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    • 2. 发明授权
    • Method of producing asphalt having an increased penetration and
penetration index
    • 生产沥青和渗透指数增加的方法
    • US5320739A
    • 1994-06-14
    • US58509
    • 1993-05-06
    • Lyle E. MoranWilliam J. Murphy
    • Lyle E. MoranWilliam J. Murphy
    • C10C3/10C10C3/02
    • C10C3/026
    • This invention relates to a method of producing a softer asphalt product with improved low temperature properties and reduced solids buildup from an asphalt feed which comprises measuring the penetration and Penetration Index of the asphalt feed and heat soaking the asphalt feed in the presence of at least one C.sub.1 to C.sub.5 halogenated aliphatic hydrocarbon as dehydrogenation agent wherein from about 0.05 to about 10 wt. % of the dehydrogenation agent, based on weight of the asphalt, is present during heat soaking, at a temperature ranging between about 300.degree. C. and about 400.degree. C., said temperature being sufficient to increase the penetration and Penetration Index over that of the asphalt feed provided that the temperature should not exceed the temperature at which onset of coking occurs and further provided that the asphalt product has a trichloroethylene solubles content of at least about 99.5 wt. %, based on asphalt.
    • 本发明涉及一种生产具有改进的低温性能和减少从沥青进料产生的固体的较软的沥青产品的方法,其包括测量沥青进料的渗透和渗透指数,并且在至少一种 C1至C5卤代脂族烃作为脱氢剂,其中约0.05至约10wt。 脱氢剂的%基于沥青的重量在热浸泡期间存在,温度范围在约300℃至约400℃之间,所述温度足以增加渗透和渗透指数超过 沥青进料的温度不应超过发生焦化的温度,并且进一步规定,沥青产品的三氯乙烯可溶物含量至少为约99.5重量%。 %,基于沥青。