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    • 9. 发明专利
    • Brake fluid.
    • PL181743B1
    • 2001-09-28
    • PL31414496
    • 1996-05-07
    • INST CIEZKIEJ SYNTEZY ORGAICSO CHEMICAL PROD SP ZOO
    • BEKIERZ GERARDCELEJEWSKI JERZYPOSKROBKO HALINAZAWADZKI MIECZYSLAWKUPIEC ANDRZEJBOGACKI EDWARD
    • C10M105/18
    • The brake fluid is designed for hydraulic braking systems and clutch systems of vehicles operating in demanding conditions. It contains methyl ethers of polyethylene glycols, products of esterification of these ethers with boric acid, and propylene polyglicols and refining additives. Characterized in that: It consists of: 45-55 percent by mass of a mixture of methyl ethers of polyethylene glycols, characterised by the boiling point above 240 degrees C, the density within the range of 1.045-1.055 g/cm3> and acidity - in terms of acetic acid - under 0.1 percent by mass, which contains: up to 10 percent by mass of methyl ether of diethylene glycol, 50-80 percent by mass of methyl ether of triethylene glycol, 10-30 percent by mass of methyl ether of tetraethylene glycol, 0-10 percent by mass of methyl ether of pentaethylene glycol and 0-10 percent by mass of polyglycols and methyl ethers of polyethylene glycols above pentaethylene glycol; 35-45 percent by mass of a mixture of the above-indicated methyl ethers of polyethylene glycols, esterified with boric acid and characterised by the boiling point above 270 degrees C; 0-15 percent by mass of polyoxypropylenediol with the average molecular weight of about 2000; 0-0.04 percent by mass of diphenylpropane; 0-0.05 percent by mass of 1-methylene-(diethanol)amino-4-methyl-benzotriazole; 0-0.4 percent by mass of tricresylisopropyl phosphate and 0-0.06 percent by mass of a derivative of dodeceno-butanedioic acid anhydride and a vegetal aliphatic amine with the average carbon chain length of C-18 and the acid number of 50-100 mg KOH/g, ethoxylated with about 5 moles of ethylene oxide.