Demulsifying process
US4596653A · kind A · utility
17Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1984 |
| Grant date | Jun 24, 1986 |
| Priority date | — |
| Expiry date | Oct 17, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G33/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Emulsions of oil and water are broken by treating them with a demulsifier which is a polysiloxane polyalkylene oxide copolymer in which the polyalkylene oxide segment is composed of random ethylene oxide and propylene oxide units. The demulsifier is particularly useful in breaking emulsions of water in crude oil which are normally difficult to separate and in breaking emulsions at relatively low temperatures, e.g. 30.degree. to 45.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.