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2 119 523

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IPC

(21) (22)

Application

97110330/04, 1997-06-17

(22)

Actual filing date

1997-06-17

(45)

Published

1998-09-27

(72)

Inventor

Evdokimova Natal'Ja GeorgievnaLobanov Viktor VladimirovichZhirnov Boris SemenovichSemenov Evgenij MikhajlovichVol'Man Jurij KhilichGizatullin Rim RifgatovichShaul'Skij Jurij Mikhajlovich

(73)

Holder

Evdokimova Natal'Ja GeorgievnaLobanov Viktor VladimirovichZhirnov Boris SemenovichSemenov Evgenij MikhajlovichVol'Man Jurij KhilichGizatullin Rim RifgatovichShaul'Skij Jurij Mikhajlovich

METHOD OF PREPARING BITUMEN Russian patent published in 1998 - IPC

Abstract RU 2119523 C1

FIELD: oil refining industry. SUBSTANCE: oil stock is oxidized with atmospheric air at 240-260 C in the presence of residue resulting from rectification of hydrodealkylate of pyrocondensate benzene-toluene fraction in amount of 2-6 wt % per stock. EFFECT: improved plastic and adhesive properties of bitumens and accelerated oxidation process. 7 ex, 1 tbl

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RU 2 119 523 C1

Authors

Evdokimova Natal'Ja Georgievna

Lobanov Viktor Vladimirovich

Zhirnov Boris Semenovich

Semenov Evgenij Mikhajlovich

Vol'Man Jurij Khilich

Gizatullin Rim Rifgatovich

Shaul'Skij Jurij Mikhajlovich

Dates

1998-09-27—Published

1997-06-17—Filed