Sound-absorbing materials for acoustic absorption, to limit the reverberation of rooms and/or buildings; insulating paints, varnishes, plasters and oils; substances for insulating buildings against moisture; soundproofing materials; acrylic resins, semi-processed; rubber, gutta-percha, gum, mica and goods made from these, not included in other classes; plastics in extruded form for use in manufacture; sealing, gasket and insulation materials, including thermal, acoustic and fire-resistant ins...