Use of alkoxylated alkanolamide together with alkoxylated alcohol as a friction-reducing agent
US5979479A · kind A · utility
8Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1997 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Sep 3, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0391
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Use of a mixture of at least one alkanolamide of general formula (I), wherein R is a hydrocarbon group having 7-23 carbon atoms, preferably 11-23 carbons atoms, A is an alkyleneoxy group having 2-4 carbon atoms and n is 2-12, preferably 2-8, and at least one alkoxylated alcohol in a weight ratio between the alkoxylated alkanolamide and the alkoxylated alcohol from 10:1 to 1:10, preferably in the range from 5:1 to 1:5 for producing a water-base liquid system with reduced flow resistance between the flowing, water-base liquid system and a solid surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.