Sound-insulating leather powder compositions
AssigneeMecseki Szenbanyak
InventorsIstvan Gyurko, Csaba Czeininger, Karoly Mosko, Ferenc Nagy
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Abstract
The invention relates to new sound- and heat-insulating compositions, which comprise a finely dispersed leather powder of animal origin, a phenoplast resin or an aminoplast resin and optionally, together with the latter one, urea and/or a modified furane resin and optionally a wetting and/or foaming agent and an acid catalyst and optionally water. The compositions according to the invention have remarkable noise- and heat-insulating properties.
Claims10
Sound- and heat-insulating microporous and/or macroporous composition, which comprises a finely dispersed leather powder whose elementary fibrils have a diameter of about 0.2 to 0.8 microns and are about 5 to 15 microns long of animal origins, a phenol-aldehyde resin or a urea formaldehyde resin, and a wetting and/or foaming agent and an acidic catalyst.
Dependencies are inferred from the claim text.