Preparation of phosphorus—containing antiwear composition for use in lubricant compositions
US9382275B2 · kind B2 · utility
2Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2011 |
| Grant date | Jul 5, 2016 |
| Priority date | — |
| Expiry date | Apr 22, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2060/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process is provided for preparing a salt of a hydroxy-substituted di-ester of phosphoric acid, comprising: (a) reacting a phosphating agent with a monohydric alcohol and with an alkylene polyol, wherein the mole ratio of monohydric alcohol:alkylene polyol is about 0.2:0.8 to about 0.8:0.2 and wherein an excess of the phosphating agent is employed such that the product mixture formed thereby contains phosphorus acid functionality; and (b) reacting the product mixture of step (a) with an amine. The product is useful as an antiwear agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.