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Application

98108563/04, 1998-04-30

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Actual filing date

1998-04-30

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Published

1999-12-10

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Inventor

Usmanov M.M.Il'Jasov V.G.Sajfullin N.R.Teljashev Eh.G.Khajrudinov I.R.Kut'In Ju.A.Nigmatullin R.G.Sultanov F.M.Biktimirova T.G.Sulejmanov N.T.

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Holder

Institut Problem Neftekhimpererabotki An Respubliki BashkortostanOo Bashkirskij Institut Patentovedenija I Sertifikatsii

METHOD OF PREPARING PAVING BITUMENS Russian patent published in 1999 - IPC

Abstract RU 2142493 C1

FIELD: petroleum processing and road-building. SUBSTANCE: paving bitumens are prepared by hydrocarbon solvent-assisted deasphalting of goudron followed by mixing deasphalting asphalt with petroleum diluents. Deasphalting is carried out such that content of paraffin-naphtene hydrocarbons would not exceed 10-11% and weight ratio of asphaltenes to saturated hydrocarbons would be 1.4-1.7. EFFECT: improved disperse structure resulting in increased paving lifetime and simplified method of preparing paving bitumens. 3 tbl, 7 ex

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RU 2 142 493 C1

Authors

Usmanov M.M.

Il'Jasov V.G.

Sajfullin N.R.

Teljashev Eh.G.

Khajrudinov I.R.

Kut'In Ju.A.

Nigmatullin R.G.

Sultanov F.M.

Biktimirova T.G.

Sulejmanov N.T.

Dates

1999-12-10—Published

1998-04-30—Filed