BITUMEN MANUFACTURE PROCESS Russian patent published in 2005 - IPC

Abstract RU 2253660 C2

FIELD: manufacture of road building materials.

SUBSTANCE: process comprises compounding commercial bitumen (92.5-97.5%) with petroleum processing product (2.5-7.5%), in particular bitumen converter, which is preliminarily obtained in the form of straight-run petroleum fraction from heavy low-paraffin naphthenic-base petroleum with kinematic viscosity 65-85 cSt at 50°C. Commercial bitumen is characterized by penetration at least 68 (25°C) and stretchability above 150 cm at 25°C.

EFFECT: improved performance characteristics of product and simplified manufacture technology.

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RU 2 253 660 C2

Authors

Kalinin V.V.

Khudjakova T.S.

Dates

2005-06-10—Published

2000-11-10—Filed