摘要:
A liquid-impregnated shaped foam article consisting ofa) from 1 to 10% by volume of an open-cell foam based on an aminoplast andb) from 90 to 99% by volume of a component which is liquid at 25° C., such as aromatic or aliphatic hydrocarbons, alcohols, ketones, water or aqueous dispersions, and the uses thereof for transporting or metering liquids, for cleavage through freezing, for energy absorption of projectiles or as latent heat stores.
摘要:
An electrochemical element which comprises an open-cell foam based on a melamine/formaldehyde foam, the cell pores being completely or partly filled with a flowable electrolyte and a process for the production of a battery, accumulator or fuel cell.
摘要:
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.
摘要:
Melamine-formaldehyde foams comprise from 80% to 98% by weight of an inorganic filling material, wherein the % by weight are based on the total weight of inorganic filling material plus melamine-formaldehyde precondensate used for foam production.
摘要:
Melamine/formaldehyde foams comprising from 0.01% to 45% by weight of a particulate filling material having an average particle diameter in the range from 5 μm to 3 mm, wherein the % by weight are based on the total weight of filling material plus melamine-formaldehyde precondensate used for foam production.
摘要:
Melamine-formaldehyde foams comprise from 80% to 98% by weight of an inorganic filling material, wherein the % by weight are based on the total weight of inorganic filling material plus melamine-formaldehyde precondensate used for foam production.
摘要:
The present invention concerns a process for producing a foam comprising at least one antimicrobial active, comprising the steps of: (1) preparing a solution or dispersion comprising at least one precondensate of the foam to be produced and at least one antimicrobial active, (2) foaming the precondensate by heating the solution or dispersion of step (1) to obtain a foam comprising at least one antimicrobial active, and (3) heat treating the foam obtained in step (2) at a temperature in the range from 120 to 300° C., a foam thus produced, a shaped article comprising such a foam and the use of such a foam for thermal and acoustical insulation of buildings and parts of buildings, thermal and acoustical insulation of the interiors of land, air and sea vehicles, low-temperature insulation, as an insulating wall cladding, as an insulating and shock-absorbing packaging material, as abrasive cleaning, grinding and polishing sponges, in the hygiene sector and as a filter material.
摘要:
Novel melamine-formaldehyde foams comprising microcapsules built into the structure of the condensation products and also processes for the production thereof and uses thereof.
摘要:
A process for production of an abrasive foam based on a melamine-formaldehyde condensate comprising inorganic nanoparticles, comprising the steps of: (1) preparation of a solution or dispersion comprising a precondensate of the foam to be produced, and also comprising inorganic nanoparticles, (2) foaming of the precondensate via heating of the solution or dispersion from step (1), in order to obtain a foam which comprises inorganic nanoparticles, and also, if appropriate, (3) heat-conditioning of the foam obtained in step (2), leads to improved abrasion in the polishing of delicate surfaces.
摘要:
A process for production of an abrasive foam based on a melamine-formaldehyde condensate comprising inorganic nanoparticles, comprising the steps of: (1) preparation of a solution or dispersion comprising a precondensate of the foam to be produced, and also comprising inorganic nanoparticles, (2) foaming of the precondensate via heating of the solution or dispersion from step (1), in order to obtain a foam which comprises inorganic nanoparticles, and also, if appropriate, (3) heat-conditioning of the foam obtained in step (2), leads to improved abrasion in the polishing of delicate surfaces.