| 摘要 |
<p>Hydrogenated completely random conjugated diene/ monovinylarene copolymers with a conjugated diene content above about 50 weight percent, monovinylarene content below about 50 weight percent, vinyl unsaturation (normalized) at least about 25 weight percent, block polymonovinylarene below about 5 weight percent, and molecular weight M<Sub>n</Sub> in the range of about 30,000-200,000, are soluble in synthetic poly(α-olefin) lubricating oils providing therein effective viscosity index control, pour point, and shear loss at low concentrations.</p> |
