“…The numerous investigations have been carried out in the direction of use of cooligo-and copolymers of 1-alkenes with a number of vinyl monomers and dicyclopentadiene as additives to petroleum oils [4][5][6][7][8]. At the same time a use of hexene-1 as a basic monomer and also its copolymers with indene as viscous additives for oils is also of interest.…”