Patent · US Expired

Process for the removal of surface-distributed hydrocarbons, in particular oil residues

US4980072A · kind A · utility

6Cited by

3References

5Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Thomas Augustin · Cameron Park, US
Dietmar Schapel · Cologne, DE
Peter Nowak · Dormagen, DE

Key dates

Filing date	Nov 1, 1989
Grant date	Dec 25, 1990
Priority date	—
Expiry date	Nov 1, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S210/925
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Surface-distributed hydrocarbons, in particular mineral oil and mineral oil processing products, are removed by allowing water and a polyether containing isocyanate end groups to act on the hydrocarbons and by mechanically removing the gel containing hydrocarbons which is formed.

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