Patent ID: 8829134

Claim:
A process for transporting a liquid monomer phase which has been withdrawn from a storage vessel into which it has been transferred after removal of undissolved solids contained in it by filtration and in which it has been stored at storage temperatures from 17 to 25° C. and whose content of the monomer is ≧97% by weight in the tank of a tank truck or of a tanker ship, the monomer being a monomer from the group consisting of acrolein, methacrolein, acrylic acid, methacrylic acid, esters of acrylic acid and an alcohol having from 1 to 12 carbon atoms and esters of methacrylic acid and an alcohol having from 1 to 12 carbon atoms, which comprises subjecting the liquid monomer phase, on the route from the storage vessel into the tank of the tank truck or of the tanker ship, to at least one separating operation to remove at least a portion of polymer of the monomer present dissolved in the liquid monomer phase, wherein the at least one separating operation is a filtration in which the degree of retention efficiency of the filter medium used for particles having a particle diameter of ≧30 μm is at least 90%.