Method to enhance the performance of polymers and copolymers of acrylamide as flocculants and retention aids

摘要

A method for increasing the flocculation of solid components of a paper mill slurry in a paper making system which comprises the steps of adding to a paper mill slurry from about 0.003 to about 1.0% by weight based on fiber in the slurry of a water soluble phenolic resin. And a nonionic acrylamide polymer flocculant is then added to the slurry in the amount of from about 0.003 to about 0.5% by weight based on fiber in the slurry. The flocculation of solid components of the paper mill slurry is increased. The preparation of an aged phenol-formaldehyde resin is also disclosed.