Acrylic copolymers as additives for inhibiting paraffin deposit in crude oil, and compositions containing same
US6750305B2 · kind B2 · utility
2Cited by
7References
20Claims
0Family size
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Key dates
| Filing date | Dec 19, 2002 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Dec 19, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/18
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Copolymers of N-vinylpyrrolidone and alkyl acrylates and/or methacrylates containing 10 to 50 carbon atoms with particular chain distributions can be used as additives for inhibiting wax deposition and improving the pour properties of crude oils.Compositions containing crude oil and said additives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.