Foam control method
US5750052A · kind A · utility
6Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1996 |
| Grant date | May 12, 1998 |
| Priority date | — |
| Expiry date | Aug 30, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D19/0404
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods for controlling foam in hydrocarbon liquids within hydrocracking unit separator systems utilizing alkylphenolformaldehyde resin alkoxylates with a propylene oxide/ethylene oxide block copolymer having a molecular weight of from about 2000 to 6000 and having from about 20% to about 80% ethoxylation or an alkylarylsulfonic acid or alkylarylsulfonic acid amine salt to said hydrocarbon liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.