Biocide for petroleum operations
US4911923A · kind A · utility
2Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1985 |
| Grant date | Mar 27, 1990 |
| Priority date | — |
| Expiry date | Jun 27, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/605
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An in-situ biocide having improved characteristics comprises polyoxymethylene polymers having an inherent viscosity of at least 0.1 as measured in para-chlorophenol at 60.degree. C. Such polymers provide continuous release of formaldehyde biocide in hydrocarbon production, transportation, ans storage systems by long term decomposition of the polyoxymethylene. The polyoxymethylenes used are water-insoluble materials, wherein decomposition rate can be controlled through the use of pH, temperature, and certain decomposition catalysts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.