| 摘要 |
BITUMEN/POLYMER COMPOSITIONS WITH ENLARGED PLASTICITY INTERVAL ARE PRODUCED BY PUTTING IN CONTACT, BETWEEN 100°C AND 230°C AND UNDER STIRRING, A BITUMEN OR BITUMEN OE BLEND OF BITUMENS WITH AN ELASTOMER RETICULABLE WITH SULPHUR AND A COUPLING AGENT DONOR OF SULPHUR TO PRODUCE RETICULATED BITUMEN/POLYMER COMPOSITION, THEN BY INCORPORATING TO THE AFOREMENTIONED COMPOSITION, KEPT BETWEEN 100°C AND 230°C AND UNDER STIRRING, AN ACID ADDITIVE CHOSEN AMONG THE POLYPHOSPHORIC ACIDS, THE ACIDS WITH A FORMULA R- (COO)T -SO3 H WHERE T=0 OR 1 AND R REFERS TO AN HYDROCABYL MONOVALENT RADICAL UP TO C12 AND THE MIXTURES OF THE TWO TYPES OF ACIDS TOGETHER OR/AND WITH THE SULFURIC ACID, AND BY MAINTAINING THE REACTIONAL ENVIRONMENT OBTAINED BETWEEN 100°C AND 230°C UNDER STIRRING FOR AT LEAST 10 MINUTES. THESE BITUMEN/POLYMER COMPOSITIONS ARE USABLE, DIRECTLY OR AFTER DILUTION, TO FORM BITUMEN BINDERS FOR THE REALIZATION OF SUPERFICIAL ROAD SURFACES, COATINGS AND WATER-PROOF . |
