Ashless additives for lubricating compositions

Details Ashless additives for lubricating compositions Ashless additives for lubricating compositions

1972-05-04

1976-06-01

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260504R, 26050121, 252 33, 252 332, C07C 8714, C07C 8720

Patent

active

039609375

ABSTRACT:
Superior ashless additives for lubricants are prepared by a process comprising first introducing a petroleum sulfonic acid and a polyamine to a reaction zone and subsequently introducing a cyclic anhydride of a dicarboxylic acid into the reaction zone. In another embodiment, the solids content of the additives is reduced to acceptable levels by removal of free SO.sub.2 from the petroleum sulfonic acid prior to preparing the additive. Lubricating oil compositions containing these ashless additives are also provided.

REFERENCES:
patent: 2680716 (1954-06-01), Lipkin et al.
patent: 2726261 (1955-12-01), Martin
patent: 2807589 (1957-09-01), Mitchell et al.
patent: 2989564 (1961-06-01), Ambrose et al.
patent: 3025240 (1962-03-01), Sheldahl
patent: 3189544 (1965-06-01), Ratner et al.
patent: 3367864 (1968-02-01), Elliott et al.
patent: 3401117 (1968-09-01), Schiff
patent: 3634241 (1972-01-01), Lowe

Affiliated with

Also associated with

Rating

Ashless additives for lubricating compositions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ashless additives for lubricating compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ashless additives for lubricating compositions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2402872