The present invention is directed to self-emulsifiable compositions comprising polyolefines, in particular polyisobutene, the process to obtain said emulsions and the use of said emulsions.La présente invention concerne des compositions auto-émulsionnables contenant des polyoléfines et, notamment, du polyisobutène, le procédé dobtention desdites émulsions et lutilisation desdites émulsions.