| 摘要 |
Compounds of the structure: H(OCH2CH2)kORO Xm(CH2CH2O)nH (I) where R is a divalent hydrocarbyl or hetero-substituted hydrocarbyl group having up to 10 carbon atoms, X is -CH2CH(R1)O- or -(CH2)4O-, R1 is methyl or ethyl, m is from 0.5 to 3.0 and k+n is from 3 to 10 the number of X groups not exceeding 25% by weight of the compound are disclosed. Such compounds are useful as hydraulic fluids. R is typically -(CH2)x- where x is from 4 to 10. A process for preparing an alkoxylating agent with a diol HOROH in a first step and further reacting the product of the first step with ethylene oxide is also disclosed. A typical diol is 1,6-hexanediol; a typical alkoxylating agent is propylene oxide.
|
