Hydraulic fluid composition with improved properties based on bo

Details Hydraulic fluid composition with improved properties based on bo Hydraulic fluid composition with improved properties based on bo

1980-11-05

1983-02-01

Willis, Jr., P. E.

Compositions

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

Organic components

252 74, 252 75, 252 76, 252 77, 252 785, 252 79, C10M 348

Patent

active

043714480

ABSTRACT:
A hydraulic fluid which substantially fulfils the specification DOT 5 is described. This hydraulic fluid essentially consists of (A) about 20 to 40% by weight of at least one boric acid ester obtained from orthoboric acid, diethylene glycol and an ethylene glycol monoalkyl ether; (B) 30 to 60% by weight of at least one ethylene glycol monoalkyl ether; (C) 10 to 40% by weight of at least one bis-(ethylene glycol monoalkyl ether)-formal; (D) 0.1 to 5% by weight of at least one alkylamine; and (E) 0.05 to 5% by weight of at least one stabilizer and/or inhibitor; the percentages by weight in each case being relative to the total weight of the fluid.

REFERENCES:
patent: 3625899 (1971-12-01), Sawyer et al.
patent: 3711411 (1973-01-01), Sawyer et al.
patent: 3779930 (1973-12-01), Alcorn
patent: 3972822 (1976-08-01), Sato et al.
patent: 4088590 (1978-05-01), Knoblauch et al.
patent: 4116846 (1978-09-01), Sato et al.
patent: 4173542 (1979-11-01), Sata et al.
patent: 4219434 (1980-08-01), Ellis

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