A composition comprising an aqueous cellulosic furnish, a high molecular weight cationic polymer, and an anionic polymer comprising a modified lignin wherein the ratio of the cationic polymer to the anionic polymer is from about 10:1 to 1:10 on an active basis is disclosed. A process employing this composition...http://www.google.es/patents/US5501773?utm_source=gb-gplus-sharePatente US5501773 - Cellulosic, modified lignin and cationic polymer composition and process for making improved paper or paperboard
Cellulosic, modified lignin and cationic polymer composition and process for ...
