| abstract |
A process for the manufacture of paper and cardboard that comprises providing a suspension comprising cellulosic fibers and at least one sizing agent selected from the group consisting of dimers of ketones and acid anhydrides, draining said suspension thus forming a continuous band of paper, characterized in that a cationic vinyl addition polymer containing aromatics, and an anionic vinyl addition polymer with a weight average molecular weight in the range of from about 6,000 to about 100,000 are added to the suspension. |