| 摘要 |
PURPOSE:To obtain a waterproof sheet of good adhesivity, by blending a blend of ethylene-propylene rubber and butyl rubber, specific petroleum resin, alkylphenol-acetylene resin and filler in specified proportions followed by molding and curing. CONSTITUTION:The objective waterproof sheet can be obtained by blending (A) 100pts.wt. of an ethylene-propylene rubber or its blend with butyl rubber, (B) 3-15pts.wt. of a petroleum resin modified with carboxyl group-contg. vinyl compound (e.g., phthalic anhydride) and/or alkylphenol-acetylene resin, and (C) 30-300pts.wt. of filler (e.g., calcium carbonate, talc) followed by molding and curing. |
