OXIDIZED BITUMEN PRODUCTION PROCESS Russian patent published in 2003 - IPC

Abstract RU 2215773 C1

FIELD: petroleum processing. SUBSTANCE: in a process of producing oxidized bitumen by blowing air at elevated temperature through oil residue containing organic additive, the latter is still residue from 4,4'-diaminodiphenylmethane production in amounts 1 to 5% of the weight of raw material. EFFECT: improved quality of final product. 3 tbl, 6 ex

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RU 2 215 773 C1

Authors

Bembel' V.M.

Basova S.P.

Leonenko V.V.

Dates

2003-11-10—Published

2002-05-13—Filed