| abstract |
(57) [Summary] [PROBLEMS] To be easily manufactured in processing technology, And to develop and provide viscosity improvers which contain inert hydrocarbons and are therefore stable against hydrogenation. Has a A (A) 99.0 from 99.99 wt% (C 2 -C 20) -1- alkenes, (B) 0.01 from 1.0 wt%, the isolated double bond C 5 -C 20 - A copolymer having a viscosity coefficient VI of 160 or more with an α, ω-diene. |