Paraffin deposition inhibitor coatings
US10759951B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2017 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Mar 4, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17D1/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A containment for crude oil that inhibits paraffin deposition thereon is described. One to twenty coatings of a composition including a polyacrylate are applied to a crude oil contact surface of a crude oil containment; the polyacrylate includes at least about 50 mole % acrylic acid residues or the conjugate base thereof. The coating compositions are suitably delivered from a water dispersion, solution, or emulsion and dried before applying a subsequent coating. Each of the one to twenty coatings are formed from the same or from different polyacrylate coating compositions. The coated containment surfaces inhibit deposition of at least 10 wt % and as much as 90 wt % of paraffin solids from a crude oil compared to the same crude oil contact in the absence of the one to twenty coatings. The coatings inhibit paraffin deposition at temperatures between about 60° C. and −40° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.