Oxazolines of 2-(alkylthio)succinic acids as an additive for drilling muds
US4431551A · kind A · utility
1Cited by
3References
8Claims
0Family size
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Key dates
| Filing date | Sep 30, 1982 |
| Grant date | Feb 14, 1984 |
| Priority date | — |
| Expiry date | Sep 30, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/22
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Aqueous drilling muds are improved in lubricity by the presence of at least an effective amount of an oxazoline of a C.sub.6 to C.sub.50 2-(alkylthio)succinic acid or anhydride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.