| 摘要 |
<p>Compositions are described that include a) from 15 weight percent to 60 weight percent of one or more random alkylene oxide interpolymers, each having a weight average molecular weight ranging from 250 g/mol to 2000 g/mol and comprising from 30 weight percent to 60 weight percent of polymer units derived from ethylene oxide; and b) from 40 weight percent to 85 weight percent of one or more alkylene oxide block interpolymers, each having a weight average molecular weight ranging from 1500 g/mol to 4000 g/mol and comprising from 40 weight percent to 90 weight percent propylene oxide blocks. The compositions have a first viscosity in the absence of water and a second viscosity that is at least 60 percent of the first viscosity when at least 10 weight percent water is present. Methods of lubricating surfaces, particularly, marine bearing surfaces with such compositions, are also described.</p> |
