Microencapsulated lubricating fluids and additives and method of making same
US5112541A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1988 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | Jan 29, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J13/18
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Microencapsulating lubricating fluids and additives and a method of preparing microencapsulated lubricants including the steps of preparing an emulsification medium, adding a lubricant to the emulsification medium, emulsifying the emulsification medium and lubricant to form an emulsion, adding a first solution including resorcinol and dimethylol urea to the emulsion, acidifying the first solution and emulsion, adding a second solution consisting of resorcinol and dimethylol urea to the acidified first solution and emulsion while vigorously stirring it to form a microcapsule suspension, adjusting the pH to be basic, filtering and washing the microcapsule suspension to separate the microcapsules from the solution, and drying the microcapsules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.