公开(公告)号：US5627225A

公开(公告)日：1997-05-06

申请号：US551078

申请日：1995-10-31

申请人： Martin L. Gorbaty ,  Christian G. Lenoble ,  Nicholas C. Nahas ,  Dennis G. Peiffer

发明人： Martin L. Gorbaty ,  Christian G. Lenoble ,  Nicholas C. Nahas ,  Dennis G. Peiffer

IPC分类号： C08L95/00 ,  E01C7/26

CPC分类号： E01C7/267 ,  C08L95/00

摘要： This invention provides for novel road paving binder compositions and the method of making them. One embodiment is a road paving binder composition of a storage stable blend of a sulfonated, unhydrogenated random copolymer of styrene and butadiene having a sulfonation level of from 1 to 100 meq S0.sub.3 H/100 g of polymer and a sulfonated asphalt. Another is a method of making a storage stable polymer modified asphalt composition by combining a sulfonated unhydrogenated random styrene butadiene copolymer having a sulfonation level of from about 1 to 100 meq S0.sub.3 H per 100 g of polymer and a sulfonated asphalt at a temperature of at least about 180.degree. C. to produce a storage stable polymer modified asphalt. Yet another is a method of making a storage stable polymer modified asphalt by combining a sulfonated unhydrogenated random styrene and butadiene copolymer having a sulfonation level of from about 1 to 100 meq S0.sub.3 H/100 g of polymer, and unsulfonated asphalt and a basic neutralizing agent at a temperature of from about 170.degree. C. to 185.degree. C. to produce a storage stable polymer modified asphalt. Still another is a method for making a storage stable road paving composition by cosulfonation of a blend of unhydrogenated random styrene-butadiene copolymer and an asphalt at 180.degree.-210.degree. C. The novel road paving asphaltic compositions have enhanced viscoelasticity and storage stability. The compositions can be used as binders in road paving applications. Sulfonated copolymers of random styrene-isoprene may be substituted for the sulfonated copolymers of styrene-butadiene herein.

摘要翻译： 本发明提供了新型路面铺路粘合剂组合物及其制备方法。 一个实施方案是具有1至100meq SO 3 H / 100g聚合物和磺化沥青的磺化水平的苯乙烯和丁二烯的磺化，未氢化的无规共聚物的储存稳定共混物的铺路粘合剂组合物。 另一种是通过将磺化的未氢化的无规苯乙烯丁二烯共聚物与磺酸化沥青混合，所述磺化非氢化的无规苯乙烯丁二烯共聚物的磺酸化水平为每100g聚合物约1至100meq SO 3 H，磺化沥青的温度为至少约 180℃，生产储存稳定的聚合物改性沥青。 另一种是通过将磺化未氢化的无规苯乙烯和磺化程度为约1至100meq SO 3 H / 100g聚合物的磺化非氢化无规苯乙烯和丁二烯共聚物，以及未磺​​化沥青和碱性中和剂组合而制备储存稳定的聚合物改性沥青的方法 温度为约170℃至185℃，以产生储存稳定的聚合物改性沥青。 另一种是通过在180-210℃下将未氢化的无规苯乙烯 - 丁二烯共聚物和沥青的共混物进行磺化来制备储存稳定的铺路组合物的方法。新型铺路沥青组合物具有增强的粘弹性和储存稳定性。 组合物可以用作道路摊铺应用中的粘合剂。 无规苯乙烯 - 异戊二烯的磺化共聚物可以代替苯乙烯 - 丁二烯的磺化共聚物。