Acrylic copolymers as additives for inhibiting paraffin deposition in crude oils, and compositions containing same
US6218490A · kind A · utility
12Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1999 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Jan 11, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L1/1616
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Acrylic copolymers for use as additives for inhibiting paraffin deposition in crude oils, and compositions containing the oils and said additives, are disclosed. Specifically, polymeric additives useful for inhibiting paraffin deposition in and improving the flow properties of crude oils, and compositions containing the crude petroleum oils and said additives, are disclosed. Said additives are essentially alcohol acrylate copolymers comprising 10-50 carbons with special chain distributions, as well as the corresponding 2- and/or 4-vinylpyridine terpolymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.