abstract |
A continuous process for the preparation of high dropping point i.e. above 400° F. lithium complex soap thickened grease composition comprising the steps of continuously saponifying a hydroxy C 2 -C 24 monocarboxylic acid and a C 2 to C 12 dicarboxylic acid with a lithium base in a lubricating oil substrate and then continuously dehydrating the mixture. |