Process for making a lubricating oil composition

Details Process for making a lubricating oil composition Process for making a lubricating oil composition

1995-06-06

1998-02-24

Medley, Margaret

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...

508466, C10M10566, C10M10570

Patent

active

057212007

ABSTRACT:
An additive compositon comprising a graft and aminederivatized copolymer prepared from ethylene and at least one (C.sub.3 -C.sub.10) alpha-monoolefin and, optionally, a polyene selected from non-conjugated dienes and trienes comprising from about 15 to 80 mole percent of ethylene, from about 20 to 85 mole percent of said (C.sub.3 -C.sub.10) alpha-monoolefin and from about 0 to 15 mole percent of said polyene, said copolymer having a number average molecular weight ranging from about 5,500 to 50,000 and having grafted thereon at least 1.8 molecules of a carboxylic acid acylating function per molecule of said copolymer and reacting said grafted copolymer with an amino alcohol compound selected from the group consisting of a 2-Anilinoalcohol, a (2-hydroxyalkyl) pyrridine, a 4-(2-hydroxyalkyl) morpholine, a 1-(2-hydroxyalkyl) piperazine, a 1-(2-pyrrolidine and a 1-(2-hydroxyalkyl) 2-pyrrolidine.

REFERENCES:
patent: 5167848 (1992-12-01), Chung et al.
patent: 5262075 (1993-11-01), Chung et al.
patent: 5474694 (1995-12-01), Shirodkar et al.

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