Method of breaking oil-in-water emulsions
US4237005A · kind A · utility
6Cited by
6References
7Claims
0Family size
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Inventor
Key dates
| Filing date | Jun 4, 1979 |
| Grant date | Dec 2, 1980 |
| Priority date | — |
| Expiry date | Jun 4, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G79/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The use as oil-in-water emulsion breakers of phosphonic acid ester condensate oligomers is disclosed which oligomers are ester condensates of alkyl-1-hydroxy-1, 1-diphosphonic acid having the formula: ##STR1## where R.sub.1 and R.sub.2 each represent a group having the formula C.sub.x H.sub.2x+1, where x is from 6 to 13; Y is ##STR2## M is a water soluble cation such as Na, K or NH.sub.4, and n is 1 or greater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.