Inhibiting fouling employing a dispersant
US5266186A · kind A · utility
78Cited by
22References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 11, 1990 |
| Grant date | Nov 30, 1993 |
| Priority date | — |
| Expiry date | Dec 11, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S585/95
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a method for inhibiting fouling deposits in refinery processing equipment caused by the heat treatment of hydrocarbon feedstocks. The deposits are inhibited by adding to the feedstock an effective amount of an iron sulfide dispersant prepared in accordance with this invention. The dispersants comprise polyimides which are prepared by reacting fatty amines with maleic anhydride/alpha-olefin copolymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.