Multifunctional viscosity index improver exhibitng improved low

Details Multifunctional viscosity index improver exhibitng improved low Multifunctional viscosity index improver exhibitng improved low

1992-10-26

1993-11-16

Medley, Margaret

Compositions

Electrolytes for electrical devices

252 45, 252 50, 252 22R, 525 64, 525 66, 525285, 525291, 525298, 525300, 525301, 525303, 5253276, 5253277, 5253295, 5253296, 5253299, 5253301, C10M14918, C10M14522

Patent

active

052620751

ABSTRACT:
Multifunctional viscosity index improver additives for oleaginous composition comprising reaction products of (i)(a) ethylene-alpha-olefin copolymers grafted with (i)(b) carboxylic acid material, further reacted with (ii) at least one of polyamine, polyol, about C.sub.30 -C.sub.400 hydrocarbyl substituted carboxylic acid component together with polyol, or said carboxylic acid component together with polyamine, wherein the copolymer (i)(a) comprises intramolecularly heterogeneous copolymer chains containing at least one crystallizable segment of methylene units and at least one low crystallinity ethylene-alpha-olefin copolymer segment, and wherein said copolymer has a molecular weight distribution characterized by at least one of a ratio of M.sub.w /M.sub.n of less than 2 and a ratio of M.sub.n /M.sub.w of less than 1.8.

REFERENCES:
patent: 3316177 (1967-04-01), Dorer
patent: 3326804 (1967-06-01), Hu
patent: 4089794 (1978-05-01), Engel et al.
patent: 4132661 (1979-01-01), Waldbillig et al.
patent: 4137185 (1979-01-01), Gardiner et al.
patent: 4144181 (1979-03-01), Elliott et al.
patent: 4160739 (1979-07-01), Stambaugh et al.
patent: 4169063 (1979-09-01), Kiovsky
patent: 4171273 (1979-10-01), Waldbillig et al.
patent: 4219432 (1980-08-01), Girgenti et al.
patent: 4517104 (1985-05-01), Bloch et al.
patent: 4540753 (1985-09-01), Cozewith et al.
patent: 4557847 (1985-12-01), Gutierrez et al.
patent: 4632769 (1986-12-01), Gutierrez et al.
patent: 4803003 (1989-02-01), Chung
patent: 4804794 (1989-02-01), Ver Strate et al.

Affiliated with

Also associated with

Rating

Multifunctional viscosity index improver exhibitng improved low does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multifunctional viscosity index improver exhibitng improved low , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multifunctional viscosity index improver exhibitng improved low will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-20259