| abstract |
The invention relates to a process for the preparation of concentrated emulsions of olefin copolymers in carrier media suitable for use in oil additives without prior dissolution of the olefin copolymers, the solution of an emulsifier of type I wherein A is for olefin copolymer sequences, hydrogenated polyisoprene sequences or hydrogenated copolymers of butadiene / isoprene, and X is a sequence composed of polyacrylate and / or polymethacrylate, in a carrier medium T which essentially does not dissolve the olefin copolymers, but does dissolve the sequences X. and in the temperature range between 40 and 150 ° C using shear forces, the olefin copolymers emulsified in the solution of the emulsifier in the carrier medium T. |