Abstract:
Disclosed is a layered composite system comprising one or several layers A) made of an open-cell foam based on an aminoplast, and one or several layers B) made of nonwoven fabric or fibrous tissue. Layer B contains melamine fibers. Also disclosed are production methods and the use of the inventive layered composite system as a cleaning sponge or protective support.
Abstract:
Melamine/formaldehyde foams which contain 0.01 to 45% by weight of a particulate filler having a median particle diameter in the range from 5 µm to 3 mm, wherein the % by weight is based on the total weight of the melamine/formaldehyde precondensate and filler used for the foam production.
Abstract:
The invention relates to a composite material, comprising at least one superabsorbent polymer and at least one elastic aminoplastic foam as a supporting material, to hygienic products, sealing materials, insulating substances, drying agents, water accumulators, packagings and artificial plant substrates, containing a composite material, and to a method for the production of a composite material that contains at least one elastic aminoplastic foam as a supporting material and at least one superabsorbent polymer, said method comprising the steps: A) providing an aqueous solution or dispersion that contains precursor compounds of the at least one elastic aminoplastic foam and optionally other additives; B) adding at least one superabsorbent polymer to the aqueous solution or dispersion of step A); and C) polymerizing the precursor compounds of the at least one elastic aminoplastic foam in the aqueous solution or dispersion of step B), in order to obtain the composite material by heating.
Abstract:
The invention relates to a method for obtaining water for domestic use by the condensation of mist on the webs of an open-cell aminoplast-based foam and/or to a method for obtaining water for domestic use by the evaporation of water containing salt or impurities from the cells of an open-cell aminoplast-based foam and by the condensation of the evaporated water. The open-cell foam is produced from a melamine/formaldehyde condensation product with a molar ratio of melamine to formaldehyde ranging between 1:1 and 1:5.
Abstract:
The invention relates to a liquid-impregnated foamed plastic part consisting of a) between 1 and 10 % by volume of an aminoplastic-based, open-pored foamed plastic and b) between 90 and 99 % by volume of a component that is liquid at 25°C, such as aromatic or aliphatic hydrocarbons, alcohols, ketones, water or aqueous dispersions, and to the uses of said part for transporting or metering liquids, for freeze-explosion purposes, for projectile energy absorption or as a latent heat accumulator.
Abstract:
The invention relates to a tube which has been filled with an open-cell foam based on an aminoplastic, in particular on a melamine-formaldehyde condensate, and also to its uses, in particular as filter or static mixer.
Abstract:
Espuma que contiene microesferas huecas para la absorción acústica que contiene del 40% al 85% en peso de espuma polimérica de célula abierta y del 15% al 60% en peso de microesferas huecas con capa externa flexible, en la que las microesferas huecaspresentan un valor D50 de al menos 100 micrómetros y como máximo 250 micrómetros (determinado según elprocedimiento de medición de la descripción), con respecto al peso total de espuma polimérica y microesferas huecas.