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    • 2. 发明授权
    • Pavement Binder
    • 路面粘合剂
    • US5549744A
    • 1996-08-27
    • US525898
    • 1995-09-08
    • Olga PuzicLarry J. EversKenneth E. WilliamsonMartin L. GorbatyNicholas C. Nahas
    • Olga PuzicLarry J. EversKenneth E. WilliamsonMartin L. GorbatyNicholas C. Nahas
    • C08L95/00E01C7/26C09D195/00
    • E01C7/267C08L95/00E01C7/265
    • The present invention provides for a method of making storage stable road paving binders by blending a minor amount of a polymer having at least one diene monomer with a major amount of asphalt containing at least 0.3% by weight of total nitrogen at an elevated temperature such that the components are sufficiently fluid to blend; treating the asphalt-polymer blend using not more than 250 meq of a sulfonating agent per 100 g of asphalt-polymer blend to introduce the corresponding acid functionality into the blend; maintaining the sulfonated asphalt-polymer blend at a sufficiently elevated temperature and stripping the sulfonated blend with sufficient chemically unreactive gas to remove a major fraction of the acid functionality introduced by sulfonation. The invention also provides for the compositions made by the process. These are useful as binders in road paving applications.
    • 本发明提供一种通过将少量具有至少一种二烯单体的聚合物与主要含量为总氮至少0.3重量%的沥青在升高的温度下混合来制备储存稳定的铺路粘合剂的方法,使得 组分充分流体混合; 使用每100g沥青聚合物共混物不超过250meq的磺化剂处理沥青聚合物共混物以将相应的酸官能团引入到共混物中; 在充分升高的温度下保持磺化沥青聚合物共混物,并用足够的化学反应性气体汽提磺化的共混物,以除去通过磺化引入的大部分酸性官能团。 本发明还提供了通过该方法制备的组合物。 这些作为道路铺路应用中的粘合剂是有用的。