| 摘要 |
<p>A process for preparing a fluid, highly-basic, magnesium-containing dispersion, wherein the process comprises: forming an admixture of oil soluble dispersing agent, magnesium oxide, volatile solvent, water, alcohol, and ammonia or ammonium compound, treating the admixture with carbon dioxide, adding to the carbonated admixture a nonvolatile diluent oil, and removing the volatile materials. The process is particularly suitable for preparing large batches of product and, therefore, is suitable for commercial preparation of the product. The product is useful in lubricating compositions for internal combustion engines. Important features of the process are: use of a very small amount of alcohol, use of ammonia or ammonium compound and use of certain types of magnesium oxide.</p> |
