Stabilising blends of pitch and bitumen with tar oils

Stabilising pitch-bitumen blends, which can be softened with tar oils, includes mixing coal tar pitch, before petroleum bitumen is added, with aromatic hydrocarbon resins of the indene type or with technical prods. contg. these resins. The coal tar pitch has softening pt. (ring and ball) 40-120 deg....

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Bibliographische Detailangaben
Hauptverfasser:	J PRODAN, W THIELECKE, J POLACZEK, Z LISICKI, B NOWICKI, G COLLIN, K ALAMA, S DARIUSZ, T TECZA, Z FLORSCH, J BOGUCKI, A SZEN
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Zusammenfassung:	Stabilising pitch-bitumen blends, which can be softened with tar oils, includes mixing coal tar pitch, before petroleum bitumen is added, with aromatic hydrocarbon resins of the indene type or with technical prods. contg. these resins. The coal tar pitch has softening pt. (ring and ball) 40-120 deg.C. The bitumen component pref. has penetration 40-120 x 0.1 mm and may be an extn. bitumen, as well as the distn. bitumens usually used in road building. The hydrocarbon resin is pref. a cumarone -indene resin, including one of the dark types; or it may be one obtd. from the pyrolysis residues from ethylene prodn. from gasoline. DES PHENOMENES DE DEMIXTION SPONTANEE SE PRODUISENT DANS LES MELANGES DE BRAI ET DE BITUME UTILISES COMME LIANTS DANS LA CONSTRUCTION ROUTIERE, PHENOMENES LIES A DES SEDIMENTATIONS DANS LES RESERVOIRS LORSQUE LA TENEUR EN INSOLUBLE DANS LE TOLUENE DANS LE BRAI PLASTIFIE DEPASSE 10 . L'ADDITION AU BRAI DE RESINES HYDROCARBONEES AROMATIQUES DU TYPE INDENE SUPPRIME CES PHENOMENES DE DEMIXTION.