| 摘要 |
<p>Waterproofing sheets or membranes comprising a support composed of or comprising a vulcanized polyolefinic rubber enclosed in a sandwich-type structure between two layers of bituminous composition selected from: (1) compositions comprising, by weight, (A) 60-90% of bitumen (B) 3.5-20% of EPM or EPDM rubber (C) 3-20% of HD polyethylene (D) 1.5-10% of EVA copolymer (E) 0-10% of isotactic polypropylene (F) 0-20% of inorganic filler; (2) compositions comprising, by weight, (A) 60-90% of bitumen (B) 40-10% of elastomeric styrene-butadiene copolymer (C) 0-20% of amorphous polypropylene (D) 0-20% of inorganic filler.</p> |
