Water-based hydraulic fluid compositions containing selected two

Compositions – Heat-exchange – low-freezing or pour point – or high boiling... – Organic components

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252 475, 252 482, 252 486, 252 493, 252 50, 252 515R, 252 52A, 252 546, 252 75, 252 76, 252 79, C10M12910, C10M13324, C10M13510, C10M17300

Patent

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045697779

ABSTRACT:
Disclosed is an improved water-based hydraulic fluid composition which comprises an aqueous composition having a viscosity of at least 5 centistokes at 40.degree. C. which contains up to about 95 percent by weight of water, at least 0.1 percent by weight of a carboxylic acid lubricity agent, and an effective amount of at least one selected anti-wear additive; wherein the improvement comprises:

REFERENCES:
patent: 2330239 (1943-09-01), Prutton
patent: 3227652 (1966-01-01), Ackerman
patent: 3245909 (1966-04-01), Lowe
patent: 3826746 (1974-07-01), Schick et al.
patent: 4347148 (1982-08-01), Davis
patent: 4434066 (1984-02-01), Lewis

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