| abstract |
The present invention relates to a two-component strengthening system and a paper web made from the two-component strengthening system. Through the use of the reinforcement system, a paper web can be produced in which the strength characteristics of the web can be specifically tailored. The first component of the system comprises a polymer having a molecular weight of at least about 1.5 m-eq primary amine functionality and at least about 10,000 Daltons per gram of polymer. The second component may be either a polymeric anionic compound or a polymeric aldehyde functional compound. For example, the polyamine polymer component may be a polysaccharide having a polyvinylamine or primary amine functional group. In one embodiment, the second component may be a cationic polymer aldehyde functional compound. For example, the second component may be cationic glyoxylated polyacrylamide. In another embodiment, the second component may be a polymeric anionic compound comprising a carboxyl functional group. |