Patent · US Expired

Process for dyeing asphalt

US5389137A · kind A · utility

17Cited by

4References

8Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Gunter Linde · Krefeld, DE
Manfred Eitel · Kempen, DE
Gerald Buchner · Krefeld, DE
Peter Kresse · Krefeld, DE
Gunther Teichmann · Krefeld, DE

Key dates

Filing date	Apr 19, 1993
Grant date	Feb 14, 1995
Priority date	—
Expiry date	Apr 19, 2013

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2004/50
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

This invention relates to a process for dyeing asphalt and/or bitumen with inorganic granulated pigments, which is characterized in that inorganic pigments, to which have been added oils which possess a kinematic viscosity at 40.degree. C. (DIN 51 561) of 1.6 to 1,500 mm.sup.2 /s, and/or waxes, polyols, polyethers and paraffins with dropping points (DIN 51 801, ASTM D 566) of between 50.degree. and 180.degree. C. as binding agents, are granulated and mixed with the asphalt and/or bitumen.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.