MULTI-LAYER ANTI-NOISE PLATE

摘要

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.