| 摘要 |
PCT No. PCT/FR98/00788 Sec. 371 Date Dec. 18, 1998 Sec. 102(e) Date Dec. 18, 1998 PCT Filed Apr. 17, 1998 PCT Pub. No. WO98/47966 PCT Pub. Date Oct. 29, 1998The invention provides a method for producing bitumen/polymer compositions which consists of contacting, between 100 DEG C. and 230 DEG C. and under agitation, a bitumen or a mixture of bitumens with at least one styrene and butadiene copolymer having a global butadiene content ranging between 50% and 95 wt. % and a content of butadiene 1,2 double-bond structural units ranging between 12% and 50 wt % of the copolymer, and, preferably, also a sulphuring coupling agent or a functionalizing agent. The bitumen/polymer compositions are usable, directly or after dilution, for forming bitumen/polymer binders for surfacing materials. |
