, a backsheet joined with the topsheet, an absorbent core, disposed between the topsheet and the backsheet, and a poly(acrylic acid)-based superabsorbent polymer (SAP), partly derived from recycled resources. The SAP exhibits defined Saline Flow Conductivity and Absorption Against Pressure values. Methods for making the aforementioned AHP are also disclosed.

Absorbent hygiene product comprising superabsorbent polymer partly derived from a recycled resource and methods of producing said product

New process for recycling of poly(acrylic acid)-based superabsorbent polymer (SAP) using a synergistic combination of high shear mixing device and oxidative degradation of SAP to produce poly(acrylic acid) (PAA) useful to recycle pre- and post-consumer SAP.

Recycling of superabsorbent polymer with a hybrid oxidative degradation and high shear mixing

Poly(acrylic acid)-based superabsorbent polymer (SAP) in a feed stream is converted into poly(acrylic acid) (PAA) in an extensional flow device. The total energy used to degrade the SAP into PAA is less than about 50 MJ/kg SAP.

Recycling of superabsorbent polymer with an extensional flow device

Poly(acrylic acid)-based superabsorbent polymer (SAP) and HOin a feed is converted with microwave (MW) irradiation into poly(acrylic acid) (PAA) in the product. The MW total energy used to convert SAP into PAA is less than 50 MJ/kg SAP.

Recycling of superabsorbent polymer via hydrothermal microwave processing

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 (R) in a water-absorbing polymer particle for a specific X-load of the water-absorbing polymer particle is calculated via the formula below: 

Absorbent core having water-absorbing polymer particles

Poly(acrylic acid)-based superabsorbent polymer (SAP) in a feed stream is converted with UV irradiation into poly(acrylic acid) (PAA) in a flow system. The UV total energy used to convert SAP into PAA is less than about 50 MJ/kg SAP.

Recycling of superabsorbent polymer via UV irradiation in flow system

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.

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Schwalbach, Germany

Arsen Arsenov Simonyan