Patent ID: 7026401

Claim:
A process for the continuous preparation of a bimodal or multimodal mixture of two or more amorphous polyolefins having a different molar mass, wherein the viscosity ratio of at least two amorphous polyolefins having a different molar mass is less than 0.005 or greater than 4 which comprises preparing the bimodal or multimoldal mixture by process a) or process b), a) preparing the amorphous polyolefin having a high molar mass by solution polymerization in one reactor of an assembly of two or more reactors connected in parallel or in series and the other constituents of the mixture, which include at least one polyolefin which has a lower molar mass than said at least one polyolefin with said high molar mass, are produced in the other reactors after which the polyolefins are mixed in solution, homogenizing the solution of polymer mixture obtained and separating off the solvent or b) preparing the amorphous polyolefin having a high molar mass by solution polymerization in one reactor and the other constituents of the mixture, which include at least one polyolefin which has a lower molar mass than said at least one polyolefin with said high molar mass, are introduced in the form of a polymer solution into the solution flowing from the reactor, and homogenizing the solution of polymer mixture obtained and separating off the solvent.