| 摘要 |
Polyglycol ethers of general formula (I> R<1>O-(-CxH2xO-)n-H (I> in which R<1> is an organic radical of one or more carbon atoms, x is an integer from 2 to 5 and n has an average value of from 0.1 to 5, provided that when x is 3 and R<1> is an alkyl radical of less than 5 carbon atoms, then n has an average value of from 0.1 to 1.5, are efficient frothers for mineral treatment and demonstrate advantages over known frothers, especially for coal for power generation. |
