Abstract:
The invention relates to a water-absorbing agent in particulate form, comprising particles of a water-absorbing polymer and between 0.1 and 4 wt. %, (relative to the particulate polymer), of a fine-particle natural fibre.
Abstract:
The invention relates to hydrophilic, open-cell, elastic foams consisting of melamine/formaldehyde resins. Said foams can be obtained by (a) heating and cross-linking an aqueous solution or dispersion, containing, respectively, at least one melamine/formaldehyde precondensate, an emulsifier, an expanding agent and a hardener, a foam being formed, (b) subsequently tempering the foam for a period of 1 to 180 minutes at 120 to 300 DEG C, volatile parts being removed, and (c) treating the foam with at least one polymer during or after the tempering process, said polymer containing primary and/or secondary amino groups and having a molar mass of at least 300. The invention also relates to a method for producing the hydrophilic, open-cell, elastic foams and to their use in hygiene products for absorbing, distributing and immobilising bodily fluids.
Abstract:
The invention relates to the use of open-cell elastic foamed materials based on melamine/formaldehyde condensation products in hygiene articles for absorbing, distributing and immobilizing body fluids. The invention also relates to hygiene articles, which are constructed from a combination comprised of a liquid-impermeable layer, of an absorbent intermediate layer and of a liquid-permeable layer, whereby for absorbing, distributing and immobilizing body fluids, the absorbent intermediate layer is comprised of an open cell elastic foamed material made of melamine/formaldehyde condensation products having a density ranging from 5 to 200 g/l, a specific surface (determined according to the B.E.T. method) of greater than 0.5 m /g and having a free swell capacity of greater than 20 g/g.
Abstract:
The invention relates to the use of open-cell elastic foamed materials based on melamine/formaldehyde condensation products in hygiene articles for absorbing, distributing and immobilizing body fluids. The invention also relates to hygiene articles, which are constructed from a combination comprised of a liquid-impermeable layer, of an absorbent intermediate layer and of a liquid-permeable layer, whereby for absorbing, distributing and immobilizing body fluids, the absorbent intermediate layer is comprised of an open cell elastic foamed material made of melamine/formaldehyde condensation products having a density ranging from 5 to 200 g/l, a specific surface (determined according to the B.E.T. method) of greater than 0.5 m /g and having a free swell capacity of greater than 20 g/g.
Abstract:
The invention relates to polymeric mixtures containing hydrogel-forming polymers with different pH values and which absorb aqueous fluids. Said polymeric mixtures can be produced by polymerization of olefinically unsaturated carboxylic acids or derivatives thereof. The invention also relates to the production and use of said polymeric mixtures and to the hygienic articles containing said polymeric mixtures. The invention particularly relates to two-component polymeric mixtures from polymers with a pH range from acid to neutral.
Abstract:
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.
Abstract:
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.
Abstract:
Superabsorbent polymer (SAP) particels containing a clay are disclosed. The clay is added to an SAP hydrogel prior to SAP neutralization to provide particles having improved fluid acquisition rates and an improved permeability of a fluid through the swollen SAP-clay particles. Diaper cores and absorbent articles containing the SAP-clay particles also are disclosed.
Abstract:
Superabsorbent polymer (SAP) particels containing a clay are disclosed. The clay is added to an SAP hydrogel prior to SAP neutralization to provide particles having improved fluid acquisition rates and an improved permeability of a fluid through the swollen SAP-clay particles. Diaper cores and absorbent articles containing the SAP-clay particles also are disclosed.
Abstract:
The present invention relates to polymer mixtures comprising hydrogel forming polymers capable of absorbing aqueous fluids, having different pH values and each being preparable by polymerization of olefinically unsaturated carboxylic acids or derivatives thereof, their preparation, use and hygiene articles containing same. More particularly, the invention relates to 2-component polymer mixtures comprising polymers having a pH range from acidic to neutral.