| 摘要 |
<p>THE INVENTION PROVIDES A PIPE COATING WHICH COMPRISES A BITUMEN COMPOSITION COMPRISING IN THE RANGE OF FROM 20 TO 98BY WEIGHT OF A BITUMEN, IN THE RANGE OF FROM 0.5 TO 30BY WEIGHT OF A BLOCK COPOLYMER OF A VINYL AROMATIC HYDROCARBON AND A CONJUGATED DIENE WHEREIN THE DIENE BLOCK OF THE BLOCK COPOLYMER IS HYDROGENATED, AND IN THE RANGE OF FROM 0.5 TO 30BY WEIGHT OF A STEREOREGULAR POLYOLEFIN, ALL WEIGHTS BASED ON TOTAL BITUMEN COMPOSITION; A PIPE COATED IN SAID PIPE COATING; A PROCESS OF COATING PIPES IN SAID PIPE COATING, AND THE USE OF SAID BITUMEN COMPOSITION AS A PIPE COATING .</p> |
