Abstract: Water-absorbing, expanded, crosslinked polymers obtainable by (I) foaming a polymerizable aqueous mixture which comprises (a) monoethylenically unsaturated monomers which contain acidic groups and are optionally neutralized, (b) optionally other monoethylenically unsaturated monomers, (c) crosslinkers, (d) initiators, (e) 0.

Abstract: A water-absorbing, expanded, crosslinked polymer obtainable by (I) foaming a polymerizable aqueous mixture which comprises (a) monoethylenically unsaturated monomers which contain acidic groups and are optionally neutralized, (b) optionally other monoethylenically unsaturated monomers, (c) crosslinkers, (d) initiators, (e) 0.

Abstract: Absorber elements are described of at least one composite material having absorbent elements on a support, in which a plurality of elements of a superabsorbent foam are arranged on at least one support in a grid pattern at distances such that the elements in the swollen state touch at their peripheries.

Abstract: Water-absorbing foamlike crosslinked polymers which are obtainable by (I) foaming a polymerizable aqueous mixture which consists of (a) monoethylenically unsaturated monomers containing acid groups, which are at least 50 mol % neutralized, (b) with or without other monoethylenically unsaturated monomers, (c) crosslinker, (d) initiators, (e) from 0.1 to 20% by weight of at least one surfactant, (f) with or without one or more solubilizers and (g) with or without thickeners, foam stabilizers, polymerization regulators, fillers and/or cell nucleating agents, the foaming being performed by dispersing fine bubbles of a gas inert to free radicals, and (II) polymerizing the foamed mixture with formation of a foamed hydrogel, with or without adjusting the water content of the foamed polymer to from 1 to 60% by weight, processes for their preparation and their use in sanitary articles which are used for absorbing body fluids and in dressing materials for covering wounds are described.

Abstract: Water-absorbing, expanded, crosslinked polymers obtainable by(I) foaming a polymerizable aqueous mixture which comprises(a) monoethylenically unsaturated monomers which contain acidic groups and are at least 50 mol % neutralized,(b) with or without other monoethylenically unsaturated monomers,(c) crosslinkers,(d) initiators,(e) 0.1-20% by weight of at least one surfactant,(f) with or without at least one solubilizer and(g) with or without thickeners, foam stabilizers, polymerization regulators, fillers and/or cell nucleating agents,where the foaming takes place by dispersing fine bubbles of a gas which is inert to free radicals, and(II) polymerizing the foamed mixture to form an expanded hydrogel and adjusting the water content of the expanded polymer to 1-45% by weight, a process for their production and their use in hygiene articles employed to absorb body fluids and in dressing material for covering wounds.

Abstract: Process for the preparing high molecular weight polymers by polymerization of water-soluble, monoethylenically unsaturated moonomers and, if desired, crosslinkers, and, if desired, water-insoluble monoethylenically unsaturated monomers, in aqueous solution in the presence of polymerization initiators in a tubular reaction which at the end has a conical taper, the ratio of the diameter of the reactor (D1) to the diameter at the end of the conical taper of the reactor (D2) being from 2:1 to 25:1 and the angle between D1 at the beginning of the conical taper and the inner cone wall being >45.degree. and <90.degree., and discharge of the gelatinous reaction mixture from the reactor by injection of an inert gas.

Abstract: Water resistant films and coatings are prepared by treating films or coatings of water soluble or dispersible grafted proteins prepared with monoethylenically unsaturated monomers at above 40.degree. C. and/or with at least one compound which is a hardener for proteins, and are useful as compostable packaging materials or as outer layers of diapers.

Abstract: A process for the preparation of a base oil and middle distillate which is stable to oxidation and low temperature from a mineral oil fraction having a boiling range above 350.degree. C., by, in a first step, converting the mineral oil fraction on a hydrocracking catalyst under hydrocracking conditions to an extent of from 20 to 80% by weight into fractions which boil below 360.degree. C., separating the reactor effluent, if necessary, into liquid and gas phases in a high-pressure separator, treating the entire reactor effluent or only the liquid phase, directly or after removal of the fractions boiling below 360.degree. C. by distillation, in a second step with hydrogen at from 200.degree. to 450.degree. C.

Abstract: Medicinal white oils and medicinal paraffins are prepared from petroleum fractions containing aromatics and nitrogen, oxygen and sulfur compounds, e.g. light and heavy atmospheric gas oils, vacuum gas oils and residues, which have been pretreated in a first stage by acid treatment or catalytic hydrogenation, by hydrogenation in a second stage over a nickel-containing catalyst under from 50 to 200 bar and at elevated temperatures, by a process in which the catalyst used in the second stage and present in the oxide form is reduced with a hydrogen-containing gas, passivated and then again activated with hydrogen, before the hydrogenation to medicinal white oils or paraffins is carried out.