FIELD: hydraulic liquid for hydraulic control systems, in particular hydraulic systems of stop valve gas artery.
SUBSTANCE: claimed liquid contains linear or branched liquid polymethylsiloxane; oil cut with boiling point of 155-3500C; and additive, such as mixture of D-α-tocopherole as antioxidant (5-95 mass %) with antiscoring additive (e.g., mono- and dialkylphosphate amine salt mixture) (5-95 mass %). In particular liquid contains (mass %) liquid polymethylsiloxane 30-7-; additive 0.1-10; and balance: oil cut. Preferably Irganox E 201 is used as antioxidant and Irgalube 349 is used as antiscoring additive.
EFFECT: hydraulic liquid with improved service performance, in particular lubricating characteristic and hydraulic control systems with increased durability under any climatic conditions.
2 cl, 1 tbl, 6 ex
| Title | Year | Author | Number |
|---|---|---|---|
| WORKING LIQUID FOR GAS PIPELINE HYDRAULIC SYSTEM | 2005 |
|
RU2285717C1 |
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RU2548917C2 |
| OPERATING FLUID USED FOR HYDRAULIC SYSTEMS | 2007 |
|
RU2355742C1 |
| WORKING FLUID FOR HYDRAULIC SYSTEMS OF GAS DUCTS | 2000 |
|
RU2184770C1 |
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RU2801804C1 |
| METHOD OF PRODUCING SYNTHETIC COMPRESSOR OIL AND BASE OF SAID OIL | 2020 |
|
RU2738608C1 |
| SULFUR-CONTAINING BINUCLEAR MOLYBDATES OF IMIDAZOLIUM AS ADDITIVES TO LUBRICANTS | 2017 |
|
RU2736493C2 |
| ALL-SEASON HYDRAULIC OIL | 2004 |
|
RU2271383C1 |
