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United States Patent 5,292,444
Patil, et. al.Mar. 8, 1994

Lube oil compositions containing fullerene-grafted polymers

Inventors: Patil; Abhimanyu O. (Westfield, NJ); Schriver; George W. (Somerville, NJ); Lundberg; Robert D. (Bridgewater, NJ).
Assignee: Exxon Research and Engineering Company (Florham Park, NJ).
Appl. No.: 955,627
Filed: Oct. 2, 1992

Intl. Cl.:C10M 133/00;
U.S. Cl.:252/50.; 252/51.;
Field of Search:50;51.5 A;51.5 R

References Cited

U.S. Patent Documents
3,215,707Nov., 1965Rense 548/546
3,231,587Jan., 1966Rense 549/255
3,272,746Sept., 1966LeSueur 252/ 47 .5
3,275,554Sept., 1966Wagenaar 252/ 50
3,361,673Jan., 1968Stuart 252/ 51 .5A
3,401,118Sept., 1968Benoit 252/ 51 .5A
3,438,757Apr., 1969Honnen 44/335
3,442,808May, 1969Traise 252/ 49 .6
3,565,804Feb., 1971Honnen 252/ 50
3,912,764Oct., 1975Palmer, Jr. 549/255
4,000,353Dec., 1976Gardiner 536/ 20
4,110,349Aug., 1978Cohen 549/255
4,234,435Nov., 1980Meinhardt 252/ 51 .5A
4,820,432Apr., 1989Lundberg 252/ 51 .5A
4,828,742May, 1989Lundberg 252/ 51 .5R
4,839,073Jun., 1989Gutierrez 252/ 51 .5A
4,987,200Jan., 1991Datta 526/ 75
5,030,370Jul., 1991Patil 252/ 50
5,177,248Jan., 1993Chiang et al. 560/ 86

Other References

Primary Examiner: Dees; Jose
Assistant Examiner: Jones; Dwayne C.

Abstract

This invention relates to novel compositions of matter that are lube oils comprising an oil/hydrocarbon soluble fullerene grafted amine-containing polymers and a suitable base oil and, optionally other suitable additives for use as a lubricating oil. This invention also relates to the method of using the fullerene grafted amine-containing polymer itself as additives to base oils. The graft is made by reacting a fullerene with a primary or secondary amine-containing polymer, preferably hydrocarbon containing polymers. Suitable starting polymers are those containing primary or secondary amino groups, e.g., EPDM amine, PIB-amine, PIBSA-PAM, and Mannich based polymers. The lube oil compositions are made by adding an effective amount of the polymer, and optionally, other suitable additives to a base oil typically on an active ingredient basis of from about 0.01 to about 20 wt. %.

13 Claims, No Drawings


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