Lubricant composition for limited slip differential of car

Details Lubricant composition for limited slip differential of car Lubricant composition for limited slip differential of car

1994-05-20

1996-08-20

Howard, Jacqueline V.

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

Lubricants or separants for moving solid surfaces and...

Organic compound containing boron

C10M14110

Patent

active

055475965

ABSTRACT:
A lubricant composition for LSD of a car is here disclosed which is obtained by adding a phosphate amine salt such as an amine salt of an oleyl acid phosphate and a borated ashless dispersant such as a reaction product of polybutenylsuccinimide and boric acid to a base oil, a ratio (N/P) of a nitrogen content (N) to a phosphorus content (P) being 0.5 or more, a ratio (N/B) of the nitrogen content (N) to a boron content (B) being 4 to 10. The lubricant composition of the present invention inhibits the generation of chattering during the operation of an LSD device, minimizes the friction on a metallic friction plate, and is excellent in oxidation stability.

REFERENCES:
patent: 3901932 (1975-08-01), Tada et al.
patent: 4118328 (1978-10-01), Hotten
patent: 4472288 (1984-09-01), Frost, Jr.
patent: 4599191 (1986-07-01), Horodysky
patent: 5089156 (1992-02-01), Chrisope et al.
Patent Abstracts of Japan, vol. 014, No. 188 (C-0710) 17 Apr. 1990.

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