Water-glycol hydraulic fluid

Details Water-glycol hydraulic fluid Water-glycol hydraulic fluid

1989-10-12

1991-06-04

Lieberman, Paul

Compositions

Heat-exchange, low-freezing or pour point, or high boiling...

Organic components

252 493, 252 77, 252 79, C10M17302, C10M14512

Patent

active

050211811

ABSTRACT:
A water-glycol hydraulic fluid comprising a higher aliphatic acid in a ratio of 2 to 15% by weight, alkali hydroxide in an amount less than an equivalent amount of the higher aliphatic acid, and an organic alkaline compound containing nitrogen atoms in an amount sufficient to adjust the pH of the whole fluid to 10 to 12 is disclosed.
This hydraulic fluid has excellent wear resistance and also excellent sludge solubility.

REFERENCES:
patent: 2751355 (1956-06-01), Clark
patent: 3580847 (1971-05-01), Boehmer et al.
patent: 3992312 (1976-11-01), Genjida et al.
patent: 4855070 (1989-08-01), Lewis

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