Abstract:
The present invention relates to a process for producing fluid-absorbent cores, comprising mixing a fibrous material and fluid-absorbent polymer particles having low moisture content and low apparent density and pressing the obtained mixture under specific conditions.
Abstract:
The present invention relates to novel hydrophilic swellable addition polymers comprising improved odor control, a process for their preparation and their use for absorbing aqueous fluids and a process for screening superabsorbents.
Abstract:
A process for producing water-absorbing polymer particles, wherein a product stream comprising water-absorbing polymer particles is tested for nonferritic metallic impurities by means of an eddy current detector.
Abstract:
The invention relates to the production of superabsorbent polymers comprising polymerizing a monomer solution on a continuous belt reactor, wherein the consistency of the formed polymer gel at the end of the continuous belt reactor is controlled by adjusting the intensity of energy-rich radiation.
Abstract:
The invention relates to a method for the transportation of a monomer composition in which a composition comprising an aqueous solution of partially or entirely neutralized acrylic acid or overneutralized acrylic acid is placed in a transport means or sent through a pipe. The method according to the invention is characterized in that it has an increased level of safety during the transportation of acrylic acid monomers, an improved quality of the resulting product, and a high degree of efficiency. The method ensures safe transport of the highly reactive acrylic acid. The amount of polymerization inhibitors added to said acrylic acid may be reduced. An additional advantage is the minimization of the formation of dimeric acrylic acid. Tempering of containers, pipes, and pipelines may be omitted.
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.
Abstract:
A process for continuously classifying water-absorbing polymer beads by means of at least one screen, at least one screen having at least one guide device on the screen surface.
Abstract:
A process for pneumatic delivery of water-absorbing polymer particles, the initial gas rate in the delivery being from 1 to 6 m/s and the delivery material loading being from 1 to 100 kg/kg.
Abstract:
A process for continuously preparing water-absorbing polymer beads by determining at least one particulate delivery material mass flow by means of incident electromagnetic waves.