| abstract |
The invention relates to an interpenetrating polymer network (IPN) that comprises two polymers which are at least partially interlaced on a molecular scale, wherein the first polymer is obtainable by hydrolyzing a cross-linked poly(N-vinylformamide), and the second polymer is a copolymer of monomers A and B. The monomer A is preferably cationic, such as dimethylaminoethylacrylate methyl chloride, and the monomer B may be for example acrylamide. The IPN material of the present invention may be used in paper making processes as drainage agent, retention agent, sizing agent or flocculant agent. |