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    • 10. 发明授权
    • Roofing coating asphalt composition
    • 屋面涂料沥青组合物
    • US08753442B2
    • 2014-06-17
    • US13096040
    • 2011-04-28
    • David C. TrumboreJason D. GuerraSue Ann Jones
    • David C. TrumboreJason D. GuerraDavid R. Jones, IV
    • C08L95/00
    • C08L95/00C08L91/06C09D195/00C10C3/04D06N5/003E04D1/20C08L23/26C08L2666/06
    • A method of producing a roofing shingle coating asphalt from a non-coating grade asphalt feedstock includes the following steps. The non-coating grade asphalt feedstock is partially blown to lower its penetration to a first penetration that is within or close to a target penetration range of the coating asphalt, and to raise its softening point to a first softening point that is lower than a target softening point range of the coating asphalt. A wax is added to the partially blown non-coating grade asphalt to further raise its softening point to a second softening point that is within the target softening point range to produce the coating asphalt. The wax may also be added during the blowing process. Resulting roofing coating asphalt compositions may comprise a paving grade asphalt and a wax, and yet still has desirable penetration, softening point and viscosity.
    • 从非涂层级沥青原料生产屋顶瓦涂沥青的方法包括以下步骤。 非涂层级沥青原料被部分吹制以将其渗透降低到处于或接近涂层沥青的目标渗透范围内的第一渗透性,并将其软化点升高至低于目标的第一软化点 涂层沥青的软化点范围。 将蜡加入到部分吹制的非涂层级沥青中以进一步将其软化点提高到在目标软化点范围内的第二软化点以产生涂层沥青。 蜡也可以在吹塑过程中加入。 所得的屋顶涂料沥青组合物可以包括铺路级沥青和蜡,并且仍然具有期望的渗透性,软化点和粘度。