Ashless dispersants their preparation and their use

Details Ashless dispersants their preparation and their use Ashless dispersants their preparation and their use

1995-12-01

1997-03-18

Johnson, Jerry D.

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Compound of indeterminate structure, prepared by reacting a...

508477, 560190, 560198, C10M13356, C07C 6934, C07C 6952

Patent

active

056122969

ABSTRACT:
Ashless dispersants are formed using polymers of propylene characterized in that they are liquid substantially linear polymers, they have stereo-irregularity in the polymer chain, at least 60 mol percent of the polymer has a terminal vinylidene group and, optionally, the polymer contains up to 25 mol percent of ethylene or a C.sub.4 to C.sub.10 monoolefin polymerized into the polymer chains.

REFERENCES:
patent: 3576743 (1971-04-01), Widmer et al.
patent: 3632511 (1972-01-01), Liao
patent: 4814540 (1989-03-01), Watanabe et al.
patent: 5137980 (1992-08-01), DeGonia et al.

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