Patent · US Active

Ballast and process for the production of ballast

US8715778B2 · kind B2 · utility

3Cited by

10References

10Claims

0Family size

Assignee

Bayer MaterialScience AG · DE

Inventors

Andreas Hoffmann · North Bend, US
Heinz-Dieter Ebert · Burscheid, DE
Bert Klesczewski · Neunburg vorm Wald, DE

Key dates

Filing date	Jan 17, 2007
Grant date	May 6, 2014
Priority date	—
Expiry date	Jan 25, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2101/00
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

The present invention relates to ballast which have a high stability and a long service life and to a process for the production of ballast. These ballast are suitable for railway track laying and road construction and dike systems used for example in costal protection. These ballast comprise ballast stones and polyurethane foams based on a reaction mixture of selected polyisocyanates and selected compounds with isocyanate-reactive groups.

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