PROCESS FOR THE PREPARATION OF BITUMEN/POLYMER CROSS-LINKED AND/OR FUNCTIONALISED COMPOSITIONS WITH VERY LOW HEAT SUSCEPTIBILITY AND APPLICATION OF THE COMPOSITIONS OBTAINED TO PROVIDE SURFACE COATINGS

摘要

THESE COMPOSITIONS ARE PREPARED BY FORMING A HOMOGENEOUS MASS CONSISTING OF A BITUMINOUS MATRIX IN WHICH A CROSS-LINKED AND/OR FUNCTIONALISED ELASTOMER IS UNIFORMLY DISPERSED, PRODUCED IN SITU FROM A PRECURSOR ELASTOMER USED IN A QUANTITY RANGING FROM 0.5TO 30IN WEIGHT OF THE BITUMINOUS MATRIX. THE BITUMINOUS MATRIX IS OBTAINED BY COMBINING 95TO 20IN WEIGHT OF NON-OXIDISED BITUMEN, WITH PENETRATION IN THE RANGE OF 20 TO 900, WITH 5TO 80OF OXIDISED BITUMEN WITH PENETRATION IN THE RANGE OF 10 TO 90. SAID COMPOSITIONS CAN BE USED AS BITUMEN BINDERS FOR SURFACE COATINGS.