Sound-absorbent foam system

Details Sound-absorbent foam system Sound-absorbent foam system

C - Chemistry, Metallurgy

08

L

C08L 97/00 (2006.01)

Patent

CA 2715670

The present invention relates to a novel sound-absorbent foam system in the form of an open-cell mineral-organic material, which can even attain building material class B1 according to DIN 1402 and is used for reducing sound levels, in particular in interior spaces. The material is distinguished by containing lignosulphonate.

L'invention concerne un nouveau système de mousse absorbant acoustique se présentant sous la forme d'un matériau organo-minéral à pore ouvert. Ledit nouveau système peut atteindre la classe B1 du classement des matériaux de construction selon la norme DIN 1402 et est utilisé pour réduire la puissance acoustique, notamment à l'intérieur de locaux. Le matériau se caractérise en ce qu'il contient du sulfonate de lignine.

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