Novel n-substituted polyamide type polymers, their method of preparation and their use as additives for crude petroleum oils
US4870137A · kind A · utility
7Cited by
2References
2Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 9, 1987 |
| Grant date | Sep 26, 1989 |
| Priority date | — |
| Expiry date | Jan 9, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L1/2364
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymer compounds resulting from the condensation of polyacrylic acids having a molecular weight comprised between 10,000 and 2,000,000 and alkylamines containing at least 12 carbon atoms in their chain. These products constitute paraffin deposit inhibitors and pour point depressants for crude petroleum oils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.