Wax deposit inhibitors
US6140276A · kind A · utility
10Cited by
15References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1998 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Jun 4, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S585/95
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of reducing the deposition of wax from a crude oil containing wax which comprises adding thereto at least one N-substituted polyalkylene imine which has at least one organic substituent that is a hydroxy-substituted alkyl group of 12-24 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.