| abstract |
his invention relates to a detergent-dispersant composition for lubricating or fuel oils, The composition consists essentially of (a) an amount effective as a detergent-dispersant of a hydrotalcite having a specific surface area, determined by the BET method, of up to about 60 m 2 /g and an average secondary particle size of up to about 5 microns, the hydrotalcite particles being untreated or sulface-treated with an anionic surface-active agent, and the hydrotalcite being represented by the following formulan wherein x is a positive number represented by 3<x<20, y is a positive number represented by O < y < 2, and m is a positive number of up to 7, and (b) a hydrophobic dispersant i or diluent. |