Proppant
US10501683B2 · kind B2 · utility
0Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2014 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Nov 25, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/885
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A proppant includes a particle present in an amount of from 90 to 99.5 percent by weight based on the total weight of the proppant, and a polyurethane coating disposed about the particle and present in an amount of from 0.5 to 10 percent by weight based on the total weight of the proppant. The polyurethane coating comprises the reaction product of an isocyanate component and an isocyanate-reactive component comprising a polydiene polyol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.